<h2>Explanation:</h2><h2 />
Here we have to compute the dot product:

We know that:

So for any two vectors:

The dot product:

Therefore:

Answer:
The simplified form of
.
Step-by-step explanation:

In the equation x is the feet of width.
If the original width is 2 feet, then X^2 = 2^2 = 4
If the width changes to 4 feet, then x^2 becomes 4^2 = 16
The change is 16 - 4 = 12
The answer should be B. $12 per foot.
Most textbooks interpret standard form of a quadratic function to be as follows:
f(x) =

In the function f(x) =

, notice we do not have a value for "c". Just place a "0" in for the c and you have standard form.
the criteria for standard form:
1. All like terms are combined
2. Degree must drop from left to right
3. The leading coefficient cannot be equal to zero.
Answer:
-17 x + 60 y + 33
Step-by-step explanation:
3(7-3x+8y)-4(2x-9y-3)
Distribute
21 -9x+24y -8x +36y +12
Combine like terms
21+12 -9x-8x+24y +36y
33 -17x +60y
Rearringing the terms
-17 x + 60 y + 33