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Nikolay [14]
3 years ago
14

Suppose you're given the formula P = 9m – 3n. If you know that n is 1⁄3 of m, how could you rewrite this formula?

Mathematics
2 answers:
ratelena [41]3 years ago
8 0

Answer:

Option C - P=8m

Step-by-step explanation:

Given : Formula P=9m-3n If you know that n is \frac{1}{3} of m.

To find : How could you rewrite this formula?

Solution :  

Step 1 - Write the formula,

P=9m-3n

Step 2 - Substitute, n=\frac{1}{3}m

P=9m-3(\frac{1}{3}m)

Step 3 - Solve,

P=9m-m

P=8m

Therefore, The formula can be re-write as P=8m

So, Option C is correct.

algol133 years ago
4 0

Answer:

This problem is very easy. Start with the formula given, i.e.,  n=3m-2l. Now, use the fact that you are told that l = m+2 and rewrite your original formula as

n = 3m -2(m+2).

Simple algebraic manipulations give  n = 3m-2m - 4 = m-4.  So the answer is (A).

Step-by-step explanation:

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