4,322 Answered Questions for the topic College Algebra

College Algebra

04/30/21

Math home work standard deviation word problem

A manufacturer knows that their items have a normally distributed length, with a mean of 10.8 inches, and standard deviation of 1.9 inches.If one item is chosen at random, what is the probability... more
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04/30/21

Show that B is the inverse of A.
A = -1/2 -5/4 B = 8 5 1 2 -4 -2To show that B is the inverse of A, we need to show that AB = I = BA.AB = -4 + ___ -5/2 + ___ ... more
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College Algebra Math Calculus Precalculus

04/30/21

Use the matrix capabilities of a graphing utility to solve (if possible) the system of linear equations. (Round your answers to two decimal places. If there is no solution, enter NO SOLUTION.
2x + 5y+ w= 15x + 4y + 2z - 2w= -72x - 2y + 5z + w = 2x - 3w = -1(x, y, z, w) = ______
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College Algebra Math Calculus Precalculus

04/30/21

Use an inverse matrix to solve (if possible) the system of linear equations. (If there is no solution, enter NO SOLUTION. If the system is dependent, set y = a and solve for x in terms of a.)
5/6x - y = -184/3x - 7/2y = -44(x,y) = _____
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College Algebra

04/30/21

I need help finding the nth term
use the system of 2 equations in two variables a, and d, to write a formula for the general term (nth term) of the arithmetic sequence whose fourth term a is 17 and whose ninth term a, is 32
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04/30/21

Find the complete solution of the system of linear equations.
Find the complete solution of the system of linear equations. Express your answer in terms of t where x=x(t), y=y(t), and z=t. { x + 4y - 2z = -3 2x - y + 5z = 12 8x + 5y + 11z = 30 }(x, y, z) =... more
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College Algebra

04/28/21

Algebra Question
Find C and a so that f(x)=Ca^x satisfies the given equation.Find C and a so that f(x)=Ca^x satisfies the given equation. f(-2) = 25/4,   f(2) = 1/100       a = ?C=?
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College Algebra

04/28/21

A pharmacist wants to mix a 45% saline solution with a 27% saline solution to get 108 mL of a 40% saline solution. How much of each solution should she use? Round your answer to the nearest mL.
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College Algebra

04/28/21

College algebra

A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, is given by ℎ(𝑡)=−4.9𝑡2+21𝑡+8. How long does it take to reach maximum... more
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College Algebra Math Physics

04/27/21

Rydberg formula question
Using the Rydberg formula, find the wavelength of the line in the Balmer series of the hydrogen spectrum for m = 3. The value of Rydberg constant is 1.097 × 107 m–1 and n = 2 for the Balmer series.
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College Algebra

04/26/21

Form a polynomial whose zeros and degree are given.
Zeros: 5Multiplicity: 1 ; 3, Multiplicity: 2Degree: 3
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College Algebra

04/26/21

Write two functions, f and g, such that ( f o g) (x) =-1/x+1 and such that neither function is identical to (f o g) (x) or x
Write two functions f and g, such that (f o g) (x) = - 1/x+1 and such that neither function is identical to (f o g ) (x) or xf(x) =g(x)=
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College Algebra

04/26/21

Write two functions, f and g, such that ( f o g) (x) =-1/x+1 and such that neither function to (f o g) (x) or x
Write two functions f and g, such that (f o g) (x) = - 1/x+1 and such that neither function is identical to (f o g ) (x) or cF (x) =g(x)=
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College Algebra

04/26/21

license plates in a particular state display 2 letters followed by 3 numbers. how many different license plates can be manufactured for this state?
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College Algebra Algebra 1 Algebra 2 Algebra

04/25/21

Stocks, Bonds, and CD Algebra Question
Maricopa's Success scholarship fund receives a gift of $ 115000. The money is invested in stocks, bonds, and CDs. CDs pay 2.75 % interest, bonds pay 3.4 % interest, and stocks pay 11.6 % interest.... more
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College Algebra Math Calculus Precalculus

04/24/21

Solve for X using the matrices below.
2A + 4B = −2XA = 8 -5 and B = 0 7 1 0 2 0 9 -2 -2 -1X = _____ _____ _____ _____ _____ _____
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College Algebra Math Calculus Precalculus

04/23/21

Use a graphing utility to perform the indicated operations.
A = 2 0 and B = 5 3 4 5 1 4B2 − 3B + 7Ɪ2= _____ ______ ______ ______
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College Algebra Math Calculus Precalculus

04/23/21

Solve for X using the matrices below.
2A + 4B = −2XA = 8 -5 and B = 0 7 1 0 2 0 9 -2 -2 -1X = _____ _____ _____ _____ _____ _____
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04/23/21

Find x and y from the matrix.
x+2 3 -7 2x+6 3 -7 5 2y 2x = 5 8 -85 7 y+2 5 7 6x = ____y = ____
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College Algebra Math Calculus Precalculus

04/23/21

Use a graphing utility to perform the operations for the matrices A, B, and C, and the scalar c.
A = -3 -2 3 0 2 -1 1 4 -2B= 1 -1 0 2 4 3 -2 1 0C = 3 -2 3 -4 0 -2 -1 1 3 c = 2(a) c(AB)_____ _____ __________ _____... more
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College Algebra

04/23/21

m is a degree 5 polynomial that passes through the origin, has zeros i and 5 − i , and m ( − 2 ) = − 2500 . Find the equation for m
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College Algebra Polynomials

04/23/21

If f(x) is a polynomial with real coefficients and zeros of 7 (multiplicity 2), -2 (multiplicity 3), -2+4i, and 5-3i, what is the minimum degree of f(x)?
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College Algebra Math

04/22/21

The following function is one-to-one. Find its inverse and verify your answer:
F(x) = 3squareroot (x-1) + 4
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College Algebra

04/22/21

Algebra question
On​ Melissa's 6th​ birthday, she gets a ​$3000 CD that earns 7​% ​interest, compounded semiannually. If the CD matures on her 16th ​birthday, how much money will be​ available?
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College Algebra

04/22/21

Algebra equation question
The radioactive element​ carbon-14 has a​ half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 53.7​% of their​ carbon-14. How old were the bones at the time they... more
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