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Ann [662]
3 years ago
7

2(s+2)=4(s+2) Need Steps!

Mathematics
2 answers:
slega [8]3 years ago
5 0

Answer:

s = -2

Step-by-step explanation:

2(s+2)=4(s+2)

2s + 4 = 4s + 8

2s - 4s = 8 - 4

-2s + 4

s = -2

Leni [432]3 years ago
4 0

Answer:

s= -2

Step-by-step explanation:

first we open the brackets

2s+4=4s+8

then we bring like terms together

2s-4s= 8-4

-2s= 4

s= 4/-2

s= -2

hope it helps ,pls mark me as brainliest

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At a school, 1 out of every 3 girls who tried out for basketball made the
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1:2

Step-by-step explanation:

because only one gets into the team

and the remaining two don't make the team

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The camera shop wants to use the measure of central tendency that expresses how successful they are in selling camaers which mea
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A random sample of 40 binomial trials resulted in 14 successes. test the claim that the population proportion of successes does
mylen [45]

Using the z-distribution, since the p-value of the test is of 0.057 > 0.05, there is not enough evidence that the population proportion of successes does not equal 0.50.

<h3>What are the hypotheses tested?</h3>

At the null hypotheses, we test if the proportion of successes equals 0.5, hence:

H_0: p = 0.5

At the alternative hypotheses, we test if it does not equal, hence:

H_1: p \neq 0.5

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

For this problem, the parameters are given by:

n = 40, \overline{p} = \frac{14}{40} = 0.35, p = 0.5

Hence the test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = (0.35 - 0.5)/(0.5/sqrt(40))

z = -1.9.

<h3>What is the decision?</h3>

Using a z-distribution calculator, considering a two-tailed test, as we are testing if the proportion is different of a value, with z = -1.9, we get that the p-value of the test is of 0.057.

Since the p-value of the test is of 0.057 > 0.05, there is not enough evidence that the population proportion of successes does not equal 0.50.

More can be learned about the z-distribution at brainly.com/question/16313918

#SPJ4

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1 year ago
Express in simplified exponential notation.<br><br> x3 • x5 =
Usimov [2.4K]

Answer:

  x^8

Step-by-step explanation:

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  (x^a)(x^b) = x^(a+b)

Here you have ...

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Which deal is better? 10 slices of cheese at $2.48 or 12 slices of cheese at $3.18?
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