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loris [4]
2 years ago
10

If an airplane in a 2 in : 5 ft scale drawing is 10 inches long , how long is the actual airplane?

Mathematics
2 answers:
erica [24]2 years ago
6 0

Answer:

<em>The actual airplane is 25 ft long</em>

Step-by-step explanation:

<u>Scaling</u>

Objects can be represented in a reduced or augmented size by using scaling which is basically multiplying or dividing by a constant factor.

The scale used to draw an airplane is:

2 in = 5 ft

The scale factor is, then:

5 ft / 2 in = 2.5 ft/in

The actual airplane's length can be obtained by multiplying the scaled size by the scale factor:

10 * 2.5 = 25 ft

The actual airplane is 25 ft long

Alex73 [517]2 years ago
5 0

Answer:

25?

Step-by-step explanation:

1=2.5

2 = 5

3=7.5

10=25

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4 0
3 years ago
Y=-2х - 4 y=x - 5 how many solutions does this have​
spayn [35]

Answer:

one solution

Step-by-step explanation:

-2x - 4 = x - 5

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x = 1/3

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y = 1/3 - 15/3

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5 0
3 years ago
Which expressions are equivalent to 12x - 6? ​
iren2701 [21]
<h3>Answer</h3>

B and E

<h3>Explanation</h3>

A) It's wrong because

- 6 \times (2x - 1) =  - 12x + 6

B) It's right because

6 \times (2x - 1) = 12x - 6

C) It's wrong because

6x \times (2 - 1) = 6x \times 1 = 6x

D) It's wrong because

- 6x \times (2x - 1) =  - 12 {x}^{2} + 6

E) It's right because

- 6 \times ( - 2x + 1) = 12x - 6

F) It's wrong because

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8 0
3 years ago
Surveys conducted in American high schools concluded that 90% of the students in a sample of 400 students had more than one acti
kenny6666 [7]
The sample proportion has an approximately normal distribution, with the mean being the population mean and the standard deviation (i.e. the standard error of the sampling proportion) equal to 

SE = sqrt(p*q/n) where p is the population proportion q is 1-p, and n is the sample size. 

<span>(Typically, for a confkdence interval, the sample proportion and its complement are substituted for p and q.) </span>

The margin of error will be Zc*SE, where Zc is the critical value of Z for the level of confidence required. The confidence interval, then, will be the sample proportion, plus or minus the margin of error. 

For a 90% confidence interval, Zc is 1.645. 

<span>So the margin of error is 1.645 * sqrt(.9*.1/400), roughly .025. So your confidence interval would be around [.875, .925] 


The best and most correct answer among the choices provided by your question is the second choice or letter C which is 3%.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.</span>
4 0
2 years ago
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Step-by-step explanation:

4 0
3 years ago
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