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Andrew [12]
3 years ago
9

I need help pleaseee!!

Mathematics
2 answers:
Katyanochek1 [597]3 years ago
7 0

Answer:

Step-by-step explanation:

12 cm

Alika [10]3 years ago
3 0

Answer:

12 cm

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

(4+x) * 4 = 8^2

Distribute

16+4x = 64

Subtract 16

4x =48

Divide by 4

4x/4 = 48/4

x = 12

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Read 2 more answers
Which of these strategies would eliminate a variable in the system of equations ?
Mrrafil [7]

Answer:

B

Step-by-step explanation:

I believe the answer is B because if we multiply the top equation by 6, we get 48x + 30y = -42, and if we multiply the bottom equation by -5, we get

35x - 30y = 20. So now, if we add it all together, then the positive 30y and negative 30y cancel out aka it equals 0, and thus the variable y is gone, satisfying the requirement that the problem asks for ("Which of these strategies would eliminate a variable...").

I hope this helped, and if it's correct, I'd appreciate if you marked my answer as Brainliest :)

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