3. A piggy bank contains only nickels, dimes, and quarters. Given the following information, determine the equations that will help you to find how many of each type of coin are in the bank:
• The coins total $4.50
There are 32 coins in the bank
The number of nickels and dimes together is 8 more than the number of quarters
.
.
A. 0.08n +0.120 +0.26q = 4.50
n+d+q = 32
n+d=q+8
C. 0.05n+ 0.100 +0.25% = 4.50
n+d+q = 32
n+d=q +8
D. There is no way to create this system
B. 0.05n + 0.100 +0.257 = 4.50
n+d+q = 32
n+d=4-8

2

step-by-step explanation:

a. is correct

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

answer: 0.1,0.85

step-by-step explanation: