SOLUTION: (1). Find the compound interest on 10,000 for 12 months at rate of 1% peq month. (2) if x varies directly as y and x=32 at y=2 find the relationshi betwee x and y . Also x

Question 1084923: (1). Find the compound interest on 10,000 for 12 months at rate of 1% peq month. (2) if x varies directly as y and x=32 at y=2 find the relationshi betwee x and y . Also x when y=4 and y when x=64 (3) x-3 is directly proportional to the squere of y and x=5 when y=2, find x when y=6 (my gmail mohdbukar4@gmail.com)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
If the interest rate is 1%/month then 10000*(1+0.01)^12=11,268.05
====================
x=ky
32=k*2
k=16
x=16y
-------------
x=16*4=64 so when y is 4, x is 64
==========
(x-3)=ky^2
(5-3)=k*4
2=4k
k=0.5
==========
when y=6
(x-3)=0.5*36=18
x=21 when y=6
(5,2) and (21, 6); take 3 away from x and 2 is proportional to 4 as 18 is proportional to 36.
RELATED QUESTIONS
1. Find (f-g)(x) if f(x)=x^2-2x-24 and g(x)=x^2-x-30; 2. If f(x)=x+4 and... (answered by stanbon)

Susan invests R45 000 at a simple interest rate of 6% per year. Two years later, she adds (answered by )

If y varies directly as x^2, and y = 2 when x = 1, find y when x =... (answered by Alan3354)

if y varies directly as the square of x, and y = 32, when x = 2, find y when x =... (answered by bucky)

Direct Variations: If y varies directly as the cube of x, and y=32 when x=2, find y=5. (answered by josgarithmetic)

A person wishes to deposit $5,000 per year in a savings account which earns interest of 8 (answered by ikleyn)

1. 3x + y = 6 x - y = 1 2. If x Varies directly as y^2, and x= 20 when y= 2,... (answered by jim_thompson5910)

A businessman deposited ₦500,000 in a bank account at 20% per annum compound interest.... (answered by ikleyn)

if y varies directly as x and y = 10 when x = 1/2, what is the value of y when x =... (answered by robertb)