Answer:
7
Step-by-step explanation:
7 x 3 = 21
Answer:


Step-by-step explanation:
Given
-- Mean of T-shirts
-- Standard deviation of T-shirts

Solving (a): The mean of the revenue 
To solve this, we use:

This gives:


Solving (b): The standard deviation of the revenue 
To solve this, we use:

This gives:



Answer:
3
Step-by-step explanation:
A + B is calculated by adding the same positions in both matrices.
and position (2, 3) in A+B is therefore the sum of position (2, 3) in A plus the position (2, 3) in B, which is then
-4 + 7 = 3
Answer:
the smallest possible perimeter is 6
Step-by-step explanation:
since the smallest possible prime number is 2 it would make since if each side is 2 which makes the smallest perimeter possible. i really hope this helped :)