Posted by rk on October 04, 2002 at 10:11:25:
Can u please provide step by step solutions
1/ If y varies partly directly as x and partly inversely as x, and y=2 1/2 when x=1, and y=2 when x=2, find an equation
connecting the two varibles.
2/ y is the sum of two quantities, one of which varies as x and the other x squared. When x=4, y=16, and when x=6,
y=30.Express y in terms of x.
3/ Two varibles x and y are related by the formula y=ax+b/x squared. If y=1 1/5 when x=5 and y=2 1/20 when x=10, find
the value of y when x =15
4/ The cost, C, of publishing a bulletin consists of two parts:
-a fixed charge,a,for setting up the type, independent of the number of copies published
- a charge for printing and paper,proportional to the number of copies printed,n. If the cost of 500 copies is $20 and the
cost of 750 copies is $25,find the cost of 900 copies.
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