2 years ago

Need help please!!!!

Mathematics

1 answer:

storchak [24]2 years ago

3 0

Answer:

b^(-4/5) ...............

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A watercolor painting is 23 inches long by 11 inches wide. Ramon makes a border around the watercolor painting by making a mat t

erik [133]

Answer:

288 inches ²

Step-by-step explanation:

Water color painting

Length = 23 inches

Width = 11 inches

Mat that adds 1 inch to each side of the length and the width

Mat

Length = 23 + 1 = 24 inches

Width = 11 + 1 = 12 inches

What is the area of the mat?

Area of the mat = length × width

= 24 inches × 12 inches

= 288 inches ²

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2 years ago

-11-(-5)

Sonja [21]

Answer:

B.a numerical expression

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1 year ago

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kirza4 [7]

I think it would be 6

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3 years ago

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Find the sample size required to achieve the given margin of error with SD = 51.02 and z - score = 1.96. Round your answer to th

coldgirl [10]

Answer:

The sample size required is 2500.

Step-by-step explanation:

z-score:

In function of the margin of error M, the z-score is given by:

$Z = \frac{M}{\frac{\sigma}{\sqrt{n}}} = \frac{M\sqrt{n}}{\sigma}$

In this question, we have that:

$\sigma = 51.02, M = 2, Z = 1.96$

$Z = \frac{M\sqrt{n}}{\sigma}$

$1.96 = \frac{2\sqrt{n}}{51.02}$

$2\sqrt{n} = 51.02*1.96$

$\sqrt{n} = \frac{51.02*1.96}{2}$

$(\sqrt{n})^2 = (\frac{51.02*1.96}{2})^2$

$n = 2500$

The sample size required is 2500.

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2 years ago

Need help with a couple of geometry word problems. Giving 100 points, tysm if you help :)

dlinn [17]

Answer:

Hope it helps

Step-by-step explanation:

1: B

2: B

3: D

4: C

5: A

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2 years ago