<span> (3a - 4)</span>²
= (3a)² - 2*3a*4 + 4²
= 9a² - 24a + 16
She is wrong because she did the square root of 25 multiplied by 2, she should have just done the square root of 50.
For the second part the square root of 50 is 7.07 which rounding would equal 7.1.
Hope this helps.(ノ◕ヮ◕)ノ*:・゚✧
11/12 hours left. 1 2/3 - 3/4 = 11/12. First, find the common denominator (12) . The problem is now 1 8/12 - 9/12. Use the 1 in (1 8/12) to borrow. Multiply the denominator by 1 (12) and add that to the numerator. The question is now 20/12 - 9/12. I assume that you can finish it off from there.
Step-by-step explanation:
the slope is 5 I think it is 5