Answer:
495 combinations of 4 students can be selected.
Step-by-step explanation:
The order of the students in the sample is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
How many combination of random samples of 4 students can be selected?
4 from a set of 12. So
495 combinations of 4 students can be selected.
Answer:
3x-y=12
3x-12=y
to find value of
8x/2y
8x/2(3x-12)
8x/6x-24
8x/6x-8x/24
4/3-x/3
4-x/3
Step-by-step explanation:
Answer:
there is no picture so it is impossible to answer
Step-by-step explanation:
Answer:
Gene ran faster
Step-by-step explanation:
The fastest time is the smallest time since they ran the same distance
gene ran 90 meters in 16.3 seconds.
alma ran 90 meters in 17.2 seconds
16.3 < 17.2
Gene ran faster
That would not be right because 4 times 3 equals 12 and -6 times 3 equals -18.
