The mean of 8 numbers is 12.Five of the numbers are 6, 8, 5, 10 and 28.The remaining three numbers are each equal to k. Find (i) The sum of the 8 numbers.
(ii) The value of k.

unless if u could do my questions, if not i wouldn't want to

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3

answer: they are supplementary angles

step-by-step explanation: 161+19=180. supplementary angles equal 180 degrees