Recent content by rain

i got it now. thanks a lot. its very helpful.

Sam deposts $10,000 at the beginning of each year for 12 years in an account paying 5% compounded annually. He then puts the total amount on deposit in another account paying 6% compounded semiannually for another 9 years. Find the final amount on deposit after the entire 21 year period. Did...

thanks a lot

for 1) the rate is 11.36% for 2) the interest is $51089.32 am i correct?

I need some help on some finance questions 1) A stock that sold for $22 at the beginning of the year was selling for $24 at the end of the year. If the stock paid a dividend of $0.50 per share, what is the simple interest rate on an investment in thei stock? the simple interest rate formula...

o..okay. so if the question asks for approximation, my answer is correct?If the question just ask for the increase, then .52pi would be correct?

1. The profit function for a compnay is P(x)=-390+24x+5x^2-(1/3)x^3, where x represents the demand for the product(doghouse). Find the approximate change in profit for a 1-unit change in demand when the demand is at a level of 1000 doghouses. Use the differential. -my answer that i got is...

I have some question on elasticity. If the demand function is q=Cp^(-k), where C and k are positive constants. a)Find E. b)if 0<k<1, what does your answer from part a say about how prices should be set to maximize the revenue? c)if k>1, what does your answer from part a say about how...

thanks a lot. people are nice in here.

hm...like you would tie a birthday cake...a cross on top and bottom, 4 strips on the side...do you get what I mean?

I have some calculus problems that I don't know if I did it right. 1)A cylindrical box will be tied up with ribbon. The longest piece of ribbon available is 130cm long, and 10cm of that are required for the bow. Find the radius and height of the box with the largest possible volume. -my...