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Zarrin [17]
2 years ago
13

Simplify completely.

Mathematics
2 answers:
Anna35 [415]2 years ago
7 0

Answer: The answer is 4/5

Step-by-step explanation:

Step 1: Write down the decimal divided by 1, like this: 0.800/1

Step 2: Multiply both top and bottom by 1000 (it's 1000 bcuz there're 3 decimal places, if there're 2 decimal places you'll multiply the top and bottom with 100)

                     (0.800/1) x (1000/1000)= 800/1000

Step 3: Simplified it. Notice that both 800 and 1000 can be divided by 200

                       800/200= 4

                       1000/200= 5

=> 4/5

Hope this help

KonstantinChe [14]2 years ago
4 0

Answer:

4/5

Step-by-step explanation:

You can remove the trailing 0s, and you have 0.8

this is equal to 8/10

8 and 10 can be divided by 2

8÷2=4

10÷2=5

thus, you get 4/5

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The standard IQ test has a mean of 97 and a standard deviation of 17. We want to be
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Variances add, so the standard deviations add in quadrature, like the Pythagorean Theorem in n dimensions.  This means the standard deviation of the average x is

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Answer: We need a sample size of 47 to be 95% certain of being within 5 points of the mean

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