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xenn [34]
2 years ago
9

Find the perimeter of the polygon. a. 25 cm b. 20 cm C. 30 cm d. 28 cm

Mathematics
2 answers:
Anvisha [2.4K]2 years ago
6 0

25 hope that helps you out

ddd [48]2 years ago
4 0
The answer is (a. 25cm)
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4x-3=2x+5-3 whats the answer
ivolga24 [154]
The answer is 5/2
4x - 3 = 2x + 5 - 3 \\ 4x - 2x = 3 + 5 - 3 \\ 2x = 5 \\  x =  \frac{5}{2}



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The answer is A

Step-by-step explanation:

8 0
3 years ago
Pleasee help mee<br><br>12sin(x)-5cos(x)=6,5​
abruzzese [7]

We turn -5,12 into polar coordinates.  It's a Pythagorean Triple so

r = 13   Ф=arctan(-12/5) + 180°   ( in the second quadrant )

so -5 = 13 cos Ф, 12 = 13 sin Ф

12 sin x - 5 cos x = 6.5

13 sinФ sin x + 13 cos Ф cos x = 6.5  

13 cos(x - Ф) = 6.5

cos(x - Ф) = 1/2

cos(x - Ф) = cos 60°

x - Ф = ± 60° + 360° k     integer k

x = Ф ± 60° + 360° k  

x = 180° + arctan(-12/5) ± 60° + 360° k  

That's the exact answer;

x ≈  180° - 67.38° ± 60° + 360° k  

x ≈  122.62° ± 60° + 360° k  

x ≈  { 62.62°, 182.62°} + 360° k,  integer k

3 0
2 years ago
Yeah I need help…..<br> Do your work soldiers
Aloiza [94]

I can’t, sir! I cannot leave my post to help with your math problems, over!

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What is the prime factorization of 45/72
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5/8 I believe. You can divide both by 9
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3 years ago
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