Answer:
6-2x-2y+2 z
7-x(a+b+c)
8-y(x²+x)
9- -2a-2b-2c
10- -3(x+y)
11-10a+1 0b
12-5( x+2y)
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
20% of 65 is 13
65-13=52
Answer:
Mark is 9 and his brother is 14.
The expression for Mark: 23 - 9 = 14
The expression for his brother: 23 - 14 = 9
Step-by-step explanation:
We know that 14 is 5 more than 9, and Mark is the younger one so he would be 9 and his brother 14. 9 + 14 also equals 23, so thats how you know you have the right answers.
Two matrices may be added or subtracted only if they have the same dimension; that is, they must have the same number of rows and columns. Addition or subtraction is accomplished by adding or subtracting corresponding elements. For example, consider matrix A and matrix B. A =
If sugar costs 5.00 pounds per 15 kilograms and you have 25 pounds, all you have to do is set up a simple equation.
5/15 = 25/?
Using cross multiplication:
(25 * 15)/5 = 75
You will receive 75 kilograms of sugar.
