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Svetlanka [38]
3 years ago
9

Need someone’s help please

Mathematics
1 answer:
pentagon [3]3 years ago
4 0

Answer:

Step-by-step explanation:

1. A

2. B

3. C

4. D

5. B

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1.75 + .75m = 4.75 what’s the answer in solution for this problem
ELEN [110]

Answer:

m=4

Step-by-step explanation:

We are to find the value of m in the question

1.75+0.75m=4.75

Let's start by substrating 1.75 from both sides

0.75m=3

We will have to make m the subject of formula by dividing both sides by 0.75

m=4

Therefore the final answer for m is 4

5 0
3 years ago
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How does a "for every" statement show a ratio comparison? PLEASE ANSWER ITS SO LATE WHERE I AM AND IM TIRED
Neporo4naja [7]
Because it states that for every amount of something there is a certain amount based on something else. For example, for every apple i have, i will have two bananas. This will go into the ratio 1:2. Hope this helps☺
7 0
4 years ago
The NWBC found that 42.1% of women-owned businesses provided retirement plans contributions.
Natasha_Volkova [10]

Answer:

Sample size of 586 or higher.

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}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

What sample size could be 95% confident that the estimated (sample) proportion is within 4 percentage points of the true population proportion?

Sample size of at least n when M = 0.04

42.1% of women-owned businesses provided retirement plans contributions, which means that p = 0.421. So

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

0.04 = 1.96\sqrt{\frac{0.421*0.579}{n}}

0.04\sqrt{n} = 0.9677

\sqrt{n} = \frac{0.9677}{0.04}

\sqrt{n} = 24.19

\sqrt{n}^{2} = (24.19)^(2)

n = 585.2

We need a sample size of 586 or higher.

3 0
3 years ago
Sarah bought 6 2/3 yards of material. She used 3/4 of the material to make a costume for the school play. How much material did
Lelechka [254]
You’re full of cap don’t cap next time you’re capping the answer is 5/3
7 0
3 years ago
What is the slope of the line that contains the points (-1,8 ) and 5,-4
Tema [17]
Use rise over run:

(-4 - 8)/(5 - -1) = -2.

The slope is -2.
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3 years ago
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