Determine the number of significant digits in the measurement.. 80.00 kg

4 significant digits.

Step-by-step explanation:

We are asked to find the number of significant digits in the given measurement: 80.00 kg.

Let us recall significant digit rules.

Upon looking at our given measurement, we can see that we have two digits before decimal and two trailing zeros after decimal.

Since trailing zeros are significant, therefore, our measurement has 4 significant digits.

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it