What is the solution to the system?
X+ y - Z=0
3x - y + Z = 4
5x+z=7
+ Z = 7
(1, 1, 2)
(-1, 0, 2)
(0, 1, 4)
(-1, 2, 4)

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

How many verticies does a triangular prims have