3,395 Answered Questions for the topic College Algebra

College Algebra Logarithms

04/14/15

#### If a sample of a certain solution is determined to have a [H3O^+] concentration of 4.6*10^-1 moles/liter, what is its pH? Round off your answer to one decimal p

If a sample of a certain solution is determined to have a [H3O^+] concentration of 4.6*10^-1 moles/liter, what is its pH? Round off your answer to one decimal place.

College Algebra

04/14/15

#### If a polynomial f(x) has a remainder of -9 when divided by x-3, what is f(3)?

If a polynomial f(x) has a remainder of -9 when divided by x-3, what is f(3)?

04/13/15

#### If a sample of a certain solution is determined to have a [H3O^+] concentration of 4.6*10^-1 moles/liter, what is its pH? Round off your answer to one decimal p

If a sample of a certain solution is determined to have a [H3O^+] concentration of 4.6*10^-1 moles/liter, what is its pH? Round off your answer to one decimal place.

04/12/15

#### E^2-4ln(x)+ln(y) ise the the properties of logarithms to write the following expression as a single term that doesn't contain a logarithm.

E^2-4ln(x)+ln(y)
use the the properties of logarithms to write the following expression as a single term that doesn't contain a logarithm.

04/12/15

#### In chemistry, the pH of a solution is a measure of the acidity or alkalinity of the solution. Water has a pH of 7 and in general, acids gave a pH less than 7 an

In chemistry, the pH of a solution is a measure of the acidity or alkalinity of the solution. Water has a pH of 7 and in general, acids gave a pH less than 7 and alkaline solutions have a pH...
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College Algebra College Algebra Word Problem

04/12/15

#### A certain species of deer is to be introduced into a forest, and wildlife experts estimate the population will grow to P(t)=(187)3^t/2, where t represents the n

A certain species of deer is to be introduced into a forest, and wildlife experts estimate the population will grow to P(t)=(187)3^t/2, where t represents the number of years from the time of...
more

04/12/15

#### In chemistry, the pH of a solution is a measure of the acidity or alkalinity of the solution. Water

In chemistry, the pH of a solution is a measure of the acidity or alkalinity of the solution. Water has a pH of 7 and in general, acids gave a pH less than 7 and alkaline solutions have a pH...
more

College Algebra

04/12/15

#### A certain species of deer is to be introduced into a forest. And wildlife experts estimate the population will grow to P(t)=(187)3^t/2, where t represents the n

A certain species of deer is to be introduced into a forest. And wildlife experts estimate the population will grow to P(t)=(187)3^t/2, where t represents the number of years from the time of...
more

College Algebra

04/07/15

#### The zeros of P(x)=x^2+16

x1 = __+(-4) i negative imaginary part, its multiplicity is ____;
And
x2 =___+(4) i with positive imaginary part, its multiplicity is___.

04/02/15

#### Inverse functions

The percentage of material retained during algebra class varies directly as the square of the number of hours of sleep a student got the night before and varies inversely to the number of hours a...
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04/02/15

#### The period of vibration of a pendulum varies directly as the square root of the length of the pendulum.

The period of vibration of a pendulum varies directly as the square root of the length of the pendulum. If the period of vibration is 3.6 when the length is 36 inches, find the period when the...
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04/01/15

#### The time it takes to complete a job varies inversely to the number of people working on it.

The time it takes to complete a job varies inversely to the number of people working on it. If it takes 10 carpenters 36 hours to frame a house, how long will it take 22 carpenters to do the same job?
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03/30/15

#### Please hurry! help me solve this word problem that involves compounded continuously and doubling

If an account pays 3.5% interest compounded continuously, how long it will take for an investment to double? (Round your answer to the whole number).Hint. You can choose the amount of the investment.

03/30/15

#### Find the inverse matrix (if it exists)

[1 -1 1]
[0 -1 0]
[0 0 2]
(the brackets are all suppose to be combined)
Answer: first row=?
second row=?
third row=?

College Algebra

03/30/15

#### g(x) = -x-v(x-8) +2

find the domain of g(x)
find the range of g(x)
find when g(x)=-20

03/30/15

#### The electrical resistance R of a wire varies directly as its length l and inversely as the square of its diameter d.

(a) Express R in terms of l, d, and a constant of variation k.
I got the equation R=k(l/d^2) which was correct.
(b) A wire 90 feet long of diameter 0.015 inch has a resistance of 25 ohms....
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College Algebra

03/30/15

#### use the function f(x)=x^2+4x+1, h(x)= 11/x^2-2x

Find h(3)Find the x and y intercepts for f(x)Find domain of h(x)

College Algebra

03/30/15

#### use the function f(x)=x^2+4x+1, h(x)= 11/x^2-2x, and g(x) square root symbol over x-8 +2

Find h(3)
Find the x and y intercepts for f(x)
Find domain of h(x)
Find domain of g(x)
Find the range of g(x)
Find when g(x)=-20

College Algebra

03/30/15

#### Given the equation of the circle 2x^2-20x+2y^2+16y+10=0

find the center and the radius of the circle.

College Algebra

03/30/15

#### Given the points 3,10 and 11, -2 find the distance and midpoint between the two points

find the distance and the midpoint between two points

College Algebra

03/29/15

#### College algebra

Nested Form of a Polynomial Expand Q to prove that the polynomials P and Q are the same.
P(x)=3x^4-5x^3+x^2-3x+5
Q(x)=(((3x-5)x+1)x-3)x+5
Try to evaluate P(2) and Q(x) in your head, using the...
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College Algebra Math Problem

03/29/15

#### Polynomial

I need to find the domain, simplify, the hole, vertical Asymptote, horizontal asymptote, x intercept, and y intercept
(these are fractions)
f(x)= numerator..(x-3)(2x+1) denominator.....
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College Algebra

03/29/15

#### college algebra

Solve the system by using either the substitution method or the elimination-by-addition method, whichever seems more appropriate. (If the system is dependent, enter DEPENDENT. If the system is...
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