X(x+3)-7(x+3)
x2+3x-7x-21
x^2-4x-21
<span>By the Pythagorean theorem
AB = </span>√(12²+5²) = √169 = 13 units
Probability=number of specific outcomes/total possible outcomes
And the probability of two events happening at the same time is P(1)*P(2), or the product of the probabilities of each event...
In this case:
P(primary color)=3/6=1/2
P(head)=1/2
P(primary and head)=(1/2)(1/2)=1/4
Y=2 7x2= 14
X= 7 4x7=28
28-14=14