Evaluate.-(80) + (-13)0

A. -5
B. -2
C. 0
D. 1


Answer: C

Mathematics

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Insert <, >, or = to make the statement true.-7 _____ -5

A. = B. < C. >

Mathematics

Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 12 seconds, the middle planet makes a revolution in 20 seconds, and the outermost planet makes a revolution in 28 seconds. After how many seconds will the planets be aligned again?

A. 210 seconds B. 630 seconds C. 420 seconds D. 840 seconds

Mathematics

Assume that the rate of change of the unit price of a commodity is proportional to the difference between the demand and the supply so that

?

?
where k is a constant of proportionality. Suppose that , , and . Find a formula for ?p?(?t).

What will be an ideal response?

Mathematics

Solve the problem.Determine whether the ordered triple  is a solution of the system of equations.9x - 9y - 6z = -116x + 3y - 3z = 1 x - y + 2z = -3

A. No B. Yes

Mathematics