437 Answered Questions for the topic Finite Math
Solve using Gauss Jordan elimination
solving system of equation by matrix method
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.
Probability help please!
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).
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′))
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?
Kelly Fisher invested a total of $20,000 in two municipal bonds that have yields of 8% and 9% interest per year, respectively.
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
Finite Product Codes
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.
Find the equation of the least-squares line for the data.
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 demand equation for the Wilkinson washable keyboards is p = −0.02x + 80
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)
A division of a company produces income tax apps for smartphones. Each income tax app sells for $7.
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.
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.
For the supply equation below, x is the quantity supplied in units of 1000 and p is the unit price in dollars.
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
The demand equation for the Sicard sports watch is p = −0.025x + 50
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.
Entomologists have discovered that a linear relationship exists between the rate of chirping of crickets of a certain species and the air temperature.