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3 years ago

Solve this inequality for x 81 -1 1/5r <55

2 answers:

7 0

$81-1\dfrac{1}{5}r < 55\qquad|\text{subtract 81 from both sides}\\\\-\dfrac{1\cdot5+1}{5}r < -26\qquad|\text{change the signs}\\\\\dfrac{6}{5}r > 26\qquad|\text{multiply both sides by 5}\\\\6r > 130\qquad|\text{divide both sides by 6}\\\\r > \dfrac{130}{6}\\\\r > \dfrac{65}{3}\to r > 21\dfrac{2}{3}$

Jobisdone [24]3 years ago

6 0

The answer would be d thats how it was on my test

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Step-by-step explanation:

This requires that you use a proportion.

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The small triangle's sides are in proportion to the large triangles sides.

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statuscvo [17]

Answer:

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