Solve using matrices.

x + y + z = 6

x + y - z = 0

3x + 2y + z = 10

What is the value of the discriminant, b2 - 4ac, for the quadratic equation 0 = x2 - 4x + 5, and what does it mean about the number of real solutions the equation has? a. The discriminant is - 4, so the equation has 2 real solutions. b.

Sean knows the length of the base, b, and the area, a, of a triangular window in his bedroom. which formula could he use to find the height, h, of this window?

Which of the following statements must be true about this diagram? Check all that apply. A. m1 + m2 = m4 B. m1 + m2 = m3 C. m4 is greater than m2 D. m4 is greater than m1 E. m3 is greater than m2 F. m2 + m3 = m4

Katie is selling in lemonade for one $1.50 per cup she decides to put them on sale for $0.90 what percent discount did she give on her lemonade

Alternate exterior angles

Solve the inequality 7x ≥ - 7

The scale drawing of a window is 1 inch by 2 inches. The actual size of the window is 24 inches by 48 inches. What is the scale factor that is used to make the drawing?

Miranda and Savannah are excited that a new store just opened in town! They go together the first day it opens!

The solution to 4.2x = 19.32 is x = ___. 0.28 0.45 4.6 15.12

Richard has a rectangular plot of land that is 525 feet long and y feet wide. He decides to build a fence around the plot. If the perimeter of the plot is 1,504 feet, find the value of y