Answer:
I think 48, since it's an equilateral triangle.
Step-by-step explanation:
8^2 + 12 - 2(8)
64 + 12 - 16
76 - 16
60
so your answer would be 60
Solution:
Here we have 2 system:
1. x + y = 42
2. 13x + 18y = 666
From equation 1.:
3. y = 42 - x
Substitute equation 3 into equation 2.:
13x + 18(42 - x) = 666
-5x + 756 = 666
5x = 90
x = 18
Since we got the value of x, then we will find the value of y. Substitute x into Equation 3:
y = 42 - 18 = 24
0.25Q + .01P = 8.58
P=8Q
0.25Q + .01(8Q) = 8.58
0.25Q + .08Q = 8.58
0.33Q=8.58
Q=26
P=8(26)=208
26 quarters and 208 pennies.
0.25(26) + .01(208) = 6.5 + 2.08 =8.58