If 9x+2y^2−3z^2=132 and 9y−2y^2+3z^2=867, then x+y =

Step-by-step explanation:

Step 1: Identify the approach:

With this problem, the general solution is to try manipulate given data and transform data into a new form, in which, the desired value is on the left side and all of other components which do not contain or are on the right side.

Step 2: Analyze:

Realize that in both equations, the and are in form of different signs. Then adding up corresponding sides of both equation can help eliminate these undesired components.

Step 3: Perform manipulation:

Rearrange:

Simplify:

Simplify:

Hope this helps!

:)

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

eww xbox also eww dayz

step-by-step explanation:

just for that im not answering