TRUE OR FALSE
1. A sphere is a solid figure whose set of points are equidistant from the center.
2. Nine less than a number is an equation.
3. All the faces of the cube are squares.
4. A sphere is a plane figure.
5. A cone has no vertex.
6. 6x + 2 = 14 is an equation.
7. A numerical expression is a mathematical phrase that contains only
numbers.
8. 3 + 6 – 2x5 is an equation.
9. A variable is any letter or symbol that represents a number.
10. In 6 b + c, 6 is a variable.