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AleksandrR [38]

4 years ago

9

a marchig band with 75 members make 2 rectangular marching formations. one rectangle has six rows and the other has 9 rows.expla

in how the members can form the two rectangles

2 answers:

mariarad [96]4 years ago

7 0

*marching just to let you know the correct spelling

rewona [7]4 years ago

4 0

9+6 is 15, 75/15 is 5 so one has 30 amd the other has 45

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In a population of 210 women, the heights of the women are normally distributed with a mean of 64.4 inches and a standard deviat

antoniya [11.8K]

Part A:

Given that i<span>n a population of 210 women, the heights of the women are normally distributed with a mean of 64.4 inches and a standard deviation of 2.9 inches.

If 36 women are selected at random, the mean of the sample is estimated by the mean of the population.

Thefore, the mean is given by: $\mu_{\bar{x}}=64.4 \ inches$

Part B:

The standard deviation using the finite population factor is given by:

$\sigma_{\bar{x}}= \frac{\sigma}{\sqrt{n}} \cdot \sqrt{\frac{N-n}{N-1} } \\ \\ = \frac{2.9}{\sqrt{36}} \cdot \sqrt{\frac{210-36}{210-1} } =\frac{2.9}{6} \cdot \sqrt{\frac{174}{209} } \\ \\ =0.4833(\sqrt{0.8325}) =0.4833(0.9124) \\ \\ =0.44$ </span>

8 0

3 years ago

Someone help, quick And please

vivado [14]

Answer:

x=6 since 6 is not being squared but to the power of zero

5 0

4 years ago

Suppose your salary in 2012 is $65,000 if the annual inflation rate is 4%, what salary do you need to make in 2021 in order for

vekshin1

The salary in 2012 was $65,000.

If the inflation rate is 4%, the salary should increase at least 4% per year to keep up with inflation.

Then, we can calculate the salary adjusted by inflation in 2021 as:

$S_{2021}=S_{2012}\cdot(1+i)^{2021-2012}=S_{2012}\cdot(1+i)^9$

Replacing with the data, we get:

$\begin{gathered} S_{2021}=S_{2012}\cdot(1+i)^9 \\ S_{2021}=65000\cdot(1+0.04)^9 \\ S_{2021}=65000\cdot1.04^9 \\ S_{2021}\approx65000\cdot1.4233118 \\ S_{2021}\approx92515.27 \end{gathered}$

Answer: the adjusted salary to keep up with inflation should be $92,515.27 in 2021.

8 0

1 year ago

Ayden wrote 54.077 as the standard form for fifty-four and seventy-seven hundredths. Is he correct? Explain.

cestrela7 [59]

Answer:

No, Ayden is incorrect

Step-by-step explanation:

Because the last 7 is in the thousandth place so therefore he is wrong, but this would be <u>the correct answer </u><u>54.77</u> since the last 7 is in the hundredth place.

7 0

2 years ago

The length of an inflatable swimming poll is 2 meters 12 centimeters. How long is the pool in millimeters?

yKpoI14uk [10]

Answer:

2120 mm

Step-by-step explanation:

→ Convert 2.12 metres into centimetres

2.12 × 100 = 212 cm

→ Multiply by 10 to get into mm

212 × 10 = 2120 mm

7 0

2 years ago