Answer:
Sound propagates through air as a longitudinal wave. The speed of sound is determined by the properties of the air, and not by the frequency or amplitude of the sound. Sound waves, as well as most other types of waves, can be described in terms of the following basic wave phenomena
N represents which term
so we can have the 1st, 2nd, 3rd, etc, to the nth term
so n has to be all integers starting with 1 and up
so that would be the option: "All integers where n≥1"
answer is 2nd option
Answer:
An obtuse triangle is a triangle that has a single obtuse angle, which is an angle that measures more than 90 degrees and less than 180 degrees. Obtuse triangles, also referred to as oblique triangles, can be recognized by their having a single significantly larger angle and two smaller angles. Since every triangle has a measurement of 180 degrees, a triangle can only have one obtuse angle. You can calculate an obtuse triangle using the lengths of the triangle's sides.
Square the length of both sides of the triangle that intersect to create the obtuse angle, and add the squares together. For example, if the lengths of the sides measure 3 and 2, then squaring them would result in 9 and 4. Adding the squares together results in 13.
Square the length of the side opposite the obtuse angle. For the example, if the length is 4, then squaring it results in 16.
Step-by-step explanation:
