Given, a = -65 and b = 8.
We have to find multiplication of them.
a is negative and b is positive. When we multiply them, we know that the multiplication of positive and negative is negative. That means
.
So 
=
=
= 
So we have got the required product.
Multiplication of a and b = -520.
The correct option is option C.
Answer:

Step-by-step explanation:
![2X-\left[\begin{array}{ccc}-4&8\\2&-2\end{array}\right] =\left[\begin{array}{ccc}2&-2\\8&5\end{array}\right]\\X=\frac{1}{2} (\left[\begin{array}{ccc}-4&8\\2&-2\end{array}\right] +\left[\begin{array}{ccc}2&-2\\8&5\end{array}\right])\\X=\frac{1}{2} (\left[\begin{array}{ccc}-4+2&8-2\\2+8&-2+5\end{array}\right] )\\X=\frac{1}{2} (\left[\begin{array}{ccc}-2&6\\10&3\end{array}\right] )\\X= (\left[\begin{array}{ccc}\frac{1}{2}(-2)&\frac{1}{2}(6)\\\frac{1}{2}(10)&\frac{1}{2}(3)\end{array}\right] )\\](https://tex.z-dn.net/?f=2X-%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-4%268%5C%5C2%26-2%5Cend%7Barray%7D%5Cright%5D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26-2%5C%5C8%265%5Cend%7Barray%7D%5Cright%5D%5C%5CX%3D%5Cfrac%7B1%7D%7B2%7D%20%28%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-4%268%5C%5C2%26-2%5Cend%7Barray%7D%5Cright%5D%20%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26-2%5C%5C8%265%5Cend%7Barray%7D%5Cright%5D%29%5C%5CX%3D%5Cfrac%7B1%7D%7B2%7D%20%28%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-4%2B2%268-2%5C%5C2%2B8%26-2%2B5%5Cend%7Barray%7D%5Cright%5D%20%29%5C%5CX%3D%5Cfrac%7B1%7D%7B2%7D%20%28%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-2%266%5C%5C10%263%5Cend%7Barray%7D%5Cright%5D%20%29%5C%5CX%3D%20%28%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%5Cfrac%7B1%7D%7B2%7D%28-2%29%26%5Cfrac%7B1%7D%7B2%7D%286%29%5C%5C%5Cfrac%7B1%7D%7B2%7D%2810%29%26%5Cfrac%7B1%7D%7B2%7D%283%29%5Cend%7Barray%7D%5Cright%5D%20%29%5C%5C)
![X= (\left[\begin{array}{ccc}-1&3\\5&3/2\end{array}\right] )](https://tex.z-dn.net/?f=X%3D%20%28%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%263%5C%5C5%263%2F2%5Cend%7Barray%7D%5Cright%5D%20%29)

The answer is 3 Baseballs. This is true because 75 ounces distributed into 15 baseballs is 5 so to get 15 ounces you will need 3 Baseballs.
Since 13,687 vehicles will fit on 14 1,000-space parking lots we have:
14*1,000 = $14,000 will be the cost to lease enough lots to accommodate an overflow of 13,687 vehicles.
Commonsense you do math in your mind