What does 5 1/4 - (-2 1/2) equal
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Answer:
<em>r=6</em>
Step-by-step explanation:
<u>Proportions </u>
We know M is directly proportional to
This can be written as
Where k is the constant of proportionality which will be determined knowing that when r = 4, M= 160. Substituting in the equation above:
Solving for k:
The equation is:
Now find r when M=540:
Dividing by 2.5:
Taking cube roots:
r=6