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Geography, 22.06.2019 14:40
Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite
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Geography, 23.06.2019 08:30
If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?
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Geography, 24.06.2019 09:30
What is the radius of a circle whose equation is (x + 5)^2 + (y β 3)^2 = 42? 1. 2 units 2. 4 units 3 .8 units 4. 16 units
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Geography, 24.06.2019 15:10
What characteristic of the basin that feeds the congo river system affects movement in central africa? a. the center of the basin is a dense rain forest. b. it is the center of ethnic conflict in the area. c. wildlife on the savanna makes it too dangerous to travel. d. the basin is surrounded by desert.
Answers: 3
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