Answer:
3 x (x) 8 + 4 = 18x
Step-by-step explanation:
Underline and box the words that mean addition, subtraction, division, and multiplication in the sentence. You can underline the words that fit any of these categories using your knowledge
<h3>
Answer: Parallelogram</h3>
You could use the parallelogram rule to add the vectors, or you could use the tip-to-tail method (your textbook might call it the "head to tail method" but it's the same idea).
An example of the parallelogram method is shown below with adding the vector u = (-4,4) in red to the vector v = (8,2) in blue to get the vector w = (4,6) in green. The green resultant vector is one of the diagonals of the parallelogram
Side note: The other diagonal is either u-v or v-u depending on your reference point.
I'm thinking by "absolute value", you mean the magnitude. That is, the magnitude is the size of the vector on the complex plane. We can use the Pythagorean Theorem to calculate that. You treat the real values as your "x", and the imaginary part as your "y".
sqrt(7^2 + 12^2)
sqrt(49 + 144)
sqrt(193)
Answer:
6x² + 36x + 22
Step-by-step explanation:
2 faces (x + 3) by (x + 7), area of both these faces 2(x+3)*(x + 7)
2 faces (x + 3) by (x - 1), area of both these faces 2(x+3)*(x - 1)
2 faces (x -1 ) by (x + 7), area of both these faces 2(x-1)*(x + 7)
Whole surface area is
2(x+3)*(x + 7) + 2(x+3)*(x - 1) + 2(x-1)*(x + 7) =
=2(x² + 3x +7x +21) + 2(x² +3x -x - 3) + 2(x² - x +7x -7)=
=2x² <em>+ 20x </em>+42 + 2x² <em>+ 4x</em> - 6 + 2x² <em>+ 12x</em> -14 =
= 6x² + 36x + 22