<span>A helicopter is hovering 100 meters above the ocean. Directly below it, a submarine is at a depth of 200 meters.The altimeter on the helicopter reads 100 meters,which means it is 100 meters above sea level.The altimeter on the submarine reads 200 meters,which means it is 200 meters below sea level</span>
Answer:
25°
Step-by-step explanation:
In isosceles triangle KNM, NL is a perpendicular bisector of angle KNM.
This means

Since

you have

No, find the measure of angles KNL and LNM:

and the measure of angle KNM is

Angles adjacent to the base of isosceles triangle are congruent. The sum of the measures of all interior angles is 180°, then

Answer:
D) 15
Step-by-step explanation:
This is an arithmatic progression.
The formula for the sum of arithmatic progression is

where d is the common difference between successive terms and a is the first term. By applying this formula,
