
standard form for a complex expression, I assume it means the a + bi form, nothing else
Answer: choice C
Step-by-step explanation:
an=a1+d*(n-1)
so
an=9+(n-1)*(-3)
you can check the answer by plugging in the numbers, for example if n=1, an=9, if n=2 an=6 which is correct.
I think the answer is x2 + 3x -28 and the x2 is x to the POWER of 2
Answer:
In similar figures, the angles are congruent, even if the sides are not. Notice that one angle in each pair of figures corresponds to an angle in the other figure. They have the same shape but not the same size