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2 years ago

I will give Brainiest if you are right

Mathematics

2 answers:

alexira [117]2 years ago

3 0

Answer:

Step-by-step explanation:

G. Plug in x=5 to x-2<7

which becomes

5-2<7

3<7

which is correct.

Hope This Helps!

gavmur [86]2 years ago

3 0

G if you plug in 5 as x it is the only one that is correct

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Shirley has earned $148 doing chores, but she wants to have earned at least $200 by the end of the week. if she does chores ever

asambeis [7]

Next 7 days
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2 years ago

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 3%

andre [41]

Answer: a) 683 b) 1067

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$p\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}$

a) Given : Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}}=\pm1.96$

Margin of error : $E=0.03$

Formula to calculate the sample size needed for interval estimate of population proportion :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.2(0.8)(\dfrac{1.96}{0.03})^2=682.951111111\approx683$

Hence, the required sample size would be 683 .

b) If no estimate of the sample proportion is available then the formula to calculate sample size will be :-

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.96}{0.03})^2=1067.11111111\approx1067$

Hence, the required sample size would be 1067 .

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2 years ago

Which of the following is an arithmetic sequence? -7/11 6/11 -5/11 4/11....

Anastasy [175]

Answer:

the right answer is $\frac{3}{4} ,-\frac{3}{5},- \frac{3}{6} ,-\frac{3}{7}$

Step-by-step explanation:

to find the reason for the sequence, the following formula must be used;

q = t2 / t1

where t2 is equal to the second value of the sequence and t1 to the first value.

q= t2/t1

q = $\frac{-\frac{3}{5} }{-\frac{3}{4} } = \frac{12}{15} =\frac{4}{5}$

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2 years ago

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patriot [66]

Answer:58 approximately c

Step-by-step explanation:

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2 years ago

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Dahasolnce [82]

Answer:

x=-6 D

Step-by-step explanation:

easy

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2 years ago

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