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2 years ago

Please answer quickly THIS IS FOR A TEST

Mathematics

1 answer:

ivolga24 [154]2 years ago

5 0

Answer:

I think the answer should be 54 pi centimeters but I can't see all the options, area of a circle is pi r^2 so if the diameter is 18, diameter = 2r so the radius is 9. pi 9^2 is 81 pi, then the same for the 3 unshaded ones and just subtract the area of the 3 white circles (27 pi) out of 81 pi.

Step-by-step explanation:

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I need help please lol

butalik [34]

For the ones that are not filled out.

1.150

2.150

3.25

4.5

5.35

4 0

2 years ago

The first part is actually answered I just need to take a picture of the solid figure so Part B can be answered. If you cannot s

Romashka [77]

Answer:

Step-by-step explanation:

Area = 35*100*2 + 50*100*2 + 50*35*2

= 7000 + 10000 + 3500

= 20500 cm2

5 0

2 years ago

A stereo system is being installed in a room with a rectangular floor measuring 19 feet by 12 feet and a 7-foot ceiling. The st

krek1111 [17]

Answer:

The shortest length of wire that can be used is 29.47 ft.

Step-by-step explanation:

To solve this problem we can follow the following steps:

1) We have the dimensions of the floor of the room. The shortest distance between its opposite corners is the diagonal. We calculate the diagonal using the Pythagorean theorem.

$L = \sqrt{12^2 + 19^2}\\\\L= 22.47\ ft$

2) Since the speaker is on the ceiling, and the amplifier is on the floor, then 7 more feet of wire is needed to reach the speaker. <em>Observe the attached image</em>

3) The final distance (d) is:

$d = 22.47\ ft + 7\ ft\\\\d = 29.47\ ft$

6 0

2 years ago

If your weight is 150 pounds and your mass is 15.3 kilograms, what would those values be if you were on the moon? The gravitatio

natulia [17]

Weight = mass * g where g = gravitational force

so a weight of 150 pounds would be 150 / 6 = 25 on the moon.
The mass would be the same as on earth.

3 0

3 years ago

Please explain how you got your answer (:

melisa1 [442]

I used math

anyway
remember you can do anything to an equation as long as you do it to both sides

so

4n+2 and 1/2=2n+5
minus 2n both sides
4n-2n+2 and 1/2=2n-2n+5
2n+2 and 1/2=0+5
2n+2 and 1/2=5
minus 2 and 1/2 both sides
2n=2 and 1/2
divide both sides by 2
I mean times both sides by 1/2
n=1 and 1/4

answer is C

6 0

3 years ago