exam Maths Puzzle Numerical Ability

please help me solve this promblem
use the substitution method to solve the linear system
here is the promblem
x-5y=-10
y=-2x-9
please help

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exam Other Question

Can someone show me the graph on this problem?

I need to graph the inequality for:

3x + y <= 5

Thanks,
Jamie x^2+5x-14 divided by x^3+10x+21X

Hi, I just wante to make sure I have the right answers, which is X-2 over x(X+3). Thank You!