1,000 + 50 + 40 + 0.04 + 0.0002 is the number above in expanded notation.
Multiply by 4 to get to one minute —>28.
Multiply by 60 to get to one hour—> 1,680
Multiply by 5 to get to 5 hours—> 8,400
Answer:
4.1
Step-by-step explanation:
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
