Question

which of the following are equations?
check all that are true.
3x + 2y = 30
1/3 + x
b + 5
z = 14
x - 2

Explanation:

Step1: Recall the definition of an equation

An equation is a mathematical statement that shows the equality of two expressions, meaning it contains an equal sign ($=$).

Step2: Analyze each option

• For \(3x + 2y = 30\): It has an equal sign, so it is an equation.
• For \(\frac{1}{3}+x\): It is an expression (no equal sign), so not an equation.
• For \(b + 5\): It is an expression (no equal sign), so not an equation.
• For \(z = 14\): It has an equal sign, so it is an equation.
• For \(x - 2\): It is an expression (no equal sign), so not an equation.

Answer:

A. \(3x + 2y = 30\)
D. \(z = 14\)