Mình cần câu d ( những câu khác lm hay kh đều đc )

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.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

Two numbers have a sum of -19. one number is x. what expression represents the other number?