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3 years ago

What is 0.00015 in scientific notation?

Mathematics

1 answer:

solong [7]3 years ago

8 0

Answer:

1.5 * 10^(-4) is the scientific notation.....

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Rea Calculations

son4ous [18]

Area = length x width
10 X 5 = 50

7 0

3 years ago

If the price of a bag of Ritz peanut butter crackers increases from $0.70 to $0.80, what it the percent increase?

Shtirlitz [24]

Answer:

14%

Step-by-step explanation:

To get the percent increase divide 0.8 by 0.7

0.8/0.7 ≈ 1.14285714286

So the percent increase would by about 14 percent

3 0

3 years ago

There are 12 people in cafe. half of them are drinking coffee. How many people are drinking coffee?

enot [183]

The answer is 6 people.

Half of the 12 people in the cafe would be 6 people. You can find half of a number by dividing it by two, or multiplying it by .5

4 0

3 years ago

A 12 foot board is cut so that one piece is 5 times as long as the other. Find the length of each piece.

sveta [45]

Answer:

2 and 10

Step-by-step explanation:

Let x be length of the small piece and y the length of the big one.

● y = 5x

Since the big piece is 5 times longer than the short one.

The total length is 12 ft

● y + x = 12

● 5x + x = 12

● 6x = 12

Divide both sides by 6

● 6x/6 = 12/6

● x = 2

So the length of the two pieces are 2 ft and 10 ft (5×2)

4 0

3 years ago

Assume that females have pulse rates that are normally distributed with a mean of u = 75.0 beats per minute and a standard devia

Elan Coil [88]

Answer:

36.88% probability that her pulse rate is between 69 beats per minute and 81 beats per minute.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 75, \sigma = 12.5$