Find projv u.v = 7i - 3j + k, u = -4j + 3k
A. - j +
k
B. i -
j +
k
C. - j +
k
D. i -
j +
k
Answer: B
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One model for expenditures at high schools gives the cost C, in dollars per pupil, as a function of the number n of students enrolled. The relationship is
.
?
Find the enrollment and cost that correspond to the minimum cost per pupil. Round your answers to the nearest whole number.
A. An enrollment of 1909 gives a minimum cost of $340 per pupil. B. An enrollment of 340 gives a minimum cost of $1909 per pupil. C. An enrollment of 1911 gives a minimum cost of $344 per pupil. D. An enrollment of 344 gives a minimum cost of $1911 per pupil.
Multiply. Express the product in lowest terms. ?
A.
B.
C.
D.
Find the real solutions, if any, of the equation. Use the quadratic formula.49x2 - 12 = 28x
A. {- ,
}
B. {, -
}
C. {, -
}
D. {- , -
}
Divide. ÷
A.
B.
C.
D.