I got 49 hope that will help.
You are correct in thinking that the columns of the first matrix must match with the rows of the second matrix.
So for example, we can multiply a 1 x 5 matrix with a 5 x 7 matrix. The two matching '5's are directly what make multiplication possible in this case. For your problem, the first two '3's match and multiplication is possible.
The rows of the first matrix don't need to match with the columns of the second matrix.
To solve for r, divide 2Pi to both sides of the equation. You will then get r=C/2Pi.
Answer:
4 + 2x = 28; = 12
Step-by-step explanation:
Start with the initial fee which is $4. Then times 2 with your miles for an example: (money with miles)2 x 6(miles) and you should have $12 dollars in total 2 x 4 which equal $8 and 2x2 which equal 4...
2 x 6 = 12
2 x 4 = 8
2 x 2= 4
add all those up and you should get 28..
To check your work do
4 + 2(12) = 28
4 + 24 + 28
Your Welcome!
Cross multiply:
12*X= 7*7
=