If I fill my truck up with 20 gallons of gas and I noticed that it cost me $39.48 how much does it cost for one gallon of gas

$1.97 per gallon

Step-by-step explanation:

39.48/20 = 1.974

probability for j is 1/4

while

a is 1/6

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