Brandon was working on his math homework with his friend, Kevin. Brandon looked at the following problem. -7.5 - (-4) -4.5 He told Kevin that he did not
know how to subtract negative numbers. Kevin said to use addition to solve the
subtraction problem. What did Kevin mean by that? Explain. Then show your
work, and represent the answer as a single rational number.

answer: 20

step-by-step explanation:

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 : )

where did you get them? if you picked from the grass, is is probably poisonous.

step-by-step explanation:

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation: