Answer:
d
Step-by-step explanation:
Given:
In triangle OPQ, o = 700 cm, p = 840 cm and q=620 cm.
To find:
The measure of angle P.
Solution:
According to the Law of Cosines:

Using Law of Cosines in triangle OPQ, we get




On further simplification, we get




Therefore, the measure of angle P is 79 degrees.
3(y-2) + 2(y-2) = 5(y-2)
Both terms have the base (y-2), so they can be added together.
3 + 2 = 5
A,C,D are equivalent to 18m -12 as solving each of them will give you 18m-12.