Answer:

Step-by-step explanation:
If there are two variables together, you will have to multiply them.

Replace x and y accordingly:

Step-by-step explanation:
f(x) = —x^2 – 3x
f(10)={-10}²-3×10=100-30=70
Answer:
Step-by-step explanation:
∠CBA + ∠ABD = 180 {linear pair}
2x - 6 + x +1 = 180
3x -5 = 180
3x = 180 +5
3x = 185
x = 185/3
x = 61 2/3

It is primarily rotation that does not preserver orientation, since a rotating object's perspective on its surroundings changes with each step of the rotation slightly.