Answer:
54, 52, 26, 24, 22, -6, -4
Step-by-step explanation:
Answer:
like -1/4
Step-by-step explanation:
Answer:
49,7²
Step-by-step explanation:
7^9*7^-6*7^-8*7^7
7^9-6-8+7
7^16-14
7^2
49
Define your variables:
Q: number of quarters
D: number of dimes
Next, create your equations
Q = 2D-4
25Q+10D=200
Because one variable (Q) is already written in terms of the other variable, D, you can already start solving with substitution.
25(2D-4)+10D=200
50D-100+10D=200
60D=300
D=5
Substitute D back into the other equation to find Q.
Q=2D-4
Q=2(5)-4
Q=6
Substitute D and Q into the second equation to check.
25Q+10D=200
25(6)+10(5)=200
150+50=200
This works, so the answer is right! Bill has 6 quarters and 5 dimes.
