HELP ITS URGENT
Find the value of x.

Step-by-step explanation:

Exterior angle property:

Exterior angle of a triangle equals the sum of  opposite interior angles

∠WBC = ∠D + ∠C

18x + 5 = 46 + 8x - 1

18x + 5  = 8x + 45  

Subtract 5 from both sides

18x = 8x + 45 -5

18x = 8x + 40

Subtract 8x from both sides

18x - 8x = 40

10x  = 40

Divide both sides by 10

x = 40/10

x = 4

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two