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3 years ago

Which equation shows the substitution method being used to solve the system of linear equations?

Mathematics

1 answer:

stealth61 [152]3 years ago

3 0

A. (y+3)-y = 7 is the correct answer

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(-2,1) and (4,9), (-3,8) and (5,2)<br> Are the lines parallel, perpendicular, or neither?

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Answer:

perpendicular

Step-by-step explanation:

if you find the slope of the points, they are completely opposite 4/3 and -3/4

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3 years ago

you and four friends go to johnny rockets. you all split the bill equally. each person share was $6.50. how much was the origina

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$26 is the answer to the question

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4 years ago

Read 2 more answers

What are the terms in this expression 3+4x5

irakobra [83]

You have zero terms in that equation. A term is when a number is connected to a variable. You have no variables.
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3 years ago

What is the probability of drawing a 9 of spades from a 52-card deck given the deck is properly shuffled?

avanturin [10]

1.923% (Roughly)

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3 years ago

n HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you tha

Dominik [7]

Answer:

0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 17.39 ppm

Standard Deviation, σ = 4.25 ppm

Sample size = 11

We are given that the distribution of printing speed is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

P(printing speed of the sample is greater than 17.99 ppm.)

P(x > 17.99)

$P( x > 17.99) = P( z > \displaystyle\frac{17.99-17.39}{\frac{4.25}{\sqrt{11}}}) = P(z > 0.468229)\\\\P( z > 0.468229) = 1 - P(z < 0.468229)$

Calculating the value from the standard normal table we have,

$1 - 0.679 = 0321= 32.1\%\\P( x > 17.99) = 32.1\%$

Thus, 0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

8 0

4 years ago