I'm really confused i'm not that good in math

pretty sure it's -4.5

Step-by-step explanation:

idk mate, just used calculator

-9/2 or -4.5

Step-by-step explanation:

When you divide fractions, you take the reciprocal, or the opposite of the fraction, and you multiply it.

In this case, we have -2/(4/9), which would be the same as -2(9/4)

This, when multiplied, is -18/4, which is equal to -9/2 or -4.5

the answer for this question is 38

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )