I neeed help. I'm trying to find this missing side of a triangle one side has a 9, another side has a 18, and the last side has a X. What is the answer for X?

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Write the expression 7x^3-28xy^2 as the product of 3 factors

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?