Gas mileage depends on part on the speed of the car. The gas mileage of a subcompact car is given by:m(x)=−0.04x2+3.6x−49milespergall onwhere 20≤x≤70 miles per houra. What is the miles per gallonfrom a speed of 65 mph?(3)b. Does the above function have a maximum or minimum? (2)How do you know?(1)c, What is the speed the car must go to Minimize/Maximizethe miles per gallon?

a) 15/7

step-by-step explanation:

at first, in 1635, the evening meetings had been just for women . .

what relationship between ideas is shown in the text above?

question 1 options:

location of events

similarity of events

timing of events

examples of an idea

step-by-step explanation:

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4