Question

Which of the following expressions cannot be written as an integer?
-3^0
18^3
square root of 49
1.2 x 10^-2

Answer 1

Let's evaluate each of the given expressions to determine which one cannot be written as an integer:

1. **-3^0**: The exponentiation takes precedence over the negative sign, so this expression is equivalent to \(-(3^0) = -1\). This is an integer.

2. **18^3**: This expression evaluates to \(18 \times 18 \times 18\), which is \(5832\). This is also an integer.

3. **square root of 49**: The square root of 49 is \(7\), which is an integer.

4. **1.2 x 10^-2**: This can be expressed as \(1.2 \div 100 = 0.012\). This is not an integer.

Thus, the expression that cannot be written as an integer is **1.2 x 10^-2**.