If the midpoint of the line segment joining the points a(8 , 3b + 2) and b(­2 , 2) is (3, 5), then the y­coordinate of a is ​

A (8,8)

Step-by-step explanation:

(3b+2+2)/2=5

b=2

y-cord= 3*2 +2

          =8

Step-by-step explanation:

3b + 2 + 2 = 2×5

3b + 2 = 10 - 2

3b + 2 = 8

the y- coordinate of A is 8.

answer:

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answer:

given,

we need to find the value k, for -4

is a zero of the polynomial x^2-x-(2k+2).

putting x=4 in the given polynomial, we

therefore, the required value of k is 9.