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vredina [299]
3 years ago
10

Nathaniel writes the general form of the equation gm = cm + rg for when the equation is solved for m. He uses the general form t

o solve the equation –3m = 4m – 15 for m. Which expression shows what Nathaniel will actually evaluate? 4 + 15 – 3 4 – 15 + 3 –15 –
Mathematics
2 answers:
madam [21]3 years ago
8 0

Answer:

The required expression is m=\frac{-15}{-3-4}.

Step-by-step explanation:

The general form of the equation is

gm=cm+rg             .... (1)

We need to solve this equation for m.

Subtract cm from both the sides.

gm-cm=rg

Taking out the common factor.

m(g-c)=rg

Divide both sides by (g-c).

\frac{m(g-c)}{g-c}=\frac{rg}{g-c}

m=\frac{rg}{g-c}               ..... (2)

The given equation is

-3m=4m-15            ..... (3)

From (1) and (3), we get

g=-3,c=4,rg=-15

Substitute g=-3, c=4, rg=-15 in equation (2).

m=\frac{-15}{-3-4}

Therefore the required expression is m=\frac{-15}{-3-4}.

denis23 [38]3 years ago
8 0

Answer:

C

Step-by-step explanation:

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