Caleb is solving the following equation for xxx. x=\sqrt{x+2}+7x= x+2 ​ +7x, equals, square root of, x, plus, 2, end square root, plus, 7 His first few steps are given below. \begin{aligned}x-7&=\sqrt{x+2}\ \ \\ (x-7)^2&=(\sqrt{x+2})^2\\ \\ x^2-14x+49&=x+2 \end{aligned} x−7 (x−7) 2 x 2 −14x+49 ​ = x+2 ​ =( x+2 ​ ) 2 =x+2 ​ Is it necessary for Caleb to check his answers for extraneous solutions?

-8

step-by-step explanation:

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.

this is answer of 144 cubic meters

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step-by-step explanation: