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MatroZZZ [7]
3 years ago
12

Select the correct answer.

Mathematics
1 answer:
blondinia [14]3 years ago
7 0
Answer:

B) only plot B
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There are boys and girls in a class in the ratio 1:9<br> What fraction of the pupils are girls?
Furkat [3]

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9

Step-by-step explanation:

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3 years ago
Estimate each number to the nearest hundreds and find the sum. <br> 76549+5876
kherson [118]

Answer:

82,400 or 82,425

Step-by-step explanation:

3 0
4 years ago
I NEED HELP
BaLLatris [955]

Answer:

\dfrac{1}{6}\ \text{cups per hour}

Step-by-step explanation:

V = volume

r = rate

t = time

Use formula V=r\cdot t connecting volume, rate and time.

In your case,

V=\dfrac{1}{4} cup of water

t=1\dfrac{1}{2} hours

r is unknown.

Substitute all data into the formula:

\dfrac{1}{4}=r\cdot 1\dfrac{1}{2}\\ \\\dfrac{1}{4}=r\cdot \dfrac{3}{2}\\ \\2\cdot \dfrac{1}{4}=3r\ [\text{Multipled by 2}]\\ \\3r=\dfrac{1}{2}\\ \\r=\dfrac{\frac{1}{2}}{3}\ [\text{Divided by 3}]\\ \\r=\dfrac{1}{6}\ \text{cups per hour}

3 0
3 years ago
The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of 121 and standard deviation o
Wittaler [7]

Answer:

Around 0.73% of adults in the USA have stage 2 high blood pressure

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 121 and standard deviation of 16.

This means that \mu = 121, \sigma = 16

Around what percentage of adults in the USA have stage 2 high blood pressure

The proportion is 1 subtracted by the p-value of Z when X = 160. So

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

Z = \frac{160 - 121}{16}

Z = 2.44

Z = 2.44 has a p-value of 0.9927.

1 - 0.9927 = 0.0073

0.0073*100% = 0.73%

Around 0.73% of adults in the USA have stage 2 high blood pressure

5 0
3 years ago
How do i show my work for 40 divided by 17.00
asambeis [7]

Answer:2.35294117647 or 2.3

Just do 40/17

8 0
3 years ago
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