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Jim S.'s Resources

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Formula Problem (answer)

If you paid 12,000$ for the car and it depreciates 10% after the first year it's now worth 12,000-.1*12,000 or 12,000(1-.1) for the second year it's worth 12,000*(1-.1)2 and for the third it's 12,000*(1-.1)3 so now interns of O and P and Y we have   Depreciated value =O*(1-P)y  make...

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Ash       β is defined as the covariance between the returns of the particular stock and the benchmark could be the S&P 500 or the Dow. Excel has a covariance function all you have to do is supply the data.        It measures the relationship between...

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Probabilities (answer)

Megan,             The probability of detecting a plane is p then the probability of not detecting is 1-p and since each radar system is independent the probability of all six radars not detecting the plane is (1-p)6 =1.17*10-7 .   Jim

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The first set of equations when put slope/intercept form are y=2-x and y=-x and since the slopes of the two lines are the same (-1) they will not intersect so there is no solution. The second set can be written as y=3-x and y=x-3 so 3-x=x-3 or 2x=6, x=3 and y=0 is the solution. This set of lines...

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Lisa,         I'm going to assume that this launch takes place in the earths gravitational field g=-32.2ft/sec2.   so d=V0t-1/2gt2 where d= distance traveled in the y direction, V0= the initial speed =95 ft/sec. This equation describes the position of the rocked...

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Jalen,             There are at least two ways to keep these kinds of problems straight the first is intuitive and visual...if you picture the integers on a line starting way to the left say at -500 and continuing to the right by adding one each time then the next...

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Hannah,            An easy way to sort out the vectors is take them one at a time and sketch them. They are given in polar form you need to convert them to their x and y components.    First:position vector magnitude 1390 m at 145 deg second:...

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Kaitlynn,          Using the product rule gives dy/dx=x2 *(-e-x)+e-x(2x)=-e-x(-2+x)*x. This is the equation for the tangent to the original curve, the tangent is horizontal when dy/dx=0 so setting -e-x(-2+x)*x=0 gives x=0, 2 and ∞ are the points...

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