Answer:
It's biased because they're only asking people standing in the lunch line, instead, they should be asking numerous of students randomly to eliminate biased.
Answer:
15.9
Step-by-step explanation:
Answer: x=2 y=-2
(2,-2) one solution
Step-by-step explanation:
Solve by substitution
Negative exponets are like normal ones
ex. 2^-2=-4 another way to do it 2^-2=2^2 with a - so you can do 2^2=4 add the - and it becomes -4.
Answer:
383
Step-by-step explanation:
Apply the rule of BIDMAS,
Firstly, solve the problem in brackets;
(382+417)−416
799-416
383
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