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DerKrebs [107]
3 years ago
15

What is the measurement of angle a?

Mathematics
1 answer:
Illusion [34]3 years ago
6 0
Assuming we have parallel lines, we can solve for x.
Since a = 3x - 10 (vertically opposite angles are equal),
3x - 10 = 2x + 15 (alternate angles are equal)
x = 25

Hence, angle a = 3(25) - 10 = 65°
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AD is congruent to itself and happens to be a part of two triangles, ABD and ACD.

So by the side-side-side postulate, the triangles ABD and ACD are congruent, which means corresponding parts (sides and angles) are congruent to each other. And because triangles ABD and ACD are congruent, the "total" triangle ABC is isosceles, and AD must be perpendicular to BC. This last observation means that x=90.

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Answer:

Everyone will get \frac{35}{86} amount of cakes.

Step-by-step explanation:

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We need to find the fraction of cakes everyone will get.

So to find the the fraction of cakes everyone will get can be calculated by dividing Number of Cakes Josh buys with Number of students he want to share with.

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Now Substituting the values we get;

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