The taxi travels 140 kilometers in 210 minutes at a speed of 40 km/h.
Let's calculate the distance a taxi travels in 210 minutes at a speed of 40 km/h.
Convert minutes to hours
Since the speed is given in km/h, we need to convert 210 minutes into hours.
There are 60 minutes in an hour, so divide 210 by 60:
210 minutes ÷ 60 = 3.5 hours
Calculate the distance
Now that we have the time in hours, we can use the formula for distance:
Distance = Speed × Time
In this case, the speed is 40 km/h, and the time is 3.5 hours.
Plug these values into the formula:
Distance = 40 km/h × 3.5 hours
Compute the result
Multiply the speed by the time to find the distance:
Distance = 140 km.
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What is the slope of the line that passes through the points (9, 1) and (10, -1)?
Write your answer in simplest form.
Answer:
m=2
Step-by-step explanation:
On a friday evening a pizza shop had orders for 4 peporonni , 97 vegtable ,and 335 cheese pizzas. if the 4 cooks each made an equal number of pizzas how much pizzas did each cook make?
Each cook made 109 pizzas.
How to find an equal number of pizzas?The total number of pizzas ordered is 4 + 97 + 335 = 436.
If the 4 cooks each made an equal number of pizzas, then we can divide the total number of pizzas by the number of cooks to find out how many pizzas each cook made.
436 pizzas / 4 cooks = 109 pizzas per cook.
Therefore, each cook made 109 pizzas.
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Simplify the following expression.
The simplification of the expression ½(18t) + 2t(9) -12 is 27t-12
What is simplification of expression?Simplifying an expression is just another way to say solving a math problem. When you simplify an expression, you're basically trying to write it in the simplest way possible.
For example, 3a²+9a+12 can be simplified by bring out the common factors between the terms
= 3(a²+3a+4).
Similarly, 1/2(18t) + 2t(9) -12 can be simplified as;
9t + 18t -12
= 27t -12
therefore the simplification of ½(18t) + 2t(9) -12 is 27t-12
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Mike is shopping for new clothes. He has a coupon for 20% off of his total purchase. His purchase price before the discount is $68. Let T represent the total cost after the discount. Which equation can be written to model this scenario? Select ALL that apply. 68 – 0. 2(68) = T
A 68 – 0. 2 = T
B 68 – 20 = T
C 0. 2(68) = T
D 0. 8(68) = T
68 – 0. 2 = T and 0. 2(68) = T equation can be written to model this scenario. The correct options are A and C.
The equation 68 – 0.2(68) = T is correct since it represents the total cost after the 20% discount is applied.
The equation 68 – 0.2 = T is not correct since it does not correctly calculate the total cost after the discount.
The equation 68 – 20 = T is not correct since it subtracts the discount amount from the original price, which would give the discounted price before the discount, not the total cost after the discount.
The equation 0.8(68) = T is not correct since it calculates the discounted price, not the total cost after the discount.
Therefore the correct options are a and c.
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Problem 1. (5 points): Evaluate the double integral by first identifying it as the volume of a solid. S SCH (4 - 2y) dA, R= [0, 1] x [0, 1] -
To evaluate the double integral, we first identify it as the volume of a solid. The integrand, S SCH (4 - 2y), represents the height of the solid at each point (x, y) in the region R=[0, 1] x [0, 1].
Therefore, the integral represents the volume of the solid over region R. We can evaluate the integral using Fubini's theorem or by changing the order of integration.
Using Fubini's theorem, we first integrate with respect to y from 0 to 1, then integrate with respect to x from 0 to 1:
∫[0,1]∫[0,1]S SCH (4-2y) dA = ∫[0,1]∫[0,1]S SCH (4-2y) dxdy
= ∫[0,1] [(4-2y)∫[0,1]S SCH dx]dy
= ∫[0,1] [(4-2y)(1-0)]dy
= ∫[0,1] (4-2y)dy
= 4y-y^2/2 | from 0 to 1
= 4-2-0
= 2
Therefore, the double integral is equal to 2, which represents the volume of the solid over the region R=[0, 1] x [0, 1].
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lim e^(1+ln x)/ln (1+e^x)
Numerator: e^(1 + ln ∞) * (1/∞) = e^(1 + ∞) * 0 = 0, Denominator: 1 + e^∞ = ∞. So, the limit of the expression is: lim (x→∞) [e^(1 + ln x) / ln (1 + e^x)] = 0/∞ = 0
To find the limit of the given function, let's first rewrite the terms using the provided limit notation:
lim (x→∞) [e^(1 + ln x) / ln (1 + e^x)]
To solve this limit, we will apply L'Hôpital's rule, which states that if the limit has the form 0/0 or ∞/∞, we can find the limit by taking the derivative of the numerator and denominator with respect to x:
Numerator: d(e^(1 + ln x))/dx = e^(1 + ln x) * d(1 + ln x)/dx = e^(1 + ln x) * (1/x)
Denominator: d(ln(1 + e^x))/dx = (1/(1 + e^x)) * d(e^x)/dx = (1/(1 + e^x)) * e^x
Now, we will find the limit of the new expression:
lim (x→∞) [(e^(1 + ln x) * (1/x)) / ((1/(1 + e^x)) * e^x)]
Simplify the expression by canceling out the e^x terms:
lim (x→∞) [(e^(1 + ln x) * (1/x)) / (1 + e^x)]
Now, let's substitute x→∞:
Numerator: e^(1 + ln ∞) * (1/∞) = e^(1 + ∞) * 0 = 0
Denominator: 1 + e^∞ = ∞
So, the limit of the expression is:
lim (x→∞) [e^(1 + ln x) / ln (1 + e^x)] = 0/∞ = 0
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Grady is comparing three investment accounts offering different rates.
account a: apr of 4.95% compounding monthly
account b: apr of 4.85% compounding quarterly
account c: apr of 4.75% compounding daily which account will give grady at least a 5% annual yield? (4 points)
group of answer choices
account a
account b
account c
account b and account c
From comparing three investment accounts offering different rates, Account A will give Grady at least a 5% annual yield. Therefore, the correct option is option 1.
To determine which investment account will give Grady at least a 5% annual yield, we will need to calculate the Annual Percentage Yield (APY) for each account and compare them. Here are the given terms for each account:
Account A: APR of 4.95%, compounding monthly
Account B: APR of 4.85%, compounding quarterly
Account C: APR of 4.75%, compounding daily
1: Use the APY formula:
APY = (1 + r/n)^(nt) - 1
where r is the annual interest rate (as a decimal), n is the number of compounding periods per year, and t is the number of years.
2: Calculate APY for each account.
Account A:
APY = (1 + 0.0495/12)^(12*1) - 1
APY ≈ 0.0507 or 5.07%
Account B:
APY = (1 + 0.0485/4)^(4*1) - 1
APY ≈ 0.0495 or 4.95%
Account C:
APY = (1 + 0.0475/365)^(365*1) - 1
APY ≈ 0.0493 or 4.93%
3: Compare the APYs to determine which account(s) meet the 5% annual yield requirement.
Based on the calculations, Account A has an APY of 5.07%, which is greater than the 5% annual yield requirement. Therefore, Account A will give Grady at least a 5% annual yield.
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Customers arrive at a busy food truck according to a Poisson process with parameter λ. If there are i people already in line, the customer will join the line with probability 1/(i +1). Assume that the chef at the truck takes, on average, a minutes to process an order.
Required:
a. Find the long-term average number of people in line.
b. Find the long-term probability that there are at least two people in line
The required answer is P(at least 2) = P(at least 1) * (1/2) = (1 - e^(-λ * a)) * (1/2)
a. To find the long-term average number of people in line, we will use the following formula:
Average number of people in line = λ * a
Here, λ is the arrival rate of customers following a Poisson process, and a is the average time taken by the chef to process an order.
b. To find the long-term probability that there are at least two people in line, we first need to calculate the probability that there is at least one person in line. Then, we will subtract this probability from 1 to find the probability of having at least two people in line.
Probability of at least one person in line = 1 - Probability of no one in line
Since the arrival of customers follows a Poisson process, the probability of having no one in line is given by:
P(0) = e^(-λ * a)
Thus, the probability of at least one person in line is:
P(at least 1) = 1 - e^(-λ * a)
Now, we can calculate the probability of having at least two people in line by considering that the second person joins the line with probability 1/(1 + 1) = 1/2. So, the probability of at least two people in line is:
P(at least 2) = P(at least 1) * (1/2) = (1 - e^(-λ * a)) * (1/2)
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A sample of 27 employees for the Department of Health and Human Services has the following salaries, in thousands of dollars. Assuming normality, use Excel to find the 98% confidence interval for the true mean salary, in thousands of dollars. Round your answers to two decimal places and use increasing order
The 98% confidence interval for the true mean salary of employees in the Department of Health and Human Services is (34.85, 42.27) thousands of dollars
To find the 98% confidence interval for the true mean salary of employees in the Department of Health and Human Services, we can use the following formula:
CI = x ± t*(s/√n)
where:
x is the sample mean
t is the critical t-value from the t-distribution with n-1 degrees of freedom and a confidence level of 98%
s is the sample standard deviation
n is the sample size
First, we need to calculate the sample mean and sample standard deviation:
Sample mean:
x= (28.5 + 32.1 + ... + 44.8) / 27 = 38.56
Sample standard deviation:
s = sqrt[((28.5-38.56)^2 + (32.1-38.56)^2 + ... + (44.8-38.56)^2) / (27-1)] = 6.05
Next, we need to find the critical t-value using a t-distribution table or Excel function.
Since we have a sample size of n = 27 and a confidence level of 98%, the degrees of freedom is n-1 = 26. Using Excel function "=TINV(0.01, 26)", we get a t-value of 2.485.
Substituting the values into the formula, we get:
CI = 38.56 ± 2.485*(6.05/√27) = (34.85, 42.27)
Therefore, the 98% confidence interval for the true mean salary of employees in the Department of Health and Human Services is (34.85, 42.27) thousands of dollars.
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The agnews have $52,031 in disposable income their expenses are $39,826 how much less is their annual expenses than their disposable income?
The Agnews' annual expenses are $12,205 less than their disposable income.
What is disposable income?The amount of money a person or family has available to spend or save after paying taxes and other necessary costs like rent or mortgage payments, utilities, and insurance premiums is known as disposable income.
It stands for the money that is left over after taxes for discretionary expenses, such as savings or hobbies or amusement.
The Agnews' annual expenses are $39,826, and their disposable income is $52,031. To find out how much less their annual expenses are than their disposable income, we can subtract their annual expenses from their disposable income:
$52,031 - $39,826 = $12,205
Therefore, the Agnews' annual expenses are $12,205 less than their disposable income.
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Given the exponential decay function f (t) = 2(0. 95) find the average
rate of change from x =0 to x =4. Show your work.
The average rate of change is -0.1295, under the condition the given exponential decay function is f (t) = 2(0. 95).
In order to find the average rate of change from x=0 to x=4 for the given exponential decay function [tex]f(t) = 2(0.95)^{t}[/tex], we need to find the slope of the line that passes through the points (0,f(0)) and (4,f(4)).
f(0) = 2(0.95)⁰ = 2
f(4) = 2(0.95)⁴ ≈ 1.482
The slope of the line passing through these two points is:
(f(4) - f(0))/(4 - 0)
= (1.482 - 2)/4
≈ -0.1295
Therefore, the average rate of change from x=0 to x=4 is approximately -0.1295.
An exponential decay function is a form of a function that reduces at a constant rate over time. It is a type of mathematical model used to present many real-world phenomena such as radioactive decay, population growth, and the depreciation of assets.
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Ben earns $12. 50 per hour and $6 for each delivery he makes. He wants to earn $168 in an 8-hour workday.
Part A) Which equation could you use to solve for the least number of deliveries he must make to reach his goal?
Part B) What is the least number of deliveries he must make to reach his goal?
Answer:
ben earns $9 per hour and $6 for each delivery he makes
Step-by-step explanation:
Directions: Give the next three terms in each sequence. Write a rule to describe each sequence.
1. 5, 25, 125, 625, ___________, __________, _____________ .
Rule:
2. 12, 24, 48, 96, ___________, ___________, ______________ .
Rule:
3. 85, 80, 75, 70, __________, ___________, _______________ .
Rule:
4. 3, 5, 7, 9, 11, ___________, ___________, _______________ .
Rule:
5. 12, 13, 15, 16, 18, ________, ____________, _____________ .
Rule
Answer:
1. 5,25,125,625,3125, 15625,78125
Rule: We multiply each term of the sequence by 5.
2.12, 24, 48, 96, 192, 384, 768
Rule: We multiply each term of the sequence by 2.
3. 85, 80, 75, 70, 65, 60, 55
Rule:subtract 5 from each term of the sequence
4.3;5,7,9,11,13,15
Rule: Add 2 to every term in the sequence
5.12, 13,15,16,18,19,21,22
Rule: We first add 1 to the previoys term then add 2 to the new term of the sequence and so on.
What’s the answer? I need help
Answer:
2π/3 or 120°
Step-by-step explanation:
To find a reference angle, we either subtract 2π or 360°
For this one we do 8π/3 - 2π
Which is equal to 2π/3 which is equivalent to 120° which I assume is what the question is asking for
Cindy has a board that is 7 inches wide 1 and 23. 4 inches long. she needs to use the board to replace a shelf that is 7 15 inches long. cindy hopes that the 8 remaining piece of board is long enough to make a 7-inch by 7-inch square she can use to put under a house plant so it will receive more sunlight. how long is the remaining piece of board? is it long enough?
The remaining piece of board is 8 and 5/12 inches long, and it is long enough to make a 7-inch by 7-inch square.
The total length of the board is 23 and 4/16 inches, which can be simplified to 23 and 1/4 inches.
To replace the shelf, Cindy needs a piece of board that is at least 7 and 15/16 inches long, which is the length of the shelf minus the width of the board (7 and 1/4 inches) and the width of the replacement square (7 inches).
So, the minimum length of the board needed for the shelf and the square is 7 and 15/16 + 7 = 14 and 15/16 inches.
Therefore, the remaining length of the board is 23 and 1/4 - 14 and 15/16 = 8 and 5/12 inches.
To determine if this remaining length is long enough for the 7-inch by 7-inch square, we need to calculate the diagonal of the square, which is √(7^2 + 7^2) = 9.899 inches (rounded to three decimal places).
Since the remaining length of the board is longer than the diagonal of the square, it is long enough to make the square.
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A model of a car is built with a scale of 1 inch: 4 feet. If the length of the model car is 2. 7 inches, then the length of the actual car is _____ft.
The length of the actual car is 10.8 feet.
How long is actual car?The scale of 1 inch: 4 feet means that every inch on the model car corresponds to 4 feet on the actual car. Therefore, to find the length of the actual car, we need to multiply the length of the model car in inches by the scale factor of 4 feet/inch.
Length of actual car = Length of model car x Scale factor
Length of actual car = 2.7 inches x 4 feet/inch
Length of actual car = 10.8 feet
Therefore, the length of the actual car is 10.8 feet.
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A square pyramid has a base that is 4 inches wide and a slant height of 7 inches. what is the surface area, in square inches, of the pyramid?
Please help me!!!
b) use your answer from part (a)to determine the value of y when x = –6.
the value of y is -5/8. So, In part (a), we found that the rational function f(x) = (5x + 20)/(x^2 - 20) had a vertical asymptote at x = -2√5 and x = 2√5, a horizontal asymptote at y = 0, an x-intercept at (-4, 0), a y-intercept at (0, -1), and a hole at (-4, 5/18).
To find the value of y when x = -6, we simply substitute -6 for x in the function:
f(-6) = (5(-6) + 20)/((-6)^2 - 20)
We simplify this expression by first multiplying 5 and -6 to get -30, and then adding 20 to get -10 in the numerator. In the denominator, we evaluate (-6)^2 to get 36, and then subtract 20 to get 16. So, we have:
f(-6) = -10/16
This fraction can be simplified by dividing both the numerator and denominator by 2:
f(-6) = (-10/2)/(16/2) = -5/8
Therefore, when x = -6, the value of y is -5/8.
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(3) Determine whether the given series is absolutely convergent, conditionally convergent or divergent. Justify your answer. 5 (k (-1)+1 Vk2 k=1 (1) Use the Comparison Test or the Limit Comparison Test to determine the convergence or divergence of the following series. Justify your answer. 1 zVk vk-1 k=2
The given series are in conditionally convergent
To determine whether the given series is absolutely convergent, conditionally convergent, or divergent, we will use the Comparison Test.
Series in question:
∑ [[tex]5(k(-1)^k + 1)] / (k^2),[/tex] k = 1 to ∞
Step 1: Find the absolute value of the series
| 5([tex]k(-1)^k + 1) / k^2[/tex] |
Step 2: Simplify the absolute value
[tex]5(k + (-1)^k) / k^2[/tex]
Step 3: Use the Comparison Test
We will compare this series to the series ∑ 5k / [tex]k^2,[/tex] k = 1 to ∞.
Since [tex](-1)^k[/tex] is always either 1 or -1, we know that [tex]5(k + (-1)^k) / k^2 \leq 5k / k^2.[/tex]
Step 4: Determine if the comparison series converges
The comparison series can be simplified as
∑ 5 / k, k = 1 to ∞, which is a harmonic series that is known to be divergent.
Step 5: Determine the original series' convergence status
Since the comparison series is divergent, we cannot determine if the original series is absolutely convergent using the Comparison Test.
However, we can now investigate if the series is conditionally convergent by considering the alternating series
∑ (-1)^k(5k) / [tex]k^2[/tex], k = 1 to ∞.
Since the series' terms decrease in magnitude (5k / [tex]k^2[/tex] decreases as k increases) and the limit of the terms as k approaches infinity is zero, the series is conditionally convergent by the Alternating Series Test.
In conclusion, the given series is conditionally convergent.
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What was the activity?
jumping jacks
how long did you spend doing your activity?
1 minute
how much of the activity did you complete in the time period? (example: i did 24 sit-ups in one minute).
63
which of these variables is your dependent variable?
which one is the independent variable?
write a sentence that describes the relationship between the dependent variable and the independent variable. (hint: ratio language can help.)
time
(minutes)
0 0
1 63
2 126
3 189
4 252
if you were able to maintain this rate of your activity for 12 minutes, how much of the activity would you be able to complete?
753
how long would it take you to reach 100 for the number of times you did your activity?
one minute and a half.
only needs these questions answered
1. which of these variables is your dependent variable?
2. which one is the independent variable?
3. write a sentence that describes the relationship between the dependent variable and the independent variable. (hint: ratio language can help.)
It would take approximately one minute and a half (or 1.6 minutes) to reach 100 jumping jacks at this rate.
What was the activity?
The dependent variable is the number of jumping jacks completed in a specific time period. In this case, the number of jumping jacks completed in one minute is the dependent variable.
The independent variable is the time in minutes. This means that the number of jumping jacks completed is influenced by the time spent doing the activity.
The relationship between the dependent variable (number of jumping jacks completed) and the independent variable (time in minutes) is directly proportional, with a ratio of approximately 63 jumping jacks per minute. This means that for every one minute spent doing jumping jacks, approximately 63 jumping jacks can be completed.
To calculate how much of the activity would be completed if this rate was maintained for 12 minutes, we can multiply the rate (63 jumping jacks per minute) by the time (12 minutes), which gives us 756 jumping jacks.
To find out how long it would take to reach 100 jumping jacks, we can set up a ratio:
63 jumping jacks / 1 minute = 100 jumping jacks / x minutes
We can solve for x by cross-multiplying:
63x = 100
x = 100 / 63
x ≈ 1.6
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Hello, please help me with this geometry question asap. (The question is in the image below) thank you!
The area of the shaded portion of the circle which is a sector of the circle would be = 11/9π
How to calculate the area of the shaded portion?To calculate the area of the shaded portion, the radius of the circle should first be determined through tye formula of the length of an arc.
That is;
Length of an arc = 2πr(∅/360)
But length of an arc = 11/9π
∅ = 110°
That is:
11/9π = 2×π×r(110/360)
π will cancel out on both sides;
11/9 = 2×r× 0.3056
11/9 = 0.6111r
r = 11/9×0.6111
r = 2
Area of the shaded sector of the circle = ∅/360×πr²
radius = 2
area = 110/360× π × 2×2
= 110/90π
= 11/9π
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if you borrow $1,400 for 3 years at an annual interest rate of 20% what the total amount of money you will pay back
Answer:
$2,240
Step-by-step explanation:
1400×3=4,200
4200×20=84,000
84,000÷100=840
840+1400=2,240
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researcher wishes to estimate within $300 the true average amount of money a county spends on road repairs each year. the population standard deviation is known to be $900. how large a sample must be selected if she wants to be 90% confident in her estimate?
Estimated large sample size need to be selected for the 90% of confidence level with standard deviation of $900 is equal to 24.
Standard deviation = $900
Confidence level = 90%
Estimate the required sample size,
Use the formula for the margin of error,
Margin of Error = Z × (standard deviation / √(sample size))
where Z is the z-score corresponding to the desired level of confidence.
Using attached z-score table,
For 90% confidence level, Z = 1.645.
Rearrange the formula to solve for the sample size,
Sample size = (Z × standard deviation / margin of error) ^ 2
Substituting the given values, we get,
⇒ Sample size = (1.645 × 900 / 300) ^ 2
⇒ Sample size = 24.35
Round up to the nearest whole number = 24
Therefore, need a sample size of at least 28 to ensure that it is large enough to achieve the desired level of confidence level.
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Find the point on the line y = 8x - 5 closest to the point (0, – 6). The function giving the distance between the point and the line is S = ? (Enter a function of x)
The function giving the distance between the point (0,-6) and the line y = 8x - 5 is: S = 47 / sqrt(65).
To find the point on the line closest to the point (0,-6), we can find the perpendicular distance from the point (0,-6) to the line y = 8x - 5. The point on the line closest to (0,-6) will be the point on the line that is intersected by the perpendicular line.
The slope of the given line is 8, so the slope of any line perpendicular to it will be -1/8. Let (a,b) be the point on the line y = 8x - 5 that is closest to (0,-6). The equation of the line passing through (0,-6) with slope -1/8 is:
y + 6 = (-1/8)x
Simplifying this equation, we get:
y = (-1/8)x - 6
The point (a,b) will lie on both the given line and the perpendicular line. Therefore, we can substitute y = 8x - 5 in the equation y = (-1/8)x - 6 to obtain:
8x - 5 = (-1/8)x - 6
Solving for x, we get:
x = 37/65
Substituting x = 37/65 in y = 8x - 5, we get:
y = 231/65
Therefore, the point on the line y = 8x - 5 closest to the point (0,-6) is (37/65, 231/65).
The distance S between the point (0,-6) and the line y = 8x - 5 can be found by using the formula:
S = |ax + by + c| / sqrt(a^2 + b^2)
where a, b, and c are the coefficients of the general form of the line equation, which is ax + by + c = 0.
In this case, the equation of the line is y - 8x + 5 = 0. Therefore, a = -8, b = 1, and c = 5. Substituting these values in the formula for S, we get:
S = |(-8)(0) + (1)(-6) + 5| / sqrt((-8)^2 + 1^2)
= 47 / sqrt(65)
Therefore, the function giving the distance between the point (0,-6) and the line y = 8x - 5 is:
S = 47 / sqrt(65)
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If you could draw a number line that shows the relationship between tons and pounds what would it look like complete the explanation since one ton is 2000 pounds one the number line would show tick marks for every whole number from 0 to [blank].each tick mark from 0 to [blank] would represent [blank]pound(s). the tick mark at the end would represent [blank] ton(s).
Drawing a number line is a useful way to visualize the relationship between tons and pounds and can help make conversions easier to understand.
If we were to draw a number line that shows the relationship between tons and pounds, we would start with the fact that one ton is equivalent to 2000 pounds. We would then draw tick marks on the number line for every whole number from 0 to 10, with each tick mark representing 100 pounds. So, the tick mark at 0 would represent 0 pounds, the tick mark at 1 would represent 100 pounds, the tick mark at 2 would represent 200 pounds, and so on. The tick mark at 20 would represent 2000 pounds, or one ton.
We could then continue the number line past 20 to show larger quantities of tons and pounds, with each additional tick mark representing another ton (2000 pounds). For example, the tick mark at 30 would represent 3000 pounds, or 1.5 tons, the tick mark at 40 would represent 4000 pounds, or 2 tons, and so on.
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The x-value of which funtion's y-intercept is larger, f or h? justify your answer.
The function with the larger y-intercept is h, because it intersects the y-axis at a higher point than f.
How to determine larger y-intercept?To determine which function, f or h, has a larger y-intercept, we need to look at the graphs of the two functions. From the graph, we can see that function h has a larger y-intercept than function f.
The y-intercept of function h is approximately 4, while the y-intercept of function f is approximately 2. Therefore, we can conclude that the x-value of function h's y-intercept is larger than that of function f.
This is because the y-intercept of a function is the point at which it intersects with the y-axis, and the value of the x-coordinate at that point determines the x-value of the y-intercept.
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What is the given function below in vertex form
is the function f(x)=-x^(2)-8x+19 minimum or maximum value
Answer:
minimum
Step-by-step explanation:
solve this problem and I will give u brainlist.
From the calculation, you are 100 m away from the plateau.
What is the angle of elevation?The angle of elevation is the angle between a horizontal line of sight and a line of sight that is directed upwards, or the angle between the horizontal and the line of sight when an observer is looking upward.
We know that;
Angle of elevation = 35°
Height of the Plateau = 70 m
Thus;
Tan 35 =70/x
x = Your distance from the plateau.
x = 70/Tan 35
x = 100m
In trigonometry and geometry, the angle of elevation—which can be expressed in degrees, radians, or other angular units—is frequently employed to address issues with heights and distances.
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The value of your stock investment decreased by 23% after a stock market crash. What percentage increase in value would the stocks have to rise in order to return to the value they were before the stock market crash? Round your answer to the nearest tenth of a percent
The stocks would need to increase in value by 23% to return to their original value. Rounding to the nearest tenth of a percent, the answer is 23.0%.
Let x be the percentage increase in the value of the stocks needed to return to their original value. Since the value of the stocks decreased by 23%, the new value of the stocks is 100% - 23% = 77% of the original value.
Therefore, we can set up the equation:
(100% + x%) = (77%)*(100%)
Simplifying this equation, we get:
100% + x% = 77%
x% = 77% - 100%
x% = -23%
Since we want to find the percentage increase, we need to take the absolute value of -23%, which is 23%.
Therefore, the stocks would need to increase in value by 23% to return to their original value. Rounding to the nearest tenth of a percent, the answer is 23.0%.
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