All categories

3 years ago

A spherical balloon has a -in. diameter when it is fully inflated. Half of the air is let out of the balloon. Assume that the b

alloon remains a sphere.
a. Find the volume of the fully-inflated balloon.
b. Find the volume of the half-inflated balloon.
c. What is the radius of the half-inflated balloon?

Mathematics

1 answer:

4vir4ik [10]3 years ago

5 0

$\frac{256}{3} Pi$

You might be interested in

Surface area of a cylinder with a diameter of 14 and height is 9

Setler79 [48]

The radius is 7 if the diam. is 14. We can find the surface area (without top or bottom areas) by finding the circumference of the base and then multiplying it by the height:

C=pi*d = pi(14); height = 9. Then the surface area of the side(s) is 14(pi)(9).

If you wish to include the areas of the top and bottom of the cylinder, add
2(pi)r^2 = 2(pi)(7)^2.

6 0

3 years ago

Whaat does mean, meadain,mode and,range mean?

Oliga [24]

Answer:

Median is the center of the numbers that you were given

Mode is the number that appears most often

Range is the difference between the lowest and highest numbers

Mean is the average

Step-by-step explanation:

Median: line all numbers up in order from greatest to least and then count to the center if there are 2 in the center add them and divide them by 2.

Mode: Count how many of each number

Range: Subtract the largest number from the smallest. 17-12=5 5 is the range

Mean: Add all numbers up and divide by the amount of numbers.

1+3+5+3=12

12/4 = 3, three is the mean

5 0

4 years ago

Read 2 more answers

A national survey of 2000 adult citizens of a nation found that 24% dreaded Valentine's Day. The margin of error for the surve

Goryan [66]

Answer:

The correct option is (A).

Step-by-step explanation:

The (1 - α)% confidence interval for the population proportion is:

$CI=\hat p \pm MOE$

The information provided is:

$\hat p$ = 0.24

MOE = 0.089

The 85% confidence interval for the population proportion of adults who dreaded Valentine's Day is:

$CI=\hat p \pm MOE$

$=0.24\pm 0.089\\=(0.151, 0.329)$

So, the 85% confidence interval for the population proportion of adults who dreaded Valentine's Day is (0.151, 0.329).

The (1 - α)% confidence interval for population parameter implies that there is a (1 - α) probability that the true value of the parameter is included in the interval.

Or, the (1 - α)% confidence interval for the parameter implies that there is (1 - α)% confidence or certainty that the true parameter value is contained in the interval.

So, the 85% confidence interval for the population proportion, (0.151, 0.329), implies that there is 85% confidence that the proportion of the adult citizens of the nation that dreaded Valentine's Day is between 0.151 and 0.329.

Or there is 0.85 probability that the true proportion of the adult citizens of the nation that dreaded Valentine's Day is between 0.151 and 0.329.

Thus, the correct option is (A).

7 0

3 years ago

If stamps are $0.30 how many stamps can Janice buy with $7.20

snow_lady [41]

Divide the total amount of money Janice has by the cost of the stamps.

$7.20 / $0.30 = 24

Janice can buy 24 stamps.

7 0

4 years ago

7. An equilateral triangle has sides of length 6.2cm, correct to the nearest millimetre.

Zolol [24]

Answer: 6.2*3= 18.6cm

8 0

3 years ago

A spherical balloon has a ​-in. diameter when it is fully inflated. Half of the air is let out of the balloon. Assume that the b

A spherical balloon has a -in. diameter when it is fully inflated. Half of the air is let out of the balloon. Assume that the b