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3 years ago

4/7m=18-2/7m does anyone know the answer to this with work shown?

Mathematics

1 answer:

Gala2k [10]3 years ago

6 0

Answer: 21

Step-by-step explanation:

=18−

2 Simplify

m to

−

=18−

3 Multiply both sides by

−

4m=126−2m

4 Add

2m to both sides.

4m+2m=126

5 Simplify

4m+2m to

6m.

6m=126

6 Divide both sides by

126

7 Simplify

126

21.

m=21

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To find the measure of angle R:

Law of cosine formula for ΔQRP:

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Substitute the given values in the above formula.

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Switch the given equation.

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