180 is the degrees a straight line segment is. This means that
4x + 3x + 2x = 180.
Since these all have the same variable (x), then you can add the coefficients. (4,3,2)
9x = 180
180/9 = x
X = 20
The answer is 42 because there are 10 adults and
M=4(10)+2
M=40+2
M=42
Answer:
The population of a statistical survey is chose at random, so it's not believed to be biased.
it would be 9.93300
so 3 decimal places because the zeros don't count
