Answer:
The two real solutions are and
Step-by-step explanation:
The equation is a quadratic function of the form that can be solved by using the Quadratic Formula.
The plus and minus mean that the equation has two solution.
In order to identify is the equation has two real solutions we use the discriminant equation . Depending of the result we got:
1. If the discriminant is positive, we get two real solutions.
2. if the discriminant is negative, we get complex solutions.
3. If the discriminant is zero, we get just one solution.
Solution:
The equation has a=9, b=0, and c=-4
Using the discriminant equation to know if the quadratic equation has two real solutions:
The discriminant is positive which mean we get two real solutions.
Using the Quadratic Formula
then
and
Because the distance to both chords are the same (5.70) and both chords are 90 degrees from the 5.70 line, both chords are identical.
Chord AB = 5, so chord CD is also 5.
Hold on one second and i'll give you the answer.
Answer:
-525 feet
Step-by-step explanation:
If a submarine was below sea level, that would mean that it would be at an elevation of negative feet down, so if it's 800 feet below sea level, it's elevation would be -800.
to ascend means to rise, so the submarine would be moving +275 feet (going higher, closer to sea level)
so you can make out this equation: -800 + 275
this would equal: -525