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3 years ago

2(x+y) = I need the answer and how’d you get it.

Mathematics

2 answers:

ExtremeBDS [4]3 years ago

6 0

Answer:

2x + 2y

Step-by-step explanation:

2 (x+y)

You distribute the properties and you get:

2x + 2y

prohojiy [21]3 years ago

5 0

Answer:

2x + 2y

Step-by-step explanation: you had to to simplify

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Correlation always implies causation. Is this statement correct?

svetoff [14.1K]

Answer:

Correlation does not always imply causation. (It's not correct)

Step-by-step explanation:

Correlation tests 2 variables' relationship, but just because they are related does not mean they necessarily cause each other.

3 0

3 years ago

Find the product of all positive divisors of 288.

irinina [24]

Answer:

The answer is 1.514571894×10^21.

Step-by-step explanation:

Here, the divisors of 288 are,

1,2,3,4,6,8,9,12,16,18,24,32,36,48,72,96,144,288.

now, their product =1×2×3×4×6×8×9×12×16×18×24×32×36×48×72×96×144×288

=1.514571894×10^21.

is answer. 

Hope it helps...

6 0

3 years ago

Read 2 more answers

- 5x - 2y <6 y >-x+1

butalik [34]

Answer:

i dont know im only in 7th

Step-by-step explanation:

teehee

5 0

3 years ago

What is the value of x? Enter your answer in the box. x = °

Elodia [21]

Answer: 90°
Explanation: the sum of all the angles in a triangle = 180. So 70 + 30 = 90 and 180-90=90

3 0

3 years ago

The dwarves of the Grey Mountains wish to conduct a survey of their pick-axes in order to construct a 99% confidence interval ab

Dmitry_Shevchenko [17]

Answer:

The minimum sample size needed is 125.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , 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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

For this problem, we have that:

$\pi = 0.25$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

What minimum sample size would be necessary in order ensure a margin of error of 10 percentage points (or less) if they use the prior estimate that 25 percent of the pick-axes are in need of repair?

This minimum sample size is n.

n is found when $M = 0.1$