When u multiply by a fraction, you get a smaller number. Multiplication means<span> “of,” especially with fractions. So 0.2 × 9 means, “0.2 of nine”—and that’s smaller than nine. Hope that helps

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4 0

3 years ago

Find the cosine of 300°. Round your answer to the nearest hundredth, if necessary.

raketka [301]

Answer:

option C . 0.5

Step-by-step explanation:

$cos 300 = cos(2\pi - 300 ) = cos( 360 - 300) = cos 60 = 0.5$

Using the formula :

$cos\theta = cos (2\pi - \theta )$

8 0

3 years ago

According to an almanac, 70% of adult smokers started smoking before turning 18 years old. (a) if 200 adult smokers are rando

Strike441 [17]

Solution: (a) if 200 adult smokers are randomly selected, how many would we expect to have started smoking before turning 18 years old?

Answer: It is expected that in a random sample of 200 adult smokers, $0.70 (200)=140$ will have started smoking before turning 18.

(b) would it be unusual to observe 160 smokers who started smoking before turning 18 years old in a random sample of 200 adult smokers? why?

Answer: Yes, it would be unusual to observe 160 smokers who started smoking before turning 18 years old in a random sample of 200 adult smokers, because 160 is greater than μ + 2σ

3 0

3 years ago

What is the range for this set of data?<br><br> 7, 15, 12

coldgirl [10]

Answer:

The answer would be eight.

Step-by-step explanation:

The range is the difference between the largest and smallest number you need to make sure you have them in order or it won’t work.

7 0

3 years ago

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