-9 + pi will be irrational becasue it contains pi
23.2 repeating + sqrt 16 is rational because repeating numbers are rational and sqrt 16 is rational.
There's a special case of the quadratic formula called the Shakespeare Quadratic Formula (2b or -2b) that applies when the linear coefficient is even.

If you're planning on solving a lot of quadratic equations quickly, it's good to know.
Here we have

so


Answer:
There is a circle with a diameter[d] of 2.
Step-by-step explanation:
the Radius=diameter /2=2/2=1 units
now
circumference=2πr=2×π×1=6.29=6 units
area=πr²=3.14 unit²
B. Complementary means totaling 90 degrees, and supplementary means totaling 180 degrees.
The function is :

,
which means that "g of a number" is equal to "negative, the square of that number".
According to the function we calculate g(0), g(-3), g(3) as follows:

This means that we have the points (0, 0), (-3, -9), and (3, -9) lying on the graph of the function.
Answer: (0, 0), (-3, -9), (3, -9)