Acar traveled at an average rate of 51 miles per hour on one highway. it then traveled at an average rate of 71 miles per hour on a second highway. if the car traveled a total of 508 miles in 8 hours, how many miles were driven on the first highway?

d1 = 51(t)

d2 = 71(8 - t)

d1 + d2 = 508

and now you just have to solve for t.

answer:

x = 29

step-by-step explanation:

the sum of the 3 angles in a triangle = 180°

sum the 3 angles and equate to 180

3(x + 2) + 52 + 35 = 180

3x + 6 + 52 + 35 = 180

3x + 93 = 180 ( subtract 93 from both sides )

3x = 87 ( divide both sides by 3 )

x = 29

answer:

since 2/3 of all the students study a language and 2/5 of those study french. 2/3 x 2/5 or 4/15 of the entire student body study french.

step-by-step explanation: