Mathematics College

The value of y varies directly with x. If x = 4, then y= 10. What is the value of x when
y = 25
A 10
B. 2 1/5
C. 6
D. 15

Answers

Answer 1
4 10
— —
10 25

answer: 10

Related Questions

2) A farmhouse shelters 61 animals. Some are cows and some are ducks. Altogether there are
208 legs. How many of each animal are there?

Answers

Answer:
43 cows and 18 ducks

Explanation:
Let c represent the number of cows in the farmhouse.
Let d represent the number of ducks in the farmhouse.

We know that:
- there are a total of 61 animals in the farmhouse
- one cow has 4 legs
- one duck has 2 legs
- there are a total of 208 legs

Using the information above, we can create two equations:

c+d=61
4c+2d=208

1) multiply the first equation by 2
If we do this, both equations will have 2d and we can subtract them to solve for c.

c+d=61
2c+2d=122

2) Subtract the first equation from the second

4c+2d=208
2c+2d=122
2c=86
c=43

Therefore, the number of cows in the farmhouse is equal to 43.

2) plug 43 into the first equation to solve for d
We can plug 43 into either of the original questions to find the number of ducks, but in this case, it would be easier to solve for in the first equation.

c+d=61
43+d=61
Subtract both sides by 43
43+d-43=61-43
d=18

Therefore, the number of ducks in the farmhouse is equal to 18.

I hope this helps!

If Michael can read 400 pages in 8 hours, how many pages can he read in 1 hour?

Answers

Step-by-step explanation:

He will read 50 pages in an hour

Please help..............

Answers

Answer:

The first one.

Step-by-step explanation:

:)

Pls help me out I really need help

Answers

Answer: -0.8

Step-by-step explanation:

HURRY PLEASE HELP!!!!!!

the answer choices are
A. 55
B. 40
C. 60

Answers

Answer:

A. 55

Step-by-step explanation:

hope this helps have a good day :)

I need help with it problem

Answers

Answer:

I think 4y M 8x L 8x K 8y J??

Step-by-step explanation:

I'm not sure but I am going to learn this so I can become better at it.

I desperately need help​

Answers

Answ you need to find the slope using the coordinates. Then, you need to write the equation in Point-slope form and Slope-Intercept. (If ur teacher wants Standard Form do that too

Step-by-step explanation:

Find the value of x. Round to the nearest degree.
13.
22
14
Not drawn to scale
a. 47
b. 32
c. 40
d. 50

Answers

Answer:

32

Step-by-step explanation:

Victoria spent one half of her birthday money on clothes. She received another $25 a week later. How much money did she get for her birthday if she ended up with $70?

Answers

Answer:

$90

Step-by-step explanation:

If she ended up with 70 dollars then subtract 25 from 70 and you will get 45. then you double 45 which gives you 90 dollars

the length of a rectangle is six times its width. if the area of the rectangle is 294 cm^2, find its perimeter. ​

Answers

Answer:

98 inches

Step-by-step explanation:

6x^2=294

x^2=49

x=7

2*7+2*42=  14+84=98 inches

Determine the unknown side of the similar triangle.
A)
2
B)
3
4
D)
5

Answers

Answer : C) 4
Step by Step explanation:

Answer:

(C). 4

Step-by-step explanation:

Sides of the similar triangles are proportional.

if X ~ Y , then [tex]\frac{12}{6}[/tex] = [tex]\frac{8}{x}[/tex] ⇒ x = 4

A cube with a side of 1m was sawn into cubes with a side of 1 cm and then laid in a row (in a straight line). What was the length of this series?

Answers

Answer:

10 km

Step-by-step explanation:

volume of cube = s^3

1 m = 100 cm

volume = s^3 = (1 m)^3 = (100 cm)^3 = 1,000,000 cm^3

Since 1 m^3 = 1,000,000 cm^3, when you lay down the 1-cm cubes in a straight line with the edges touching, the line is 1,000,000 cm long.

1,000,000 cm = 10,000 m = 10 km


A car is going 50 miles per hour.

A rate that describes this would have units of?

А. miles and hours.

B. miles and cars.

C. hours only.

D. miles only.

Answers

miles and hours is the correct option.

NOT SURE BUT HOPE IT IS CORRECT AND HELPS YOU

Need this ASAP
What is the constant of proportionality in the equationy=2x

Answers

Answer:

2

Step-by-step explanation:

[tex]y = 2x \\ \\ \frac{y}{x} = 2 \\ equating \: it \: with \: \\ \frac{y}{x} = k \\ \\ k = 2 \\ \\ [/tex]

Hence, constant of proportionality = 2

Find vux
What is vux??????

Answers

Vux means line will cross the y axis . Horizontal lines have 0 slope. What does the y in hoy vux mean? It means the line will cross the y axis.

317
What is the answer to 317 x 54.

Answers

17.118

Step-by-step explanation:

hope it helps! :)

Find the smallest number which is exactly divisible
by 15 20 and 30
​

Answers

Answer:

60

Step-by-step explanation:

The smallest number that is divisible by 15, 20 , and 30, must have the needed factors of each of these numbers:

15 = 3 * 5

20 = 2 * 2 * 5

30 = 2 * 3 * 5

Then the minimum common factor must have the following factors to satisfy the divisibility of all of the numbers above:

2 * 2 * 3 * 5 = 60

find the third side in simplest radical form.

Answers

Answer:

C=12.8

On the caculator there are two buttons you need to press. 2nd and then x2. Once you press those add in 20.

You get 4.47 ROUND THAT to 4.5

12(2)+4.5(2)=C(2)

12×12=144 4.5×4.5=20.25

144+20.25=164.25

164.25=C(2)

On the caculator press 2nd and then x2

12.81=12.8

C=12.8

if l || m,find the value of x, (8x + 20) (11x-31)

Answers

Answer:

x=17

Step-by-step explanation:

8x+20=11x-31

We simplify the equation to the form, which is simple to understand  

8x+20=11x-31

We move all terms containing x to the left and all other terms to the right.  

+8x-11x=-31-20

We simplify left and right side of the equation.  

-3x=-51

We divide both sides of the equation by -3 to get x.  

x=17

Answer:

17

Step-by-step explanation:

8x + 20 = 11x - 31

-8. -8

20 = 3× - 31

+31. +31

51 = 3x

/3. /3

x = 17

Eric wants to attend a public four-year university. He estimates that the average cost of one year at this university is $19,500. He can save at most $325 a month. Without factoring in interest, grants, or scholarships, what is the minimum number of months he needs to save in order to be able to pay for one year of college?
60
62
65
67

Answers

325 * 60 = 19500 so 60 months

Answer:

A 60

Step-by-step explanation:

Evaluate 4p+q/p when p= -2 and q= -3

a) -11/2
b) 9/2
c) -9/2
d) 11/2​

Answers

Answer:

D

Step-by-step explanation:

Answer:

d. 11/2

Step-by-step explanation:

(4p + q)/p

(4(-2) + (-3))/(-2) = (-8-3)/(-2)

11/2

Which lines represents a proportional relationship? HELP PLEASE

Answers

Answer:

C. Y3

Step-by-step explanation:

It goes straight through the origin (0,0)

C because it only makes since he explained it pretty accurate

Consider the equation 3p - 7 + p = 13. What is the resulting equation after the first step in the solution?
Op-7 = 13-3p
O 2p-7 = 13
O 3p-7 = 13-
4p - 7 = 13

Answers

Answer:

4p - 7

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define

3p - 7 + p = 13

Step 2: Solve for p

Combine like terms:                    4p - 7 = 13Add 7 to both sides:                     4p = 20Divide 4 on both sides:                p = 5

1/4(x-2)+4=12 help please

Answers

Answer:

X = 34

Step-by-step explanation:

You start at (3,-3). You move down 2 units and up 6 units. Where do you end? On a coordinate plane

Answers

Answer:

(3 , 1)

Step-by-step explanation:

(3 , - 3)

(3 , - 3 - 2 + 6) = (3 , 1)

Determine the Measure of angle X

Answers

Answer:

[tex]x=325[/tex]°

Step-by-step explanation:

[tex]360-35=325[/tex]

The answer above mine is correct... ^^;

What slope would make the lines
parallel?
y = 4x + 2
y = [?]x-4
Enter the number that belongs in the green box.

Answers

Answer:

4

Step-by-step explanation:

Parallel lines have the same slope and since the slope of the first line is 4 the second lines slope is also 4

Answer:

Step-by-step explanation:

Slopes of parallel lines are the same.

m = 4

Find the slope of x=(5,6), y=(0,2)

Answers

Answer:

4/5

Step-by-step explanation:

the equation of slope is y1-y2/ x1-x2

you get 4/5

You move down 6 units. You end at (-5, -5). Where did you start?

Answers

Answer:

(-5, 1)

Step-by-step explanation:

(x, y)

x moves left/right

y moves up/down

x = -5

y = -5 + 6 = 1

(-5, 1)

Ann and Bob split some money in the ratio 4:2. Ann got £4 more than Bob. How much did Bob get?​

Answers

Answer:

$4

Step-by-step explanation:

A 4:2 ratio is the same as a 2:1 ratio, so Ann receives double what Bob gets.

If Ann gets 8 dollars and Bob gets 4, then Ann would have $4 more than Bob, and it would follow the appropriate ratio.

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