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3 years ago

Write two inequalities to compare -2 and -18

Mathematics

1 answer:

QveST [7]3 years ago

8 0

Step-by-step explanation:

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If a plan can travel 470 miles per hour with the wind and 430 miles per hour against the wind find the speed of the wind and the

hjlf

470-390=80
80/2=40
The wind is 40 mph
What does find the speed of the wind in still air mean? The wind is not still air!

Do you mean find the speed of the wind or find the speed of the plane in still air? Try reading your post before clicking submit.
470-40=430
390+40=430
The plane in still air goes 430 mph

6 0

3 years ago

Read 2 more answers

inter class of 33 out of 5 children have a dog all the others children have cats how many children have cats

lesya692 [45]

Well, if there are 33 children in class, and 5 children have dogs, then to find out how many have cats, you subtract 5 from 33. It looks like this:

33-5 = 28

Therefore, 28 students have cats.

5 0

3 years ago

Read 2 more answers

32 students were asked which of the sciences they enjoy the most. 4 of the boys said they enjoy Physics. The ratio between boys

stepladder [879]

Answer:

Step-by-step explanation: Total number of students = 32

Total number of ratio of students that enjoy Physics, Biology and Chemistry = 5 + 5 + 6 = 16

Number of boys that enjoy the three subjects = 16

Number of girls that enjoy the three subjects = 16

Number of students that enjoy Physics = 5/16 X 32 = 10

Number of students that enjoy Biology = 5/16 X 32 = 10

Number of students that enjoy Chemistry = 6/16 X 32 = 12

If number of boys that enjoy Physics = 4

∴ Number of girls that enjoy Physics = 10 - 4 = 6

The probability of girls that enjoy Chemistry = 0.25 = 1/4

∴ The number of girls that enjoy Chemistry = 1/4 X 12 = 3

Hence, the number of boys that enjoy Chemistry = 12 - 3 = 9

Number of boys that enjoy Biology = 9 + 4 - 10 = 13 - 10 = 3

∴ Number of girls that enjoy Biology = 10 - 3 = 7

5 0

2 years ago

Find sin60 A.1/2 B.2/2 C.3/2

ki77a [65]

Answer: $\frac{\sqrt{3} }{2}$

Step-by-step explanation:

To find sin(60), you need to know the unit circle. Sin(60) is the same as sin(π/3). On the unit circle, sin(π/3) is √3/2. We know this because the coordinates are (cos, sin). Sin is the y coordinate.

7 0

3 years ago

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If a hexagonal prism has a volume of 539 cubic meters and is 16 meters tall, find the area of the hexagonal base

Pavlova-9 [17]

9514 1404 393

Answer:

33 11/16 m² = 33.6875 m²

Step-by-step explanation:

The volume of a prism is given by ...

V = Bh

where B is the area of the base, and h is the height. Solving for B, we find ...

B = V/h

B = (539 m³)/(16 m) = 33 11/16 m² = 33.6875 m²

8 0

3 years ago