477 Answered Questions for the topic Precalculus Homework
Precalculus Homework Precalculus
11/05/17
How do I solve this problem?
im having a bit of trouble finishing my Precalc homework. The problem is “find a polynomial function with zeros of (-2, 4, 3+i (imaginary number)) I’m really struggling and it’s due tomorrow....
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Precalculus Homework
11/05/17
How do I solve this problem?
im having trouble on my Precalc homework. This is the problem: “a box is formed by removing squares of side length x inches from each corner of a rectangular piece of cardboard 10 inches wide by 16...
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Precalculus Homework
11/05/17
How do I solve this problem?
my precalculus homework has this problem: “x5+x4-3x3-11x2-28x-60=0 hint:2i is a solution” Im not sure how to solve this
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Precalculus Homework
11/05/17
How can I figure this problem out?
So my problem on my precalculus homework is “Rodney shoots a basket at 6.5ft above the ground. It’s initial velocity is 25 feet per second. How many seconds after shooting does the ball go through...
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Precalculus Homework
11/03/17
A penny is thrown from the top of a 28.9-meter building and hits the ground 2.71 seconds after it was thrown. The penny reached its maximum height above the gro
A penny is thrown from the top of a 28.9-meter building and hits the ground 2.71 seconds after it was thrown. The penny reached its maximum height above the ground 0.56 seconds after it was...
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10/30/17
Find an nth degree polynomial function with real coefficients satisfying the given conditions
n=3
-2, and -2+3i are zeros
leading coefficient is 1
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10/30/17
A certain culture initially has 25 bacteria and is observed to double every 5 hours
a) Find an exponential model n(t) = n02t/a for the number of bacteria in the culture after t hours.
b) Estimate the number of bacteria after 18 hours.
c) After how many hours will the bacteria...
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10/30/17
After how many days are there only 5 g remaining?
A 15 g sample of radioactive iodine decays in such a way that the mass remaining after t days is given bym(t) = 15e−0.087t, where m(t) is measured in grams.
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10/25/17
Use the Laws of Logarithms to expand the expression (a and b), or combine the expression (c and d)
a) log (a2 / b4 √c)
b) ln (√x2 +4 / (x2 + 1)(x3 - 7)2)c) 4 ln x −1/3 ln(x2 + 1) + 2 ln(x − 1)
d) log 5 + 2 log x + 3 log(x2 + 5)
10/25/17
If $3,500 is invested at an interest rate of 6.25% per year compounded continuously, find the value of the investment after
A.) 3 years
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10/24/17
Doctors use radioactive iodine as a tracer in diagnosing certain thyroid gland disorders. This type of iodine decays in such a way that the mass remaining after
m(t) = 6e−0.087t
where m(t) is measured in grams.
a) Find the initial mass (mass at time t = 0).
b) How much of the mass remains after 20 days?
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10/18/17
Find the intercepts and asymptotes
a) r(x) = x − 2 / x2 − 4x
b) s(x) = x2 − 2x + 1 / x3 − 3x2
10/15/17
Word Problem
Beth has 230ft of fencing available to make a rectangle enclosed in an open field. The enclosure needs to have an area of 3000ft^2. If she has to use all 230ft of fencing, what dimensions should...
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10/14/17
Word Problem Help!
A fourth-grade class decides to enclose a rectangular garden, using the side of the school as one side of the rectangle. What is the max area that the class can enclose using 32 ft of fence? What...
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10/14/17
Pre-Calc Help!
The spreag from of oil leaking from a tanker is in the shape of a circle. If the radius r (in feet) of the spread after t hours is r(t) = 200sqt(t), find the area A of the oil slick as a function...
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Precalculus Homework
10/11/17
Find a function that models the length L of her shadow in terms of her distance d from the base of the lamp.
A woman 5 ft tall is standing near a street lamp that is 14 ft tall
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10/05/17
Two polynomials P and D are given.
Use either synthetic or long division to divide P(x) by D(x), and express the quotient P(x)/D(x) in the form P(x)D(x)= Q(x) + R(x)/D(x).
P(x) = 2x3 + 4x2 − 2x − 1, D(x) = x + 3
P(x)/D(x)=
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Precalculus Homework Precalculus
10/02/17
simplify 2√3(2*²√2)
2√3(2*²√2)
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Precalculus Homework Precalculus
10/02/17
simplify ((2x^-2)/(5y^3))^-1
simplify ((2x-2)/(5y3))-1
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10/02/17
Simplify (-3x^2*y^3)*(4*x*y^2)
Simplify (-3x^2*y^3)*(4*x*y^2)
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10/02/17
For the quadratic f(x) = 1 − 6x − x^2
(a) Express f(x) in standard form
(c)find its maximum or minimum value.
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10/02/17
Find the values of the trigonometric functions of t when csc t = 3 and the terminal point of t is in Quadrant II.
I incorrectly solved it the first try.
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Precalculus Homework College Algebra
09/26/17
Use the Inverse Function Theorem to show that f and g are inverses of each other
f(x) = x3 + 1
g(x) = ^3√x − 1
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