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Lady bird [3.3K]
3 years ago
8

On a set of blueprints, the scale is 1/2 inch = 4 feet. Find the actual length of a room that measures 2.8 inches on the bluepri

nt. Show work.
Mathematics
1 answer:
bulgar [2K]3 years ago
6 0

Answer: The actual length of a room that measures 2.8 inches on the blueprint will be 22.4 feet.

Step-by-step explanation:

We are given that ,

On a set of blueprints, the scale is \dfrac{1}{2}\text{inch= 4 feet}

Multiply 2 both sides , we get

Then, \text{1 inch = }2\times4=8\text{ feet}

\Rightarrow\ \text{2.8 inch = }2.8\times 8\text{ feet}

\Rightarrow\ \text{2.8 inch = }22.4\text{ feet}

Then, the actual length of a room that measures 2.8 inches on the blueprint.  will be 22.4 feet.

Hence, the correct answer is 22.4 feet.

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MissTica

Answer:

area = 24 cm²

Step-by-step explanation:

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3 years ago
Let X denote a random variable which corresponds to the number of players in a team who get injured during a game. If we assume
Feliz [49]

Answer:

(a)

The values of X can be 0, 1, 2 , ..., 10 . So, X is a discrete random variable.

(b)

The distribution of X is Binomial distribution with the parameters n = 10 and p = 0.2

(c)

Probability that no one or one person will be injured = P(X = 0) + P(X = 1)

= 10C0 * 0.20 * (1 - 0.2)10-0 + 10C1 * 0.21 * (1 - 0.2)10-1

= 0.810 + 10 * 0.2 * 0.89

= 0.3758096

(d)

Average value of X = np

Average value of X = 10 * 0.2 = 2

(e)

Variance of X = np(1-p)

Variance of X = 10 * 0.2 * (1 - 0.2) = 1.6

(f)

Number of ways in which 2 people gets injured = 10C2 = 10! / ((10-2)! 2!) = (10 * 9) / (2 * 1) = 45

Assume the best player got injures, number of ways in which one people out of remaining 9 people gets injured = 9C1

= 9! / ((9-1)! 1!)

= 9

Probability that the best player got injured = Number of ways in which 1 people gets out of 9 and best person gets injured / Number of ways in which 2 people gets injured

= 9 / 45

= 0.2

4 0
3 years ago
A number, y, is equal to the difference of a larger number and 3. The same number is one-third of the sum of the larger number a
rosijanka [135]

Answer:

Step-by-step explanation:

It's 21 lol

4 0
3 years ago
Whats the answers can anyone answer this question please​
topjm [15]

Answer:

1. B

2. A

Step-by-step explanation:

1.

10^{-2} means that you move the decimal back two times

B is the only option that represents that correctly.

2.

5 * 10^{4} = 50000

2.5 * 10^{2} = 250

50000/250 = 200

Out of the options, A is the only option in which the equation also equals 200.

4 0
2 years ago
Wei has $150.00 to make a garland using 60-cent balloons. He wants to purchase 100 blue balloons and some number of white balloo
blsea [12.9K]

Answer:

He can purchase 300 white baloons.

Step-by-step explanation:

150$ is 15000 cents

15000 = 60b + 30w

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15000 = 60*100 + 30w

15000 - 60*100 = 30w

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number of white baloons is 300

3 0
3 years ago
Read 2 more answers
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