Solve.Enrollment figures at a community college showed an increase from 40,673 credit hours in one year to 75,455 credit hours in the next. Round each number to the nearest thousand to estimate the increase. 

A. 35,000 credit hours
B. 34,900 credit hours
C. 34,000 credit hours
D. 34,800 credit hours


Answer: C

Mathematics

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Solve.The power that a resistor must dissipate is jointly proportional to the square of the current flowing through the resistor and the resistance of the resistor. If a resistor needs to dissipate  of power when  of current are flowing through the resistor whose resistance is  find the power that a resistor needs to dissipate when  of

current are flowing through a resistor whose resistance is 

A. 12 watts
B. 18 watts
C. 6 watts
D. 30 watts

Mathematics

Graph the hyperbola.9x2 = 4y2 + 36

A.

B.

C.

D.

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Write y as an affine combination of the other points listed.v1 = , v2 = , v3 = , y = 

A. y = 2v1 + 3v2 - 4v3 B. y = 7v1 + 3v2 - 4v3 C. y = -3v1 - 2v2 + 6v3 D. y = 3v1 - 4v2 + 2v3

Mathematics

Find the dot product v ? w.v = 2i + j - 2k and w = i + 2j - 2k

A. 8 B. -8 C. 4 D. 23

Mathematics