Mathematics Middle School

The value y of varies directly with x. When y = 19.375, x = 7.75.
What is the value of x when y is 21.5?
A.10.5

B.5.6

C.8.6

D.2.5

Answers

Answer 1

Answer: (X,Y) = (0.4, 7.75)

Step-by-step explanation:

Y=7.75,

19.375X=7.75

Then solve for X

Divide 19.375 on both sides to get X=0.4

Y=7.75

X=0.4

Answer 2
c. 8.6 i think i’m not sure

Related Questions

Another brand of sheets is on sale 30% off with a regular price of $18.00 per sheet. Which is a better deal, the previous example or this one? Explain

Answers

Answer:

It would cost 12.60 dollars for the company in the problem. If you could send the other company's deal I could write the answer in the comments.

Step-by-step explanation:

100% - 30% = 70%

70% to demical = 0.7

So, I would do...

18 times 0.7 to get 12.6

The answer you get would be $12.6

The formula I used for this was...

( T ) * ( 1 - S ) = F

T is the Total cost

S is the amount of sale in percent to decimal form

F is the final amount

Hope this helps :)

The ratio of boys to girls at a day care center is 2:5. There are 16 boys at the center. What is the total number of boys and girls in the center?


a. 16

b. 40

c. 56

d. 19

Answers

The answer is B. 40

You have to multiply 2 times 8 to get 16 so you have to do that to the other side so you multiply 5 times 8 and you get 40.

Answer:

C

Step-by-step explanation:

2 : 5

16:?

So we need to make cross method. So,

5*16: 80

and

2*x: 2x

[tex] \frac{2x}{2} [/tex]

[tex] \\ \frac{80}{2} [/tex]

So divide both side and we got x:40

Total girls and boys: 56

peyton ran 4/5 of a mile in 1/8 of an Hour. What is Peyton's constant of proportionality in miles per hour?

Answers

Answer:

6.4 Miles Per Hour

Step-by-step explanation:

Let h be hours

Let mi be miles

We put this in equation form

4/5mi = 1/8h

In order to calculate the rate we would have to make h singular therefore we multiply both sides by 8

4/5mi * 8 = 1/8h * 8

= 32/5mi = h

= 6.4mi = h

Answer:

pmg hsiskenenejeeisisisisossiwkwnevheej

Can you answer this
-What practical effect does Discovery impose on the Right of Occupancy?

copy and paste this into a new tab its the notes

https://docs.
google.
com/doc
ument/d/1
-p4VbQhpnE
N2HFI0Igrqwb
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nh_og/edit

Answers

Answer:

i tried to copy and paste but i dont have access to the document. sorry, maybe try putting a picture instead

The ratio of North American Butterflies to South American butterflies at a butterfly park is 7:5. The ratio of South American butterflies to European butterflies is 5:2. There are 70 North American butterflies at the butterfly park.

Answers

Answer:

There are 70 North American butterflies, 50 South American butterflies, and 20 European butterflies.

Step-by-step explanation:

NA butterflies: SA butterflies: E butterflies

7:5:2

To get 70 North American butterflies, you would have to multipy the ration by 10. As such, 5 times 10 = 50 and 2 times 10 = 20.

Which real-world situation matches the data in the table?

Hours
Dollars
1
7
2
14
3
21
4
28

Kendra needs to earn 7 more dollars
Kendra earns 7 dollars per hour.
Kendra lost 7 dollars.
Kendra earns a dollar for every 7 hours she works.

Answers

Answer:

Kendra earns 7 dollars per hour

Step-by-step explanation:

amount of dollars goes up by 7

Hope this answers your question

Answer: the way you put this is confusing but I think its the second one

Step-by-step explanation:

Mandy bought a sweater that cost d dollars. She paid the clerk $40.00. Which expression shows her purchase?

Please put the expression in the right order

Answers

Answer:

$40.00 - d

thats the expression

Using the word problem below, WRITE AN EQUATION to model the situation. Do NOT solve.

A plumber charges a $40 service fee to come to your house. He also charges $50 for each hour that he works. The plumber charges you a total of $190. Use h for the number of hours.

Answers

Answer:y=50h+40

Step-by-step explanation:

Answer:

50*h+40 = 190

Step-by-step explanation:

50*h+40 = 190 where

50h will give you how much you pay for the hours of work

40 is the flat fee that you add up to the total

Solve each problem using a formula for perimeter or area
ill give brainliest!!!!!

Answers

12. S=p/5
13. A=wh
14. P=a+b+c
15. A=bh/2
16. A= p-b-c

Answer:

12. S=p/5

13. A=wh

14. P=a+b+c

15. A=bh/2

16. A= p-b-c

Step-by-step explanation:

If your input is 15 for the rule, "divide by 5 then multiply by 2", what would be your output?

A) 12
B) 6
C) 22
D) 1.5

Answers

Answer:

The answer is 6.

Step-by-step explanation:

15 divided by 5 is 3 times 2 is 6.

Answer:

B) 6

Step-by-step explanation:

15 divided by 5 = 3

then 3 times 2 = 6

A navy submarine descended at a rate of 4 feet per second. a. Write the descent rate as an integer. b. Write an expression to find the submarine's elevation after 5 minutes.

Answers

Answer:

1200

Step-by-step explanation:

Since the value they are asking for is in minutes, we need to convert seconds to minutes. We can do that by multiplying 4 and 60, because there are 60 seconds in a minute, and we need to find the value of one minute.  Also because the value they gave is 4. When we do this, we get 240. To get the final answer, we need to multiply 240 and 5, because 240 is the descending rate per minute, and they are asking for 5 minutes. When we do this, we get 1200.

(I might get this wrong, so like yeah.)

A food company produced 65 pounds of a new cereal and was going to package it in 4-ounce boces. The cardboard company is offering a special price on 5-ounce boxes. Will the food company have more or fewer promotional boxes if they decide to go with the 5-ounce boxes instead of the 4-ounce boxes? Select from the drop down menu the responses that make the statement true.

Answers

Answer:

Fewer because when there is boxes with larger quantities of cereal, they will need less boxes because of the box to cereal ratio. I hope this helps!

Step-by-step explanation:

On a local sports team, 20% of 50 players are left-handed. How many left-handed players are on the team?

Answers

Answer:

Step-by-step explanation:

50*20%=10

10 players are left-handed.

Answer:

20% of 50 is 10

Step-by-step explanation:

10 + (8 - 4 to the second power) divided by 2. Will you please help

Answers

Answer:

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Step-by-step explanation:

simple mental math hope this helps

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

Help mehhh pls!!!Pls Pls!?

Answers

I’m gonna guess 2, since 3 can go into both of them you can divide 6 by 3. So 2 feet
I think the answer is 2.

[tex]x-17=-6[/tex] 8 the grade mathematics

Answers

Answer: 11

you want to add 17 to -6 and then x will = 11

Hope that had helped

So X=11 your answer would be 11 because if you Move constant to the right-hand side and change its sign it would be X=-6+17 do you calculate the sum and I’ll give you 11

What is the simplified value of the expression below?
12.4x(-6.3)
A. -78.12
B. -1.97
C. 1.97
D. 78.12
PLEASE HURRY!!!!!!!!! God bless all! :) :)

Answers

D is the correct answer -78.12

PLEASE HELP
Wants the equation.

Answers

Answer:

Step-by-step explanation:

If I'm looking at this correctly, it's y= -2x-3

y= -2x-3.

i hope this helps, just got into it in school

Compare the fractions in each pair. Select the correct sign.

=
>

Answers

Answer:

as far as i know it is >

Step-by-step explanation:

Answer:

It’s >

Step-by-step explanation:

HELPPPPPPPPPPP MEEEEEEEEEEEE


Can you answer this

-What practical effect does Discovery impose on the Right of Occupancy?


copy and paste this into a new tab its the notes


https://docs.

google.

com/doc

ument/d/1

-p4VbQhpnE

N2HFI0Igrqwb

zVlsf3s4HfZlT_tV

nh_og/edit

Answers

what the answerStep-by-step explanation:

Round to the nearest Tenth.

Answers

26.04 I think I am not really sure what the question is asking

(12 points)

Explain how you will solve the pair of equations below by substitution

Show all the steps and write the solution in (x, y) form.


y = x + 4
y = −2x − 2


pls help
; - ;

Answers

Answer:

(-4,6)

Step-by-step explanation

y = x + 4= −2x − 2

0=x+4

-4=x

y=-2(-4)-2

y=8-2

y=6

(- 4,6) is the answer

i have no idea what the answer is please help

Answers

Answer:

3f

Step-by-step explanation:

Move 3 to the left of f, or just 3. (Since there isn't a 3f, do 3)

Answer: B. 8

Hope this helps

Please help due very soon: Draw the dialation of ABCD using center A and scale factor 1/2. Label the dialation EFGH.

Answers

Answer:

mlmklnoin

Step-by-step explanation:

A muffin recipe calls for 4 cups of sugar and yields 36 muffins. If China only wants to make 24 muffins, how much sugar will she need?

Answers

Answer:

6

Step-by-step explanation:

I might not be right but I think it's 6 because

24÷4=6

i think its 2 2/3 give me brainliest if correct please!!

{(12,6), (8,4) , (14,7), (-6, -3)} Identify the constant and equation of the ordered pair

Answers

Answer:

divided or multiplied by half

Step-by-step explanation:

I know this is the answer or at least you can figure out the answer by reading this

What is the equation of the line that passes through (0,5) and has a slope of 2? (y=mx+b no spaces)

Answers

Answer:

y=2x+5

Step-by-step explanation:

Answer:.

Step-by-step explanation:

Tamar has 24 pencils. 4/6 of the pencils need to be sharpened. How many pencils need to be sharpened?

Answers

Answer:

16 pencils need to be sharpened

Step-by-step explanation:

6 divided by 24 = 4 x 6 = 24 switch the 6 with a 4 and its 4 x 4= 16

The answer to this is 16

Write the slope intercept form of the equation of each line.

Answers

Answer:

y=-3/2x+4y=-3/2y=3x+2y=3/2+3

Step-by-step explanation:

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