Answer:
7s
Step-by-step explanation:
We can combine this because they are like terms.
11 squared is 121
20 squared is 400
121+400= 521
The approximate square root of 521 is approximately 22.8254
Answer:
the answer is 3
Step-by-step explanation:
1. the last one
2.the first one hope this helps.
To solve for

You first need to find a common denominator.
To do so, you need to make both denominators 10 by multiplying the top and bottom of

by 5

=

Reduce by dividing both the top and bottom by 2
Your answer is