Answer:
1. 2A + 3A
2. 2A - B
3. 2A
4. 2(A-B)
Step-by-step explanation:
When multiplying matrix by a number you just multiply each number in the matrix by whatever you are multiplying. When adding 2 matrices you just add the corresponding number in each matrix. Ex: You add the top left number to the top left number. The same goes with subtraction.
Answer:
340 students.
Step-by-step explanation:
1) 1900-200=1700
2) 1700/5=340
the domain is the x value (first number) and the range is the y value (second number)
(if a number appears more than once in the domain or range, like in number 1 you don't have to write it again.)
to graph the domain and range you just plot the points,
and to map them you have to put the x values in the first oval and the y values in the second, usually in order from smallest to largest.
then you have to draw arrows connecting each x value to the y value that was in the same pair. just like when writing down the domain/range, if a number comes up again you don't have to write it down again. instead, you might have two or more arrows connecting to the same number.
Answer:
Step-by-step explanation:
The given line passes through (0,8) and (8,0).
The slope of this line is 
.
The point-slope form is given by:
We substitute the slope and the point (8,0) to get:
We substitute the slope and the point (0,8) to get:
You multiply 24 by 6 to get C. $144
