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Ivan
2 years ago
7

2(n+5)= -2 I need the full explination

Mathematics
2 answers:
lakkis [162]2 years ago
3 0

Answer:

n=-6

Step-by-step explanation:

2n + 10 = -2

2n=-12

n=-6

Hope this helps!

If not I'm sorry.

Shalnov [3]2 years ago
3 0
Answer: n=-6

step by step explanation:
2(n+5)=-2
multiply 2 by n and 2 by 5
2n+10=-2
you need to get the variable n on one side by itself so subtract 10 by -2
2n=-12
divide both sides by 2
n=-6
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Step-by-step explanation:

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3 0
3 years ago
The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent
Leona [35]

Answer: 709

Step-by-step explanation:

The formulas we use to find the required sample size :-

1. n=(\dfrac{z^*\cdot \sigma}{E})^2

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2. n=p(1-p)(\dfrac{z^*}{E})^2 , where p= prior estimate of population proportion.

3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes

n=0.25(\dfrac{z^*}{E})^2

Given : Margin of error : E= 3% =0.03

Critical value for 95% confidence interval = z*= 1.96

A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.

i.e. p=0.21

Then by formula 2., the required sample size will be :

n=0.21(1-0.21)(\dfrac{1.96}{0.03})^2

n=0.21(0.79)(65.3333)^2

n=(0.1659)(4268.44008889)\\\\ n=708.134933333\approx709 [Round to the next integer.]

Hence, the required sample size of junior executives should be studied = 709

4 0
4 years ago
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stich3 [128]
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5 0
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