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3 years ago

Need help with these

Mathematics

1 answer:

ella [17]3 years ago

4 0

Answer:

C
Not clear
A
A
C

Step-by-step explanation:

1) 2x + 246 = 360° (Vertically opposite and angle at a point)

2x = 360 - 246

2x = 114°

x = 114 / 2

x = 57°

3) Since <ABD is a right angle (i.e its sum is 90°)

<CBD = 90° - 75° = 15°

5) <1 = <2 (Vertically opposite angles are equal)

12x + 3 = 10x + 15

12x - 10x = 15 - 3

2x = 12

x = 6

Therefore,

<2 = 10(6) + 15

<2 = 75°

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$\: \: \: \: \: \:$

$= \: \: \: \: r = 5$

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