Answer:
25%.
Step-by-step explanation:
We are going to do a rule of three:


x= 75%.
Then, the percent decrease was 25%.
Answer:
5 mph north
Step-by-step explanation:
The relative velocity of the truck with respect to the car is ...
relative velocity = truck velocity - car velocity
relative velocity = 42 mph north - 37 mph north
relative velocity = 5 mph north
Answer:
The nonpermissible replacement of the variable n is -4
Step-by-step explanation:
The nonpermissible replacement of the variable in a certain expression is the value of the variable that will make the denominator of the expression zero.
The expression
has the denominator 
This denominator cannot be equal zero, thus,
.
You have given no choices, but here are some.
6/10
9/15
12/20
15/25