Answer:$20
Step-by-step explanation:
If Carlos had $20
Ben would have $60
And Ava would have $40
A) .05n + .10d + .25 q = 10.30
B) d +2 = q
C) n = 3q
Substituting equations B and C into A
A) .05*3q + .10(q-2) + .25 q = 10.30
A) .15q + .1q -.2 + .25q = 10.30
A) .50q = 10.50
21 quarters
C) n = 3q
C) n = 3*21
63 nickels
B) d +2 = q
d + 2 = 21
19 dimes
Answer:
infinite number of solutions
Step-by-step explanation:
x+y=1
3y=-3x+3 ⇒ y=-x+1 ⇒ y+x=1
both equations are the same, so they have infinite number of solutions
16+(-9)
-9+16
Addition equations that are equivalent
Answer:
Step-by-step explanation:
Let the cost of each shirt be x.
Would assume each shirt was discounted by 3.66
Amount to be paid for each : x - 3.66
Total = 3*(x - 3.66)
3*(x - 3.66) = 62.31
x - 3.66 = 62.31/3
x - 3.66 = 20.77
x = 20.77 + 3.66
x = 24.43
Each shirt cost $24.43 before the discount.
