M∠aoc=104 ∘ space, m, angle, a, o, c, equals, 104, degree m ∠ a o b = 7 x + 3 0 ∘ m∠aob=7x+30 ∘ space, m, angle, a, o, b, equals, 7, x, plus, 30, degree m ∠ b o c = 9 x + 4 2 ∘ m∠boc=9x+42 ∘

Which statement best describes the polynomial

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?