Is (-1,2) a solution of the system y > x and x + y > 0

Step-by-step explanation:

for it to be a solution, it has to satisfy both inequalitiesnot just one

y > x(-1,2)x = -1 and y = 2now we sub

2 > -12 is greater then -1this is true

x + y > 0(-1,2)...x = -1 and y = 2sub

-1 + 2 > 0

1 > 01 is greater then 0this is true

so (-1,2) IS a solution to this system because it satisfies both inequalities

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60