Recent content by rowdy3

By how many days should each activity be reduced the project completion time by 4 days? I have all the parts right except for part B. I thought it was 2 but it's not. What I did was subtract normal time from crash time and it worked for all the problems except B. Here's a link to the table. Any...

What would you expect the nominal rate of interest be if the real rate is 4% and the expected inflation rate is 7%? I did n=4 I=7 (1+.04)= (1+.07)+(1+r) 1.04/1.07 - 1 = -2.80. Is that correct?

Yes I think so.

To capture the actual Rent amount 95% of the time, predictions from the fitted equation should include a margin of error of about plus or minus ______ (round to the nearest ten dollars). $128 $114 (answer) $57 $228 Here's a pic of the table. How did they get the answer...

Evaluate each Definite integral. ∫ lower limit 1, upper limit 8. 3 - y^(1/3) / y^(2/3) ; dy Here's a link if you have trouble understanding my problem. It's #24. http://pic20.picturetrail.com/VOL1370/5671323/23643016/396407299.jpg I did ∫(3*y^(-2/3) - y^(-1/3)) dy from 1 to 8 9*y^(1/3) -...

Use the definite integral to find the area between the x-axis and F(x) over the indicated interval. Check first to see if the graph crosses the x-axis in the given interval. F(x)= 4x-32 ; [5,10] I did y = 0 => 4x - 32 = 0 => x = 8 => graph crosses x-axis at x = 8 Also it is +ve for x > 8...

(2/3)*[2+lnx]^(3/2)+C. Is that right?

Use substitution to find each indefinite integral. ∫ (square root 2 + lnx) / x ; dx I did u=2+ln(x) then differentiate both sides to get du=0+dx/x ∫ (square root 2 + lnx) / x ; dx ∫ (square root u) du ∫ u^0.5 du u^(3/2)/(3/2)+c =(2+ln(x))^(3/2) +c Is the answer right? Thanks.

Find the following. ∫ (2y^(1/2) - 3y^(2)) / 6y ; dy It's number 34 if you want to see it.Thanks. http://pic20.picturetrail.com/VOL1370/5671323/23643016/396306428.jpg I did ∫ [ ( 2√y - 3y² ) / ( 6y ) ] dy = ∫ { [ (2√y ) / (6y) ] - [ (3y²) / (6y) ] } dy = (1/3) ∫ ( 1/ √y ) dy - (1/2) ∫...

Find the following. ∫ (56t^(5/2) + 18t^(7/2))dt. I did (2/7)56 t^(7/2) + (2/9)18t^(9/2) + c = 16t^(7/2) + 4t^(9/2) + c

Find the following. ∫ (v^2 - e^(3v)) dv. I did ∫(V^2-e^(3v)) dv ∫(v^2)dv - I (e^(3v) )dv ∫(v^3)/3- (e^(3v))/3 ∫(v^3-e^(3v))/3 Did I so it right?

Find the equation of the parabola (in standard form) whose vertex is at the origin, has a vertical axis, and passes through the point (-2,5). Thanks y = ax^2 sub in the point (-2, 5) and solve for a 5 = a(-2)^2 5 = a(4) a = 5/4 Final equation is y = (5/4)x^2. Is that right?

Solve the following equation involving a determinant det x (x+2) 9 2x = 0 I did x * 2x - 9(x+2) It came out to 2x^2 - 9x - 18 = 0 Do I have to do anything else like a quadratic equation? I went to a math tutor and he wasn't sure. I scanned the problem and it's number 11...

For the following problem provide the "form" of the partial fraction decomposition for the given fractional expression. You do not have to solve the undetermined coefficients. 4. 2x^2 - 3x + 8 / x^3 + 9x I took an x out and it's no x(x^2+9) My answer is A/X + BX+C/x^2+9 5. x- 7 / x^4 - 16...

Im not allow to use TI-84 anymore and have to use TI-30XA. I need help putting in 50e^(-.00043448 * 5000). I did -.00043348*5000 first and got -2.1674. I have problem with this part. On the TI-84 I can do it but having trouble on my new calculator. I type 50e but it gives me 5.184705529^21. What...