MATHEMATICS COLLEGE

A classroom board is 36 inches wide and 24 inches tall. Cherylis putting ribbon along the outside edge of the board. How
many inches of ribbon will she need?
24 inches
36 inches
A 156 inches B 120 inches
C90 inches
D 60 inches

Answers

Answer 1
Answer:

The amount of ribbon needed is 120 inches

what is perimeter?

The perimeter formula for a rectangle states that P = (L + W) × 2, where P represents perimeter, L represents length, and W represents width.

Given:

length = 24 inches

width = 36 inches

So, amount of ribbon needed

=2(36+ 24)

=2(60)

=120 inches

Hence, the amount of ribbon needed is 120 inches

Learn more about perimeter here:

brainly.com/question/27591380

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Answer 2
Answer:

Answer:

option B

Step-by-step explanation:

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Answers

Answer:

The answer is 2

Step-by-step explanation:

Use a calculator.

If n is a positive integer, which of following statement is individually sufficient to prove whether 289 is a factor of n?a. The greatest common divisor of n and 344 is 86. b. Least common multiple of n and 272 is 4624. c. The least common multiple of n and 289 is 289n.

Answers

Answer:

The statement b) is individually sufficient to prove than 289 is a factor of n

Step-by-step explanation:

The least common multiple of n and 272 is the smallest number that is a multiple of n and a multiple of 272. Therefore:

272 x X = 4624 ⇒ X = 17 but 272 = 17 · 16 and 289 = 17 · 17

Therefore 17·17 must be a factor of n. That means 289 is a factor of n

Solve for the value of v.

Answers

Answer:

6x9 =54

54-4 =50

v =9

Answer:

v =9

Step-by-step explanation:

Suppose human weights are normally distributed with mean 175 and standard deviation 36 pounds. A helicopter is evacuating people from a building surrounded by zombies, and this helicopter can fit 9 people and with a maximum weight of 1800 pounds, i.e., an average of 200 pounds per person. If 9 people are randomly chosen to be loaded on this helicopter, what is the probability that it can safely lift off (i.e., the average weight of a person in the helicopter is less than 200)?

Answers

Answer:

P(\bar X <200)=P(Z<(200-175)/((36)/(√(9)))=2.083)

And using a calculator, excel or the normal standard table we have that:

P(Z<2.083)=0.981

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

X \sim N(175,36)  

Where \mu=175 and \sigma=36

They select a sample size of n=9 people.The distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, (\sigma)/(√(n)))

And we want to find this probability:

P(\bar X <200)

In order to the helicopter can safely lift off. We can use the z score formula given by:

z = (\bar X -\mu)/((\sigma)/(√(n)))

P(\bar X <200)=P(Z<(200-175)/((36)/(√(9)))=2.083)

And using a calculator, excel or the normal standard table we have that:

P(Z<2.083)=0.981

EP-21 What is a requirement for fire extinguishers on a boat?Must be filled with water
Must be red or orange in color
Must be Coast Guard approved
Must be permanently mounted

Answers

Answer:

Must be Coast Guard approved

Step-by-step explanation:

--The use Coast Guard has a fire extinguisher requirement based on the boat size.

-The fire extinguisher on board has to be approved by the US Coast guard for protection of the engine compartment.

Answer:

Must be maintained in a fully charged usable condition.

How many triangles can you count?

​

Answers

Answer:

the answer is 12

Step-by-step explanation:

some of them is not triangles tho

Answer:

6 triangles

Step-by-step explanation:
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