Simplify the expression 8^2 +9(12÷3*2) - 7 explain each of your steps.

8^2+9(12/3*2)-7

 do parenthesis first ( from left to right)

8^2 +9(8)-7

 do the ^2 and the multiplication next

64 +72 -7

do addition then subtraction

136-7 = 129

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula