Which expression has a value of 51?

a. (50+10)÷5+5

b.(50+10)÷(5+5)

c.50+(10÷5+5)

d.50+10÷(5+5)

What is the length of the unknown leg in the right triangle ?

Which expression is not a polynomial?

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points