2(3)2 - 8 ÷ 2 + 6
(6) 2 - 8 ÷ 2 + 6
12 - 8 ÷ 2 + 6
12 - 4 + 6
8 + 6
14
an equation is undefined, when its denominator is 0, or turns to 0, because we can't divide anything by 0.
so let's simply set the denominator of this one = 0.
![\bf x^2-7x+10=0\implies (x-2)(x-5)=0\implies x= \begin{cases} 2\\ 5 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{(2)^2-9}{(2)^2-7(2)+10}\implies \cfrac{-5}{-10+10}\implies \cfrac{-5}{0}\leftarrow und efined \\\\\\ \cfrac{(5)^2-9}{(5)^2-7(5)+10}\implies \cfrac{16}{-10+10}\implies \cfrac{16}{0}\leftarrow und efined](https://tex.z-dn.net/?f=%5Cbf%20x%5E2-7x%2B10%3D0%5Cimplies%20%28x-2%29%28x-5%29%3D0%5Cimplies%20x%3D%20%5Cbegin%7Bcases%7D%202%5C%5C%205%20%5Cend%7Bcases%7D%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20%5Ccfrac%7B%282%29%5E2-9%7D%7B%282%29%5E2-7%282%29%2B10%7D%5Cimplies%20%5Ccfrac%7B-5%7D%7B-10%2B10%7D%5Cimplies%20%5Ccfrac%7B-5%7D%7B0%7D%5Cleftarrow%20und%20efined%20%5C%5C%5C%5C%5C%5C%20%5Ccfrac%7B%285%29%5E2-9%7D%7B%285%29%5E2-7%285%29%2B10%7D%5Cimplies%20%5Ccfrac%7B16%7D%7B-10%2B10%7D%5Cimplies%20%5Ccfrac%7B16%7D%7B0%7D%5Cleftarrow%20und%20efined)
<u>Answer-</u>
<em>Noah spent </em><em>19 hours 12 minutes</em><em> working on the transmission.</em>
<u>Solution-</u>
Noah spent 24 hours working on his car.
He spent
on his time working on his transmission and rest on other .
So the total time spent by Noah working on the transmission is,

Therefore, Noah spent 19 hours 12 minutes working on the transmission.
The answer is C. <span>7 units. just turn it to the position of 90 degrees.</span>