The table is an example of joint variation. what is the missing value if the length is 5 meters?

7

Step-by-step explanation:

Formula of joint variation :

To Calculate k

Width(x)= 7

Height(y) = 12

Volume(z) = 420

Substitute the values in the formula

Now , to find the missing height

Substitute width = x = 15

Height = ?

Volume = z = 525

Substitute the values in the formula :

So, the  missing value is 7 .

114 plus 113 times 2 and 114 times 3

we need to divide the number of toy dinosaurs, 156, by the number of brothers, 4:

in order to estimate, we can use compatible numbers:

156 ÷ 4

  ↓

160   ÷ 4 = 40        

the correct answer is a).