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3 years ago

Help pls I really need this. Do I need to add or multiply and also I need the answer? Will get brainlist and 10 points

Mathematics

1 answer:

harkovskaia [24]3 years ago

4 0

Answer:

336 cubic inches

Step-by-step explanation:

Multiply length by width by height for volume.

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Helen had to read 148 pages of her science textbook in the 4 days remaining before an exam. If she reads the same number of page

iragen [17]

Answer:

b)37

Step-by-step explanation:

8 0

3 years ago

A scuba divers dove 950 feet below the surface in 19 minutes what integer represents the average rate of change for this dive?

NeTakaya

"950 feet in 19 minutes" can be expressed as the rate (950/19) (ft/min), and is negative because the diver is descending (going downward).

Simplifying, -950/19 (ft/min) = -50 (ft/min)

6 0

3 years ago

If $20,900 is invested at an interest rate of 8 percent per year, find the value of the investment at the end of 5 years for the

Katena32 [7]

Answer:

annual

Step-by-step explanation:

You make a single deposit of $100 today. It will remain invested for 4 years at 8% per year compounded annually. What will be the future value of your single deposit at the end of 4 years?

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3 years ago

ccording to the U.S. National Weather Service, at any given moment of any day, approximately 1000 thunderstorms are occurring wo

viva [34]

Answer:

The critical value of z for 99% confidence interval is 2.5760.

The 99% confidence interval for population mean number of lightning strike is (7.83 mn, 8.37 mn).

Step-by-step explanation:

Let X = number of lightning strikes on each day.

A random sample of n = 23 days is selected to observe the number of lightning strikes on each day.

The random variable X has a sample mean of, $\bar x=8.1\ mn$ and the population standard deviation, $\sigma=0.51\ mn$ .

The (1 - α)% confidence interval for population mean μ is:

$CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

Compute the critical value of z for 99% confidence interval is:

$z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.5760$

*Use a z-table.

The critical value of z for 99% confidence interval is 2.5760.

Compute the 99% confidence interval for population mean number of lightning strike as follows:

$CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}\\=8.1\pm2.5760\times\frac{0.51}{\sqrt{23}}\\=8.1\pm0.2738\\=(7.8262, 8.3738)\\\approx(7.83, 8.37)$

Thus, the 99% confidence interval for population mean number of lightning strike is (7.83 mn, 8.37 mn).

The 99% confidence interval for population mean number of lightning strike implies that the true mean number of lightning strikes lies in the interval (7.83 mn, 8.37 mn) with 0.99 probability.

3 0

3 years ago

Mrs. Jackson is covering her bulletin board with new paper. What formula should she use to figure out how much paper to buy?

Aliun [14]

Answer: A = L x W

Step-by-step explanation:. Mrs. Jackson should use the formula to calculate area in order to figure out how much paper to buy. The formula is Area = Length x Width. This will tell her exactly how much paper she will need to cover the bulletin board.

3 0

3 years ago

Read 2 more answers