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erastova [34]
3 years ago
9

Plzzz help me i hate math:(

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

D

Step-by-step explanation:

Combine the fractions by finding a common denominator (A denominator shared by two or more fractions.)

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Bob and Doug are both 100-meter sprinters. Bob's sprint time is normally distributed with a mean of 10.00 seconds and Doug's spr
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Answer:

The standard deviation (σ) = 0.05

Step-by-step explanation:

The question is to find the standard deviation.

STEEP 1: FIND THE MEAN

(10+9.9) ÷ 2 = 9.95

STEP 2: SQUARE THE DIFFERENCE BETWEEN SPRINT TIME AND MEAN

10-9.95= 0.05

0.05^2 = 0.0025

9.9 - 9.95= -0.0025

-0.0025^2 = 0.0025

STEP 3: FIND THE VARIANCE

0.0025+0.0025= 0.005

0.005/2= 0.0025

STEP 4: FIND THE STANDARD DEVIATION (σ )

√variance

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Therefore

σ = 0.05.

From the standard deviation, the percentage probability of the higher value to occurs is

0.05×100= 5%

That means Doug has 95%

And Bob has 5%

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3 years ago
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Answer:

Step-by-step explanation:

the answer would be -5x

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Answer:

Step-by-step explanation:

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