M is directly proportional to r³ when r=4, m=160.work out the value of r when m=20
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The expression equivalent to given expression is
<em><u>Solution:</u></em>
Given expression is:
We are asked to find the expression equivalent to given expression
Assume that denominator does not equal to zero
We can apply the exponent rule in given expression
Apply the above rule in given expression
Thus the equivalent expression is found