Answer:
Step-by-step explanation:
d = r * t
Let the time at 59 miles / hour be t
59*t + 57* (4.5 - t) = 259.5 Remove the brackets
59*t + 256.5 - 57*t = 259.5 Combine the left
2t + 256.5 = 259.5 Subtract 228 from both sides
2t = 259.5 - 256.5 Combine
2t = 3 Divide by 2
t = 1.5
So he spent 1.5 hours going at 59 miles per hour
He spent 4.5 - 1.5 = 3 hours going 57 miles per hour.
17.5
Divide 7 by 8 to get .875 and multiply that by 20 to get your answer.
Answer:
400 miles.
Step-by-step explanation:
Gallons used = 16 - 4 = 12 gallons.
Miles driven = 12 / 0.03
= 1200/3
= 400 miles.
Answer: I believe that the answer would be "In an isosceles triangle, two of the angles are congruent."
Step-by-step explanation:
There are 45 girls in Jonathan's class.