Answer:
Belinda swam 425 meters
Step-by-step explanation:
575=150+x
575-150=x+150-150
425=x
Answer:
800 people a year
Step-by-step explanation:
Answer:
Don't know because there is only 1 number there is no another . please write answer in comment
Step-by-step explanation:
We have (x + y)² = (x + y)(x + y) = x² + 2xy + y².
Let x be 3a and y be 2.5b.
Therefore (3a + 2.5b)²
= (3a)² + 2(3a)(2.5b) + (2.5b)²
= 9a² + 15ab + 6.25b².
Hence the '*' sign should be replaced with 15ab.