Consider the following linear system. -2x+5y=23
-10x+ky=115
The value of k that will produce a system with an infinite number of solutions is?
a.
–25
b.
25
c.
5
d.
–5

What is the first step of an indirect proof of a number that is divisible by two

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.