Rewrite 5x(12+7) using distributive property

Here is the Distributive Property made simple.

When you have a number outside a number or numbers inside parentheses, you multiply whatever is inside the parentheses by the number outside the parentheses.

3( 7 + 5 +4)  becomes 3 x7 + 3x5 +3 x 4

0r 21 +15 +12

You multiplied each of the numbers by the 3

If there is a variable, that is distributed also

3y(4 + 6)   becomes     12 y +18y

the correct answer is c

1. 16.64

a^2+b^2=c^2

pr^2=pq^2+qr^2

pr^2=14^2+ 9^2

pr^2=196+81

pr= sqr root of 277

16.64

2. 11.31

c^2-a^2=b^2

18^2- 14^2=b^2

b^2=324-196

b=sqr root of 126

b=11.31

hope it ! (btw im in connections academy to, good luck! )