Answer:
As shown in picture:
BC = BA => triangle ABC is isosceles => angle BCA = angle BAC
DC = DA => triangle ADC is isosceles => angle DCA = angle DAC
=> C = BCA + DCA = BAC + DAC = A
Other wise, the sum of 4 internal angles of a quadrilateral is equal to 360 deg.
=> C + A = 360 - 100 - 45 = 215
=> C = A = 215/2 = 107.5 deg
Hope this helps!
:)
Answer: 2-0.83x=0.375
Step-by-step explanation:
2-5/6x=3/8
You turn the 5/6 into 0.83
And you can also turn 3/8 into 0.375
And boom u rewrite it
2-0.83x=0.375
Answer:
Step-by-step explanation:
y - 1 + y = 4
2y - 1 = 4
2y = 5
y = 5/2
x = 5/2 - 1
x = 5/2 - 2/2
x = 3/2
(3/2, 5/2)
Answer:
just break it down and you will get it! :D
Step-by-step explanation:
Answer:
x = 4, y = 0
Step-by-step explanation:
Two find x and y, we can simply solve one of the two equations for one of the variables, and substitute it into the other. That will provide one of the two values, which can then be plugged into either equation for the other value. Let's do it:
So x is equal to four, and y is equal to zero.