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finlep [7]
3 years ago
15

Can someone please help me with thiss!?

Mathematics
1 answer:
DIA [1.3K]3 years ago
5 0

I would first find the volume of the hole and multiply that by 2 because there's 2 holes.

v = lwh

v = (5)(8)(5)

v = 200

200 \times 2 = 400

//

I would then find the volume of the entire cinder block.

v = lwh

v = (16)(8)(8)

v = 1024

//

I would then substract.

1024 - 400 = 624

The volume of the cinder blocks is 624 inches³

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jarptica [38.1K]

Step-by-step explanation:

x+50 = 180 because asim circle

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3 years ago
The heights of students at a college are normally distributed with a mean of 175 cm and a standard deviation of 6 cm. One might
frosja888 [35]

Answer:

25

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 175cm

Standard deviation = 6 cm

Percentage of students below 163 cm

163 = 175 - 2*6

So 163 is two standard deviations below the mean.

By the Empirical rule, 95% of the heights are within 2 standard deviations of the mean. The other 100-95 = 5% are more than 2 standard deviations of the mean. Since the normal distribution is symmetric, 2.5% of them are more than 2 standard deviations below the mean(so below 163cm) and 2.5% are more than two standard deviations above the mean.

2.5% of the students have heights less than 163cm.

Out of 1000

0.025*1000 = 25

25 is the answer

8 0
3 years ago
Read 2 more answers
Plz Help me, show you work plz, #17 
AlekseyPX
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What are the solutions of the equation. 3x-1=2x
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Answer:

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3 years ago
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