SOLVE FOR X, GEOMETRY

Mathematics

1 answer:

frosja888 [35]3 years ago

8 0

Answer:

105

Step-by-step explanation:

By solving for the other triangles, we know that the angles of a triangle add up to be 180 degrees. The angle for the triangle on the left is 25 and for the triangle on the right is 50. So we have the measurements, 25, 50 and x for our middle triangle from which we can see x=105

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Answer:

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Step-by-step explanation:

Let the number of mL of 90% mixture = x

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780mL × 15% + x mL × 90% = (780mL + x) 30%

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Collect like terms

0.9x - 0.3x = 234 - 117

0.6x = 117

x = 117/0.6

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