Answer:
10
Step-by-step explanation:
you use the Pythagorean theorem which you do 24^2 + b^2 = 26^2 you should have 576+b^2=676 then subtract 576 on both sides b^2=100 then sqre root which leaves you with b=10
50
because 89-49=49 49 rouded to the nearest ten is 50
Check the picture below.
B. a >-2
Hope this helps! Ask me anything if you have any quistions!