Solve the equation.log20 (x2 - x) = 1
A. {-4, 5}
B. {-4, -5}
C. {4, 5}
D. {1, 20}
Answer: A
Mathematics
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Solve the equation.
- 5 = 1
A. 42 B. 28 C. -42 D. -28
Mathematics
Solve the equation by making an appropriate substitution.x4 - 20x2 - 125 = 0
A. {- 
, 
, -5i, 5i}
B. {5, i
}
C. {-25, 5}
D. {-5, 5, -i
, i
}
Mathematics
Draw a tree diagram to find the number of possible outcomes.Toss two coins.
A. 1 outcome B. 4 outcomes C. 3 outcomes D. 2 outcomes
Mathematics
Find the center (h, k) and radius r of the circle with the given equation. x2 + 8x + 16 + (y - 1)2 = 25
A. (h, k) = (4, -1); r = 25 B. (h, k) = (-1, 4); r = 25 C. (h, k) = (-4, 1); r = 5 D. (h, k) = (1, -4); r = 5
Mathematics