4 years ago

Which expression is equivalent to r^m ÷ r^n? r^m − ^n r^m ^n r^m * ^n r^m ÷ ^n

Mathematics

1 answer:

Ksenya-84 [330]4 years ago

6 0

$r^{m} \div r^{n} = r^{m-n}$

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Find the length of LM if L is the midpoint of NM. NL = 3x + 1, LM = 8x - 24.

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Answer:

LM = 16

Step-by-step explanation:

From the question given:

L is the midpoint of NM

NL = 3x + 1

LM = 8x - 24

LM =?

Next, we shall determine the value of x.

This can be obtained as follow:

Since L is the midpoint of NM, it means that NL and LM are equal i.e

NL = LM

Thus, we can obtain the value of x as follow:

NL = 3x + 1

LM = 8x - 24

NL = LM

3x + 1 = 8x - 24

Collect like terms

3x - 8x = - 24 - 1

-5x = - 25

Divide both side by - 5

x = -25/-5

x = 5

Finally, we shall determine the length of LM as follow:

LM = 8x - 24

x = 5

LM = 8(5) - 24

LM = 40 - 24

LM = 16

Therefore, the length of LM is 16

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