Answer:
1961
Step-by-step explanation:

ok, I did smth wrong
I hope you can find error
Answer:
45
Step-by-step explanation:
45 +45=90
Answer:
148
Step-by-step explanation:
just searched it up good luck sorry if its wrong
Answer:
Step-by-step explanation: 3²+12²=x² simplifies to 9+144=x² so 153=x² or x²=153.
A.

B.

Megan's solution isn't correct.
The first mistake: she subtracted 5x from the right-hand side of the equation, but added 5x to the left-hand side.
The second mistake: she divided the right-hand side of the equation by 11, but didn't divide the left-hand side.
The correct solution: