You need to calculate the total surface area of the rectangular prism. There are 6 faces total, the two on the top and the bottom will be the same while the area of the other four sides will be the same. Starting with the top and bottom, 8x8=64in^2. Now multiply this by two to get 128in^2. Now the sides will be 8x10=80in^2. Multiply this by four to get 320in^2. Now add 128in^2 plus 320in^2 to get 448in^2.
The <em><u>correct answer</u></em> is:
Explanation:
The Quadratic Formula is
,
where a, b and c are the coefficients of a quadratic equation written in standard form, or 0=ax²+bx+c.
This means that first, we need to make our equation equal 0.
We have
-2 = -x + x² - 4
To make this equal 0, we must cancel the -2. We do this by adding 2:
-2+2 = -x + x² - 4 + 2
0 = -x + x² - 2
Now we write this in standard form. This means the x² term must come first, then the x term, then the constant:
0 = x²-x-2
This makes a = 1, b = -1 and c = -2. We then plug this into the quadratic formula.
Step-by-step explanation:
3x²-3x+x-1=0
3x(x - 1) + 1(x - 1) = 0
(x - 1)(3x + 1) = 0
Either x - 1- = 0, then x = 1
or 3x + 1 = 0, then x = -1 3
x = 1 or -1 3
The answer to the question is A
The items below show the complete steps as to how this is being answered.
1. 3x - 4 = 14 >>>> Given
2. 3x - 4 + 4 = 14 + 4 >>>
Step number 2 above is an addition property of equality. Both sides of the equation are added with 4.
3. Simplifying >>>
3x = 18
4. 3x/3 = 18/3 >>>> Division property of equality
5. >>>> Simplifying,
x = 6
Hence, the order of the choices as answers is C, E, B, A, D.
