4,322 Answered Questions for the topic College Algebra

College Algebra Math Science Physics

11/28/20

What is the total mass (in kg) of water vapor in the air in the apartment?
An apartment has the dimensions 15 m by 8 m by 5 m. The temperature is 25°C, and the relative humidity is 57 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
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College Algebra Math Science Physics

11/28/20

how much energy (in J) was made unavailable for useful work as a result?
An irreversible process takes place by which the entropy of the universe increases by 1.66 J/K. If the temperature of the environment in which the process occurred is 230 K, how much energy (in J)... more
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College Algebra Math Science Physics

11/28/20

What is the engine's efficiency (in percent)?
As a gasoline engine is running, an amount of gasoline containing 10,200 J of chemical potential energy is burned in 1 s. During that second, the engine does 3,400 J of work.(a)What is the engine's... more
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College Algebra Algebra

11/26/20

Lucy took three tests. If her median score was 84, her mean score was 87, and the range was 15, what were her three test scores?

Lucy took three tests. If her median score was 84, her mean score was 87, and the range was 15, what were her three test scores?
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College Algebra Math Algebra

11/25/20

function arithmetic problem!
suppose that f(x) = √x and that f(g(t)) = √t2+8. what must be the formula for g(t)?note: (the x and t2+8 are both entirely under the square root, sorry its unclear)
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College Algebra

11/25/20

college algebra word problem

Find the first term or a1 of an arithmetic sequence if a6 = 12 and a14 = 28.
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College Algebra

11/25/20

college algebra word problem
Write the first five terms of the geometric sequence, given any two terms. (Assume the common ratio r > 0.) a6 = 25,    a8 = 6.25
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College Algebra Math Science Physics

11/25/20

How much longer is it when it contains boiling water at 1 atm pressure?
An aluminum vat is 12 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?
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College Algebra Math Science Physics

11/25/20

What is its change in internal energy?
Air in a balloon does 57 J of work while absorbing 98 J of heat. What is its change in internal energy?
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College Algebra Math Science Physics

11/25/20

What is the total mass (in kg) of water vapor in the air in the apartment?
An apartment has the dimensions 15 m by 8 m by 5 m. The temperature is 25°C, and the relative humidity is 57 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
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College Algebra Math Science Physics

11/25/20

how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?
A machinist wishes to insert a steel rod with a diameter of 9 mm into a hole with a diameter of 8.998 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
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College Algebra

11/25/20

college algebra word problem

Write a recursive formula for the geometric sequence.an = {−32, −16, −8, −4,   }
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College Algebra

11/25/20

college algebra word problem
Write the first five terms of the geometric sequence.an = −9 · 3^n−1
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College Algebra Math Algebra Functions

11/25/20

inverse functions problem

fill in the blanks a) If f is one-to-one and f(13)=5, then f -1(5)= ____ and (f(13))-1=____b) If g is one-to-one and g(-12)=7, then g-1(7)=____ and (g(-12))-1=____
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College Algebra

11/24/20

College Algebra Help Please
Ellen has recently inherited $5400, which she wants to deposit into a CD account. She has determined that her two best bets are an account that compounds semi-annually at an annual rate of 4.1%... more
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College Algebra Math Precalculus Algebra

11/23/20

arithmetic and composition problem (help is much appreciated!)
The area of a circular wave expands across a still pond such that its radius increases by 9 cm each second. Write a formula for the area A of the circle as a function of time t since the wave... more
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College Algebra

11/21/20

linear functions
In 1994, the moose population in a park was measured to be 3870. By 1999, the population was measured again to be 4020. If the population continues to change linearly:Find a formula for the moose... more
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College Algebra

11/21/20

linear functions

In 1994, the moose population in a park was measured to be 3870. By 1999, the population was measured again to be 4020. If the population continues to change linearly:Find a formula for the moose... more
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College Algebra

11/21/20

college algebra word problem

Use the formula for the sum of the first n terms of the arithmetic sequence to find the sum.5/2 +3+7/2+4+9/2
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College Algebra

11/21/20

college algebra word problem

find the common difference.{11.2, 9, 6.8, 4.6, 2.4, ...}
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College Algebra

11/21/20

college algebra word problem

Find the common difference for the arithmetic sequence provided.{5, 13, 21, 29, 37, ...}
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College Algebra

11/21/20

college algebra word problem

Find the indicated term of the binomial without fully expanding the binomial.The fourth term of (2x − 6y)^5
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College Algebra

11/21/20

college algebra word problem

Use the Binomial Theorem to write the first three terms of the binomial.(a + b)^15
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College Algebra

11/21/20

college algebra word problem

Use the binomial theorem to expand the expression. Simplify the result.(a + 4)^3
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College Algebra

11/21/20

college algebra word problem

Use Pascal's Triangle to expand: (x − 5y)^5.
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