The angle to the left of angle 1 is 70, so angle 1 is equal to 180 - 70 - 70 which is 40,
Answer:
2x/z+y
Step-by-step explanation:
Answer:
Angle B is 54º.
Step-by-step explanation:
First, find <em>x</em>. Since angle A and angle B are supplementary angles, they add up to 180º.
(7<em>x</em> + 7)º + (4<em>x</em> - 14)º = 180º.
11<em>x</em> - 7 = 180
11x = 187
<em>x</em> = 17.
Now, substitute 17 for <em>x</em> in angle B's equation, (4<em>x</em> - 14).
4(17) - 14
= 68 - 14
= 54º
Answer:
The answer is option A.
∆BDC is a right angled triangle
Angles in a triangle add up to 180°
That's
z + 35 + 90 = 180°
z = 180 - 35 - 90
z = 55°
Alternate angles are equal
Angle DBC = Angle BDA
That's
35 = 7y
Divide both sides by 7
y = 5
y = 5 z = 55
Hope this helps you