120 minutes
Step by step:
divide 20 by 2.5 to find how many minutes it takes to drive 1 mile, then multiply that by 15 miles
Given that


,

,

,

Therefore, the true statement is

,
because the cosine and sine are complements.
Answer:
437.3 ft
Step-by-step explanation:
By sine rule:

A quadratic equation could yield one of two types of roots: real and imaginary. Rational roots are whole numbers and fractions, whereas imaginary roots are complex numbers incorporating the 'i' symbol. When you say, the equation has one real root, this means that there are actually two roots but same in value. That would be letter (x-3)(x-3) = 0. Its root is x=3.