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anonymous
 one year ago
I need help please..
x varies inversely as v, and x=48 when v=8. Find x when v is 64.
A. x=6
B. x=64
C. x=8
D. x=48
anonymous
 one year ago
I need help please.. x varies inversely as v, and x=48 when v=8. Find x when v is 64. A. x=6 B. x=64 C. x=8 D. x=48

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freckles
 one year ago
Best ResponseYou've already chosen the best response.1inversely think divides x=k/v where k is the constant of variation

freckles
 one year ago
Best ResponseYou've already chosen the best response.1use (x,v)=(48,8) to find the constant k

freckles
 one year ago
Best ResponseYou've already chosen the best response.1then once we obtain k we will go back to x=k/v where we know k now and then replace v with 64 and find x

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1v = k/x 8 = k/48 8*48 = k

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1Now, v = k/x Taking v as 64 and k as 384 v = k/x 64 = 384/x 64x = 384 x = 384/64

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay. I see what you are saying.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.164 times 6 is equal to 384

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1Therefore, x would 6.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you. I understood well! It made more sense. Now, would this still imply to x varies inversely as y^2, & x=4 when y=10. Find x when y=2.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.12 = 100/k 2k = 100 k = 100/2 k = 50

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1I think I made a mistake.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am understanding better. But my answer choices are a. X=16 b. X=5 c. X=80 d. X=100

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1What are your options?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Those are my options.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1Wait! Its x = k/y^2

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1x is 4 and y is 10

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.14 = k/10^2 4 = k/100 4*100 = k 400 = k

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1Now, we have to find x but y is given as 2.. Can you find x ?? k = 400 and y = 2

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1k is 400 and y is 2

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.1Yes absolutely right... Good Job..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think I did this one right. But I got a little confused. ~ You have 332 of fencing to enclose a rectangular region. What is the maximum area? I got a the first time and b the second time.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A. 6889 square feet B. 6885 square feet C. 110,224 square feet D. 27,556 square feet

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.12L + 2W = 332 and L x W = y so from eqn 1, L = 332/2 + W so (332/2 + W) x W = y 166W + W^2 = y when derivative of y = 0 = maximum area y' = 2W + 166 0 = 2W +166 166 = 2W W = 83 therefore as 2L +2W =332 and w = 83, L must =83 also so L x W =A 83 x 83 = 6889 A

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, it is A and I was right the first time?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you! I am understanding much much better.
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