Decide whether the given matrix could be a probability vector. 

A. Yes
B. No


Answer: B

Mathematics

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Parametrize the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 49 cut by the cone z = .

What will be an ideal response?

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Solve the problem with estimation, but do not use a calculator. Use rounding to make the resulting calculations simple.Estimate the cost to buy a refrigerator for $699, a stove for $759, and a dishwasher for $549.

A. $1800 B. $2100 C. $2000 D. $1900

Mathematics

Find the exact value for x in the interval  that satisfies the equation.  tan (x) = 

A.
B.
C.
D.

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Factor completely, or state that the polynomial is prime.100x2 - 140x + 49 - 9y2

A. (10x - 7 + 3y)(10x - 7 - 3y) B. (10x + 7 + 3y)(10x - 7 - 3y) C. (10x + 7 + 3y)(10x + 7 - 3y) D. prime

Mathematics