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jeyben [28]
3 years ago
7

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Mathematics
1 answer:
Fudgin [204]3 years ago
5 0

Answer:

Re :3

Step-by-step explanation:

REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

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The diagram shows a sector of a circle radius 10cm. Find the perimeter of the sector, giving your answer correct to 1 decimal pl
qwelly [4]
<h2>Explanation:</h2><h2></h2>

Hello! Remember you have to write complete questions in order to get good and exact answers. Anyway, I'll help you either way. A sector is a region of a circle between two radii. Let's assume the sector as:

s=25\pi cm^2

Then, we can find the central angle by the following equation:

s=\frac{\theta}{360}\times\pi r^{2} \\ \\ r=10cm \\ \\ s=25\pi cm^2 \\ \\ \\ So: \\ \\ \frac{25\pi(360)}{10^2\pi}=\theta \\ \\ \theta = 90^{\circ}

But:

90^{\circ}=\frac{\pi}{2}

Then:

C:Perimeter \ of \ sector \\ \\ \\ C=\theta r \\ \\ C=\frac{\pi}{2}(10) \\ \\ C=5\pi cm \approx \boxed{15.7cm}

6 0
4 years ago
Simplify the ratio 25 :15
Sedbober [7]

Answer:

5/3

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 25 and 15 is 5

Divide both the numerator and denominator by the GCD

25 ÷ 5

15 ÷ 5

Reduced fraction:  

5

3

Therefore, 25/15 simplified to lowest terms is 5/3.

brailiest pls hope it helps

4 0
2 years ago
If B is the midpoint of AC, and AC = 8x-20, find BC
dybincka [34]

Answer:

AC=-160

BC is the midpoint of AC meaning half of AC

-160/2=-80

4 0
4 years ago
7. Find the value of x in the figure below.<br> (8x + 5)<br> (13x - 14)<br> A. 7<br> D. 10
Lina20 [59]

Answer:

104x^2-47x-70

Step-by-step explanation:

(8x+5)(13x-14)

104x^2+65x-112x-70

104x^2-47x-70

5 0
3 years ago
Help ASAP I need this done
andreev551 [17]

Answer:

I need to see the full equation in order to try and help

6 0
3 years ago
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