Solve.0.6x - 0.5(50 + x) = -0.34(50)
A. x = 40
B. x = 80
C. x = 90
D. x = 70
Answer: B
Mathematics
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Find the standard form of the equation of a circle that satisfies the given conditions.Center (0, 6); radius 8
A. (x - 6)2 + y2 = 64 B. x2 + (y + 6)2 = 8 C. (x + 6)2 + y2 = 64 D. x2 + (y - 6)2 = 64
Mathematics
Determine if matrix A is invertible.A = 
A. Not invertible B. Invertible
Mathematics
Find the center and the radius of the circle.x2 + y2 - 4x - 8y + 11 = 0
A. (-2, -4); r = 3 B. (2, -4); r = 3 C. (2, 4); r = 3 D. (-2, 4); r = 3
Mathematics
The lengths of two vectors a and b, and the angle ? between them, are given. Find the length of their cross product, |a x b|. Write the answer correct to three decimal places.
|a| = 0.12, |b| = 1.25, ? =85°
Mathematics