3 years ago

What ordered pair is a solution of both y=3x-5 and y=x-7

Mathematics

1 answer:

aalyn [17]3 years ago

4 0

X= -1 y= -8 is the answer

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Simplify. 12x • 3x <br> 15 x<br> 15 x2 <br> 36 x2 <br> 36 x

garik1379 [7]

Answer:

36x

Step-by-step explanation:

You do 12 x 3 which equals 36. Then you add the x at the end.

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3 years ago

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Plls help. Read the question carefully plls

Vaselesa [24]

Answer: negative 6

Step-by-step explanation:

Since at the top of the mountain its already 0 and the degrees drop 3 each hour then multiply -3 by 2 hours and there you go.

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2 years ago

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Help me please

CaHeK987 [17]

I need points so I can ask my question hope you get your answer

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3 years ago

Jose earned 50 points in a video game. He lost 40 points, earned 87 points, then lost 30 more pints. Write and evaluate an expre

Aneli [31]

50-40+87-30=67

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3 years ago

A researcher obtained M = 27 for a sample of n = 36 scores selected from a population with µ = 30 and σ = 18. This sample mean c

dusya [7]

Answer:

True

Step-by-step explanation:

Given that:

M = 27, sample of n = 36 scores, µ = 30 and σ = 18.

The z score is used in statistics to determine by how many standard deviations the raw score is above or below the mean. If the z score is positive, the raw score is greater than the mean and if the z score is negative the raw score is less than the mean. The z score is given as:

$z=\frac{x-\mu}{\sigma}$

Given that M = 27, this means that x = 27. Therefore:

$z=\frac{x-\mu}{\sigma}\\\\for \ a\ sample\ size(n):z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\z=\frac{27-30}{18/\sqrt{36} } =\frac{-3}{3}=-1$

This sample mean corresponds to a z-score of z = –1.00.

7 0

3 years ago