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Irina18 [472]
3 years ago
15

#20 There are 75 students.

Mathematics
2 answers:
agasfer [191]3 years ago
8 0

Answer:

15

Step-by-step explanation:

 1.  Multiply the number by the percent (e.g. 87 * 68 = 5916)

 2.  Divide the answer by 100 (Move decimal point two places to the left) (e.g. 5916/100 = 59.16)

 3. Round to the desired precision (e.g. 59.16 rounded to the nearest whole number = 59)

lianna [129]3 years ago
6 0

Answer:

i belief the answer is 15

Step-by-step explanation:

cause 20 percent of 75 is fifteen

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A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an
liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute  = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

<u>when the angle is 30 degrees</u>

tan(30) = \frac{6000}{d1}

d1   = \frac{6000}{tan(30)}

d1 = \frac{6000}{0.577}

d1 = 10392.3 meters

<u>when the angle is 60 degrees</u>

tan(60) = \frac{6000}{d2}

d2  = \frac{6000}{tan(60)}

d2  = \frac{6000}{1.732}\\

d2 = 3464.1 meters

<u>distance travelled by aircraft in 1 min is  </u>

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

<u>Now converting to m/sec</u>

=>\frac{6928.2}{60}

=>115.47 m/sec

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3 years ago
Multiply (1/3√x-3/2√y)^2
lisov135 [29]

Answer: multiply (1/3√x-3/2√y)^2

Step-by-step explanation: Answer: 1/2 of 1/2 is 1/4.

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1 year ago
PLEASE HELP! I REALLY NEED IT
wolverine [178]
I can’t really help you I’m sorry I don’t really know the answer but I do need points thank you byeAdios
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Answer:

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Step-by-step explanation:

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Answer:

900 yd²

Step-by-step explanation:

You can draw the pattern that would need to be folded to make the figure, then find the area of that pattern (or "net"). It consists of a rectangle 10 yards wide and 60 yards long, together with another that is 20 yards long and 15 yards wide. The total area is the sum of these ...

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