Answer:
175 dimes and 75 quarters
Step-by-step explanation:
Make a system of equations, where d is the number of dimes and q is the number of quarters:
d + q = 250
0.1d + 0.25q = 36.25
Solve by elimination by multiplying the top equation by -0.1:
-0.1d - 0.1q = -25
0.1d + 0.25q = 36.25
0.15q = 11.25
q = 75
Then, plug in 75 as q into one of the equations to solve for d:
d + q = 250
d + 75 = 250
d = 175
So, there are 175 dimes and 75 quarters
Answer:
B
Step-by-step explanation:
This is how I am confirming the answer:
14/125 = 0.112
125(0.112) = 14
Answer:
- -1
- 0
Step-by-step explanation:
1. cos(π) = -1
2. sin(π) = 0
_____
It is useful to memorize the table below.
(x+2)^2 over x+2
x^2+4 \x+2
x+2
(15/r) - 1...when r = 5
(15/5) - 1 =
3 - 1 =
2 <==