The scores of students on a standardized test are normally distributed with a mean of 300 and a standard deviation of 40. (c) The top 25% scores are above what value? Explicitly compute the value.

Answers

Answer 1

To find the value above which the top 25% of scores lie, we need to find the z-score corresponding to the 75th percentile and use it to compute the corresponding raw score.

The z-score corresponding to the 75th percentile can be found using a standard normal distribution table or calculator. The 75th percentile corresponds to a cumulative probability of 0.75, so we need to find the z-score such that the area under the standard normal curve to the left of that score is 0.75.

Using a standard normal distribution table, we can look up the z-score corresponding to a cumulative probability of 0.75, which is approximately 0.67.

Alternatively, we can use the inverse cumulative distribution function (also known as the percent point function) of the standard normal distribution to find the z-score. In Python, we can use the scipy.stats.norm.ppf function to do this:

from scipy.stats import norm

z_score = norm.ppf(0.75)

Either way, we find that the z-score corresponding to the 75th percentile is approximately 0.67.

To find the raw score corresponding to this z-score, we can use the formula:

z = (x - mu) / sigma

where x is the raw score, mu is the mean, and sigma is the standard deviation. Solving for x, we get:

``x = z * sigma + mu

Plugging in the values for `z`, `sigma`, and `mu`, we get:

x = 0.67 * 40 + 300

Simplifying the expression, we get:

x = 326.8

Therefore, the top 25% scores are above the value of 326.8.

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Related Questions

What is the co-interior angle x in the drawing below? Type in numerical answer only

Answers

Answer:

[tex]58 + x = 180[/tex]

[tex]x = 122[/tex]

Angle x measures 122°.

a racer is traveling 150 miles per hour how many feet dose it travel in 5 seconds

Answers

150 miles is the same as 150*5280 = 792000 feet, and one hour is equivalent to 60*60 = 3600 seconds. Now we divide 792000 feet by 3600 seconds to get the equivalent rate: 792000 ft/3600 sec = 220 ft/second. Now, we multiply the rate by 5 and get 1100 feet per 5 seconds. So, our answer is 1100 feet.

Write each expression in factored form. If it is not possible, write “not possible.”

a2−36
49−25b2
c2+9
10081−16d2
64+121b2

Answers

Expression in factored form

a² - 36 = (a + 6)(a - 6)

49 - 25b² = (7 - 5b)(7 + 5b)

c² + 9 = Not possible (sum of squares)

10081 - 16d² = (101 - 4d)(101 + 4d)

64 + 121b² = Not possible (sum of squares)

Let's factorize each expression:

a² - 36:

This expression is a difference of squares, as it can be written as (a + 6)(a - 6). Therefore, the factored form is (a + 6)(a - 6).

49 - 25b²:

This expression is also a difference of squares. It can be factored as (7 - 5b)(7 + 5b).

c² + 9:

This expression is not factorable because it is a sum of squares. The factored form is not possible.

10081 - 16d²:

This expression is a difference of squares. It can be factored as (101 - 4d)(101 + 4d).

64 + 121b²:

This expression is not factorable because it is a sum of squares. The factored form is not possible.

To summarize:

a² - 36 = (a + 6)(a - 6)

49 - 25b² = (7 - 5b)(7 + 5b)

c² + 9 = Not possible (sum of squares)

10081 - 16d² = (101 - 4d)(101 + 4d)

64 + 121b² = Not possible (sum of squares)

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I NEED HELP WITH STATISTICS

Answers

a.) The null hypothesis states that the number of hours worked by the software developers is not related to the mean number of hours.

The alternate hypothesis states that the number of hours worked by the software developers is related to the mean number of hours.

b.) The source of error we may be making when null hypothesis is rejected is that the mean hours will remain 44 hours.

What is alternate and null hypothesis?

Alternate hypothesis is the type of hypothesis that is used to statistically test a result of a research and it is used to disprove the null hypothesis.

The null hypothesis is used to show that there is not relationship between two variables that are used in a research problem.

When a null hypothesis is rejected, it means that there is a relationship between the two variables of the research question.

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(q13) You invest in a fund and it is expected to generate $3,000 per year for the next 5 years. Find the present value of the investment if the interest rate is 4% per year compounded continuously.

Answers

The present value of the investment in the fund is $2,455.32.

In order to calculate the present value of the investment in a fund, which is expected to generate $3,000 per year for the next 5 years with an interest rate of 4% per year compounded continuously,

we can use the formula for the present value of an annuity:

PV = A / r,

where PV is the present value, A is the annuity payment, and r is the interest rate.

However, since the interest rate is compounded continuously, we need to use the formula PV = A / e^(rt),

where e is the constant 2.71828, t is the time period in years, and r is the interest rate.

In this case, A = $3,000, r = 4%, and t = 5 years.

Therefore, the present value of the investment is:

PV = $3,000 / e^(0.04 x 5)

= $3,000 / e^(0.2)

= $3,000 / 1.2214

= $2,455.32 (rounded to the nearest cent).

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in aright prism,all the lateral faces are rectangles. true or false​

Answers

True. In a right prism, all the lateral faces are indeed rectangles.

Given data ,

A right prism is a three-dimensional solid with congruent polygonal bases and rectangular lateral faces that connect the corresponding sides of the bases.

Bases: A right prism has two parallel polygonal bases that are congruent. The bases can be any polygon, such as a triangle, rectangle, square, pentagon, etc. The shape of the bases determines the overall shape of the prism.

Height: The height of a right prism is the perpendicular distance between the two bases. It is the length of the lateral edges connecting the corresponding vertices of the bases.

Lateral Faces: The lateral faces of a right prism are rectangular in shape. They are perpendicular to the bases and connect the corresponding edges of the bases. The lateral faces are always parallelograms, and their opposite sides are equal in length.

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A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is spun several times, and the results are recorded below:

Answers

The probability of landing on purple to the nearest hundredth: 0.15

How to solve

The total number of spins is 84, and the probability of landing on purple is 13/84 = 0.15476.

Rounding to the nearest hundredth, this is 0.15.

Elaborating:

Number of times the spinner landed on purple: 13

Total number of spins: 84

Probability of landing on purple: (13/84) = 0.15476

Probability of landing on purple to the nearest hundredth: 0.15

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The Complete Question

A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is spun several times, and the results are recorded below:

Spinner Results

Color Frequency

Red 18

Blue 15

Green 20

Yellow 18

Purple 13

Based on these results, express the probability that the next spin will land on purple as a decimal to the nearest hundredth.

A steel manufacturer wants to produce a container in the shape of a rectangular solid with volume 84 m3 . The manufacturer wants the length of the container to be one meter longer than the width, and the height to be one meter greater than twice the width. What should the dimensions of the container be?

Answers

Answer:

Step-by-step explanation:

Let's assume the width of the container is "x" meters.

According to the given information, the length of the container is one meter longer than the width, so the length would be "x + 1" meters.

The height is stated to be one meter greater than twice the width, which can be expressed as "2x + 1" meters.

To find the dimensions of the container, we need to consider the volume formula for a rectangular solid:

Volume = Length × Width × Height

Plugging in the given volume of 84 m^3 and the dimensions we determined:

84 = (x + 1) × x × (2x + 1)

Expanding and simplifying the equation:

84 = (2x^2 + x) × (x + 1)

84 = 2x^3 + 3x^2 + x

Rearranging the equation and setting it equal to zero:

2x^3 + 3x^2 + x - 84 = 0

Now, we can use numerical methods or a graphing calculator to solve this equation. After solving it, we find that one possible solution is x ≈ 3.35.

Since the dimensions of a container cannot be negative, we discard any negative solutions.

Therefore, the width of the container is approximately 3.35 meters. Using this value, we can find the length and height:

Length = x + 1 ≈ 3.35 + 1 ≈ 4.35 meters
Height = 2x + 1 ≈ 2(3.35) + 1 ≈ 7.7 meters

So, the dimensions of the container should be approximately:
Width ≈ 3.35 meters
Length ≈ 4.35 meters
Height ≈ 7.7 meters

Selina claims single having one exemption. Her state tax deduction is 21% of her federal tax contribution. Calculate the amount of state tax Selina owes if her gross pay for two weeks is $840.
The following federal tax table is for biweekly earnings of a single person.
A 9-column table with 7 rows is shown. Column 1 is labeled If the wages are at least with entries 720, 740, 760, 780, 800, 820, 840. Column 2 is labeled But less than with entries 740, 760, 780, 800, 820, 840, 860. Column 3 is labeled And the number of withholding allowances is 0, the amount of income tax withheld is, with entries 80, 83, 86, 89, 92, 95, 98. Column 4 is labeled And the number of withholding allowances is 1, the amount of income tax withheld is, with entries 62, 65, 68, 71, 74, 77, 80. Column 5 is labeled And the number of withholding allowances is 2, the amount of income tax withheld is, with entries 44, 47, 50, 53, 56, 59, 62. Column 6 is labeled And the number of withholding allowances is 3, the amount of income tax withheld is, with entries 26, 28, 31, 34, 37, 40, 43. Column 7 is labeled And the number of withholding allowances is 4, the amount of income tax withheld is, with entries 14, 16, 18, 20, 22, 24, 26. Column 8 is labeled And the number of withholding allowances is 5, the amount of income tax withheld is, with entries 1, 3, 5, 7, 9, 11, 13. Column 9 is labeled And the number of withholding allowances is 6, the amount of income tax withheld is, with entries 0, 0, 0, 0, 0, 0, 1.
a.
$16.17
b.
$16.80
c.
$32.34
d.
$33.60

Answers

The amount of state tax Selina owes is $77.42.

To calculate the amount of state tax Selina owes, we need to follow the given information.

Selina's gross pay for two weeks is $840. We need to determine her federal tax contribution based on the provided tax table.

Looking at the federal tax table, we find that for a gross pay of $840, the federal tax withheld for 0 withholding allowances is $98.

Next, we calculate the state tax deduction, which is 21% of the federal tax contribution:

State tax deduction = 21% of $98

State tax deduction = 0.21 * $98

State tax deduction = $20.58

Finally, we subtract the state tax deduction from the federal tax contribution to find the amount of state tax Selina owes:

State tax owed = Federal tax contribution - State tax deduction

State tax owed = $98 - $20.58

State tax owed = $77.42

Therefore, the amount of state tax Selina owes is $77.42.

None of the provided options (a, b, c, d) match the calculated amount.

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Answer:

B. $16.56

Step-by-step explanation:

Got it right on edge 2023

WC is tangent to circle O at point W. If the radius of the circle is 32, and the tangent segment WC = 27, what is the length of CO? Round your answer to two decimal places.​

Answers

The length of CO is approximately 41.89 units, rounded to two decimal places.

We have a circle O with radius 32. WC is a tangent segment to the circle at point W, and its length is 27. We are required to find the length of CO.

Since WC is tangent to the circle, it is perpendicular to the radius drawn from the center of the circle to the point of tangency (W). Let's label the center of the circle as point C.

We can use the Pythagorean theorem to find the length of CO. According to the theorem, in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

In this case, CO is the hypotenuse, and WC and OW are the other two sides of the right triangle.

Using the Pythagorean theorem, we have:

CO^2 = WC^2 + OW^2

CO^2 = 27^2 + 32^2

CO^2 = 729 + 1024

CO^2 = 1753

Taking the square root of both sides, we get:

[tex]CO ≈ √1753[/tex]

CO ≈ 41.89

Therefore, the length of CO is approximately 41.89 units, rounded to two decimal places.6

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HELP QUICK PLS, For each of the figures, write Absolute Value equation in the form
|x−c=d|, where c and d are some numbers, to satisfy the given solution set.
pls answer!
x = -8; x = -4

Answers

The absolute value equation for x = -4 can be written as:

|x - (-2)| = 2

We have,

For x = -8, the absolute value equation can be written as:

|x - c| = d

Substituting x = -8 into the equation, we have:

|-8 - c| = d

To satisfy the given solution set, we need to determine the values of c and d that make the equation true.

Since x = -8, the absolute value of -8 minus c should be equal to d.

For x = -8, a suitable choice of c would be -12 and d would be 4.

This gives us:

|-8 - (-12)| = 4

|4| = 4

Therefore, the absolute value equation for x = -8 can be written as:

|x - (-12)| = 4

Similarly, for x = -4, the absolute value equation can be written as:

|x - c| = d

Substituting x = -4 into the equation, we have:

|-4 - c| = d

To satisfy the given solution set, we need to determine the values of c and d that make the equation true.

Since x = -4, the absolute value of -4 minus c should be equal to d.

For x = -4, a suitable choice of c would be -2 and d would be 2. This gives us:

|-4 - (-2)| = 2

|-2| = 2

Therefore,

The absolute value equation for x = -4 can be written as:

|x - (-2)| = 2

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NEED HELP ASAP! Can otter enclosure has a cuboid shaped pool with dimensions 4m by 18m by 7m. a zookeeper decides that there should be at least 30m3 of space in the pool for every otter living in the enclosure. use this information to workout the maximum number of otters that can live in the enclosure

Answers

Answer:  16

Step-by-step explanation:

Given:

Enclosure is 4 m x 18 m x 7 m

Find:

How many 30 m³ spaces can you make in  the enclosure.  This will tell you how many otters can live

Solution:

Cuboid is same as cube

Volume for cube = Length x width x height

Volume for cube = 4 x 18 x 7

Volume for cube = 504 m³

Divide 504 by 30 to find the number of spaces the enclosure can hold

Can hold = 540/30

Can hold = 16.8

You cannot hold 16.8 otters because you cannot have a portion of an otter so you round down to 16.

16 is your answer

Use cramer's rule to solve this system: 8x+5y= 2x - 4y = - 10

Answers

The solution to the system of equations using Cramer's rule is x = -1 and y = 2.

To solve the system of equations using Cramer's rule, we'll need to determine the values of x and y by calculating the determinants of various matrices.

The given system of equations is:

8x + 5y = 2 (Equation 1)

2x - 4y = -10 (Equation 2)

First, let's calculate the determinant of the coefficient matrix, D:

D = |8 5|

|2 -4|

D = (8 * -4) - (5 * 2)

D = -32 - 10

D = -42

Next, we'll calculate the determinant of the matrix formed by replacing the x coefficients with the constants from the right side of the equations, Dx:

Dx = |2 5|

|-10 -4|

Dx = (2 * -4) - (5 * -10)

Dx = -8 + 50

Dx = 42

Similarly, we'll calculate the determinant of the matrix formed by replacing the y coefficients with the constants, Dy:

Dy = |8 2|

|2 -10|

Dy = (8 * -10) - (2 * 2)

Dy = -80 - 4

Dy = -84

Now, we can find the values of x and y:

x = Dx / D

x = 42 / -42

x = -1

y = Dy / D

y = -84 / -42

y = 2

Therefore, the solution to the system of equations is x = -1 and y = 2.

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5/6x - 1/3 > 1 1/3

Solve for x

Answers

Answer:

First subtract (4) and (3x) from each side of the equation to isolate the x ... 5x-4=3x-8 One solution was found : x = -2 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation

Step-by-step explanation:

Answer:

x > 2

Step-by-step explanation:

To solve for x, we will first simplify the left side of the inequality by finding a common denominator for the fractions:

5/6x - 1/3 > 4/3

Multiplying both sides by 6 to eliminate the fractions, we get:

5x - 2 > 8

Adding 2 to both sides, we have:

5x > 10

Dividing both sides by 5, the final answer is:

x > 2

Hope this helps!

Amy opened a savings account and deposited $300.00. The account earns 2% interest, compounded continuously. If she wants to use the money to buy a new bicycle in 1 year, how much will she be able to spend on the bike?
Use the formula A=Pert, where A is the balance (final amount), P is the principal (starting amount), e is the base of natural logarithms (≈2.71828), r is the interest rate expressed as a decimal, and t is the time in years.

Answers

The final amount is $2203. 2

How to determine the value

From the information given, the formula for finding the amount is expressed as;

A=Pert

Such that the parameters are;

A is the balance (final amount), P is the principal (starting amount) e is the base of natural logarithms (≈2.71828) r is the interest rate expressed as a decimal t is the time in years.

Substitute the values, we have;

A = 300 × [tex]2.71^(^2^*^1^)[/tex]

Multiply the exponents, we have;

A = 300 × [tex]2.71^2[/tex]

Find the square value and multiply, we get;

A = $2203. 2

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given cos theta=4/5 and theta is in the 1st quadrant. find the angle equivalent to theta between 0 and 360 degrees. (give answer to 2. dp)​

Answers

The angle equivalent to θ between 0 and 360 degrees is approximately 36.87 degrees.

We have,

To find the angle equivalent to θ between 0 and 360 degrees, we can use the inverse cosine function [tex](cos^{-1}).[/tex]

The given value of cos θ = 4/5 represents the cosine of an angle in the first quadrant. In the first quadrant, all trigonometric functions are positive, including cosine.

Taking the inverse cosine [tex](cos^{-1})[/tex] of both sides of the equation, we get:

θ =[tex]cos^{-1}(4/5)[/tex]

The inverse cosine function returns the angle whose cosine is equal to the given value.

Evaluating [tex]cos^{-1}(4/5)[/tex] using a calculator or trigonometric tables, we find the value to be approximately 36.87 degrees.

Therefore,

The angle equivalent to θ between 0 and 360 degrees is approximately 36.87 degrees.

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What is the angle of o in the drawing below? Type in numerical answer only

Answers

Answer:

[tex]52 + o = 180[/tex]

[tex]o = 128[/tex]

Angle o measures 128°.

if i were to make 126 dollars a week and i were to work for one year, how much money would i have when the year is over? please hurry

Answers

6,570.0054 would be the answer

simplify and write in usual form ((5.5 * 10 ^ - 4)(6 * 10 ^ 7))/((3.3 * 10 ^ - 6) * (2 * 10 ^ 4) ^ 2)​

Answers

Step-by-step explanation:

Expand the given 10 n and multiply it by the given number. 2. Then the result will be in the usual form.

To simplify and write the expression in usual form, we can perform the calculations and simplify the terms with exponents.

Let's break down the expression step by step:

((5.5 * 10^-4)(6 * 10^7))/((3.3 * 10^-6) * (2 * 10^4)^2)

First, we can multiply the numerators and denominators separately:

= (5.5 * 6 * 10^-4 * 10^7) / (3.3 * 10^-6 * 2^2 * (10^4)^2)

= (33 * 10^3 * 10^-4 * 10^7) / (3.3 * 10^-6 * 4 * 10^8)

Next, let's simplify the terms with exponents:

= (33 * 10^(3-4+7)) / (3.3 * 10^(-6-8))

= (33 * 10^6) / (3.3 * 10^-14)

Now, we can simplify further by dividing the coefficients and subtracting the exponents:

= (33 / 3.3) * 10^(6 - (-14))

= 10 * 10^20

Finally, we can write the expression in usual form:

= 10^1 * 10^20

= 10^(1 + 20)

= 10^21

Therefore, the simplified expression in usual form is 10^21.

Find the volume
1.Cone whose radius is 10cm and the height is 5cm.
2.Sphere whose radius is 5m.
3.Cone whose radius is 6m and the height is 20m.

Answers

Answer:

The answers are all in 2d.p

1)523.81cm³

2)166.67m³

3)754.29m³

Step-by-step explanation:

1)V=1/3pir²h

V=1/3×10²×5×22/7

V=523.81cm³

2)V=4/3pir³

V=4/3×5³

V=166.67m³

3)V=1/3pir²h

V=1/3×22/7×6²×20

V=754.29m³

A 13 km 13km13, start text, k, m, end text stretch of road needs repairs. Workers can repair 3 1 2 km 3 2 1 ​ km3, start fraction, 1, divided by, 2, end fraction, start text, k, m, end text of road per week. How many weeks will it take to repair this stretch of road?

Answers

you can start by dividing the total length of the road by the distance that can be repaired per week:

13 km ÷ 3 1/2 km/week = 3.71 weeks

Rounding up, it will take 4 weeks to repair the entire 13 km stretch of road.

A spinner with three equal size sections labeled red, green, and yellow is
spun once. Then a coin is tossed, and one of two cards labeled with a 1 or
a 2 is selected. What is the probability of spinning yellow, tossing heads,
and selecting the number 2?

FASTTT (ASAPPP!)

Answers

To find the probability of spinning yellow, tossing heads, and selecting the number 2, we need to multiply the probabilities of each individual event.

Given:

The spinner has three equal size sections labeled red, green, and yellow.
The coin has two sides labeled heads and tails.
The cards are labeled with a 1 and a 2.
The probability of spinning yellow is 1/3, as there are three equally likely outcomes and one of them is yellow.

The probability of tossing heads is 1/2, as there are two equally likely outcomes and one of them is heads.

The probability of selecting the number 2 is 1/2, as there are two cards and one of them is labeled with a 2.

To find the overall probability, we multiply the probabilities of each event:

P(Yellow, Heads, 2) = P(Yellow) * P(Heads) * P(2)
= (1/3) * (1/2) * (1/2)
= 1/12

Therefore, the probability of spinning yellow, tossing heads, and selecting the number 2 is 1/12.

An investor was afraid that he would become like King Lear in his retirement and beg hospitality from his children, so he purchased grain "tithes," or shares in farm output, for 800 pounds. The tithes paid him 78 pounds per year for 30 years. What interest rate did the he receive on this investment?

Answers

as far as I can read it, he bought £800 in shares, who knows how many, is irrelevant in this case, however we also know that he got £78 for 30 years, what was the rate?

well, we can nevermind the 30 years part and keep an eye that every year his earned interest was £78 flat, so we're looking at a simple interest rate, since it's not compounding, so let's reword all that

with an initial investment of £800 yielding £78 per year, what's the interest rate?

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \pounds 78\\ P=\textit{original amount deposited}\dotfill & \pounds 800\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &1 \end{cases} \\\\\\ 78 = (800)(\frac{r}{100})(1) \implies 78=8r\implies \cfrac{78}{8}=r\implies \stackrel{ \% }{9.75}=r[/tex]

Triangle ABC - triangle DEF. Use the image to answer the question. Determine the measurement of DF.

A. DF=3.3
B. DF=2.37
C. DF=2.28
D. DF=1.1

Answers

The measure of DF is 2.28.

We have,

Triangle ABC ≅ Triangle DEF

So,

The ratio of the corresponding sides is equal.

Now,

BA/ED = AC/DF

Substitute the values.

11/3.3 = 7.6/DF

DF = (7.6 x 3.3) / 11

DF = 7.6 x 0.3

DF = 2.28

Thus,

The measure of DF is 2.28.

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Somraj had ₹1,78,500 in his bank account and after one year, he withdrew the amount completely along with the interest of 20,489. He bought a laptop for his son worth 36,725, a dining table worth 8,800, a bike worth 56,725 and deposited the rest in his wife's account. a. What is the total cost of the bike and the dining table? Which is costlier, the bike or the dining table? b. c. What is the amount that he deposited in his wife's account?​

Answers

Answer:

Step-by-step explanation:

Let's calculate the total cost of the bike and the dining table first.

The cost of the bike is ₹56,725.

The cost of the dining table is ₹8,800.

To find the total cost, we add the cost of the bike and the cost of the dining table:

₹56,725 + ₹8,800 = ₹65,525

So, the total cost of the bike and the dining table is ₹65,525.

To determine which item is costlier, we compare the costs of the bike and the dining table. In this case, the bike is costlier as it costs ₹56,725, while the dining table costs ₹8,800.

Now, let's calculate the amount that Somraj deposited in his wife's account.

He initially had ₹1,78,500 in his bank account and withdrew the entire amount along with the interest of ₹20,489. Therefore, the total amount withdrawn is:

₹1,78,500 + ₹20,489 = ₹1,98,989

From this amount, he spent ₹36,725 on the laptop, ₹8,800 on the dining table, and ₹56,725 on the bike. So, the total amount spent on these items is:

₹36,725 + ₹8,800 + ₹56,725 = ₹1,02,250

To find the amount deposited in his wife's account, we subtract the total amount spent from the total amount withdrawn:

₹1,98,989 - ₹1,02,250 = ₹96,739

Therefore, Somraj deposited ₹96,739 in his wife's account.

Answer:

a. 65,525

b. bike

c. 96,739

Step-by-step explanation:

a.

total cost of the bike and the dining table,

= 56,725 + 8,800

= 65,525

b.

bike is costlier than the dining table.

c.

total amount somraj received from bank

= 1,78,500 + 20,489

= 198,989

total expenditures

= 36,725 + 8,800 + 56,725

= 102,250

amount he saved to deposit in his wife's account

= 198,989 - 102,250

= 96,739

A cylinder has a base diameter of 20 inches and a height of 2 inches. What is its volume in cubic inches, to the nearest tenths place?

Answers

Answer:

628.3 cubic inches

Step-by-step explanation:

Since the base diameter of the cylinder is d=20 inches, so its radius r is:

[tex]r=\frac{d}{2}=\frac{20}{2}=10[/tex]

Then, the volume V of the cylinder with radius r=10 inches and height h=2 inches is:

[tex]V=\pi r^{2} h=\pi\times 10^{2}\times 2=628.3[/tex]

Answer:

To find the volume of a cylinder, we need to use the formula V = πr^2h, where V is the volume, r is the radius of the base, and h is the height. Since we are given the diameter of the base, which is 20 inches, we can find the radius by dividing it by 2. So, r = 20 / 2 = 10 inches. The height is given as 2 inches. Plugging these values into the formula, we get:

V = π(10)^2(2)

V = π(100)(2)

V = 200π

To get the volume in cubic inches, we need to multiply this by the conversion factor of 1 cubic inch per cubic inch. This does not change the value, but it gives us the correct units. So,

V = 200π cubic inches

To round this to the nearest tenths place, we need to look at the hundredths digit. If it is 5 or more, we round up; if it is less than 5, we round down. Using a calculator, we can approximate π as 3.14. So,

V ≈ 200(3.14) cubic inches

V ≈ 628 cubic inches

The hundredths digit is 0, which is less than 5. So we round down and keep the tenths digit as it is. Therefore,

V ≈ 628.0 cubic inches

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Help me plssss 5 stars to whoever answers

Answers

Answer:

f = 65

s = 144

t = 144

u = 77

Step-by-step explanation:

the sum of a triangles angles will always be 180

so we can subtract 37 and 78 from 180 to find f which is 65

in regards to s and t, the sum of those 4 angles will be 360, and we can assume the opposite sides of the angles are the same.

so the other side of the 36 angle will also be 36, so we subtract 36 and 36 from from 380 which gives us 288

then we divide it by 2 because we have 2 unknown angles that are the same size, then we get 144 for s and 144 for t

the sum of the angles of a polygon will always be 360

so we can subtract 86 and 53 and t (which we now know is 144) from 360 to find u

so u = 77

Convert the following: i. 6 feet into cm​

Answers

The measurement of the length of 6 feet is 182.88 cm after unit conversion.

Given data ,

To convert feet to centimeters, we need to know the conversion factor between the two units.

In order to translate measurements of a particular amount between different units, a mathematical conversion factor is usually used. This modifies the measurement of the quantity without altering its effects.

1 foot is equal to 30.48 centimeters.

To convert 6 feet to centimeters, we can use the conversion factor:

A = 6 feet x 30.48 centimeters/foot

On simplifying the equation , we get

A = 182.88 centimeters.

Therefore , the value of A is A = 182.88 cm

Hence , 6 feet is equal to 182.88 centimeters.

To learn more about unit conversion click :

https://brainly.com/question/19420601

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please help if you can answer any it’s helpful thanks so much

Answers

Answer:quantom physics x=y

Step-by-step explanation:

need to get oxygen

Vanilla Ice cream comes in 2 sizes. The 48 oz box costs $1.97. The 128 oz costs $5.87. Which size is the better buy?

Answers

Answer: The 128 oz box is the better buy.

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