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1. Solve by substitution or elimination method:
3x - 2y = 8-12x + 8y = 32
2. Solve by substitution or elimination method:
7x - 5y = 14-4x + y = 27
3. Solve by substitution or elimination method:
-4x + 3y = 512x - 9y = -15
4. A university bookstore recently sold a wire bound graph-paper notebook for $2.50 and a college-ruled notebook for $2.30. At the start of spring semester, a combination of 50 of these notebooks was sold for a total of $118.60. How many of each type were sold?
5. Write a system of equations for each of the following, and solve each of the systems.
i. A unique solution.
ii. An infinite number of solutions.
iii. No solution.
To get a C in history, Nandan must average 74 on four tests. Scores on the first three tests were 69, 75, and 60. What is the lowest score that Nandan can get on the last test and still receive a C?
A record for free-fall to the ground without a parachute is 175 ft. How long did the fall take, using the formula s=16t^2
Suppose that you need a loan of $160,000. find the total cost of all the monthly payments for the loan below. assume that the loans are fixed rates.
The sum of the measure of an angle and five times its complement is 300 . What is the measure of the angle?
Find the union of two sets.
Solving the problem of maximum height.
an increase in value of any collection is not guaranteed for a variety of reasons. if you are a collector please use
The table shows how many inches are in varying numbers of centimeters. Use cent for x and in for y and graph the points. What is the slope of the graph? what is the meaning of the slope?
In exercise (1), show that W is a subspace of V. Let { } be a basis of W. Show that { } is a basis of V.
Find the exact area under the graph of f(x) = x2 - 2x + 2 on the interval [-1 , 2] using limits with a right sum. Correct notation is crucial.
let x be a continuous random variable with the pdf f and the cdf f. assume that fx gt 0 for all real numbers x. define
Multiplying the rational equation.
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