Answer:
x/2
Step-by-step explanation:
2/2=1=y
4/2=2=y
6/2=3=y
Answer:
125 pounds
50/4 = 12.5 pounds stretches a spring to 1 inch
12.5x10=125 pounds of force
To answer this question, you should draw a picture of a large rectangle with labels 15 ft by 20 ft.
Inside the large rectangle, draw another rectangle (the carpet) with dimensions 9 ft by 12 ft.
When you do this, you will see that you will have 3 feet of space on both sides of the longer wall (15 - 9 = 6; 6/2 = 3 feet).
On the shorter wall, you will have 4 feet of space (20 - 12 = 8; 8/2 = 4 feet).
You will have room for your couch on the shorter wall without touching the carpet.
<span>I assume that the x is squared
(on Yahoo!Answers, we often use the caret ^ to show a power or an exponent)
(think of it as a tiny arrow pointing up, showing that the following number should be seen as if it were raised above the line)
2(x^2 + 5) = 60
Can it be x = 5 ?
we test:
2(5^2 + 5) = 2(25 + 5) = 2(30) = 60
it works, therefore x = 5 is a solution.
Can it be x = -5?
we test again:
2[(-5)^2 + 5) = 2(25 + 5) = 2(30) = 60
it works, therefore x = -5 is also a solution.
The way you did it, there could be some confusion between step 4 and step 5 (because you do not explain how you go from 4 to 5).
If you simply "take the square root" on both sides, someone could argue that the "principal" square root of a number is the positive value (+5 only, not -5). On the other hand, if you state:
(after step 4), we look for all values that give 25 when they are squared, then -5 is allowed.
The way the conjecture is stated at the beginning, the easiest way is to check both values to find out that, yes, they are both valid solutions.</span>
