Solving a Real-World Problem
The quadratic function y = -x2 + 10x - 8 models the height of a trestle on a bridge. The x-axis represents ground level.

To find where the section of the bridge meets ground level, solve 0 = -x2 + 10x - 8.

Where does this section of the bridge meet ground level?

Choose an equation that would be used to solve 0 = -x2 + 10x – 8

(x + 25)2 = –8
(x – 5)2 = 17

(x – 10)2 = 25
Solve the equation to find where the trestle meets ground level. Enter your answers from least to greatest and round to the nearest tenth.

The trestle meets the ground at
units and
units.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

the answer is c)8

step-by-step explanaction:

hi! i think the answer is 1/2 : )