Someone help pleasee. Andre was trying to write 7^4/7^-3 with a single exponent and worte 7^4/7^-3 = 7^4 = 7^1 explain to Andre what his mistake was and what the answer should be.

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0

it's possible to build a triangle with side lengths of 3, 3, and 9.- true ( b.)

answer is  

minor arc – sw

major arc – stu

semicircle – wst

i got it down chief.