Hello!
You use the Pythagorean theorem to solve this

Put in the values it tells you to

Square the numbers

Subtract 19.36 from both sides

Take the square root of both sides
a = 3.3
The answer is 3.3
Hope this helps!
Answer:
25
Step-by-step explanation:
Answer:
90.6%
Step-by-step explanation:
66 (Joseph's books) +31 (Gilda's books) +31 (Mark's books)= 128 Number of books all together.
3/5 (because it is 0.6), 0.2, 0.19