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expeople1 [14]
3 years ago
7

Help answer if u know

Mathematics
2 answers:
Setler [38]3 years ago
7 0

Answer:

b = 6 / 1/4

Step-by-step explanation:

C)

Wittaler [7]3 years ago
6 0
B=1/4 the answer is
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When 2251 voters were polled, 52% said they were voting yes on an initiative measure. find the margin of error and an interval t
expeople1 [14]
The margin of error for a sample proportion is given by
z_{\alpha/2}\sqrt{ \frac{p(1-p)}{n} }
where: z_{\alpha/2} is the z score associated with the confidence level, p is the sample prortion and n is the sample size.
We assume a confidence level of 95%, then z_{\alpha/2}=1.96
p = 52% = 0.52 and n = 2251

Therefore, margin of error =
 z_{\alpha/2}\sqrt{ \frac{p(1-p)}{n} }= 1.96\times \sqrt{ \frac{0.52(1-0.52)}{2251} }  \\ = 1.96\times \sqrt{ \frac{0.52(0.48)}{2251} } = 1.96\times \sqrt{ \frac{0.2496}{2251} } \\  = 1.96\times \sqrt{0.000110884} =1.96\times 0.0105 \\ =0.0206=2.1\%

The the interval that is likely to contain the true population proportion is between 49.9% and 54.1%.
5 0
3 years ago
2x + 3x + 20 + 10x - 5 = 10x + 16
mel-nik [20]

Answer:x=1 /5

Step-by-step explanation:

6 0
2 years ago
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5+10-20 asdfghjklzxcvbnmmmmmmmmmmmqwertyuiop
Rina8888 [55]

Answer:

-5

Step-by-step explanation:

5 0
3 years ago
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14 V = bdt. Solve the formula for de
snow_tiger [21]

Answer:

d=\dfrac{V}{bt}

Step-by-step explanation:

It is given that,

V = bdt i.e. V is equal to the product of b, d and t

We need to find the formula for d.

Dividing both sides of the given expression by bt

So,

\dfrac{V}{bt}=\dfrac{bdt}{bt}\\\\d=\dfrac{V}{bt},\ \text{bt in both denominator and numerator cancel out}

Hence, d=\dfrac{V}{bt} is the value of d.

5 0
3 years ago
Which ratio forms a proportiona with 5:15?<br><br> A: 10:20<br> B: 75:5<br> C: 3:1<br> D: 1:3
Nata [24]

Answer:

C

Step-by-step explanation:

6 0
3 years ago
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