3,394 Answered Questions for the topic College Algebra

College Algebra

05/11/15

#### Use the formula

A=P(1+(r/n))nt to find the total amount of money accumulated for an initial investment $1,150 at 12% compounded quarterly after 11 years.

College Algebra

05/11/15

#### The pH scale for acidity is defined by

pH=-log10(H+) where (H+) is the concentration of hydrogen ions measured in moles per liter (M). A substance has a hydrogen ion concentration of (H+)=4.6*10-5M Calculate the pH of the substance.

College Algebra

05/07/15

#### A chemist is studying the properties of a bronze alloy (mixture) of copper and tin.

She begins with 4 kg of an alloy that is one-half tin. Keeping the amount of copper constant, she adds small amounts of tin to the alloy. Letting x be the total amount of tin added,...
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College Algebra

05/07/15

#### Find the solution of the logarithmic equation

ln x=9
in terms of logarithms, or correct to four decimal places. Your answer is

College Algebra

05/06/15

#### f(x) = (x-5)(x+4)(x-3)

Find the y-intercept(s), the x-intercept(s), the values of x where f(x)>0, and the values of x where f(x)<0.
What are the values of x where f(x)>0?
Answer (in interval...
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College Algebra

05/06/15

#### Use the Laws of logarithms to rewrite the expression

log2 (x19y8)
in a form with no logarithm of a product, quotient or power. After rewriting we have
log2(x19y8)=Alog2x+Blog2y
with the constant A=____
and the constant B=____

College Algebra

05/06/15

#### Starting with the graph of f(x) = 8^x, write the equation of the graph that results from

(a) shifting f(x) 2 units to the left. y =
(c) reflecting f(x) about the x-axis and the y-axis. y =

College Algebra

05/06/15

#### Find the exponential function

f(x)=a^x whose graph goes through the point (2,25)
a=___

College Algebra

05/05/15

#### If you write the following expression

(x^-3 x^2/ x^3 x^-2)^2
as a single power of x then the exponent is___

College Algebra

05/05/15

#### If you write the following expression

(x^-3 x^2 / x^3 x^-2)
as a single power of x then the exponent is

College Algebra

05/05/15

#### Express the equation in exponential form (a) ln 2 = x is equivalent to e^A=B

A=
B=2
2. ln x = 3 is equivalent to e^C=D
C=3
D=

College Algebra

05/05/15

#### Use the Laws of logarithms to rewrite the expression

log((x^3 y^8)/z^10)
Alog(x)+Blog(y)+Clog(z)
A=
B=
C=

College Algebra

05/03/15

#### I bought 3 bacon and 4 eggs and paid 12.33 my wife went to the store and bought 3 eggs and 4bacon and paid 14.13

We want to return 3 packages bacon and 3 cartons of eggs how much will be refunded? also they were bought at the same store

College Algebra

04/30/15

#### the length of a rectangle is 5 less than twice the width. Given that the length is x and width is y and the perimeter is 20 cm, perform the following: a) Form a

form a system of equations using variables x and y
form an augmented matrix of the system and solve the system
find the area of the rectangle

College Algebra

04/28/15

#### let u=lna, v=lnb, w=lnc. for number 1 rewrite each without using the ln function

1.) ln(a2c4/b5)

04/28/15

#### newton's law of cooling states the temperature of a body at a time t after being introduced into an environment

Newton's law of cooling states the temperature of a body at a time t after being introduced into an environment having constant temperature To is A(t)=To+Ce-kt, where C and K are constants and t is...
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04/28/15

#### carbon 14 is used for carbon dating.

Carbon 14 is used for carbon dating. Carbon 14 decays at a rate of y=Yoe-(ln2)(1/5700)t. If a mummy is found and has exactly 1/3 of its carbon 14 remaining, how long has the mummy been entombed.

04/25/15

#### In an effor to control vegetation overgrowth, 82 rabbits are released in an isolated area Free of predators. After 2 years, it is estimated that the rabbit popu

In an effor to control vegetation overgrowth, 82 rabbits are released in an isolated area Free of predators. After 2 years, it is estimated that the rabbit population has increased to 328. Assuming...
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