Add 2+x
9 = x
If you're wanting the value of x, the answer is ...
x = 9
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You can always solve an equation like this by subtracting one side, then dividing by the coefficient of x, then adding the opposite of the constant. If you choose to subtract the right side, these steps will give you ...
9 -x = 0 . . . . . . subtract -2 from both sides
-9 +x = 0 . . . . . divide by the coefficient of x, which was -1
x = 9 . . . . . . . . .add the opposite of the constant, so add 9
Whatever you do to one side of the equation, you must also do to the other side. When we say "subtract -2", we mean "subtract -2 from both sides of the equation."
A=LW and L=W+6, W=L-6 using this W in the area formula
A=L(L-6)
A=L^2-6L
L^2-6L-A=0 and we are told that area=72 so
L^2-6L-72=0 factor
L^2-12L+6L-72=0
L(L-12)+6(L-12)=0
(L+6)(L-12)=0, since L>0
L=12 meters
A negative number would not be reasonable in the solution of rate he received on his investment. So we cannot have a negative rate received on the investment if the final amount is more than we started off with.
The reason being, when you have a positive percent rate of a number, you take that percent of the number and add it to the original. For example:
10% interest of $100 would give you $110
Now if that 10% were a -10% then you would be adding a negative number to the original. So:
-10% of 100 would give us $90 because 10% of 100 is 10 then you change it to a -10 and add -10+100=90
So we cannot have a negative rate received on the investment if the final amount is more than we started off with.
(The answer is bold) Hope this helps!
8 dollars
Step-by-step explanation:
without rounding it is $7.52 but you would round that to 8
