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blsea [12.9K]
2 years ago
5

If a school has 200 students, how many students would be left if 5/8 of them were on a field trip.

Mathematics
1 answer:
cricket20 [7]2 years ago
3 0

Answer:

75

Step-by-step explanation:

3/8 are left

3/8 x 100 = 75

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the demand for a product for the last six years has been 15, 15, 17, 18, 20, and 19. The manager wants to predict the demand for
Marta_Voda [28]

Answer and explanation:

Given : The demand for a product for the last six years has been 15, 15, 17, 18, 20, and 19. The manager wants to predict the demand for this time series using the following simple linear trend equation : tr_t = 12 + 2t

To find : What are the forecast errors for the 5th and 6th years?

Solution :

Data : 15, 15, 17, 18, 20, and 19.

The simple linear trend equation is given as, tr_t = 12 + 2t

For t = 5 years

tr_t = 12 + 2(5)

tr_t = 12 +10

tr_t = 22

Observed tr_t = 20

Predicted tr_t = 22

Forecast error = Observed – Predicted = 20 – 22 = -2

Absolute forecast error = |-2| = 2 .

For t = 6 years

tr_t = 12 + 2(6)

tr_t = 12 +12

tr_t = 24

Observed tr_t = 19

Predicted tr_t = 24

Forecast error = Observed – Predicted = 19 – 24 = -5

Absolute forecast error = |-5| = 5.

7 0
4 years ago
On a scale drawing, a helicopter is 2.3 feet long. The scale on the drawing shows a ratio of 1 foot to 10 feet. What is the actu
andrey2020 [161]

Answer:

The actual length of the helicopter is <u>23 feet</u>.

Step-by-step explanation:

Given:

On a scale drawing, a helicopter is 2.3 feet long.

The scale on the drawing shows a ratio of 1 foot to 10 feet.

Now, to find the actual length of the helicopter.

Let the actual length of helicopter be x.

On scale drawing length of helicopter = 2.3 feet.

The scale on the drawing shows a ratio = 1:10.

Now, as ratios are given so by setting proportion we solve it:

\frac{2.3}{x} =\frac{1}{10}

<em>By cross multiplying we get:</em>

⇒ 2.3\times 10=x

⇒ 23=x

⇒ x=23\ feet.

Therefore, the actual length of the helicopter is 23 feet.

8 0
4 years ago
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olga55 [171]
3.14*18/4= 14.13
14.1 is your answer
7 0
4 years ago
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The police department uses a formula to determine the speed at which a car was going when the driver applied the breaks, by meas
Alex777 [14]

Answer:

0.03 feet

Step-by-step explanation:

d = 0.03r² + r

When d = 0: 0.03r² + r = 0

r(0.03r + 1) = 0

∴ r = 0

When r = 0: d = 0.03 feet

7 0
3 years ago
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Answer;

a

Step-by-step explanation:

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3 years ago
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