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Aloiza [94]
3 years ago
13

I don't know what to do on this problem. Does someone have the answer?

Mathematics
1 answer:
Anarel [89]3 years ago
8 0

Answer:

Hi, hows life going?

Step-by-step explanation:

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The value of y varies directly with x. When x = 5, y = 7.5. What is the value of y when x = 15?
aliina [53]

Answer:

22.5

Step-by-step explanation:

SINCE Y VARIES DIRECTLY WITH X, WE USE THE FORMULA

y=kx; k representing the variable change, y= 7.5, x=5

> y=kx

>7.5= k(5) > 7.5= 5k

>k= 7.5/5    (divide to get the k)

k= 1.5

NOW REPLACE THE NEW VALUES OF X AND K AS THE VARIABLE CHANGE, TO FIND THE VALUE OF Y

>y=kx       ; k=1.5 and x=15    y=?

>y= (1.5)(15)

>y=22.5

the value of y is 22.5 when x is 15

5 0
3 years ago
Ted has a shelf that is 75/4 inches wide. How many books can Ted arrange on the shelf if each book is 5/4 inches thick?
Paladinen [302]
(75/4) / (5/4) = 
75/4 * 4/5 = 
300/20 =
15 books

6 0
3 years ago
What is the area of base for 7mm height and 7mm radius cylinder?​
sveta [45]

Answer:

153.94 mm^2

Step-by-step explanation:

area of base = area of a circle = Pi * radius squared

radius squared = 49

area of base =  Pi * 49

area of base =  153.94

3 0
2 years ago
3-2(3x+1)=19 <br>How would I solve this equation?​
sasho [114]

Step-by-step explanation:

3-2(3x+1)=19

3 - 6x - 2 = 19 \\ 1 - 6x = 19 \\  - 6x = 19 - 1 \\  - 6x = 18 \\ x =  - 3

5 0
3 years ago
Write a question about a situation that has 24-x for the answer
NARA [144]

Answer:

A bottle holds 24 ounces of water. It has x ounces of water in it.

What does 24 - x represent in this situation?

4 0
3 years ago
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