Mathematics, 03.03.2021 21:50 vlonejd43

Tried to think didnt work it out help

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Answer from: dsanders20

tried to think...didnt work out to well.

Step-by-step explanation:

Answer from: jhanley5862

i dk the anser thanks for the points tho

Step-by-step explanation:

Answer from: Quest

step-by-step explanation:

the orientation of the parabolas can easily be found by analysing the power of x and y and their signs. if x is squared , parabola opens up and also if its coefficient is negative it opens down. if y is squared , the parabola opens right and also if its coefficient is negative it opens left. however in order to do the above analysis our equation must be in standard form .

our parabola is

$x=\sqrt{y-9}$

which is not standard form of any parabola . hence we square on both hand side and convert it into standard form.

$x^2=y-9$

hence we see that x is squared and its coefficient is non negative . there for it opens up.

Answer from: Quest

a) one student is chosen from classroom a, then a student is chosen from classroom b.

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b. this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes. this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes. this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes. this makes them dependent events.

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