3 years ago

I am doing rate of change a review. I NEED HELP ASAP PLEASE SOMEONE ANYONE HELP ME PLEASE?

Mathematics

2 answers:

NISA [10]3 years ago

4 0

3/2 would be the correct answer let me know if this is correct

ad-work [718]3 years ago

3 0

Answer:

3/2

I hope this helps

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Find the solution of this system of equations. Separate the x- and y-values with a comma. x - 2y = -23 and x - y = 7

snow_lady [41]

Solve the following system using elimination:
{x - 2 y = -23 | (equation 1)
{x - y = 7 | (equation 2)

Subtract equation 1 from equation 2:
{x - 2 y = -23 | (equation 1)
{0 x+y = 30 | (equation 2)

Add 2 × (equation 2) to equation 1:
{x+0 y = 37 | (equation 1)
{0 x+y = 30 | (equation 2)
Collect results:
Answer: {x = 37 , y = 30

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3 years ago

Consider the given triangle. If a = 83 and b = 70, then the measure of ZB =

miv72 [106K]

Answer:

If ZB is the 3rd angle, since a triangle has 180 degrees total just do 83+70+x=180 sooooo x=27

Step-by-step explanation:

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3 years ago

Sleep apnea: Sleep apnea is a disorder in which there are pauses in breathing during sleep. People with this condition must w up

bonufazy [111]

Answer:The required interval is (0.196, 0.030).

Step-by-step explanation:

Since we have given that

n = 432

x = 108

So, $\hat{p}=\dfrac{x}{n}=\dfrac{108}{432}=0.25$

at 99% level of confidence, z = 2.576

So, Margin of error would be

$z\times \sqrt{\dfrac{pq}{n}}\\\\=2.576\times \sqrt{\dfrac{0.25\times 0.75}{432}}\\\\=2.576\times 0.021\\\\=0.0536$

So, margin of error = 0.0536

Now, confidence interval would be

$\hat{p}\pm 0.0536\\\\=(0.25-0.0536,0.25+0.0536)\\\\=(0.1964,0.3036)\\\\\approx (0.196,0.030)$

Hence, the required interval is (0.196, 0.030).

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3 years ago

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a poll was conducted by a marketing department of a video game company to determine the popularity of a new game that was target

wolverine [178]

Answer:

False

Step-by-step explanation:

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3 years ago

Can somebody PLEASE explain in simple terms how to find probability involving the word "and"

schepotkina [342]

In probability there is a very important distinction between the words AND & OR.

AND means that the outcome has to satisfy both conditions at the same time.

OR Means that the outcome has the satisfy one condition OR the other condition OR both at the same.

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3 years ago