Answer:
B. 13
Step-by-step explanation:
Solve this by setting up system of equations:
0.25x + 0.10y = 3.95
x + y = 20
x equals the number of quarters and y equals the number of dimes. 0.25 is the value of a quarter and 0.10 is the value of a dime.
1. Multiply one equation to have the same coefficient as the other
0.10 · (x + y = 20) = 0.10x + 0.10y = 2
2. Subtract to find the value of one variable
0.25x + 0.10y = 3.95
<u>- 0.10x + 0.10y = 2</u>
0.15x = 1.95
3. Solve for x by dividing both sides by 0.15
x = 13
we have

<u>Find the greatest common factor GCF</u>
we know that

so
The GCF is equal to 
therefore

<u>the answer is</u>
The number is 
The answer is A, B, and C
Answer: -8, -7, -6, -5, -4
Step-by-step explanation:
Answer:
Option D. x = 4
Step-by-step explanation:
we have


we know that
The solution of the system
f(x)=g(x)
is the x-coordinate of the intersection point both graphs
using a graphing tool
The intersection point is (4,2)
see the attached figure
therefore
The solution is x=4