Distribute the 3 to 4m and 6. this makes 12m-18=12
now add 18 to both sides.
12m=30
now divide by 12
m=30/12
I believe the answer would be D 92 and 88 hope it helped
14.94 cm ( to 2 dec. places )
We require the sum totals of the 2 groups before calculating the mean of all 14
using mean = 
Children's sum
12.6 =
( cross-multiply )
sum = 6 × 12.6 = 75.6
Adult's sum
16.7 =
( cross- multiply )
sum = 8 × 16.7 = 133.6
Total sum of all 14 = 75.6 + 133.6 = 209.2
mean =
= 14.94 cm
The answer is Choice A: (cos(theta), sin(theta))
More specifically x = cos(theta) and y = sin(theta) make up the point (x,y) which is where point P is located. Because we have a unit circle, the equation of the circle is x^2+y^2 = 1. This leads to cos^2(theta) + sin^2(theta) = 1 which is the pythagorean trig identity.
I'm pretty sure the answer is "19", but if i'm wrong please don't kill me.