Xy=-36
x+y=-3
x= -36/y
-36/y + y = -3
-36 + y^2 = -3y
y^2 +3y -36 = 0
I think you have to use quadratic formula to find the 2 values of y and then plug in for x
Answer: Choice D)
S(x) = 6x^2 - 20x
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Explanation:
x = side length of base
x*x = x^2 = area of base
The top also has an area of x^2 since the base and top are both congruent squares. The total base area is x^2+x^2 = 2x^2
The height h is 5 inches shorter than the base, so
h = (base length) - 5
h = x-5
Each lateral side is of area h*x = (x-5)*x = x^2-5x
There are 4 lateral sides
Total lateral area = 4*(area of one lateral side)
Total lateral area = 4*(x^2-5x)
Total lateral area = 4*x^2-4*5x
Total lateral area = 4*x^2-20x
Add the total lateral area (4x^2-20x) to the total base area (2x^2)
Doing so gets us
S(x) = Total Surface Area
S(x) = (Area of bases) + (area of lateral sides)
S(x) = (2x^2) + (4x^2-20x)
S(x) = (2x^2+4x^2) - 20x
S(x) = 6x^2 - 20x
which is why the answer is choice D
Since <span><span>5p</span><span>5p</span></span> does not contain the variable to solve for, move it to the right side of the equation by subtracting <span><span>5p</span><span>5p</span></span> from both sides.<span><span><span>9c</span>=<span><span><span>−5</span>p</span>+p</span></span><span><span>9c</span>=<span><span><span>-5</span>p</span>+p</span></span></span>Add <span><span><span>−5</span>p</span><span><span>-5</span>p</span></span> and <span>pp</span> to get <span><span><span>−4</span>p</span><span><span>-4</span>p</span></span>.<span><span><span>9c</span>=<span><span>−4</span>p</span></span><span><span>9c</span>=<span><span>-4</span>p</span></span></span>Divide each term by <span>99</span> and simplify.
1. 314.15%
2. 314.1%
3. 314%
4. 314%
5. 314%
To solve this
problem, let us analyze this step by step. The temperature for each day is as
follows:
Water temperature
on Sunday = 78 degrees F
Water temperature
on Monday = changed by -3 degrees F
Water temperature
on Tuesday = changed by 3 degrees F
We can see that
the total change of water temperature from Sunday to Tuesday is:
-3 + 3 = 0
Therefore there
is zero overall change. There the integer which represents the temperature
change is “0”.
Since the overall
change in water temperature is zero, hence the temperature on Sunday and on
Tuesday is similar.
Water temperature
on Tuesday = 78 degrees F
