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2 years ago

Sumi lives 2 miles from school. valerie lives 10,542 feet from school. who lives closer to school ?

2 answers:

8 0

Valerie lives closer because when you convert the 2 miles to feet from where Sumi is it’s 10,560 feet so the answer is Valerie.

nasty-shy [4]2 years ago

5 0

Sumi because 10452 feets are 1.997 miles

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What formula would I use to find X?

liraira [26]

Check the picture below.

make sure your calculator is in Degree mode.

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2 years ago

What is the reason for each step in the solution of the equation?

Brums [2.3K]

The correct reason <span>for each step in the solution of the equation would be as follows:
</span>
12 − 5x + 6x = 4 - Given

12 + x = 4 - Combine Like Terms

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Hope this answers the question. Have a nice day.

8 0

2 years ago

A sculptor is selling her work at an exhibit and hopes to earn at least $31,000 in revenue. Small pieces go for $780 and large p

Sauron [17]

The answer should be

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3 0

2 years ago

Read 2 more answers

Seventy-six percent of sunflower seeds will germinate into a flower, and a sample of 800 such sunflower seeds is randomly select

ollegr [7]

Answer:

12.08

Step-by-step explanation:

For each sunflower, there are only two possible outcomes. Either it germinates, or it does not. The probability of a sunflower germinating is independent of other sunflowers. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Seventy-six percent of sunflower seeds will germinate into a flower

This means that $p = 0.76$

Samples of 800:

This means that $n = 800$

The standard deviation for the number of sunflower seeds that will germinate in such samples of size 800 is:

$\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{800*0.76*0.24} = 12.08$

5 0

2 years ago

Last year, the numbers of skateboards produced per day at a certain factory were normally distributed with a mean of 20,500 skat

alisha [4.7K]

Answer:

This can be solved by using the empirical rule for a normal distribution.

Step-by-step explanation:

A. The number of skateboards given is one standard deviation above the mean. Approximately 68% of the data points lie within the range plus and minus one standard deviation of the mean. Therefore the required percentage is:

68 + 16 = 84%.

B. The given number of skateboards is two standard deviations above the mean. Approximately 95% of the data points lie within the range plus and minus two standard deviations of the mean. Therefore the required percentage is:

5/2 = 2.5%

C.The given number of skateboards is one standard deviations below the mean. Therefore the required percentage is:

16%.

8 0

2 years ago