Answer:
<h2>-87</h2>
Step-by-step explanation:
(10 ÷ 5) + 10 – (9 x 11)
=(2) + 10 - (99)
=2 +10 - 99
= -87

There's "8. '' In the first, is this also included? Or it's the number of the expression?
Answer:
I think its 86
Step-by-step explanation:
I used a calculator.
Answer:
B. (-1, 2) and (4,7)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
something to do with sets
Step-by-step explanation:
I think {odd numbers from 1 to 15 inclusive, there is something more to it but this is just a idea