What is the highlighted (in yellow) part of your given solution? I don't know what it represents

Q: There were some children in a school hall. During recess, 3/7 of the boys and 7/9 of the girls left…

A: Let the number of boys in the hall at first be x and number of girls in the hall at first be y.

Q: Solve for a. 4a + 3c = -2a + 5 %3D [?] -[ ]c a = Enter the number that belongs in the green bpx.…

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Q: How about the solution for #5?

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Q: The point is i need explanation on how to solve each question.

A: Hi thanks you for posting this question  , since you have posted multiple subparts as per our policy…

Q: -5x1 + 4x2 = -3 -4x1 + 3x2 = 3 %3| Ex: 42 Э x =

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Q: d. За? + 6x 35 X =

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Q: olutions are only partly corre

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Q: I am stuck in this question and unsure of how to solve it.

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Can this problem be solved by subtracting-? If so, explain why. If not, explain why not and solve…

A: The answer is no, we can't solve the problem by subtracting 23-12.

Q: Find a least-squares solution of Ax = b by (a) constructing the normal equations for x and (b)…

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Q: What value of x is in the solution set of 2x – 3 > 11 – 5x

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Q: solution

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Q: where are the other solutions?

A: Since first 3 subpart is already solved so i am solving next subpart i.e. (d),(e),and (f) We have…

Q: Does the solution it address the three additional people drawing?

A: It is related to binomial probability : P(X=x) = nCx*px*qx    p= 12/52 = 0.23 q= 1-(12/52) = 0.77