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Svetradugi [14.3K]
2 years ago
15

Find the missing angle.

Mathematics
1 answer:
hammer [34]2 years ago
4 0

Answer:

Linear pair angle of 40 is

=180-40

=140

If, the two rays are parallel

Therefore, the two rays are parallel and the straight line is transversal

Therefore, (?) angle =140 corrosponding angle

Your answer is 140

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15. Before oil is added to a certain road surface material, the other ingredients are mixed. The mixture contains
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Answer:

sand = 3450 pounds

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Step-by-step explanation:

The mixture composition is :

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32% inch stones and

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The percent here is by mass of material used.

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Use the percent by weight for the two types of stones and calculate real values in pounds

Formula to apply is:

Mass percent = (mass of a material/ total mass of mixture) * 100

For 3/4 inch stones it will be:

0.45= \frac{x}{15000} *100\\\\0.45=\frac{x}{150} \\0.45*150=x\\x=6750

The 3/4 inch stones weigh 6750 pounds

The 1 inch stones will be

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The 1 inch stones weigh = 4800 pounds

Total for the two items : 4800+6750 =11550 pounds

The sand used weighs : 15000 - 11550 = 3450 pounds

8 0
3 years ago
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