Answer:
the correct answer is below
Step-by-step explanation:
11p7-9p5+8p³-4p7+13p5-5p³
11p7-4p7-9p5+13p5+8p³-5p3
=7p7+4p5+3p³
note: I multiply all the terms in the second parentheses by the negative sign that is beside it.
Reason number 1 (before) is that you could contaminate your samples if you have foreign material on your hands.
Reason number 2 (after) is that you could spread<span>/or ingest dangerous chemicals or substances that you have handled in the lab.</span>
Answer:
Opt A. 17
Step-by-step explanation:
This is the distance between two points, which can be obtained with following equation.
Where (x2,y2)=(10,4) and (x1,y1)=(2,19)
Therefore, if we develop a little with the following:
(10-2)^2=(8)^2=64
(4-19)^2=(-15)^2=225
Evaluating that in the equation, we have: sqrt(64+125)= sqrt(289)=17
That is the distance between those points.
I think it is the last one but Im not sure
