Answer:
(5, 4)
Step-by-step explanation:
The equation can be written in vertex form by adding and subtracting 25:
y = -(x^2 -10x +25) -21 +25
y = -(x -5)^2 +4
Then the vertex can be identified as (5, 4).
Answer:
12: 144
Step-by-step explanation:
As it fits all requirments.
Answer:
13655.90016
Step-by-step explanation:

Answer:
C) Z
Step-by-step explanation:
In the right triangle, X and Y are side lengths, while Z is the hypotenuse, so C is the correct answer.
Multiplying a negative number and another negative number makes the product positive.
So (-2.1)*(-1.4) = 2.94