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Take 3 and substitute into the expression given to you but not mentioned in the question here and evaluate the expression. "Sub and Solve" I say.

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15y ago

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Evaluate the expression for the given value of the variable 5y - 1 for y equals 3?

14


How do you evaluate variable expressions?

To evaluate a variable expression, replace all the variables with numbers and simplify the resulting numerical expression. 3m for m = 9 3(9)=27


How do you evaluate expression 0.2 x n for n equals 3 and n equals 6?

3 6


Evaluate this expression for these numbers abc a equals 2 b equals 4 c equals 3?

2*3*4 = 24


Evaluate the expression 3x2y when x equals 3 and y equals 5?

(3 * 3)(2 * 5) (9)(10) 90


How do you Evaluate the expression 7d-5c if d equals 7 and c equals 3?

(7 x 7) - (5 x 3)


How do you evaluate expressions by substitution?

To evaluate expressions by substitution, first identify the variable(s) in the expression and determine their corresponding values. Replace each variable in the expression with its given value. Finally, perform the necessary arithmetic operations to simplify the expression and obtain the final result. For example, if the expression is (2x + 3) and (x = 4), substitute to get (2(4) + 3), which simplifies to (8 + 3 = 11).


What is the expression for x equals 3 and y equals 6?

A mathematical expression in its' most simplistic form, merely assigns a value to a variable. Don't confuse an expression with an equation. An equation requires a solution. An expression cannot be "solved". It only allows you to determine the value of a variable. This is the expression in words "x is equal to 3" (X is the variable which is equal to the constant number 3) This is the expression in numbers "x=3" The expression in words "y is equal to 6" (Y is the variable which is equal to the constant number 6) The expression in numbers is "y=6" I hope you understand now.


What is x to the 2nd power plus 2x equals 3?

A quadratic expression in the variable x.


Evaluate the expression for a 4 and b 3.?

Unfortunately there is no expression to evaluate!


What do you call replacing a variable in an expression by a number?

A variable is a letter that represents a number. An expression that contains at least one variable is called variable expression, also called algebraic expression. A variable expression has one or more terms. A term is a number, a variable, or a product of numbers and variables. For example,3(x^2)y + 2xy + x - 7 is a variable expression, where you have 4 terms.When working with variable expression, you often use the substitution principle:If a = b, then a may be replaced by b in any expression.The set of numbers that a variable may be represent is called replacement set, or domain, of the variable. To evaluate a variable expression, you replace each variable with one of its values and simplify the numerical expression that results.Example: Evaluate the expression 2x - 4y for x = 5 and y = -9.Solution:2x - 4y= 2(5) - 4(-9)= 10 + 36=46


How would you evaluate 15k when k equals 3?

To evaluate 15k when k equals 3, you would substitute the value of k into the expression. Therefore, 15k becomes 15(3), which simplifies to 45. So, when k equals 3, 15k equals 45.