3 years ago

What is the simplified form of –9m–2n5 × 2m–3n–6?

Mathematics

1 answer:

maxonik [38]3 years ago

5 0

Your answer would be -18m-6n-30

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The sum of two-thirds of a number and twenty

Ede4ka [16]

Answer:

2/3n + 20

Step-by-step explanation:

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2 years ago

What is 29 is 6 more than k

andreev551 [17]

Answer:

29 = 6 + k

k = 23

Step-by-step explanation:

The equation for that would be:

29 = 6 + k

and the answer would be:

29 = 6 + k

-6 -6

23 = k

k = 23

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2 years ago

123.456 RONDED TO THE NEAREST HUNDREDTH.

anzhelika [568]

123.456 RONDED TO THE NEAREST HUNDREDTH.

Answer:

123.46

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2 years ago

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Solve for m<br> 2/3=m/42

almond37 [142]

$\frac{2}{3}=\frac{m}{42}\ \ \ \ | multiply\ by\ 42\\\\ \frac{2*42}{3}=m\\\\
28=m\\\\Solution\ is\ m=28.$

4 0

2 years ago

Prove algebraically that (m + 2)2 – m 2 – 12 is always a multiple of 4

Julli [10]

Answer:

$(m + 2)^{2} - m^{2} - 12 = 4(m - 2)$

Step-by-step explanation:

Step 1:

Write the expression

$(m+2)^{2} - m^{2} - 12$

Step 2: Expand $(m + 2)^{2}$

$(m+2)^{2} - m^{2} - 12\\(m+2)(m+2) - m^{2} - 12\\m^{2} + 2m + 2m + 4 - m^{2} - 12$

Step 3: Collect similar terms

$m^{2} - m^{2} + 4m + 4 - 12\\4m - 8$

Step 4: Factor 4 out of the expression to prove that the expression is a multiple of 4.

$Therefore\\4m - 8 = 4(m - 2)\\Hence,\\(m+2)^{2} - m^{2} - 12 is a multiply of 4 because the expression is equal to 4(m-2)$

3 0

2 years ago