She can cut 4 pieces from the ribbon.
Answer:
The attached file contains the solution to the question
Answer:
B
Step-by-step explanation:
Answer:
C- -15
Step-by-step explanation:
f(-5) = f(x)
the value of x = -5
Therefore
f(-5) = -15
Answer:
It'll take 7 hours for the car B to cath up to A
Step-by-step explanation:
In order to solve this problem we can write the equation from the distance of each car. Assuming that t = 0 happens when the second car leaves Toronto. When the second car leaves Toronto, the first one is on the road for two hours already, thefeore it travelled a total of:
distance = speed*time = 70*2 = 140
We have:
Car A:
x(t) = 70*t + 140
Car B:
x(t) = 90*t
We now need to find the value of "t" that makes x(t) the same for both cars:
90*t = 70*t + 140
20*t = 140
t = 140 / 20 = 7 h
