<span>Let the number be x.
The quotient of negative 1 and the product of a number and 21 is -1/21x</span>
Answer: 1
Step-by-step explanation:
Answer: Ana will hit the water after 3 seconds.
Step-by-step explanation:
The exercise gives you the following function which models Anna's height above the water (in meters) after diving "x" seconds:

You can rewrite the function with
:

In order to calculate the number of seconds Ana will hit the water after diving, the procedure is:
- Substitute
into the function:

- Solve for "x".
By the Zero Product Property, you know that if
, then
or
.
Then you get:

- Choose the positive value (
)
Then, Ana will hit the water after 3 seconds.
Answer:
the quickest way would be to "complete the square"
on x^2 + 5x - 7
you will end up with (x+2.5)² = 13.25
or
y = (x+2.5)²-13.25
the vertex
VERTEX: (-2.5,-13.25)
Solution/X-Intercepts: -6.14 AND 1.14
Step-by-step explanation:
Answer:
a^6/(b^12c^3d)
Step-by-step explanation: