Answer: True
Step-by-step explanation:
I already took this part of the quiz and this was the right answer
“The breaking distance is directly proportional to the square of its speed”
Using your variables, this means: d = k•b^2
k here is some unknown (and for this question irrelevant) number.
Now if b (the speed) is increased by 200%, then your new speed is b+2b = 3b. The 2b is the 200% increase.
Throw 3b into the first equation we have the new d as:
d = k • (3b)^2
Simplifying this, you have d = k•9b or d=9kb
This means the new braking distance is 9 times the original braking distance.
Answer:
4 square units.
Step-by-step explanation:
you are right!
Answer:
133.33%
Step-by-step explanation:
120= 120/90
the word OF = multiplication
120/90 x 100/100=133.33/100
133.33/100=133.33%
-2y>12x-42
y<21-6x
so a is true
