Table of Contents
How do you solve x 5 x 12?
So, Lets use the method of transposition.
- 12 – x/5 = x.
- 12 = x + x/5.
- 12 = x*5 /1*5 + x/5 (Cross multiplication.
- 12 = 5x/5 +x/5.
- 12 = 6x/5.
- 12 * 5 = 6x.
- 60 = 6x i.e 6*x.
- 10 = x.
What does the 5 mean in 5x?
anyway, 5x means 5 times x.
Which of the following is the value of x such that 5x 12 2 *?
Answer: The answer is 2.
What is the X called in math?
variable
The letter “x” is often used in algebra to mean a value that is not yet known. It is called a “variable” or sometimes an “unknown”. In x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn’t have to be “x”, it could be “y”, “w” or any letter, name or symbol.
How do you solve 12 x 15?
The result of 12⋅15 12 ⋅ 15 is 180 .
What does 5y mean in math?
Thus, 5y means “5 times y” and 2(x + 1) means “2 times the whole expression (x + 1).” Also, from this point forward, I will usually use the symbol “” to indicate multiplication, because it’s too easy to mix up the other multiplication symbol, , with the variable x.
What does 5x mean in algebra?
The numerical part of a term is called its numerical coefficient (or coefficient). In the term 5x, the 5 is the numerical coefficient. 5x means that the variable, x, is multiplied by 5.
How do you factor x 4 x 2 1?
3 Answers
- x4+x2+1=(ax2+bx+c)(dx2+ex+f) Without bothering to multiply this out fully just yet, notice that the coefficient of x4 gives us ad=1 . We might as well let a=1 and d=1 .
- … =(x2+bx+c)(x2+ex+f) Next, the coefficient of x3 gives us b+e=0 , so e=−b .
- … =(x2+bx+c)(x2−bx+f)
What is the XtraMath guy name?
David Jeschke
David Jeschke started XtraMath in 2007 to help kids learn math.
What does (!) Mean in math?
Factorial: Denoted by the exclamation mark (!). Factorial means to multiply by decreasing positive integers. For example, 5! = 5 ∗ 4 ∗ 3 ∗ 2 ∗ 1 = 120.
What is the factors of 180?
Factors of 180 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, and 180.
What is the strategy when multiplying by 5?
To multiply any number by 5, multiply it by 10 and then divide the result in half. To multiply any number by 6, multiply it by 5 and then add one more set of that number.