Find the indicated cross product.v = 5i + 4j, w = 2i - 5kFind v × w.

A. -20i + 25j + 8k
B. -8i + 20j - 25k
C. -20i + 25j - 8k
D. 10j - 20k


Answer: C

Mathematics

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Write the number in scientific notation.0.000411

A. 4.11 × 10-3 B. 4.11 × 104 C. 4.11 × 10-5 D. 4.11 × 10-4

Mathematics

Solve the problem.The sum of the digits of a 3-digit number is 18. The units digit is one less than the tens digit and the tens digit is one less than the hundreds. What is the number?

A. 876 B. 765 C. 865 D. None of these

Mathematics

Find the center and radius and draw the graph.(x + 5)2 + (y - 5)2 = 4

A.

center (-5, 5); radius 2
B.

center (5, 5); radius 2
C.

center (5, -5); radius 2
D.

center (-5-5); radius 2

Mathematics

Solve the problem.Find the equation of a circle with center at (-6, 2), passing through the point  Write it in center-radius form.

A. (x + 6 )2 + (y - 2)2 = 25 B. (x + 6 )2 + (y - 2 )2 = 5 C. (x - 6 )2 + (y + 2 )2 = 25 D. (x - 6 )2 + (y + 2 )2 = 5

Mathematics