Answer: 9. 5y 10. 10x2 - 4 11. 2a5 + 5b 12. 8m + 4n + 2
Step-by-step explanation:
Since the two shapes above are congruent, meaning they are the same, you can observe that three of the four angles for the total shape are given. The angles that were given include 133, 86, and 41 degrees. However, a quadrilateral has 360 degrees, and you can find the missing angle by adding up the three given degrees and subtracting it from 360. 133+86+41=260 degrees. You can then subtract it from 360. 360-260=100. So, the degrees of the missing angle is 100 degrees.
C. because the volume is 356 I know this because ive done this before