X + y = 16 (1)
x/y = 3 (2)
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x + y = 16
x = 16 - y
1. Substitute x into equation 2
16-y/y = 3
16 - y = 3y
16 = 4y
y = 4
2. Now substitute y into equation 1
x/y = 3
x/4 = 2
x = 12
Therefore, x = 12, y = 4
Answer:
90 cents
Step-by-step explanation:
23.40- 22.50= 0.90
All cone-shaped cups have the same height in 8 inches. They just differ in their diameters. To solve for the volume of the regular and jumbo sizes, let's use the formula for the volume of cone
V = (1/3)*pi*(r^2)*h
r is just the half of the diameter, h is the height which is equal to 8
Regular size:
V = (1/3)*pi*((4/2)^2)*8
V = 33.5 cube inches
Jumbo size:
V = (1/3)*pi*((8/2)^2)*8
V = 134.0 cube inches
Answer:
8100 Hours
Step-by-step explanation:
We all have heard of miles per hour, so just plug that formula into the question!
Ex. 18 miles PER HOUR x 450 MILES = 8100 hours
Hope this helps!