Answer:
-12
Step-by-step explanation:
first we collect like terms then
z=-21-(-9)
z=-21+9
z=_12
Answer:
Yes, the x and y values swap places.
Matrix B has dimensions 4x3
Matrix C has dimensions 3x4
Write out those dimensions like so: 4x3 3x4
The inner '3's match up so B*C is possible. The dimensions of B*C is 4x4 as these are the outer dimensions when lining up 4x3 3x4
Since B*C is a square matrix, it is possible that an inverse could exist. Keep in mind that this isn't a guarantee as the determinant of B*C could be zero (which would lead to BC being non-invertible). Though of course we'd need more info.
Answer:
16x2=32
Step-by-step explanation:
A multiple of 16 is any number divisible by 16. Multiplying 16 by 2 creates a number divisible by 16 and 2, meaning it is divisible by 16.
16x2=32 32/16=2
You take the total amount of birdseed (55 cups) and divide that by the amount of birdseed used each day (3/4 cup or 0.75 cup).
55/0.75= 73.33
so the birdseed will last 73.3 days