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babymother [125]

3 years ago

7

four red boxes and two black boxes cost $40. Five red boxes cost $20. All red boxes cost the same. All black boxes cost the same

. What is the ratio of the cost of a red box to the cost of a black box.

1 answer:

exis [7]3 years ago

8 0

The ratio of red to black is 1:3

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4. Find the value of x.

oksano4ka [1.4K]

Answer:

x = 50°

Step-by-step explanation:

The sum of the measures of the angles of a quadrilateral is 360°

360 - 40 - 80 - 110 = 130

130 is the measure of the quad that is adjacent to the angle of x° and is supplementary to that angle also.

Therefore, x = 180 - 130 = 50

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The ancient Egyptians had to be skilled mathematicians to build their pyramids correctly. If they built a pyramid like the one b

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Answer:

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Solution:

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