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How would you evaluate the expression 3x 4y equals 9 when x equals 2 and y equals 5?
3x + 4y = 9 is an equation, a statement that states the two expressions 3x + 4y and 9 are equal. We like to know if there are any values of the variables x and y that will make the statement a true one.
In our case, we're going to check if x = 2 and y = 5, will satisfy the given equation. In other words, if we substitute the corresponding values of x and y into the equation and the left side will equal to the right side, then (2, 5) is a solution. Otherwise, it's not.
Check:
3x + 4y = 9; x = 2 and y = 5
3(2) + 4(5) =? 9
6 + 20 =? 9
26 = 9 False
Therefore, (2, 5) is not a solution.
What else can I help you with?
Evaluate 3x if x equals -2?
5
What is 3x plus 2y - x plus 2y?
"3x + 2y - x + 2y" is an expression that is often part of an equation; possibly a linear equation, though it could be of higher order as there could be squares, cubes etc. To be definite there would be an equals sign (=) and an expression, usually a number, the other side of it.
Substitute 4 for x and evaluate the expression 3x - 5 - 10?
3x actually means 3 * x.So we are going to follow BODMAS rule... 3x-5-10 =3*4-5-10 =12-5-10 =7-10 =-3 Here's your answer..
What does x equals in 3x 12 equals 18?
3x+12 = 18 3x = 18-12 3x = 6 x = 2
Generating equivalent expression 3x-9 plus 3x plus 5?
The equivalent expression of 3x-9 plus 3x plus 5 is negative 4.
How would you evaluate the expression 3x-4y equals 9 when x equals 2 and y equals 5?
explain how to evaluate an algebraic expression for given variables. how would we evaluate the expression "3x-4y+9" when x=2and y=5?
What is the evaluate algebraic expression for -3x plus 2 equals?
Given a value of x, find the value for -3x + 2
How do you evaluate an expression?
You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.
How do you evaluate an algebraic expression?
You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.
Evaluate 3x if x equals -2?
5
Evaluate 3x plus 5when x 2 what is the value of the expression is?
When x = 2, 3x + 5 = 11.
Evaluate the expression if x2 and y3 3x plus y?
the answers is d
What is the algebraic expression answer for 3x plus 5 equals 14?
3x+5=14 3x=9 x=3
What is the answer to the equation 6 x - a -3 x plus a?
3
Simplify the algebraic expression 7x squared minus 4y plus 3x squared plus 5y plus 2 and evaluate it for x equals 3 and y equals 9?
7(3y-2)-(-4y+9)
How do you do evaluate expression?
You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.
How do you solve 3x - 4 equals?
You don't, unless you know either the value of x or what the expression equals.
