5y-2y+7y=?

what is the answer

a string of holiday lights at a store have three colors that flash at different times. red lights flash every fifth second. blue lights flash every third second. green lights flash every four seconds. the store owner turns on the lights.

Whats thw perimeter of a rectangle with length 12 m and width 5 m?

The slope of (-2,5) (3,-5)

Bill is 6 feet tall he casts 4 foot shadow that at the same time a tree That is 16 foot tall casts a shadow use someone triangles to find the height of the tree

What is the value of c3=1,728?

The expanded form of 10 to the power of 0

Five is three more than a number n. I don't understand this at all!

How can you use the side lengths of a triangle to determine if it is an acute triangle?

On the 5th grade class picnic, 50 students share 75 sandwiches equally. How many sandwiches does each student get?

The serum cholesterol level of u. s. females 20 years old or older is normally distributed with a mean of 200 mg/dl (milligrams per deciliter) and a standard deviation of 44 mg/dl. let x represent serum total cholesterol level for u. s.