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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"
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What is the converse of if x equals 3 then 2x equals 6?
I believe the converse is: if 2x equals 6 then x equals 3 inverse: if x doesn't equal 3 then 2x doesn't equal 6 contrapositive: if 2x doesn't equal 6 then x doesn't equal 3
Evaluate the expression 3x2y when x equals 3 and y equals 5?
(3 * 3)(2 * 5) (9)(10) 90
If x equals 6 and y equals 3 then 9x plus 8y equals?
9x + 8y = (9 x 6) + (8 x 3) = 54 + 24 = 78
What is the value of the expression x-y squared when x equals 7 and y equals negative 2?
If the expression is (x - y)2, the solution is (7 - -2)2 = (7+2)2 = 92 = 81. If the expression is x - y2, the solution is 7 - (-2)2 = 7 - 4 = 3.
If y equals 6x and x equals 3.5 find y?
y = 6 x 3.5; If you can't do that in your head, split it up: 6 x 3 = 18, 6 x .5 = 3, 18 + 3 = 21
