Answer:
x=-6 is an extraneous solution
Step-by-step explanation:
we have

squared both sides



solve the quadratic equation by graphing
The solution is x=-6 and x=-1
see the attached figure
<u><em>Verify each solution</em></u>
substitute the value of x in the original expression
For x=-6


----> is not true
so
Is an extraneous solution
For x=-1


----> is true
so
Is the solution
Answer:
x+5=5
Step-by-step explanation:
This is an equation where you are actually solving it. The others are expressions.
Answer:
240 students
Step-by-step explanation:
28/35=x/300
cross multiply to get 35x=300*28
divide both sides by 35 to get 240
Number 5) A hill that rises 2 feet for every 10 feet of run. Because a longer run is not as steep as a short run.
Number 6) They all are parallel, they do not intersect.
Step-by-step explanation:
- If the stock goes up 30%, it's multiplied by
.
The reason is that 
- If the stock goes down 20%, it's multiplied by

The reason is that 
- If the stock goes down 30%, it's multiplied by

The reason is that 
- If the stock goes up 40%, it's multiplied by
.
The reason is that 
So
If you increase it by 30% and then drop it by 20%, it means you are multiplying it by
and then multiplying it by
. In other words:

So, the net gain is = .04
Assume the original value = 500
Increase it by 30% and it becomes 650
Decrease 650 by 20% and it becomes 520
So, the net gain = 20
Verification:
And
If you drop it by 30% and then increase it by 40%, you are multiplying it by .7 and then multiplying it by 1.4. In other words:

So, the net loss is = 1 - 0.98 = .02
Assume the original value = 500
Decrease it by 30% and it becomes 350.
increase 350 by 40% and it becomes 490.
So, the net loss is = 10
Verification:

Keywords: stock, loss, gain
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