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3 years ago

200,000,000 in scientific notation

Mathematics

2 answers:

Nookie1986 [14]3 years ago

7 0

Answer:

2 times 10 to the power of 8

Step-by-step explanation:

salantis [7]3 years ago

3 0

Answer:

2x10 power 8

$2 \times {10}^{8}$

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A 5 gallon can of motor oil costs $28.00. What is the cost of 1 quart of the oil?

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Answer: 1.460

Step-by-step explanation:

Given : Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college.

Let $\mu$ represents the population mean .

Then, the set of hypothesis will be:-

$H_0: \mu=15$

$H_a:\mu\neq15$

We assume that this is normal distribution.

Sample size : n = 10, which is a small sample (n<30) ,s o we use t-test.

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3 years ago

The sum of three numbers is 75. The third number is 2 times the first. The second number is 9 less than the first. What are the

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Let the three numbers be x, y and z. Then x+y+z=75.
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Eliminate y and z by substitution: x + (x - 9) + (2x) = 75

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