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One hundred liters of a 50% solution of a chemical mixture is obtained by mixing a 60% solution with a 20% solution. Using a system of linear equations determine how many liters of each solution are required to obtain the 50% mixture. Solve the system using matrices.
Please be detailed and specific to answer these questions: 1. Describe the significance of the product/service continuum. 2. Describe the tradeoffs between too short a test market and too long a test market.
Can you think of specific policies that could achieve the kinds of shifts that you would favor?
Consider the farmer in Exercise 7 whose field borders the river. Assume he wants the area of the plot to be 800 square feet. What should its dimensions be if he wants to use the least amount of fencing?
In a genetics experiment 5 flowers out of 8 were bicolor, and the rest were solid color. If 3 of the flowers are selected at random without replacement, what is the probability that all 3 are bicolor?
Lisa typed a 1000-word essay at an average rate of 20 words per minute.If she started typing at 6:20 p.m. and did not take any breaks, at what time did Lisa finish typing the essay?
What is the volume of the solid generated by rotating about the x -axis the plane region bounded by y = - x 2, y = 0, x = - 1, and x = 1?
marta's checkbook shows that she wrote a check for 987$ for building materials. what was the price of the materials if the sale tax is 5% ?
an airplane flies 490miles with the wind and 330 against the wind in the same length of time. if the speed of the wind is 20, what is the speed of the airplane in still air?
Find the area of the lateral surface over the curve C in the xy-plane and under the surface z = f(x,y), where the lateral surface area is is given by the integral below.
the perimeter of a rectangular garden is 98 feet. The length f the garden is 4 feet more than twice the width. What is the length of the garden
consider the following data for a clinical
find a function that models the area of the window.
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