The probability that the teacher selects both boys from a seventh grader and eighth grader.
first calculate the probility that it is boy in each grade
7th
x = 7 / ( 7 + 3) = 7 / 10
8th
y = 2 / (2 + 2) = 1 / 2
so the probability
P = ( 7 / 10 ) ( 1 / 2 )
P = 0.35
Answer:
3x^2 -7x +2
Step-by-step explanation:
(15x^2 -35x+10) ÷5
(15/5x^2 -35/5x+10/5)
3x^2 -7x +2
This will factor
(3x-1) (x-2)
Answer:
x = 106
Step-by-step explanation:
These are alternate exterior angles, and alternate exterior angles are equal
x = 106