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3 years ago

Find the total surface area of the cone in the figure. ( use rr=3.14.)

Mathematics

1 answer:

nikitadnepr [17]3 years ago

4 0

Answer:

Answer D

Step-by-step explanation:

The formula is $A = pi r(r+\sqrt{h^2+r^2})$ . We have our r (radius) and h (height), so plugging it all in would give us A = (3.14)(5 + sqrt(12^2)+(5^2). After computing this, you would get answer D, 282.6.

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myrzilka [38]

100 ounces = 6.25 pints

A mile unit is equal to 1760 yards. inches =mile * 63360 2*63360=126720

2 Miles = 126720 Inches

There are 36 inches in a yard

3600/36= 100

3600 inches = 100 yards

1 m = 1/1000 km

6800/1000 = 6.8

6800 m = 6.8 km

1 m = 100 cm

15000/100=150

15000 cm=150 m

a) Johnson ran yard in second= 9

1 minute = 60 second

Johnson ran yard in one minute= 9 *60= 540 yards

b) Johnson ran yard in second= 9

1 hour = 60 minutes *60 second= 1200 seconds

Johnson ran yard in one hour= 9 *1200= 10,800 yards

c) Johnson ran yard in one hour= 9 *1200= 10,800 yards

1 mile = 1760 yards

miles did he run in one hour= 10,800 / 1760 =6

Johnson ran 6 mile in one hour

5 0

3 years ago

Help within 10 min pleeeeeeeeeease

sineoko [7]

The answer should be 75

4 0

2 years ago

Read 2 more answers

What is 9^3 as a power of 3

Alex787 [66]

Answer:

729

Step-by-step explanation:

9³ you just type that in the calculator

4 0

2 years ago

Read 2 more answers

Mopeds (small motorcycles with an engine capacity below 50cm3) are very popular in Europe because of their mobility, ease of ope

d1i1m1o1n [39]

Answer:

a) 96.64% probability that maximum speed is at most 50 km/h

b) 24.67% probability that maximum speed is at least 48 km/h

c) 86.64% probability that maximum speed differs from the mean value by at most 1.5 standard deviations

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:

$\mu = 46.8, \sigma = 1.75$

A. What is the probability that maximum speed is at most 50 km/h?

This is the pvalue of Z when X = 50. So

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

$Z = \frac{50 - 46.8}{1.75}$

$Z = 1.83$

$Z = 1.83$ has a pvalue of 0.9664

96.64% probability that maximum speed is at most 50 km/h.

B. What is the probability that maximum speed is at least 48 km/h?

This is 1 subtracted by the pvalue of Z when X = 48.

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

$Z = \frac{48 - 46.8}{1.75}$

$Z = 0.685$

$Z = 0.685$ has a pvalue of 0.7533

1 - 0.7533 = 0.2467

24.67% probability that maximum speed is at least 48 km/h.

C. What is the probability that maximum speed differs from the mean value by at most 1.5 standard deviations?

Z = 1.5 has a pvalue of 0.9332

Z = -1.5 has a pvalue of 0.0668

0.9332 - 0.0668 = 0.8664

86.64% probability that maximum speed differs from the mean value by at most 1.5 standard deviations

6 0

3 years ago

Your parents purchase a computer for $1,257.00 plus 6% sales tax. They decide to finance it through the store’s 0% program for 6

Katena32 [7]

Answer:

$111.59

Step-by-step explanation:

The total amount of the purchase was the cost of the computer plus the sales tax:

$1,257*1,06= $1,332.42

Now, to determine the interest that they will have to pay, you have to consider that the interest rate is 16,75% APR that is the annual percentage rate but as only 6 month have passed, the interest rate at this point that they have to pay is 8.375%:

$1,332.42*8.375%= $111.59

The interest that they will be charged is $111.59

5 0

3 years ago