The sum of 8 times a number and 7 is 4.
use the variable b for the unknown number.

Step-by-step explanation:

First your'e going to want to make an equation for this.

Sum (addition) of 8 times a number (they say to use b) and 7 is 4 (The answer)

The equation is going to look like this 8b + 7 = 4

now we can start to solve this.

Subtract 7 over and get: 8b = -3

Divide both sides by 8 and get b =

You can test this by putting it back into the equation 8(-3/8) = -3

-3+7 = 4

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation:

step-by-step explanation:

in which figure is point g a centroid