Please help me and answer that ??

Please Help Me And Answer That ??

Answers

Answer 1

Answer: A. 7/21 = 1/x

Step-by-step explanation: 7/21 = 1/3 so x would be 3.


Related Questions

Televisions are on sale for 40% OFF the original price of $600. After tax (8.5%) is applied, what is the final price?​

Answers

First, determine what is 40% of $600. Multiple 40 (as a decimal) by 600.

0.4 x 600 = 240

Therefore, the discount is $240 off $600.

Subtract the two values to find price (before tax): 600 - 240 = 360

So the TV will cost $360 before tax.

The tax is 8.5%. Multiply 8.5 as a decimal by 360 to find the amount of tax added.

0.085 x 360 = 30.6

Add 30.6 and the price before tax to find the final price.

30.6 + 360 = 390.60

Therefore, the final price of the TV is $390.60

Two pools are being filled with water. To start, the first pool had 1850 liters of water and the second pool had 1334 liters of water. Water is being added to the first pool at a rate of 27 liters per minute. Water is being added to the second pool at a rate of 39 liters per minute. (a) For each pool, write an expression for the amount of water in each pool after x months. (b) Write an equation to show when the two pools would have the same amount of water.

Answers

Answer:

a)Total amount of water in pool 1 after x minutes = 1850+27x

Total amount of water in pool 2 after x minutes = 1334+39x

b) an equation to show when the two pools would have the same amount of water is 1850+27x= 1334+39x

Step-by-step explanation:

First Pool :

Initial amount of water in Pool = 1850 liters

Water is being added to the first pool at a rate of 27 liters per minute.

Amount of water added after x minutes = 27x

So, Total amount of water after x minutes = 1850+27x

Second Pool:

Initial amount of water in Pool = 1334 liters

Water is being added to the first pool at a rate of 39 liters per minute.

Amount of water added after x minutes = 39x

So, Total amount of water after x minutes = 1334+39x

Now to find  an equation to show when the two pools would have the same amount of water.

1850+27x= 1334+39x

1850-1334=39x-27x

516=12x

[tex]\frac{516}{12}=x[/tex]

43 =x

Hence

a)Total amount of water in pool 1 after x minutes = 1850+27x

Total amount of water in pool 2 after x minutes = 1334+39x

b) an equation to show when the two pools would have the same amount of water is 1850+27x= 1334+39x

What is the slope of the line perpendicular to y = 4x + 2

Answers

Answer:

slope is -1/4

Step-by-step explanation:

y = 4 x + 2

Use the equation y = m x + b

So m=4

And MPerpendicular=-1/4

Hope this helps!!

RS¯¯¯¯¯¯ bisects ∠QRT. If m∠QRT = 116°, what is m∠QRS?

A. 26°
B. 232°
C. 64°
D. 58°

Answers

Answer:

D. 58

Step-by-step explanation:

pretty easy clap

bisecting is midpoint which makes the two angles congruent

Regina's teacher recently gave her a homework assignment on solving equations. Since she has been ti
she decided to use the assignment as an opportunity to model a savings plan.
She created this equation to model the situation. In it, y represents the total amount saved for the new
she has now, 40 is the amount of money she saves each month for the phone, and x represents the num
a regular amount:
74 + 40x=y.
She then solved the equation to determine how many months she'd need to save to have enough to pur
work, and select the error.
Justification
1: given
2: subtraction property of equality
3: simplification
4: multiplication property of equality
5: simplification
6: substitution, y = 834
7: simplification
Step 1:
Step 2:
Step 3:
Step 4:
74 + 40x=y
74 + 40x - 74 = y- 74
40x = y-74
40.5 y - 74
40 =
40
y - 74
X= 40
834 - 74
X = 40
Step 5:
Step 6:

Answers

Answe

Step-by-step explanation:

need brainest pls

show your work
answer:v/7= 8

Answers

Answer:

V=56

Step-by-step explanation:

7x8=56

56/7=8

Answer:

v=56

Step-by-step explanation:

1 Multiply both sides by 77.

v=8\times 7v=8×7

2 Simplify  8\times 78×7  to  5656.

v=56


What is the solution to the system shown here?
x + y 25
x + y = 5

Answers

Answer:

no solution (parallel lines )=1/1=1/1=5/1

Step-by-step explanation:

(PLS HELP 50 PTS + BRANLIEST)
A={2, 3, 5, 7, 10} B={1, 4, 6, 8, 9, 10}, C={5, 6, 7}. The universal set U={1, 2, 3, 4, 5, ...10} List the elements of the following:

AUC=
A⋂U=
A⋂Ø=
Ā=
ĀUB=

Answers

Answer:

AUC= {2,3,5,6,7,10}

The second one=A

The third one= empty

I'm sorry. I don't know the others.

Suppose that you are attempting to estimate the annual income of 1700 families. In order to use the infinite standard deviation formula, what sample size, n, should you use

Answers

Answer:

Sample size should be less than 85

Step-by-step explanation:

Sample size should be less than 85

Step-by-step explanation:

To use the infinite standard deviation formula, n has to be <= (0.05)(1700)

n <= 85

So the sample size has to be less than 85

In another way too,

n = sample size

N = population size

For population, we multiply correction factor to the infinite standard deviation

F is <= 0.05

[tex]n/{N} <0.05[/tex]

n<0.05x1700

n<85

Sample size should be less than 85

RS = 4x – 9, ST = 19, RT = 80 – 14

Equation:

82 – 14

RS

RT

Answers

Step-by-step explanation:

The expressions are not properly written

Given

RS = 4x – 9

ST = 19

RT = 8x – 14

Based on the given parameters, the addition postulate below is true

RS+ST = RT

Substitute

4x-9+19 = 8x-14

collect like terms

4x-8x = -14-19+9

-4x = -33+9

-4x = -24

x = -24/-4

x = 6

Get RS:

RS = 4x-9

RS = 4(6)- 9

RS = 24-9

RS = 15

Get RT:

RT = 8x - 14

RT = 8(6)-14

RT = 48-14

RT = 34

The mean useful life of car batteries is 48 months. They have a standard deviation of 3. Assume the useful life of batteries is normally distributed. a. Calculate the percent of batteries with a useful life of less than 45 months. (Round your answer to the nearest tenth percent.) b. Calculate the percent of batteries that will last longer than 54 months. (Round your answer to the nearest tenth percent.)

Answers

Answer:

a) 15.9%

b) 2.3%

Step-by-step explanation:

We solving using z score formula. This formula is given as:

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

a. Calculate the percent of batteries with a useful life of less than 45 months. (Round your answer to the nearest tenth percent.)

x = 45, μ = 48, σ = 3

z = 45 - 48/3

= -1

Probability value from Z-Table:

The probability of batteries with a useful life of less than 45 months so

P(x<45) = 0.15866

Converting to percentage

0.15866 × 100 = 15.866

Approximately to the nearest tenth of a percent = 15.9%

b. Calculate the percent of batteries that will last longer than 54 months. (Round your answer to the nearest tenth percent.)

x = 58, μ = 48, σ = 3

z = 58 - 48/3

= 2

Probability value from Z-Table:

P(x<54) = 0.97725

P(x>54) = 1 - P(x<54)

= 0.02275

The probability of batteries that will last longer than 54 months is 0.02275

Converting to percentage

0.02275 × 100

= 2.275%

Approximately to the nearest tenth of a percentage = 2.3%

whats 10+-6. is it

16

-4

4

-16​

Answers

The answer is 4. Adding a negative number is the same as subtracting a positive number, so just think of it as 10-6.

Rewrite the equation in standard form.

y=2x-10

Answers

Answer:

The equation in standard form:

2x-y-10=0

15 men can dig a trench of 90 m long in
3 hours. How long will it take 16 men
to dig a trench 48 m long?​

Answers

Answer:

1.5 hours= 1hr 30m

Step-by-step explanation:

90÷15=6

6÷2=3

48÷16=3

3÷2=1.5

Mark me as brainliest if u found it helpful

Using proportional variables, it is found that it will take 1.5 hours for 16 men  to dig a trench 48 m long.

The time needed is direct proportional to the length of the trench, and inverse proportional to the number of men, thus, the equation is:

[tex]t = k\frac{l}{m}[/tex]

In which:

t is the time.k is the constant of proportionality.l is the length of the trench.m is the number of men.

15 men can dig a trench of 90 m long in 3 hours, thus [tex]m = 15, l = 90, t = 3[/tex], this is used to find k.

[tex]t = k\frac{l}{m}[/tex]

[tex]3 = k\frac{90}{15}[/tex]

[tex]6k = 3[/tex]

[tex]k = \frac{3}{6}[/tex]

[tex]k = 0.5[/tex]

Thus:

[tex]t = 0.5\frac{l}{m}[/tex]

16 men, 48m long, thus [tex]l = 48, m = 16[/tex], and the time is:

[tex]t = 0.5\frac{l}{m} = 0.5 \times \frac{48}{16} = 0.5(3) = 1.5[/tex]

It will take 1.5 hours for 16 men  to dig a trench 48 m long.

A similar problem is given at https://brainly.com/question/14876746

Use the substitution method to determine the solution type of the following system.

3y – 6x = 3

y = 2x + 1

Question 7 options:

Infinitely many solutions


(3, –1)


(2, 0)


No solutions

Answers

Answer:

Step-by-step explanation:

3y – 6x = 3     -----------------------------------(I)

y = 2x + 1      ----------------------------------(II)

Substitute y = 2x + 1 in equation (I)

3*(2x+ 1) - 6x = 3

3*2x + 3*1 -6x = 3

  6x + 3 - 6x = 3              

               3 = 3

So, no solutions

Answer:

Use the substitution method to determine the solution type of the following system.

3y – 6x = 3

y = 2x + 1

Correct Answer

Infinitely many solutions

No solutions

(3, –1)

(2, 0)

Step-by-step explanation:

what is 1x1x1x1xx2x3xx4x6xx8xx0x9x-x8x76xx54xx6x45c3xx6357x63x

Answers

Answer:

The answer to 1x1x1x1xx2x3xx4x6xx8xx0x9x-x8x76xx54xx6x45c3xx6357x63x

is 4,727,808

Step-by-step explanation:

the 3 in 43.54 is how much larger than the 3 in 56.37?

Answers

Answer:

10 times larger

Step-by-step explanation:

I used my brain plus I learned it in 5th grade

(1 point) Rework problem 15 in section 2 of Chapter 5 of your textbook about the growing suburb and the declining city using the following data: Assume that the suburb has a population of 320000 and is growing at a rate of 5000 per year. Assume that the city has a population of 624000 and is declining at a rate of 14000 per year. In how many years will the populations of the suburb and the city be equal

Answers

Answer:

16 years

Step-by-step explanation:

Let x represent the number of years. The suburb population is growing at a rate of 5000 per year after x years, it can be represented by the equation:

320000 + 5000x

The city population is declining at a rate of 14000 per year after x years, it can be represented by the equation:

624000 - 14000x

The number of years for the city and suburb population to be equal can be gotten from:

320000 + 5000x = 624000 - 14000x

14000x + 5000x = 624000 - 320000

19000x = 304000

x = 304000 / 19000

x = 16

In 16 years the populations of the suburb and the city be equal

The total cost for 22 gallons of gas is $68.30. How many dollars per gallon of gas did you spend?

Answers

Answer:

$3.10 per gallon

Step-by-step explanation:

Take the total cost and divide by the number of gallons

68.30/22

3.1045454545

Round to the nearest cent

$3.10 per gallon

Answer:

$3.10 per gallon

Step-by-step explanation:

You just have to divide $68.30 by 22. (And round)

$68.30 divided by 22 = 3.10

So, you answer will be 3.10

= $3.10 per gallon

Hope this helps! And happy Halloween x-x

^w^


Two triangles are shown to be congruent by identifying a combination of translations, rotations, or reflections that move one figure onto the other. If ΔACB ≅ ΔPRQ, which angle must be congruent to ∠C? Why?
A) ∠Q because corresponding parts of congruent triangles are congruent.
B) ∠R because corresponding parts of congruent triangles are congruent.
C) ∠Q because the triangles are isosceles and the base angles are congruent.
D) ∠R because the triangles are isosceles and the base angles are congruent.

Answers

Answer:

C. ∠Q because the triangles are isosceles and the base angles are congruent.

May I have brainliest please? :)

Answer:

B is the answer

Step-by-step explanation:

Cuz i just got it wrong because of the Bozo above me . . . all love  

Write the set that represents the set of people surveyed who subscribe to at least one of the two news sources given.

Answers

Complete  Question

The complete question is shown on the first uploaded image

Answer:

The correct option is  d

Step-by-step explanation:

From the question we are told that

   The set of people in a certain community who were asked if they subscribe to an information source is  U

    The  set that subscribes to The Daily Informer is  D

      The set that subscribe to News Magazine is  N

Here the universal set is  U

Now the word at least here means that the person can subscribe to one or two of the information source , but the person  cannot subscribe none of the information source

Now to get the set that represents the set of people surveyed who subscribe to at least one of the two news sources , we need to carry out a union operation on the sets representing the two news source , this can be mathematically represented as

      [tex]L  =  N \  u \  D[/tex]

So the sets that will contain all the people in the community that subscribe to at least one of the news source is  L      

     

an earthquake with a magnitude of about 2.0 or less is called a micro earthquake it is not usually fell to the intensity of an earthquake with a magnitude of 2 is how many times greater than the intensity of a standard earthquake? M=log I/S
-Answer choice-
2 times greater
10 times greater
100 times greater
1,000 times greater

Answers

Answer: 100 times greater

Step-by-step explanation:

Second question answer is: 1000 times a standard earthquake

Whats the circumference of a circle object that's 2 meters ?

Answers

I think the answer is 12.57

Janisa researched fast-growing industries and occupations, while Rylan researched industries and occupations that have the highest employment. Which most likely describes Janisa and Rylan’s findings? Janisa found that home health care is the fastest growing occupation and services for the elderly is the fastest growing industry, while Rylan found that elementary and secondary school teaching are the occupations with the highest employment and retail sales is the industry with the highest employment. Janisa found that services for the elderly is the fastest growing occupation and home health care is the fastest growing industry, while Rylan found that retail sales is the occupation with the highest employment and elementary and secondary school teaching is the industry with the highest employment. Janisa found that home health care is the fastest growing occupation and services for the elderly is the fastest growing industry, while Rylan found that retail sales is the occupation with

Answers

Answer:

Janisa found that home health care is the fastest-growing occupation and services for the elderly is the fastest growing industry, while Rylan found that elementary and secondary school teaching are the occupations with the highest employment and retail sales is the industry with the highest employment.

Explanation:

We make this conclusion because when we look at all the other options none matches the definition of occupations and industries. However, if Janisa found that home health care is the fastest-growing occupation, and then services for the elderly are the fastest growing industry, it matches what we know an industry and occupation mean.

While, if Rylan found that elementary and secondary school teaching are the occupations with the highest employment, it matches an example of occupation also, and if he discovers that retail sales is the industry with the highest employment it also falls under industry types.

However, the other options mismatched industry examples for occupations.

Answer:I think the answer is C the third option

Step-by-step explanation:

A square rug covers 79 square feet of floor. What is the approximate length of one side of the rug? (Approximate to the nearest hundredth foot.) PLEASE HELP!!

Answers

Answer:

A = a^2.....the Area (A) of a square = a^2...where a = one side

79 = a^2...now take the sqrt of both sides, this eliminates the ^2

sqrt 79 = a

8.888 rounded = 8.89 = a......so one side = 8.89 ft

Step-by-step explanation:

in order to solve the following sye of equations by subtraction, which of the following could you do before subtracting the equations so that one variable will be eliminated when you subtract them? 4x-2y=7. 3x-3y=15

Answers

Answer:

dnhyfnvnvghdkd

Step-by-step explanation:

duhfgjfvnhfuvejfgkejiu

PLEASE HELP ASAP
Use the discriminant to determine how many real number solutions exist for the quadratic equation −4x2 + 3x –28 = 0.
Question 2 options:

A)

0

B)

3

C)

2

D)

1

Answers

The answer is B because I just did it

If you roll a die once, what is the probability of rolling a 3?

Answers

Answer:

1/6

Step-by-step explanation:

there are 6 sides, and 3 is one of the 6 sides. thus, the answer is 1/6

Answer:

1/6

Step-by-step explanation: there are 6 incomes and 1 number 3 in a die

can yall help me out please.​

Answers

Answer:

which one equals 12? option C

Step-by-step explanation:

How can I prove to my teacher I’m smart when I’m a kinda low-key student to her. Especially in mathematics.

Answers

Answer:

Do your work? Especially if you do it fast, it amazes them lol

Other Questions
2+2+2-2x4x9x2+2+2+4+4x9+1938x3871 Nicole needs to drive a total of 26 miles. So far, she has driven 7.9 miles. How many more miles must Nicole drive? 11What views did Enlightenmentthinkers have about progress? Howdid that affect their views of differentsocieties?I Question HelpJane took 30 min to drive her boat upstream to water-ski at her favorite spot. Coming back later in the day, at the same boat speed, took her 20 min. If the current inthat part of the river is 4 km per hr, what was her boat speed in still water?Her boat speed in still water was km per hr. SoccerSoccer is more than just a sportIt's a common language andShared by many. a bag of grapes weighs 5/8 of a pound. Before any was eaten, the bag of grapes weighed 4 times this amount. What is the weight of the original bag of grapes Each strand of s DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A diagram of a section of DNA is shown. DNDA Strand 3' _|___|___|___|___|___|___|___|___|___|___|___|___|_ 5' T G T A G C T G C G C G T Which DNA strand is complementary to the one shown above? PLSSS!! HELP ME WITH THIS ASAP!! Roose, Inc. reported revenue of $92 million and incurred total expenses of $84 million. The total expenses included cost of goods sold of $50 million, salaries and other administrative expenses of $9 million, $11 million of interest paid on a building's mortgage, and $14 million of depreciation. Assuming Roose is subject to the interest expense limitation, what amount of interest expense can the business deduct in the current year true or false mrs.morningstar loved her brother Which best explains how photosynthesis is helpful to humans? OIt reduces the amount of harmful rays released by the sun. O It increases the levels of carbon dioxide in the air. O It provides oxygen for humans to breathe. OIt produces proteins, which humans can eat. Of the following, which is the most important reason that voter turnout is lower in the United States than in most other industrial democracies. American citizens are more apathetic than are citizens in other democracies. American citizens are more apathetic than are citizens in other democracies. A There are fewer elections in the United States than in other democracies. There are fewer elections in the United States than in other democracies. B It has traditionally been more difficult to register to vote in the United States than in most other industrial democracies. It has traditionally been more difficult to register to vote in the United States than in most other industrial democracies. C United States elections receive less media attention than do elections in other democracies. United States elections receive less media attention than do elections in other democracies. D Unlike other industrial democracies, the United States has a two-party system. Explain three (or more) specific ways the British transitionedfrom salutary neglect to a new, imperial policy in order toreassert control over its colonies following the French andIndian War. helppWhich mistake makes a journalist or news service seem least credible?forgetting a punctuation markusing an anonymous sourcemisspelling a wordcorrecting false information they previously published One factor that caused Texas to declare independence from Mexico was a. Mexican attitudes of racial superiority. b. a desire for unrestricted trade with the U.S. c. anger over the continued existence of slavery in Mexico. d. the decreasing numbers of immigrant settlers. In the early morning, he moved quite sluggishly How have the owners of the game reserve invested in the local community? STORAGE COSTS According to a certain prediction equation, the cost of 200 square feet of storage space is $60. The cost of 325 square feet of storage space is $160. Find the slope of the prediction equation (in decimal form). Use the prediction equation to calculate the cost of 520 square feet. (use slash symbol to separate both answers, do not space) 14. A cable company charges a $30 base installation fee plus $10 for every hour it takes to install all the equipment in your house. Write an equation in slope-intercept form that models the price of your installation as a function of the amount of time it takes. A. y=30x+10 B. y=10x+30 C. y=10x-30 D. y=30x-10 1. What is the total amount of carbon removed from the atmosphere each year by the ocean and land plants?2. What is the total amount of carbon added to the atmosphere from soil and the burning of fossil fuels?3. How much will atmospheric carbon change in one year?*From the Carbon Cycle Gizmo