use the roster method to write each of the given sets. for some exercises you may need to consult a reference, such as the internet or an encyclopedia. (enter empty for the empty set.)
the set of natural numbers x that satisfy x + 8 = 1

Answer is empty set.

Step-by-step explanation:

Here the given equation is x+8=1

on solving this equation ,we subtract 8 both sides ,we get

x+8 -8 = 1-8

x =-7

here we can see that we have only one value of x which is -7

now lets see the set of natural number

N = { 1,2,3,4,5 } here we can see that natural number starts from 1 that is it does not include negative number therefore -7 is not natural number .

therefore answer for this equation as roster set will be empty set .

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5

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 : )