437 Answered Questions for the topic Finite Math

Finite Math

09/11/20

#### Solve using Gauss Jordan elimination

3) −x − 5y + z = 17 −5x − 5y + 5z = 5 2x + 5y − 3z = −10

Finite Math

09/10/20

#### solving system of equation by matrix method

5) 4r − 4s + 4t = −4 6) x − 6y + 4z = −12 4r + s − 2t = 5 x + y − 4z = 12 −3r − 3s − 4t = −16 2x + 2y + 5z = −153) −x − 5y + z = 17 4) 4x + 4y + z = 24 −5x − 5y + 5z =...
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Finite Math

09/06/20

#### A universal set, with n(U) = 112, is partitioned into three subsets: A, B, and C. If n(B) = 5⋅n(A), and n(C) = 2⋅n(B), find the number of elements in the subset A.

Finite Math Math

09/05/20

#### Probability help please!

Assume that product codes are formed from the letters R, Q, and T, and consist of 6 not necessarily distinct letters arranged one after the other. For example, RRRRRT is a product code.(1) How...
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Finite Math

09/04/20

#### Let A,B,C⊆U. If n(U)=54, n(A)=16, n(B)=24, n(C)=25, n(A∩B)=11, n(A∩C)=4, n(B∩C)=7, and n(A′∩B′∩C′)=8, find n(A′∩B′∩C).

Finite Math

09/04/20

#### Let X,Y,Z⊆U. If n(U)=82, n(X)=24, n(Y)=32, n(Z)=33, n(X∩Y)=11, n(X∩Z)=7, n(Y∩Z)=10, and n(X∩Y∩Z)=3, find n(X′∩(Y∪Z′))

Finite Math

09/03/20

#### A jazz concert brought in $157,000 on the sale of $7,600 tickets. If the tickets sold for $15 and $25 each, how many of each type of ticket were sold?

Finite Math

09/01/20

#### Kelly Fisher invested a total of $20,000 in two municipal bonds that have yields of 8% and 9% interest per year, respectively.

Formulate but do not solve the problem.Kelly Fisher invested a total of $20,000 in two municipal bonds that have yields of 8% and 9% interest per year, respectively. If the interest Kelly receives...
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Finite Math

09/01/20

#### Michael Perez deposited a total of $2000 with two savings institutions. One pays interest at a rate of 6%/year, whereas the other pays interest at a rate of 7%/year

Formulate but do not solve the problem.Michael Perez deposited a total of $2000 with two savings institutions. One pays interest at a rate of 6%/year, whereas the other pays interest at a rate...
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Finite Math

09/01/20

#### Finite Product Codes

Assume that product codes are formed from the letters T, Z, X, W, R, Q, and Y, and consist of 3 not necessarily distinct letters arranged one after the other. For example, TTW is a product code.How...
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Finite Math

08/31/20

#### The number of satellite and telecommunications subscribers continues to grow over the years. The following table gives the number of subscribers (in millions) from 2006 through 2010.

The number of satellite and telecommunications subscribers continues to grow over the years. The following table gives the number of subscribers (in millions) from 2006 through...
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Finite Math

08/31/20

#### Find the equation of the least-squares line for the data.

x
1
3
5
7
9
y
9
8
6
2
2
(a) Find the equation of the least-squares line for the data.

Finite Math

08/24/20

#### A division of the Gibson Corporation manufactures bicycle pumps. Each pump sells for $10, and the variable cost of producing each unit is 50% of the selling price.

A division of the Gibson Corporation manufactures bicycle pumps. Each pump sells for $10, and the variable cost of producing each unit is 50% of the selling price. The monthly fixed costs incurred...
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Finite Math

08/24/20

#### The demand equation for the Wilkinson washable keyboards is p = −0.02x + 80

The demand equation for the Wilkinson washable keyboards isp = −0.02x + 80where x is the quantity demanded per month and p is the unit price in dollars. The corresponding supply equation is given...
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Finite Math

08/24/20

#### The sales of digital cameras (in millions of units) in year t is given by the function f(t) = 3.03t + 6.84 (0 ≤ t ≤ 3)

The sales of digital cameras (in millions of units) in year t is given by the functionf(t) = 3.03t + 6.84 (0 ≤ t ≤ 3)where t = 0 corresponds to the end of 2001. Over that same period, the...
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Finite Math

08/24/20

#### A division of a company produces income tax apps for smartphones. Each income tax app sells for $7.

A division of a company produces income tax apps for smartphones. Each income tax app sells for $7. The monthly fixed costs incurred by the division are $20,000, and the variable cost of producing...
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Finite Math Math

08/24/20

#### Ace Truck Leasing Company leases a certain size truck for $30/day and $0.60/mi, whereas Acme Truck Leasing Company leases the same size truck for $25/day and $0.70/mi.

Ace Truck Leasing Company leases a certain size truck for $30/day and $0.60/mi, whereas Acme Truck Leasing Company leases the same size truck for $25/day and $0.70/mi.(a) Find the functions...
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Finite Math

08/17/20

#### Assume the number of U.S. dial-up Internet households stood at 42.5 million at the beginning of 2004 and was projected to decline at the rate of 3.9 million households per year for the next 4 years.

Assume the number of U.S. dial-up Internet households stood at 42.5 million at the beginning of 2004 and was projected to decline at the rate of 3.9 million households per year for the...
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Finite Math

08/17/20

#### For the supply equation below, x is the quantity supplied in units of 1000 and p is the unit price in dollars.

For the supply equation below, x is the quantity supplied in units of 1000 and p is the unit price in dollars.1/2x-2/3p+12=0;p=4Determine the number of units of the commodity the supplier will make...
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Finite Math

08/17/20

#### For the demand equation below, x represents the quantity demanded in units of 1000 and p is the unit price in dollars. p = −0.2x + 80; p = 40

For the demand equation below, x represents the quantity demanded in units of 1000 and p is the unit price in dollars.p = −0.2x + 80; p = 40(b) Determine the quantity demanded corresponding to the...
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Finite Math

08/17/20

#### The demand equation for the Sicard sports watch is p = −0.025x + 50

The demand equation for the Sicard sports watch isp = −0.025x + 50where x is the quantity demanded per week and p is the unit price in dollars.Sketch the graph of the demand equation. (Sketch the...
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Finite Math

08/17/20

#### The idea of a large, stable middle class (defined as those with annual household incomes in 2010 between $39,000 and $118,000 for a family of three), is central to America's sense of itself.

The idea of a large, stable middle class (defined as those with annual household incomes in 2010 between $39,000 and $118,000 for a family of three), is central to America's sense of itself. But...
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Finite Math

08/17/20

#### Entomologists have discovered that a linear relationship exists between the rate of chirping of crickets of a certain species and the air temperature.

Entomologists have discovered that a linear relationship exists between the rate of chirping of crickets of a certain species and the air temperature. When the temperature is 60°F, the crickets...
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Finite Math

08/17/20

#### A certain economy's consumption function is given by the equation C(x) = 0.85x + 6

A certain economy's consumption function is given by the equationC(x) = 0.85x + 6where C(x) is the personal consumption expenditure in billions of dollars, and x is the disposable personal income...
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08/14/20

#### How to better communicate math?

Hello. This question is directed to professionals who manage the site.The Ask an Expert forum, although very easy to use, does not seem to offer the ability to typeset mathematics in an...
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