A. $90
150 x .40= 60
150-60=90
Part A:5=2x^2-x^2+13
5=x^2+13
0=x^2+13-5
0=x^2+8
Part B:5=2x^3-x^3+13
5=x^3+13
0=x^3+13-5
0=x^3+8
Answer:
Circumference of the circle is 
Step-by-step explanation:
we have to find the circumference of the given circle.
Given:
Diameter=42 m

Circumference of a circle= 

So, the circumference of the circle is 
C, because they are all below 90, which is a right angle, and acute angle means less than 90 degree angle, and above 90 degree angle is an obtuse angle.
This is my knowledge, so I might be wrong, but, I am 90% sure I'm right.
Glad I could help, and good luck :)
Answer:
Step-by-step explanation:

We have to find the factors of 120 that can either add up to or have a difference of 2.
The factors of 120 are:

The difference of 10 and 12 is 2. In the equation, since the 2 is negative, the larger number must be subtracted, so the factorized form is:
