Answer:
A. CB
Step-by-step explanation:
3 x 2 (C is a 3 by 2) matrix can be multiplied to a 2 x 2 (B is a 2 by 2) matrix since C has 2 columns that are equal to the number of rows in the second matrix B.
A way of checking if two matrices can be multiplied is to first check the number of columns the first matrix contains and then check the number of rows that the second matrix contains.
If the number of columns in the first matrix equal the number of rows in the second matrix then that means it is possible to multiply these matrices.
Answer: A B
Group 1 0.25 0.75
Group 2 0.44 0.56
Step-by-step explanation:
Since we have given that
Number of people of A in group 1 = 15
Number of people of B in group 1 = 45
Total number of people in group 1 is given by
Relative frequency of people of A in Group 1 is given by
Relative frequency of people of B in Group 1 is given by
Similarly, Number of people of A in group 2 = 20
Number of people of B in group 2 = 25
Total number of people in group 2 is given by
Relative frequency of people of A in Group 2 is given by
Relative frequency of people of B in Group 2 is given by
Hence, A B
Group 1 0.25 0.75
Group 2 0.44 0.56
Answer:
901$
Step-by-step explanation:
Answer:
1680 ways
Step-by-step explanation:
Permutation has to do with arrangement
If a contractor builds homes of 8 different models and presently has 4 lots to build on, the number of ways he can arrange his homes is expressed as;
8P4 = 8!/(8-4)!
8P4 = 8!/4!
8P4 = 8*7*6*5*4!/4!
8P4 = 8*7*6*5
8P4 = 1680
Hence the can arrange his homes 1680 ways
Answer:
3) 990
4) 8340
5) 5407.50
Step-by-step explanation:
3) 8250(4%*3)
990
4) 8250+990=8340
5) 5150(1+1%*5)=5407.50
