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3 years ago

How to find the area of a circle when given the circumference?

Mathematics

1 answer:

Art [367]3 years ago

4 0

1. C = 2 π r

2. r = C / (2 π)

3. A = π [C / (2π)] 2

4. A = C2 / (4 π)

I hope this helps you out because I only write them by equation rather than in words.

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Which term is defined as "two noncollinear rays that share a common endpoint"?

ladessa [460]

Non colinear meas that they are not in the same line, they point differnt directions

rays means that they start at a certain point and travel forever in other direction

share common endpoint means their starting points are joined

looks like this:

seems to be an angle in my opinion

8 0

3 years ago

WILL GIVE A BRAINLIEST IF UR 100% CORRECT!! PLEASE HELP!!

harina [27]

2x^2y         9xy^3
---------- * ---------------
   3x 4y

   3x^2y^3
= ---------------
   2

answer

B.
3x^2 y^3/2

3 0

3 years ago

Who is going to help me with this math problem, I Need help.

nika2105 [10]

Answer:

Step-by-step explanation:

a + 8s + 10s = a + 18s

Like terms have same variable with same power. Combine like terms.

4 0

3 years ago

A bag contains green marbles and blue marbles, 55 in total. The number of green marbles is 7 more than 5 times the number of blu

MrRissso [65]

Answer:

Step-by-step explanation:

Total marbles in bag= 55

Given that

The number of green marbles is 7 more than 5 times the number of blue marbles.

Let green marble be x

And blue marble be y

Therefore,

Green=seven more than 5 times blue

Green=7+5timesblue

x=7+5y. Equation 1

Also the sum of the marbles is 55

x+y=55. Equation 2

Substitute equation 1 into 2

7+5y+y=55

7+6y=55

6y=55-7

6y=48

y=48/6

y=8

From equation 2

x+y=55

Then, x=55-y

x=55-8

x=47

Then, green marbles is 47.

Also, Blue marbles is 8

7 0

4 years ago

1. The scale drawing below is the base of an office building. The sale of the drawing is 1 unit : 6 feet. Redraw the scale drawi

baherus [9]

11)

keeping in mind that, there are 3 feet in 1 yard, therefore, in 4 yards there are 4(3) feet or 12 feet.

now, 12 feet is twice as much as 6 feet. If the original grid, had each unit length to be 6 feet, that means each square was a 6x6 square. That means the new adjusted grid, will be twice as many feet per each unit, namely a 12 : 1. Check the first picture below.

12)

check the second picture below, that's the 30-60-90 rule.

now, if one angle in the triangle is 30°, and another is 60°, the last one must be a 90° angle, so the triangle is a 30-60-90 triangle, and thus the 30-60-90 rule applies, with the ratios as you see in the picture.

so, if any of the sides has a value of 6, that will be a constraint to the other sides, since the other sides must be at a ratio of 6.

because of those ratios constraints, you can only make one unique triangle, if one side is 6, the others cannot fluctuate in length, they must be at a ratio of 6.

4 0

3 years ago