1st half 2nd half score 45 30
a b
It is known that Tom's weighted mean score is 38 marks. Find a:b.

dd

step-by-step explanation:

dd

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13