Answer:A,C
Step-by-step explanation:
Answer:
-x2+3x-2 so I'm thinking A)
Step-by-step explanation:
Answer:
Quarters = 67
Nickel = 75
Step-by-step explanation:
Using simultaneous equations.
Let x represent the number of quarters and y the number of nickel.
1 quarter = $0.25
1 nickel = $0.05
Given;
Total number of coin = 142
So,
x + y = 142 ....1
Total value = $20.50
0.25x + 0.05y = 20.50 ......2
Divide equation 2 by 0.25;
x + 0.20y = 82 .....3
Subtract equation 3 from 1
y - 0.20y = 142-82
0.80y = 60
y = 60/0.80
y = 75
from equation 1
x+y = 142
x = 142-y = 142-75
x = 67
Number of each coin.
Quarters = 67
Nickel = 75
The answer is D.
I hope this helps.
Answer:
B) b-7/b-7=b-1
Step-by-step explanation:
the same number as both the numerator and denominator is equal to 1
Sorry if this doesn't really help I am bad at explaining...
