Step-by-step explanation:
(4y-y)(9+4x+3y)
36y+16xy+12y^2-9y-4xy-3y^2
collect like terms
36y-9y+16xy-4xy+12y^2-3y^2
=27y +12xy+9y^2
Lcm (72; 75) = 1,800: least common multiple, calculated. The numbers have common prime factors.
Answer:
Determine whether lines are parallel or perpendicular given their equations; Find equations of . We can begin by using point-slope form of an equation for a line. No. For two perpendicular linear functions, the product of their slopes is –1.
Step-by-step explanation:
The value of the expression decreases
Answer:
3w + 52 ≥ 90
Step-by-step explanation:
If she volunteers 3 hours per week for w weeks, then the number of hours from tutoring is 3w. Add the 52 hours from her summer volunteering, and her total hours is 3w + 52. This needs to be at least 90 hours for her to graduate, so:
3w + 52 ≥ 90
