What is 4k-14+3k=21

What is the number of acute obtuse and right angle of a rectangle

18 = 3 (3x - 6) Step by step

What is the quotient of x+5/4x^2+25x+12

At the store, you buy some pencils for $0.50 each and some pens for $1.50 each. You spend a total of $12 and purchase 16 items (pencils and pens only). (a) Write and solve a system of equations that model the problem. Show all your work.

The dimensions of a square are altered so that 8inches is added to one side while 3 inches is subtracted from the other. The area of the resulting rectangle is 126in^2. What was the original side length of the square?

If ΔABC ≅ ΔFDE, which of the following statements is true? ∠A ≅ ∠E ∠B ≅ ∠F ∠C ≅ ∠E ∠A ≅ ∠D

Ali walked 4 miles in 50 minutes. Jeanie walked 5 miles in one hour Jeanie walked 5 miles in 60 minutes. Who walked faster

What is - 71x=-4402 equals to

4. Elena noticed that, nine years ago, her cousin Katie was twice as old as Elena was then, Then Elena said, "In four years, I'll be as old as Katie is now!

Choose the abbreviation of the postulate or theorem that supports the conclusion that WAS NOT. Given: WA = NO, WS = NT, W = N