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kondor19780726 [428]
3 years ago
14

Which property is used in the problem below? 2(x+4)=2x+8 the associative property the commutative property the distributive prop

erty the additive identity property
Mathematics
2 answers:
Serga [27]3 years ago
6 0
The answer is C) The Distributive property.
2(x+4) got turned into 2x+8.

The distributive property does this:
2 times x plus 2 times 4.

2 times x = 2x
2 times 4 = 8.

So the answer is 2x+8.

C) Distributive property is right.
mina [271]3 years ago
3 0

Answer: I took a test, the answers C.

Step-by-step explanation:

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Studies have suggusted that twins, in their early years, tend to have lower IQs and pick up language more slowly than non-twins.
Anna007 [38]

Answer:

Confidence interval: (21.9, 32.9).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 26 - 1 = 25

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 25 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.98}{2} = 0.99. So we have T = 2.485

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.485\frac{11.2}{\sqrt{26}} = 5.5

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 27.4 - 5.5 = 21.9 hours

The upper end of the interval is the sample mean added to M. So it is 27.4 + 5.5 = 32.9 hours

Confidence interval: (21.9, 32.9).

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3 years ago
Can someone identify the alternate interior angle? Please refer to image below.
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Answer:

Police and icecream are alternate interior angles. So is the bakery and deli.

Step-by-step explanation:

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Differentiate each term with respect to x , then solve y'.

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PLEASE HELP 13 PTS
ehidna [41]

Answer:

A.

Step-by-step explanation:

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Answer:

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