Air consists of 78% nitrogen, 20% oxygen, 1% water vapor, 0.97 % inert gases and 0.03% carbon dioxide and other gases. How many solvents are present in air? a.1
b.2
c.4
d.5
e.3

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: