The solutions to the given quadratic equation can be determined using quadratic formula.

b =coefficient of x term = -2
a = coefficient of squared term = 1
c = constant term = 10
Using the values in the above formula we get:
So the correct answer to this question is option A
Answer:
angle of depression = 2.1⁰
Step-by-step explanation:
1 mile = 5280 ft
Hence angle of depression = 90 - ∅
Where ∅ is angle of depression
Tan ∅ = (5 x 5280)/ 950
∅ = Tan₋¹ (27.789474) = 87.9⁰
Hence angle of depression = 90 - 87.9 = 2.1⁰
-1.4 is less than -1/2 because -1/2 is -.5 as a decimal