9514 1404 393
Answer:
![\left[\begin{array}{cc}12&1\\-4&1\\-11&28\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D12%261%5C%5C-4%261%5C%5C-11%2628%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
The element at row i column j in the product is the dot-product of row i of the first matrix and column j of the second matrix. For example, row 2 column 1 of the product is ...
(row 2) · (column 1)
[3, -2, 4] · [2, 7, 1] = (3)(2) +(-2)(7) +(4)(1) = 6 -14 +4 = -4
The attachment shows the complete product matrix. It is convenient to let a spreadsheet or graphing calculator do the tedious repetitive arithmetic.
Answer:
16 tiles
Because there are 4 parts in 4/4 and the if you have 4 of the four parts that is 16.
Answer:
the correct answer is going to be D
Step-by-step explanation:
Start with
![c=\dfrac{5(f-32)}{9}](https://tex.z-dn.net/?f=c%3D%5Cdfrac%7B5%28f-32%29%7D%7B9%7D)
Multiply both sides by 9:
![9c=5(f-32)](https://tex.z-dn.net/?f=9c%3D5%28f-32%29)
Divide both sides by 5:
![\dfrac{9c}{5}=f-32](https://tex.z-dn.net/?f=%5Cdfrac%7B9c%7D%7B5%7D%3Df-32)
Add 32 to both sides:
![\dfrac{9c}{5}+32=f](https://tex.z-dn.net/?f=%5Cdfrac%7B9c%7D%7B5%7D%2B32%3Df)
The lack of parenthesis makes it hard for me to understand what you mean with aC+b/c, since it could be both
![aC+\dfrac{b}{c}](https://tex.z-dn.net/?f=aC%2B%5Cdfrac%7Bb%7D%7Bc%7D)
or
![\dfrac{aC+b}{c}](https://tex.z-dn.net/?f=%5Cdfrac%7BaC%2Bb%7D%7Bc%7D)