Answer:
The child has 6 dimes and 5 quarters.
Step-by-step explanation:
Let q and d represent the number of quarters and of dimes respectively.
Then q + d = 11 (Equation A), and ($0.25/quarter)q + ($0.10/dime)d = $1.85 (Equation B).
Multiply the 2nd equation by 100 to remove the decimal fractions:
25q + 10d = 185 (Equation C)
Now multiply the 1st equation by -10 to obtain -10q - 10d = -110 (Equation D), and combine this result with Equation C:
-10q - 10d = -110
25q + 10d = 185
--------------------------
15q = 75, and so q = 75/15 = 5.
According to Equation A, q + d = 11. Replacing q with 5, we get:
5 + d = 11, and so d = 6.
The child has 6 dimes and 5 quarters.
Answer:
$66.24
Step-by-step explanation:
TIP:
55.20 x 0.15 = 8.28
TAX:
55.20 x 0.05 = 2.76
Answer:
55.20 + 8.28 + 2.76 = 66.24
(Also always tip your server 20% unless they were bad)
Answer:
y^2 - x^2 = 11
Step-by-step explanation:
y^2 - x^2 = ?
Substitute.
y = 6
x = 5
Becomes:
6^2 - 5^2 = ?
Solve.
6^2 = 6 x 6
6 x 6 = 36
5^2 = 5 x 5
5 x 5 = 25
36 - 25 = 11
Answer:
length = 16 feet
width = 12 feet
Step-by-step explanation:
divide the length and width by 2 so you get 3 and 4. then you proceed to Multiply both by 4 and you get 12 and 16
6÷2 = 3
8÷2 = 4
3x4= 12
4x4 = 16
Answer:
$25
Step-by-step explanation: