Answer:
- 39 quarters and 41 nickels
Step-by-step explanation:
Let the number of quarters be x and nickels be y.
<u>Given:</u>
- Quarter is 25 cents
- Nickel is 5 cents
- Number of coins is 80
- Total amount is $11.80 = 1180 cents
<u>We have equations:</u>
- x + y = 80
- 25x + 5y = 1180
<u>Solve the system by elimination, subtract 5 times the first equation from the second one:</u>
- 25x + 5y - 5x - 5y = 1180 - 80*5
- 20x = 780
- x = 780/20
- x = 39
<u>Find the value of y:</u>
- 39 + y = 80
- y = 80 - 39y = 41
<u>Verify:</u>
- 25*39 + 5*41 = 975 + 205 = 1180
Answer:
C≈61.89
C=3830.37
Step-by-step explanation:
A≈615.75
All you have to do for this is follow the midpoint formula.
Let me know if the picture is unclear and I'll type it out for you.
Answer:
the answer is D because "difference" is a key word for subtraction
Step-by-step explanation:
Slope = (9-3)/(5-2) = 6/3 = 2
answer
<span>A) 2 </span>
