the value of x is 90 - 20 aka 70*, these are complementary angles
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a it is the sum of the initial amount and the additional amount after d days.
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Another question on Mathematics
Mathematics, 21.06.2019 16:30
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?