Answer: In mathematics, a variable is a symbol which functions as a placeholder for varying expression or quantities, and is often used to represent an arbitrary element of a set. In addition to numbers, variables are commonly used to represent vectors, matrices and functions
Step-by-step explanation:A symbol for a value we don't know yet. It is usually a letter like x or y.
Example: in x + 2 = 6, x is the variable.
Why "variable" when it may have just one value? In the case of x + 2 = 6 we can solve it to find that x = 4. But in something like y = x + 2 (a linear equation) x can have many values. In general it is much easier to always call it a variable even though in some cases it is a single value.
Answer:
lol me and thanks :p
Step-by-step explanation:
20/100 can be divided by 10.
2/10. It can still be divided by 2.
1/5 is your simplest form!
Hope this helps!
if the circle has a diameter of 25.2, its radius is half that or 12.6.
Answer:
4y+3x+17
Step-by-step explanation:
take the similar numbers and add them together.
1. -2y+6y = 4y
2. 5x-2x = 3x
3. 8+9 = 17
Put the numbers back together into the new and simplified equation: 4y + 3x + 17
