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Tema [17]
3 years ago
15

А

Mathematics
1 answer:
AveGali [126]3 years ago
8 0

Answer:

AB = 12 cm

Step-by-step explanation:

AB/BC = XY/BY

From the above question:

AB = ??

BC = 9cm

XY = 4cm

BY = 3 cm

AB/9 = 4/3

Cross Multiply

AB × 3 = 9 × 4

AB = 9 × 4/3

AB = 12 cm

Therefore, Length AB = 12cm

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See diagram
To find X, I know the angles will equal 180
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Subtract 110 from both sides to isolate X
5x = 70, solve for X, divide both sides by 5
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Do the same for Y
We know the triangle will equal 180
So (5x) is (5x14= 70) and the other angle is 40.
180-40-70 = 70 for the unknown angle in the triangle.
We know the angles in the Y part of the question will equal 180 so
70 + 2y = 180, subtract 70 from both sides to isolate Y
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