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A chemist needs to mix a 75% saltwater solution with a 50% saltwater solution to obtain 10 gallons of a 60% saltwater solution. a. Write a system of equations to find how many gallons of each solution must be used. b. Graph both equations on the TI calculator and find the intersection point. Report the equations you put in for Y1 and Y2 and your Window settings. c. Solve the system using the substitution method. Does this answer match the answer you got on your graphing calculator? d. Solve the system using the addition method. Compare your answer to parts b and c. e. Which method do you prefer for this problem?
A fitness ball is delivered in a flat package witha hand pump. The pump inflates the ball at a rate of 280 cmcubed per pump, to a diameter of 28cm. How many pumps are needed to inflate the ball? Please explain how you got it.
If x is the number of trees and y is the average yield per tree find a linear equation that gives the yield y in terms of the number of trees, x.
If an object is dropped from a height of 50 feet, the function d = -16t^2 + 50 gives the height of the object after t seconds. what does the input value of the function represent? what does the output value of this function represent?
Determine the Fourier series for this function and find the period, frequency and angular frequency of the waveform
Draw the resultant vector and use trigonometry to find the magnitude and direction of the resultant force with respect to the x-axis.
use Euler's Method with h=0.01 to approximate y(0.12)for the initial value problem dy/dx = e^-xy, y(0)=1
after an aggressive marketing campaign in the local community poes tv amp repair co. discovered that their cost can now
What makes an equation linear? If an equation is linear, must it be a function? If so, explain why. If not, then provide a counterexample and explain why it is not a function.
Chemist has 400ml of solution of which 80% is alcohol. How much water needs to be added to dilute solution to 50% alcohol? Please provide step by step breakdown so I can understand how this is solved.
a 52-year-old client asks an accountant how to plan for his future retirement at age 62. he expects income from social
Establish the independence of n events - We have two coins the first is fair and the second two-headed. we pick one of the coins at random. we loss toss it twice and heads shows both times. Find the probability that the coin picked is fair.
Probability: Working with the standard distribution curve. A company installs 5000 light bulbs, each with an average life of 500 hours and a standard deviation of 100 hours, and a distribution approximated by a normal curve
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