Solution :
Given :
ABCD is a quadrilateral.
Angle ADC = 90 degree
Angle DCB = 120 degree
Now angle DAB = 70 degree (alternate angles)
We know that the interior angles of a quadrilateral is 360 degrees.
So,
∠ DAB + ∠ ABC + ∠ BCD + ∠ CDA = 360°
70° + ∠ ABC + 120° + 90 ° = 360°
∠ ABC = 360° - (70° + 120° + 90°)
∠ ABC = 360° - 280°
∠ ABC = 80°
Now ∠ x = 180° - ∠ ABC (Line AB extended is 180° )
= 180° - 80°
= 100°
Hence proved.
Specify how many additional hours did she work
#1
Write in distributive form
Place value of 4 is 10
#2
Here
32 is greatest
#3
15<26<37<52
#4
Any number multiplied by 0 yeilds 0
#5
Cost:-
Answer: Quadrant III
Step-by-step explanation:
The slope is negative and the y-intercept is positive.
This means that it is impossible for both x and y to be negative, and thus it does not pass through <u>Quadrant III</u>
Answer:
B
Step-by-step explanation:
3m+3.5=-2m+2.5
5m=-1
m=-1/5
