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3 years ago

#20 There are 75 students.

Mathematics

2 answers:

agasfer [191]3 years ago

8 0

Answer:

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:

when the angle is 30 degrees

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

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

$d1 = \frac{6000}{0.577}$

d1 = 10392.3 meters

when the angle is 60 degrees

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

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

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

d2 = 3464.1 meters

distance travelled by aircraft in 1 min is

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

Now converting to m/sec

=> $\frac{6928.2}{60}$

=>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

8 0

2 years ago

Read 2 more answers

Diane has $334 in her checking account. She writes a check for $112, makes a deposit of $100, and then writes another check for

Dmitrij [34]

Answer:

334 - 112 + 100 - 98

Step-by-step explanation:

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2 years ago

Find the lateral surface area.

sveta [45]

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 ...

... area = (60 yd)(10 yd) + (20 yd)(15 yd)

... = 600 yd² +300 yd²

... = 900 yd²

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3 years ago