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2 years ago

NEED HELP FASTS ON THIS

Mathematics

1 answer:

Ksju [112]2 years ago

7 0

C because the line is going down, defending, but it has not hit the bottom line, which is 0 height.

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Find the sample size necessary in order to be 95% confident when determining the true mean weight within 2 units (EC2). Assume t

bogdanovich [222]

Answer:

Step-by-step explanation:

Given:

Margin of error (E) = 2

Sample variance $(s^{2})$ = 44

Confidence level = 95%

The z- value at 95% confidence level is 1.96.

The sample using the provided information can be calculated as:

$n=(\frac{z(s)}{E})^{2} \\n=\frac{z^{2} s^{2} }{E^{2} } \\n=\frac{1.96^{2} (44) }{2^{2} }\\n= 42.52\\n=43$

Hence, the correct option is (c) 43.

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3 years ago

Marvin spent 2.8 hours which is 35% of his time at the recreational center playing ping pong. How long was Marvin at the recreat

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Answer:

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2 years ago

What is the area of the composite figure

deff fn [24]

to find the area of the figure, you first need to find the area of the separate figures: a triangle and a square.

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multiply 13 and 5 to get 65.

divide 65 by 2.

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then, find the area of the rectangle:

multiply 5 and 14 to get 70.

add those answers up, and you get:

102.5

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3 years ago

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Alecsey [184]

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