gas mileage actually varies slightly with the driving speed of a car​ (as well as with highway vs. city​ driving). suppose your car averages 37 miles per gallon on the highway if your average speed is 48 miles per​ hour, and it averages 26 miles per gallon on the highway if your average speed is 72 miles per hour

step- i d k and i d c : )

you: : 0

bye

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

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94