Answer:

thats it all of them are 69
Answer:
Step-by-step explanation:
63 x 4 = 2x2=3 - 17? Simplified form of this expression: The chosen topic is not meant for use with this type of problem.
So instead I will simplify the matrix, if you simply the matrix, the ANSWER will be: 252 = 2x^2 = -14
Answer:
B. This event will not happen.
C. The probability is 0.
Step-by-step explanation:
Only B and C can be answers because there are no green marbles so how can you select a green marble when there aren't any. The probility is 0 which means never going to happen.
Answer:
The number of the students is 20.
Step-by-step explanation:
Total number of students in the speech contest = 90
Number of students that gave their speeches yesterday =
of 90
=
x 90
= 60
Number of remaining students who have not given their speeches after the first day = 90 - 60
= 30
Number of students that gave their speeches today =
of 30
=
x 30
= 10
Number of students that have not given their speeches = 30 - 10
= 20
Thus, 20 students have not given their speeches.