Answer:
Option D. two complex roots
Step-by-step explanation:
we know that
In a quadratic equation of the form the discriminant D is equal to
in this problem we have
so
substitute the values
The discriminant is negative
therefore
The quadratic equation has two complex roots
If 2/3 of the cards are face-up, then 2/3*12=8 cards are face-up. The remaining 12-8=4 cards are therefore face down.
Answer:
x = 50 in
Step-by-step explanation:
Since it is a right triangle we can use the Pythagorean theorem
a^2 + b^2 = c^2
14^2 + 48^2 = x^2
196 + 2304 = x^2
2500 = x^2
Take the square root of each side
sqrt(2500) = sqrt(x^2)
50 =x
x = 50 in
Answer:
Step-by-step explanation:
Given
The tower is at a height of
the angle of depression is
Suppose the surfer is x ft away from the base of the tower
Therefore, the surfer is at a distance of 19.31 ft from the base of the tower.