Answer:
10 hours
Step-by-step explanation:
Two boats leave a port at the same time, one going north and the other traveling south.
<u>Southbound boat rate</u> = 40 mph
The northbound boat travels 18 mph faster than the southbound boat.
<u>Northbound boat rate</u> = 40 + 18 = 58 mph
Two boats rate = 40 + 58 = 98 mph (this means they are apart 98 km after one hour)
Total distance = 980 miles
Total rate = 98 mph
Time 
hours
Answer: its A
Step-by-step explanation:
Answer:
6x^2 + 3x + 21 = 3(2x^2 + x + 7)
Step-by-step explanation:
We have this as follows;
6x^2 + 3x + 21 = 3(2x^2 + x + 7)
The quadratic trinomial inside the bracket cannot be factored any further
so we have the present form as the correct answer
Answer:
The angle of elevation is given by,
∅ = 
Step-by-step explanation:
<em>The length ladder is given as 20.75 feet.</em>
<em>The depth of ground is 3 feet below.</em>
The figure formed is that of a right angled triangle.
Let the angle of elevation be ∅.
By trigonometry,
sin(∅) = 
Thus, the angle of elevation is given by,
∅ =
