Step-by-step explanation:
BCD = 180- 100 = 80
the opposite angles of a parallelogram are of equal measure
SO DAB = X = 80
The sum of all parallelogram angles = 360
360 - 160 = 200
200 equals the measure of angle ADC + ABC
ABC = ADC
200 = 2ABC
ABC = 100
ADB = DBC = 30
Y = 100 - 30 = 70
another way to find y is using the rule that says that the sum of the triangle ADB angles = 180
180 = 80 + 30 + y
y = 70
Answer:
0.08
Step-by-step explanation:
It is simplified to -1/15
Go to Cymath and type in the equation it will solve for you and it will show you the steps to it it’s very simple and very easy there’s also an app for it