The value of y varies directly with x. If x = 15, then y = 12. What is the value of y, when x = 21?
A.26.25
B.16.8
C.0.8
D.1.25

Answers

Answer 1

Answer:

The answers A

Step-by-step explanation:

Use ratios such that x1/y1= x2/y2

Need to find x2

So it works much easier if you use x as the numerator, giving 15/12=x/21

Multiply both sides by 21 and we have 21 x 15/12=x x 21/21

and 21/21=1 giving: x=21 x 15/12= 26 1/4

and in decimal form is 26.25

Answer 2

Answer:

Step-by-step explanation:


Related Questions

Which expression is modeled by this arrangement of tiles?

30 positive tiles are divided into 3 sets of 10 positive tiles.
30 divided by (negative 30)
30 divided by (negative 3)
30 divided by 3
30 divided by 30

Answers

Answer:

30

Step-by-step explanation:

alot of 3's

Answer:

Its letter C have a good day :)

Step-by-step explanation:

Sylvia wants to rent a kayak. Company A charges $20 plus $6 per hour. Company B charges $8 plus $12 per
hour.
At how many hours will the price to rent a kayak from Company A and Company B be the same?

Answers

Answer:

At how many hours will the price to rent a kayak from Company A and Company B be the same?

Company A (h) :  0.77   1.53        

Company B (h) :   1.00   2.00

Step-by-step explanation:

Answer: 690

Step-by-step explanation:

help me please.............................................

Answers

Answer: it is C

Step-by-step explanation:

The equation y=3x-4 represents the relationship in which of the following tables?

Answers

Answer:

c

Step-by-step explanation:

if u look at 0 it has -4 so it is that

An online company lets you download songs for $1 each
after you have paid a $5 membership fee. The maximum
number of songs you can download in a month is 100.
How much do you pay?

Answers

Answer:$105

Step-by-step explanation:

I think but the way I done it was a 100 *1+5

Please help due soon will give brainliest

Answers

(4,3) is the intersection (where the graphs meet

Answer:

The intersect point 4,3 H

Step-by-step explanation:

Hope this helps. Have a fantastic day!

!!PLEASE ONLY ANSWER IF U ACTUALLY KNOW!! GRAPHING!!

Answers

Answer:

-3/5 rise over run left doen arenegative right up are positive

Answer:

I think -5/3.............

hello, pls help me. <3

Answers

Answer:

D. 12

Step-by-step explanation:

help me with this plzz

Answers

Answer:

6.3 I think

Step-by-step explanation:

it should be 6.3 maybeee

Answer:

10,000 x 0.63 = 6,300

Step-by-step explanation:

Hope this helped!!

Please help before i fail my assignment, i need to find the point slope form of all five of these graphs

Answers

Answer:

1. 4/2

2. 2/4

3. 4/-4

4. 0/2

5.3/4

i am so sorry if i am wrong

If the volume of a cylinder is 900 cm squared with a height of 20 cm, what
is the diameter of the cylinder? Round to the hundredths.

Answers

Answer:

The diameter is 7.6 cm

Step-by-step explanation:

Mathematically, the volume of a cylinder can be calculated using the formula;

V = pi * r^2 * h

From the question;

V = 900

r = ?

h = 20

Substituting these values

900 = 3.142 * r^2 * 20

r^2 = (900)/(3.142 * 20)

r^2 = 14.32

r = √14.32

r = 3.78 cm

Mathematically, the diameter is 2 times the radius

We have this as;

2 * 3.78 = 7.6 cm

If you help me I’ll give brainliest and 20 points

Answers

Answer:

I believe its 1, 2, and 4

Step-by-step explanation:

hope I helped I may be wrong tho

.................................................

Will someone help! i will mark brainliest

Answers

Answer:

A

Step-by-step explanation:

Fraction of Juniors in Company B over total number of students.

What is this expression in simplified form?

Answers

Answer: C.) 54\sqrt{2} or [tex]54\sqrt{2}[/tex]______________________________________Honey to fin the answer just simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.. (´= ▽ =`)______________________________________

Hope you have a good day, Loves!~ <3

Also please tell me if I'm wrong or not...

Also also if I'm right can I please have Brainliest?

I think it's A

cause I said so

Plz help me get the right answer

Answers

Answer:

- 13x² + 7x + 6

Step-by-step explanation:

- 4x² + 6 - (9x² - 7x) ← distribute by - 1

= - 4x² + 6 - 9x² + 7x ← collect like terms

= - 13x² + 7x + 6

are there any overall patterns in the data set? striking deviations? use mathematical reasoning to justify your answer

Answers

Answer:

There is an outlier at 0, and a gap at 1,2, and 3. The peak is at 5, and the plot is more or less skewed left.

Step-by-step explanation:

Please change the wording, this is what said. :) (Edge2020)

Answer:

An outlier is at 0 and gaps at 1,2 and 3. The peak is at 5, and the plot is more or less skewed left.

Step-by-step explanation:

change wording or they'll see you got it from here...

give the person above credit

hiiii pls help i’ll give brainliest if you give me a correct answer ty!

Answers

Answer:

No

Step-by-step explanation:

0.025 + 0.17 does not equal 0.042.

Can anyone help? I’ll give brainly if answer is correct!

Answers

12 centimeters i believe

Witch pair of lines are perpendicular
A) y= 4x - 6
y= 4x + 11
B) y= -4x - 6
y= 4x + 11
C). y= 1/4x - 6
y= 4x + 11
D). y= -1/4x - 6
y= 4x + 11

Answers

Answer:

Step-by-step explanation:

$ 3/10 ​of bikes turned out to be defective during a bike inspection. What percentage is that?

Answers

Answer: 30%

Step-by-step explanation:

please help ill mark you brainliest!​

Answers

Answer:1/27

Explanation:

is it a right triangle?

Answers

Answer:

Yes

Step-by-step explanation:

Ricardo drove 15 miles in 20 minutes. What was his average rate in miles per hour?
(number form)

Answers

Answer:3/4 miles per hour

Step-by-step explanation:

Simplify the fraction 20/15 to get 3/4 per hour or 0.75 miles per hour

ovided line. (1 pt. each)
9.)Write 4x - 2y = -6 in function form
A) y = 3x + 2
B) y = 2x - 3
C) y = 2x + 3
Meeting now 16:47
D) -2y = -4x - 6

Answers

Answer:

The function form of the given equation

                        y   = 2 x + 3

Step-by-step explanation:

Explanation:-

Given   4x - 2y = -6

            4 x + 6 = 2 y

            [tex]y = \frac{4x}{2} + \frac{6}{2}[/tex]

          y   = 2 x + 3

The function form y = f(x)

The function form of the given equation

                        y   = 2 x + 3

2x+5-x+10=1x-5+3x what does x=

Answers

The answer for x=20/3

how mini time does 7 go into 12

Answers

Answer:

Once!

Step-by-step explanation:

Cause 7 times 2 is 14 so it can't be 2.

I hope this helps and have a great day! :)

Answer:

1 Remindaer 5

Step-by-step explanation:

7 goes into 12 once, then subtract 7 and you get the remander which is five

We can think of 3 ÷ 1/4 as the answer to the question “How many groups of 1/4 are in 3?” What is the answer to the question

Answers

Answer: 12

Step-by-step explanation: 3*4/1 = 12/1 =12

7/9 - 3/9 = ???????????????????????????????

Answers

Answer:

Either 4/9 as a fraction or 0.44444444447

Is it linear or nonlinear

Answers

Answer:linear

Step-by-step explanation:

the line is going straight

The length of Dwight's garden is 12.5 meters. Dwight measured it but made a measurement error of 6%. Find the lowest and highest measurement Dwight could have made. Show your work.

Answers

Answer: See Explanation

Step-by-step explanation:

From the question, The length of Dwight's garden is 12.5 meters but he measured it and made a measurement error of 6%.

The lowest measurement Dwight could have made will be:

= 12.5 - (6% × 12.5)

= 12.5 - (0.06 × 12.5)

= 12.5 - 0.75

= 11.75 meters

The lowest measurement Dwight could have made will be:

= 12.5 + (6% × 12.5)

= 12.5 + (0.06 × 12.5)

= 12.5 + 0.75

= 13.25 meters

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