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Sergeu [11.5K]
3 years ago
5

6. A semicircular disk of radius 3 ft. is revolved about its diameter (straight side) one complete revolution. Describe the soli

d determined by this revolution, and then find the volume of the solid.
Mathematics
1 answer:
kaheart [24]3 years ago
5 0

Answer:

) one complete revolution. Describe the solid determined by this revolution, and then find the volume of the solid.

Step-by-step explanation:

You might be interested in
XZ=n, WZ=2x-5, and the perimeter of ΔXWZ is 20. What is the value of n?
Sergio039 [100]

Answer:

d.

Step-by-step explanation:

Since it's an isosceles triangle, WX=WZ= 2n-5

Perimeter = n + (2n-5) + (2n-5)

= 5n - 10

The Perimeter is given to be 20

5n - 10 = 20

5n = 30

n = 6

3 0
3 years ago
SAT verbal scores are normally distributed with a mean of 433 and a standard deviation of 90. Use the Empirical Rule to determin
laila [671]

34% of the scores lie between 433 and 523.

Solution:

Given data:

Mean (μ) = 433

Standard deviation (σ) = 90

<u>Empirical rule to determine the percent:</u>

(1) About 68% of all the values lie within 1 standard deviation of the mean.

(2) About 95% of all the values lie within 2 standard deviations of the mean.

(3) About 99.7% of all the values lie within 3 standard deviations of the mean.

$Z(X)=\frac{x-\mu}{\sigma}

$Z(433)=\frac{433-\ 433}{90}=0

$Z(523)=\frac{523-\ 433}{90}=1

Z lies between o and 1.

P(433 < x < 523) = P(0 < Z < 1)

μ = 433 and μ + σ = 433 + 90 = 523

Using empirical rule, about 68% of all the values lie within 1 standard deviation of the mean.

i. e. ((\mu-\sigma) \ \text{to} \ (\mu+\sigma))=68\%

Here μ to μ + σ = \frac{68\%}{2} =34\%

Hence 34% of the scores lie between 433 and 523.

8 0
3 years ago
The mean and median sales prices of new homes sold in the United States in February 2016 were $ 217822 and $ 244614 , respective
anastassius [24]

Answer:

Mean: $217,822

Median: $244,614

Step-by-step explanation:

The mean and median sales prices of new homes sold in the United States in February 2016 were $ 217822 and $ 244614 , respectively.

Mean and median, then the term respectively.

This means that first comes the mean, and then the median.

So

Mean: $217,822

Median: $244,614

6 0
3 years ago
Read 2 more answers
As the office purchasing manager you have to buy printer paper. Your last
bixtya [17]

Answer:

a/1/$400

Step-by-step explanation:

240 divided by 12=20

20x10x2=$400

3 0
2 years ago
20(20-x)=300 what is x
neonofarm [45]

Answer:

x = 5

Step-by-step explanation:

20(20-x)=300

1. Divide both sides by 20.

20(20-x)/20 = 300/20

2. Simplify.

20-x=15

3. Subtract 20 from both sides.

20-x-29=15-20

4. Simplify.

-x=-5

5. Divide both sides by -1.

-x/-1 = -5/-1

6. Simplify.

x=5

5 0
2 years ago
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