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BlackZzzverrR [31]
3 years ago
6

Find the area of this quarter circle. r=6

Mathematics
1 answer:
boyakko [2]3 years ago
5 0

28.3

Step-by-step explanation:

imagine it's a complete circle, and find its are

pi × r^2

which is 36pi (keep ur answer in pi for now)

because it's a quarter of a circle ( 1/4) we decide the are of the full circle by 4 to get the quarter's area

36pi ÷4 = 28.27433388 which is about 28.3 ( as u see we kept it in pi for a more accurate number)

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What are the two binomial factors for x2 – 25?
Viktor [21]

Answer:

x^2 -25 = (x-5)(x+5)

Any expression of the form a^2 - b^2 = (a-b)(a+b)

3 0
2 years ago
What is x? I tried it but I don’t think I did it right.
sattari [20]

Answer:

x = 4

Step-by-step explanation:

When a tangent and a secant are drawn from an external point to a circle.

Then the product of the external part of the secant and the entire secant and the square of the measure of the tangent are equal, hence

x(x + 5) = 6²

x² + 5x = 36 ( subtract 36 from both sides )

x² + 5x - 36 = 0 ← in standard form

(x + 9)(x - 4) = 0 ← in factored form

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x + 9 = 0 ⇒ x = - 9

x - 4 = 0 ⇒ x = 4

However, x > 0 ⇒ x = 4

8 0
3 years ago
A youth group is setting up camp. Rain is predicted, so the campers decide to build a fly, or rain cover, over their tent. The f
pshichka [43]
The image for this is attached for reference. This problem can be used by the Pythagorean equation.  To make solving convenient, let us see only one part of the tent. Hence, one side is half of the tend width which is 16/2ft. Height is 12 ft. The unknown side is the hypotenuse. The answer is: 
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7 0
3 years ago
4
user100 [1]
The answer is 15 I’m pretty sure
6 0
2 years ago
HELP PLEASE! (Look at the picture!!!!)
Marianna [84]

Answer:

8

Step-by-step explanation:

The radius is part of a 3-4-5 special right triangle.

The diameter is two times the radius, so 4*2=

<em>I hope this helps! :)</em>

7 0
2 years ago
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