Answer:
8:3
Step-by-step explanation:
64:24 =32:12 = 16:6= 8:3
Answer:
8 ft
Step-by-step explanation:
Add back those 5 square feet and you find the area of the square to be 64 square feet. Its side length is the square root of that: 8 ft.
Let the middle child be x
youngest child = x - 1
Oldest child = x + 1
(x - 1)^2 = 8(x + 1) + 4
x^2 - 2x + 1 = 8x + 8 + 4
x^2 - 10x - 11 = 0
(x - 11) * (x + 1) = 0
X = - 1 makes no sense. How can a middle child be - 1 years old?
x = 11
The youngest child is 10
The middle child is 11
The oldest child is 12
Check
=====
10^2 = 100
(8*12) + 4
96 + 4 = 100 So the results have been checked.
Answer:
60(.3)= 18
Step-by-step explanation:
Discounted at 15% off....means the kid actually paid 85%
0.85(18) = 15.30
and then there is the 6% sales tax...
15.30 * 1.06 = 16.218 rounds to $ 16.22 <== what she pays
