Answer:
the answer will be 7.50
Step-by-step explanation:
The equation would be a-44=64÷4
Sarah's age is 60
Answer:
x=12/5
Step-by-step explanation:
4x + 16 - x= 22 + 6
5x+16=28
5x=28-16
5x=12
x=12/5
The volume of the styrofoam collar is approximately 1,960.35 
Step-by-step explanation:
Step 1:
The given styrofoam collar is a hollow cylinder. A hollow cylinder consists of an outer radius and an inner radius.
This given hollow cylinder has an outer radius of 8 inches and an inner radius of 5 inches. The height of the cylinder is 16 inches.
To calculate the volume of a hollow cylinder we subtract the volume of a cylinder constructed with the inner radius from the volume of a cylinder with the outer radius.
Step 2:
The volume of a cylinder, 
For the outer cylinder,
inches and
inches.
The volume of the outer cylinder, 
For the inner cylinder,
inches and
inches.
The volume of the inner cylinder, 
Step 3:
The volume of the styrofoam collar 
The volume of the styrofoam collar 
Rounding this off, we get the volume of the styrofoam collar as 1,960.35 
Answer:
Let x be the number of tickets sold to adults and y the number sold to students:
x + y = 315. But we know that y was double x, then :
y = 2x
Plug the value of y (in the 1st equation) by 2x:
x+ 2x = 315
3x = 315
and x = 105 (which is the number of tickets sold to adults
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Step-by-step explanation: