Gemma recently rode her bicycle to visit her friend who lives 6 miles away. On her way there, her average speed was 16 miles per
hour faster than on her way home. If Gemma spent a total of 1 hour bicycle, find the two rates.
1 answer:
first speed --- x mph
return speed -- x+16 mph
6/x + 6/(x+16) = 1
times each term by x(x+16)
6(x+16) + 6x = x(x+16)
x^2 + 4x - 96 = 0
(x-8)(x+12) = 0
x = 8 or x is a negative
her first speed was 8 mph
her return speed was 24 mph
check:
6/8 + 6/24 = 1 , that's good!
You might be interested in
Answer
second one
Step-by-step explanation:
Answer:
34
Step-by-step explanation:
i think
Answer
= 43098.92
Step-by-step explanation:
Good luck
i solved and got that
Answer:
Step-by-step explanation:
4x10=40
7x10=70
6x10=60
10x10=100
8x10=80
4x14=56
5x16=80
40+70+60+100+80+56+80= $486
Answer:
what
j
Step-by-step explanation: