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Elena-2011 [213]
3 years ago
15

What is the sum of 3.6 × 103 and 6.1 × 103?

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
7 0
The answer it 2261.88 to that
bekas [8.4K]3 years ago
4 0

Answer:

9.7x10^6

Step-by-step explanation:

when the exponent an base is the same you just add

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Is this right? PLEASE HELP ASAP‼️‼️‼️
Westkost [7]

Answer:

Yes, i do belive this is correct

3 0
3 years ago
Heights of Women. Heights of adult women are distributed normally with a mean of 162 centimeters and a standard deviation of 8 c
Bogdan [553]

Answer:

a) 6.68% of heights less than 150 centimeters

b) 58.65% of heights between 160 centimeters and 180 centimeters

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 162, \sigma = 8

a) The percentage of heights less than 150 centimeters

We have to find the pvalue of Z when X = 150. So

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

Z = \frac{150 - 162}{8}

Z = -1.5

Z = -1.5 has a pvalue of 0.0668

6.68% of heights less than 150 centimeters

b) The percentage of heights between 160 centimeters and 180 centimeters

We have to find the pvalue of Z when X = 180 subtracted by the pvalue of Z when X = 160.

X = 180

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

Z = \frac{180 - 162}{8}

Z = 2.25

Z = 2.25 has a pvalue of 0.9878

X = 160

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

Z = \frac{160 - 162}{8}

Z = -0.25

Z = -0.25 has a pvalue of 0.4013

0.9878 - 0.4013 = 0.5865

58.65% of heights between 160 centimeters and 180 centimeters

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3 years ago
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Answer:

2.5 hours roughly (2 hours 29 mins)

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alexandr1967 [171]

Answer:

Step-by-step explanation: see attachment

6 0
3 years ago
How would u write 64 square centimeters?Also for my problem would I put 70 feet or 70 square feet?
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64cm2 but make the number two small and in the corner of the m
70 square feet
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