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Y_Kistochka [10]
3 years ago
14

Find the value of r.

Mathematics
1 answer:
fgiga [73]3 years ago
6 0

Answer:

r = 10.5

Step-by-step explanation:

using the Pythagorean theorem:

(7 + r)² = 14² + r²

49 + 14r + r² = 196 + r²

subtract r² from both sides of the equation:

14r + 49 = 196

subtract 49 from both sides:

14r  = 147

divide both sides by 14:

r = 10.5

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2 years ago
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8 0
3 years ago
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What is the area of a triangle whose vertices are R(−4,2) R ( − 4 , 2 ) , S(1,2) S ( 1 , 2 ) , and T(−5,−4)
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