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3 years ago

Does the table represent a proportional relationship? (I know I'm asking again but I am legit confused now)

Mathematics

2 answers:

Sedaia [141]3 years ago

7 0

Answer:

No. There is not a constant slope on the y side of the table

Step-by-step explanation:

RideAnS [48]3 years ago

7 0

Answer:

I believe so it a difference between x and y so it should be.

Step-by-step explanation:

im a little bit confused but i believe thats right

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Can i get help please??

xxMikexx [17]

Answer:

2*6*pi

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6 0

4 years ago

5,687.3 mi to the nearest mile

beks73 [17]

5687.3 to the nearest mile is 5,687 miles

Because the number directly to the right of ur 7 is a 3....and since it is below 5, ur whole number stays the same....if that number would have been a 5 or above, u would have rounded ur whole number up 1 making it 5688.

7 0

3 years ago

Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t

olga55 [171]

Answer:

623

Step-by-step explanation:

Given that margin of error (E) = 3 unit, standard deviation (σ) = 29, sample size (n) = ?

a) The confidence (C) = 99% = 0.99

α = 1 - C = 1 - 0.99 = 0.01

α/2 = 0.01 / 2 = 0.005

From the normal distribution table, The z score of α/2 (0.005) is the critical value and it corresponds to the z score 0.495 (0.5 - 0.005) which is 2.58.

$critical\ value = z_{\frac{\alpha}{2} }=z_{0.005}=2.58\\$

b) The margin of error (E) is given as:

<h3> $E=z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }\\\\\sqrt{n}= z_{\frac{\alpha}{2} }*\frac{\sigma}{E }\\ \\n=( z_{\frac{\alpha}{2} }*\frac{\sigma}{E })^2\\\\Substituting:\\\\n=(2.58*\frac{29}{3} )^2=622.0036\\\\\\n=623(to\ the \ next\ whole\ number)$ </h3>

The minimum sample size (n) is 623

3 0

4 years ago

Geometry help please!!! 20 points :)

olganol [36]

The answer to this question is 133.2.

4 0

4 years ago

Read 2 more answers

Beth and Darcy are each driving a car. They start at the same location and will be driving the same route.

Agata [3.3K]

After 150 miles, Beth will have used 150x 1/30 = 5 gallons, which leaves 10 gallons remaining in the tank.After 150 miles, Darcy will have used 150x 1/25 = 6 gallons, which leaves 10 gallons remaining in the tank. Meaning they will have the same number of gallons left at 150 miles

8 0

3 years ago