Precalculus

All new and solved questions in Precalculus category

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Find the union of the intervals [-17, 20] and (-16, 21)
Find the union of the intervals [-17, 20] and (-16, 21).as much detail and everyway to possibly answer it. thanks much love...
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I need help with a Matrix Algebra problem A small school has 100 students who occupy three classrooms A, B, and C
I need help with a Matrix Algebra problem A small school has 100 students who occupy three classrooms A, B, and C. After the first period of the school day, half the students in room A move to room B, one-fifth of the students in room B move to room C, and one-third of the students in room C move t...
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Find a number k satisfying the given condition
Find a number k satisfying the given condition.x - 5 is a factor of x^4 - 5x^3 - kx^2 + 2x + 40...
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Populations whose growth is limited can often be modeled using the logistic equation, which has the form P(t)=(A)/(1+Be^(-Ct)) Where A, B, C, are positive constants
Populations whose growth is limited can often be modeled using the logistic equation, which has the form P(t)=(A)/(1+Be^(-Ct)) Where A, B, C, are positive constants.a.)What is the initial population in terms of constants?b.)What is the limiting population in terms of constants?c.) Sketch the graph o...
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Confused
A rectangular package to be sent by the U.S. Postal Service can have a maximum combined length and girth (perimeter of a cross section) of 132 inches (see figure).(a) Write the volume V of the package as a function of x.V = What is the domain of the function?(b) Use a graphing utility to graph your ...
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Given the following, determine the maximum, minimum, and x-intercepts in the interval [-2p,2p]....
Given the following, determine the maximum, minimum, and x-intercepts in the interval [-2p,2p].y=3cos(x/2)...
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Appendix C solutions - Larson's Calculus ninth edition?
Is there somewhere to get the solutions to Larson's Calculus (9th edition) Appendix C (the precal review)?...
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WEB ASSIGN PRE CAL HW NEED HELP
Find allsolutions of the equation. (Enter each answer in the form θ + 2πk, 0 ≤ θ < 2π. If there are any unused answer boxes, enter NONE in the last boxes.) 4 TOTALSOLUTIONS IN ORDER FROM LEAST TO GREATEST...
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I need to find a polynomial with real coefficients Degree 2, with 2 as the only real zero
I need to find a polynomial with real coefficients Degree 2, with 2 as the only real zero...
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Express the strength S of a beam as a function of x
The strength S of a wooden beam of width x and depth y is given by the formula S=13.8xy^2. A beam is to be cut from a log of diameter 10 in.What is the domain of the function S?...
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Sketch the polar graph of r=2sin2(theta)
Sketch the polar graph of r=2sin2(theta)...
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A MAN PUSHES A LAWN MOWER WITH a force of 35lb exerted at an angle of 43 to the ground. find the...
A MAN PUSHES A LAWN MOWER WITH a force of 35lb exerted at an angle of 43 to the ground. find the horizontal and verticall components of the force...
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Bacterial growth
A certain benign bacterial population is placed in a nutrient solution at noon and triples every hour. If its population is found to be at a certain level at 10 pm onthe same day, then at what time was its population at a third of that level?...
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Trig problem help!
You are standing 48 meters from the base of a building. You estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82°. If the totalheight of the building is another 126 meters above the 86th floor, what is the approximate height of the building? (Round your answe...
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Add or subtract as indicated and write the result in standard form.
(4 - 2i) + (9 + 5i)...
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Y=2cos3x
I need to find amplitude and period of graph y=2cos3xi know amplitude is 2 but what is the period?I also need to graph it from x=0 to x=2piecan you tell me all values of x intercepts on the graph so I can graph it. thank you...
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Ferris wheel problem
Find a formula, using the sine function, for your height h above ground after t minutes on the ferris wheel. A ferris wheel is 34 meters in diameter and boarded in thesix o'clock position from a platform that is 3 meters above the ground. The ferris wheel makes one full revolution every 5 minute...
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Completely stuck
2.1 #92.Number of Rooms The functionN(r) = –1.44r2 + 14.52r – 14.96represents the number N of housing units (in millions) in 2005 that have r rooms, where r is an integer and 2 = r = 9.Source: U.S. Census Bureau• (a)Identify the dependent and independent variable.• (b)Evaluate ...