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2 years ago

(please help last question) which of the following statements are true (brainliest)

Mathematics

1 answer:

puteri [66]2 years ago

7 0

Answer:

Both have a negative slope.

Step-by-step explanation:

Because:

The equation has a negative slope (-2).

The table has a negative slope (-0.5):

(0,3). (2,2)

(X1, y1). (X2, y2)

M = y2-y1

_____

X2- x1

M = 2 - 3 -1

_____ = ___

2-0 2

Hope this helps! Have a great day!

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Multiply: 14.3 x -0.5

Viefleur [7K]

Answer:

The answer is -7.15, hope this helps.

8 0

2 years ago

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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the

Vesna [10]

Answer:

A sample size of at least 1,353,733 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

You would like to be 98% confident that you esimate is within 0.1% of the true population proportion. How large of a sample size is required?

We need a sample size of at least n.

n is found when M = 0.001.

Since we don't have an estimate for the proportion, we use the worst case scenario, that is $\pi = 0.5$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.001 = 2.327\sqrt{\frac{0.5*0.5}{n}}$

$0.001\sqrt{n} = 2.327*0.5$

$\sqrt{n} = \frac{2.327*0.5}{0.001}$

$(\sqrt{n})^{2} = (\frac{2.327*0.5}{0.001})^{2}$

$n = 1353732.25$

Rounding up

A sample size of at least 1,353,733 is required.

5 0

3 years ago

Simplify completely:<br> 4V10 – V6 +3710<br> Show all work for full credit.

schepotkina [342]

The answer is 7√10−√6

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3 years ago

Solve for x using the quadratic formula x^2-6x +9=0

Rufina [12.5K]

Answer:

3 both ways x = 3

EXPLANATION:

plug in inputs and do a little simplifying we get

x = 6 ± √(36-36) all of that over 2

So we simplify and we get 6±sqrt(0) / 2

Then we get 6/2 = 3

x-0 = x+0

thats why there is only one answer

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3 years ago

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Can you tell me the answer? E = ?

Travka [436]

Answer:

$E=mc^{2}$

Step-by-step explanation:

An Albert Einstein iconic math problem.

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3 years ago