Michael smith and Kary B. Mullís
Answer: She has 76 dimes and 78 quarters.
Step-by-step explanation:
Given data:
Total = $27.20
Solution:
Q = d + 2
Each quarter is 25 cents, or 0.25 of a dollar = 0.25q
Each dime is 10 cents = 0.10d
0.25q+0.10d = $27.20
Where q = d-2
Substitute in this equation:
0.25(d+2)+0.10d = 27.20
0.25d + 0.5 + 0.10d = 27.20
0.35d = 26.7
Divide both sides by 0.35
d = 76
She has 76 dimes and 76 + 2 = 78 quarters.
Answer:
6x+4 ft
40 ft
Step-by-step explanation:
The perimeter of a rectangle is
P = 2(l+w)
= 2( x+5 + 2x-3)
Combine like terms
= 2(3x+2)
Distribute
=6x+4
Let x= 6
= 6*6+4
= 36+4
= 40
Answer:
28.2 ft²
Step-by-step explanation:
