TrueFalse 1 The property illustrated in 2 3 4 2 3 4 is

True/False:

1. The property illustrated in 2 + (3 + 4) = (2 + 3) + 4 is commutative.

2. A fractional exponent indicates a radical.

3. The graph of a linear inequality is a straight line.

4. Matrices and technology are very incompatible

5. If dim C is 1 ´ 2 then C has 1 row.

6. If matrix R is 3x2 and S is 2x3 then SR is 2x2.

Solution

1. True, Addition of numbers is commutative.

2. True. A number raised to fractional exponent is also called a radical.

3. False, depending on the inequality, the region that satisfies the equation is the graph of a linear inequality.

4. False

6. False, SR = 3x3. The matrix formed by the product of 2 matrices has number of rows equal to 1st matrix and number of columns equal to 2nd matrix.