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3 years ago

Need this ASAP!! Would help if you could answer as quick as possible :)

Mathematics

1 answer:

kirza4 [7]3 years ago

6 0

Answer:

-32p +56

Step-by-step explanation:

distribute the 8 to everything in the parenthesis

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I need help plss help

Rashid [163]

Answer:

Step-by-step explanation:

4/5 = 8/10

1/2 = 5/10

+______

13/10 = 1 3/10

4 0

3 years ago

Read 2 more answers

A normally distributed population has a mean of 250 pounds

Dima020 [189]

Answer: 0.9746

Step-by-step explanation:

Given : A normally distributed population has a mean of 250 pounds and a standard deviation of 10 pounds.

i.e. $\mu=250$ $\sigma=10$

Sample size : n= 20

Let $\overline{x}$ sample mean values.

Then, the probability that this sample will have a mean value between 245 and 255 be

$P(245$

Hence , the probability that this sample will have a mean value between 245 and 255 is 0.9746 .

6 0

3 years ago

A piece of PVC material weighs 0.063 pounds per cubic inch. What's the weight of a 36-inch piece of PVC pipe with an outside dia

nalin [4]

The weight of a 36-inch piece of PVC pipe is 0.20 pounds

<h3>How to determine the weight of a 36-inch piece of PVC pipe?</h3>

The given parameters about the 36-inch piece of PVC pipe are

Height, h = 36 inches

Outside diameter, D = 0.82 inches

Inside diameter, d= 0.75 inches

The volume of the PVC pipe is then calculated as:

V = πh(D/2)^2 - πh(d/2)^2

Substitute the known parameters in the above equation

V = 3.14 * 36 * (0.82/2)^2 - 3.14 * 36 * (0.75/2)^2

Evaluate the quotients

V = 3.14 * 36 * 0.41^2 - 3.14 * 36 * 0.375^2

Evaluate the exponents

V = 3.14 * 36 * 0.1681 - 3.14 * 36 * 0.140625

Evaluate the products

V = 19.002024 - 15.89625

Evaluate the difference

V = 3.105774 cubic inches

From the question, we have:

Weight = 0.063 pounds per cubic inch

So, the total weight is

Total weight = 3.105774 cubic inches * 0.063 pounds per cubic inch

Evaluate the product

Total weight = 0.195663762 pounds

Approximate

Total weight = 0.20 pounds

Hence, the weight of a 36-inch piece of PVC pipe is 0.20 pounds

Read more about volume at:

brainly.com/question/1972490

#SPJ1

5 0

1 year ago

The corner candy store had 6 boxes with 30 packages of gum in each in 3 days they had 46 packages left write an equation that th

Alenkasestr [34]

(6×30)×3 is the answer to this equation please reward brainlest

8 0

4 years ago

The weights of ice cream cartons are normally distributed with a mean weight of 8 ounces and a standard deviation of 0.4 ounce.

Alla [95]

Answer:

a) 0.373 probability that a randomly selected carton has a weight greater than 8.13 ounces

b) 0.097 probability that mean weight of 16 randomly selected carton is greater than 8.13 ounces

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8 ounces

Standard Deviation, σ = 0.4 ounce

We are given that the distribution of weights of ice cream cartons is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(weight greater than 8.13 ounces)

P(x > 8.13)

$P( x > 8.13) = P( z > \displaystyle\frac{8.13 - 8}{0.4}) = P(z > 0.325)$

$= 1 - P(z \leq 0.325)$

Calculation the value from standard normal z table, we have,

$P(x > 610) = 1 - 0.627 = 0.373 = 37.3\%$

b) P(weight of 16 randomly selected cartons is greater than 8.13 ounces)

P(x > 8.13)

$P( x > 8.13) = P( z > \displaystyle\frac{8.13 - 8}{\frac{0.4}{\sqrt{16}}}) = P(z > 1.3)$

$= 1 - P(z \leq 1.3)$

Calculation the value from standard normal z table, we have,

$P(x > 8.13) = 1 - 0.903 = 0.097 = 9.7\%$

5 0

3 years ago