3 years ago

Which 2 statements are true

Mathematics

1 answer:

Inessa [10]3 years ago

6 0

Answer:

Good luck in Geometry my guy!

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5. Given beverage sales of $5,400 and cost of beverages sold of $900.00, the beverage cost

sertanlavr [38]

Answer:

25%

Step-by-step explanation:

4 0

3 years ago

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You want to estimate the mean weight loss of people one year after using a popular weight-loss program being advertised on TV. H

maria [59]

Answer:

At least 6907 people.

Step-by-step explanation:

Population std deviation = sigma= 10.6

Since population std deviation is known, we can use normal probability table to get sample size from confidence interval.

The sample mean weight loss is within 0.25 lb of the true population mean.

Hence margin of error < 0.25

Margin of error = z critical (std dev/n) where n = sample size

Z critical for 95% = 1.96

Hence 0.25 >1.96(10.6)/sq rt n

Simplify to get

sq rt n > 1.96(10.6)/0.25 = 83.104

Square both the sides to get

n > 83.104 square = 6906.27

i.e. sample size should be atleast 6907.

3 0

3 years ago

4y = 42 - 3y<br><br> Can you help me find y?

Lesechka [4]

4y = 42 - 3y

First, add '3y' to both of the sides.
$4y + 3y = 42$
Second, add '4y + 3y' to get '7y'.
$7y = 42$
Third, divide both sides by '7'.
$y = \frac{42}{7}$
Fourth, how many times does 7 go into 42? 42 ÷ 7 = '6'.
$y = 6$

Answer: y = 6

7 0

3 years ago

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What is 2/4^2 x 2/6^2

KIM [24]

Answer:

1/72

Step-by-step explanation:

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3 years ago

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Answer please.....<br> Thanks!!!!