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Charra [1.4K]
1 year ago
11

Please please please help

Mathematics
1 answer:
Ludmilka [50]1 year ago
7 0

Answer:r=14°

Step-by-step explanation:

(5r-5)°+ (8r+3)°=180

(Sum of angles on a straight line =180°)

Collect like terms

5r+8r-5+3=180

13r-2=180

13r=180+2

13r=182

r=182/13

r=14°

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First we must simplify the expression:
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Then we factor the rational parts and cancel it out:
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Then we rationalize the expression:
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<span>Finally, the simplified expression by rationalizing the denominator is (C)\frac{4 \sqrt{15x} }{15x}.</span>
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Step-by-step explanation:

8 0
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