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Anne, Betty and Carol went to their local produce store to buy some fruit. Anne bought one pound of apples and two pounds of bananas and paid $2.11. Betty bought two pounds of apples and one pound of grapes and paid $4.06. Carol bought one pound of bananas and two pounds of grapes and paid $4.45.
(a) Let x = price of a pound of apples, y = price of a pound of bananas and z = price of a pound of grapes. Write out 3 linear equations representing the purchases of Anne, Betty and Carol.
(b) Write out the augmented matrix for your system of 3 linear equations of part (a).
(c) Use elementary row operations to row reduce the augmented matrix of part (b) to a reduced row-echelon matrix.
(d) What is the price per pound for each of the three fruits?
A sell a watch to B at gain of 20% and B sell to C at loss of 10%. if C pays @ 432, how much did A pays for it.
Range of f(x) =4 x +2 x +1 is?
2x=3+x
Let u = sin(x). Then du = cos(x) dx. So you can now antidifferentiate e^u du. This is e^u + C = e^sin(x) + C. Then substitute your range 0 to pi. e^sin (pi)-e^sin(0) =0-0 =0
which ratio is largar. 1. 15:16 or 24:25
The government is auctioning off oil leases at two sites. At each site, 100,000 acres of land are to be auctioned. Cliff Ewing, Blake Barnes and Alexis Pickens are bidding for the
Change of base: The final topic that we have to look at in this section is the change of base formula for logarithms. The change of base formula is,
If a school has lockers with 50 numbers on each combination lock, how many possible combinations using three numbers are there.
Question. Determine the position and nature of stationary points of the function? f(x,y)= y/x -x 2 +y 2
Now come to addition and subtraction of rational expressions. Following are the general formulas. (a/c) + (b/c) = (a + b)/c
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