Add the n terms together n + 2n + 2n = 5n
Add the numbers together - 3
The answer is 5n - 3 or D <<<=====
That equals 18 since the distance from zero is 18.
Hope i'm the brainliest!
Answer:
B.
Step-by-step explanation:
<em>Volume for a cube is </em>
V= 
<em>s = side length</em>
<em>Area for a cube is </em>
<em>A = </em>
Answer:
It would be $390 for the 4 hours and the cleaning fees. And the slope would be -13 if you are going from 12 to 7 but would be 13 if you are going from 7 to 12...
Step-by-step explanation:
273 = 1·273 = 3·91 = 7·39 = 13·21
The factors that differ by 8 are 13 and 21.
The length is 21 inches; the width is 13 inches.
_____
If you're going to write an equation for width (w), you can write it as
w(w+8) = 273
and simplify it to
w² +8w -273 = 0
Solving this by factoring requires you find the factors of 273 that differ by 8, as above.
You can also solve by completing the square or using the quadratic formula. Those methods will tell you w is either of -21 or 13. Only the positive solution is applicable.
Another method I use mentally is to think of the equation in terms of the average of length and width (x). Then the area is
(x-4)(x+4) = 273
x² -16 = 273 . . . . . this is a much easier quadratic to solve
x² = 289
x = 17 . . . . . . . . you know this because you have the squares of small numbers memorized.
Then the dimensions are 17-4 = 13, and 17+4 = 21.
