2x^2+3
x=3
2(3)^2+3
2(9)+3
18+3
21 is the answer.
Answer:
C
Step-by-step explanation:
They are vertical angles, vertical angles always have the same measurement. example below
this angle is 56---> 56 ><m <---- this angle is always 56 since they are vertical
1. Using your straightedge, draw a reference line, if one is not provided.
2. Copy the side of the square onto the reference line, starting at a point labeled A'.
3. Construct a perpendicular at point B' to the line through ab2.
4. Place your compass point at B', and copy the side of the square onto the perpendicular b'g. Label the end of the segment copy as point C.
5. With your compass still set at a span representing AB, place the compass point at C and swing an arc to the left.
6. Holding this same span, place the compass point at A' and swing an arc intersecting with the previous arc. Label the point of intersection as D.
7. Connect points A' to D, D to C, and C to B' to form a square.
Step-by-step explanation:
We use
Now we have
Hope that useful for you
