Answer:
Part 41) The solutions are 3 and 1
Part 42) The solution is 2 only
Step-by-step explanation:
Part 41) we have

step 1
Find the first solution (case positive)




step 2
Find the second solution (case negative)





therefore
The negative case was resolved incorrectly
The solutions are 3 and 1
Part 42) we have
step 1
Find the first solution (case positive)



<em>Verify</em>
For n=-3
substitute
------> is not true
therefore
-------> is not a solution
step 2
Find the second solution (case negative)





therefore
The solution is 2
Answer:
21/200
Step-by-step explanation:
take .105 and put it over thousand ( 105/1000) then see what number you could divide by to make the fraction smaller (105/1000 ÷ 5) then divide by that number (105/1000 ÷ 5 = 21/200)
There ya go!
The number with the same value as 28 tens is 280.