Jointly and cube power
If y varies jointly as x and the cube of z and y=16 when x=4 and z=2, find an equation representing this relationship.
a. y=xz
b. y = 2xz³
c.y = 2kx/z³
d.y = xz³/2
a. y=xz
b. y = 2xz³
c.y = 2kx/z³
d.y = xz³/2
Correct answer:
You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- arithmetic
- third power
- basic functions
- direct proportionality
- functions
Units of physical quantities:
Grade of the word problem:
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