Answer:
c
20/40=
so you put it into ratio form 1:2
therfore 20 is the answer
Answer:
The Precambrian (or Pre-Cambrian, sometimes abbreviated pЄ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic eon, which is named after Cambria, the Latinised name for Wales, where rocks from this age were first studied. The Precambrian accounts for 88% of the Earth's geologic time.
Explanation:
Answer:
tangent of angle I = 
/
) or 
Explanation:
tangent = opposite/adjacent
we need to solve for the opposite side, using pythagorean theorem
()^2 + b^2 = 9^2
59 + b^2 = 81
b^2 = 22
b =
tangent = opposite/adjacent
tangent of angle I = /) or
Answer:
the question is incomplete
Explanation:
