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Ludmilka [50]
3 years ago
11

Solve. x^-9 y^3 / x^-7 y^8

Mathematics
1 answer:
aniked [119]3 years ago
3 0

\dfrac{x^{-9}y^3}{x^{-7}y^8}=x^{-9-(-7)}y^{3-8}=x^{-2}y^{-5}=\dfrac{1}{x^2y^5}\\\\Used:\\\\\dfrac{a^n}{a^m}=a^{n-m}\\\\a^{-n}=\dfrac{1}{a^n}

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What is the answer to the question?​
Anuta_ua [19.1K]

Answer:

Given : PQ = RQ

to find : angle B

  • PQ = RQ
  • Angle B = angle QRP ( angle opposite to equal side are equal). ...(1)
  • angle QRP + 140° = 180° ( linear pair)
  • angle QRP = 180° - 140°
  • angle QRP = 40°
  • from equation (1)
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4 0
3 years ago
Read 2 more answers
Use the grouping method to factor this polynomial completely.
Alexxandr [17]

Answer:

The answer is A. (4x²+3)(x+2)

Step-by-step explanation:

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4 0
2 years ago
Is 18/54 equivalent to 3/9?
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3 years ago
The fuel efficiency in miles per gallon of all bmw 320i's is (approximately) normally distributed with a mean of 25 and a standa
grigory [225]
Given:
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σ = 2 mpg, the population standard deviation

If we select n samples for evaluation, we should calculate z-scores that are based on the standard error of the mean.
That is,
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The random variable is x = 24 mpg.

Part (i):  n = 1
σ/√n = 2
z = (24 -25)/2 = -0.5
From standard tables,
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Part (ii): n = 4
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Part (iii): n=16
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z = (24 - 25)/0.5 = -2
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Explanation:
The larger the sample size, the smaller the standard deviation.
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6 0
3 years ago
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s2008m [1.1K]
I think it takes her brother 30 minutes to complete his homework.

Because 3/5 of an hour is 36/60

5/6 = 30/36

Hope this helps! :)
4 0
2 years ago
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