QUESTION 10 Write an equation that expresses the relationship. Use k as the cons
ID: 2912723 • Letter: Q
Question
QUESTION 10
Write an equation that expresses the relationship. Use k as the constant of variation.
The weight of a body above the surface of the earth is inversely proportional to the square of its distance from the center of the earth. What is the effect on the weight when the distance is multiplied by 7?
The weight is multiplied by 7
The weight is divided by 49
The weight is multiplied by 49
The weight is divided by 7
QUESTION 33
Solve the problem.
Two recording devices are set 2600 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 300 feet from point B, a small amount of explosive is detonated. The recording devices record the time the sound reaches each one. How far directly north of site B should a second explosion be done so that the measured time difference recorded by the devices is the same as that for the first detonation?
690 feet
1362.39 feet
1264.91 feet
3502.38 feet
QUESTION 43
106,000 people
53,000 people
1060 people
1059 people
QUESTION 45
2
7
QUESTION 21
Convert the equation to the standard form for a parabola by completing the square on x or y as appropriate.
x2 + 4x + 8y + 36 = 0
(x - 2)2 = 8(y + 4)
(x + 2)2 = -8(y - 4)
(x + 2)2 = -8(y + 4)
(x - 2)2 = -8(y + 4)
QUESTION 23
Nonlinear
Linear
QUESTION 35
Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.
f(x) = 2x3 - 5x2 + x + 4
2 or 0 positive zeros, 1 negative zero
2 or 0 positive zeros, 1 or 0 negative zeros
2 or 0 positive zeros, 2 or 0 negative zeros
3 or 1 positive zeros, 3 or 1 negative zeros
QUESTION 38
Identity
Conditional equation
Inconsistent equation
The weight is multiplied by 7
The weight is divided by 49
The weight is multiplied by 49
The weight is divided by 7
Explanation / Answer
1) weight is inversely proportional to the square of its distance
W = K / d^2
when distance is multiplied by 7
W = k / (7d)^2
W = k / 49d^2
wieght is divided by 49
2nd option is correct
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