Answer:
3 stands for the main amount.
Step-by-step explanation:
The answer is 50, just divide 10 and 2, you get 5 and multiply the 5 with the 10
64 6-2=4 then 4 times 4= 16 times 4 equals 64
-8x+4=36
-4 -4
-8x=32
divde be -8 on both sides
x=-4
7th grade has 3 boy out of 10 students
probability of picking a boy is 3/10
8th grade has 9 boys out of 12 students are boys
probability of picking a boy is 9/12 reduced to 3/4
3/10 x 3/4 = 9/40 probability of picking 2 boys
