# Permutations and Combinations Questions and Answers

Algebra
Permutations and Combinations
A = {5'x : x is even and 4 ≤ x ≤ 15}. Rewrite A in roster notation.
Algebra
Permutations and Combinations
Given the functions defined by f(x) = 8x³ + 5 and g(x) = ∛(x - 5), find (g o f)(x).
Algebra
Permutations and Combinations
Use the z table below to find the value. a). Find the value of z to the nearest hundredth: z =0.044/√0.000833042 b). Find the corresponding value of A for your answer to part a. c). Use your answer in part b to determine whether the following statement is true or false: A < 0.05.
Algebra
Permutations and Combinations
In the diagram, there is a cyclic quadrilateral whose diagonals PR, QS intersect at X. ∠ PSQ=49°, ∠ PQS=63° and ∠ QXR=107°. Find the angles of the quadrilateral.
Algebra
Permutations and Combinations
Find the 5th term from the end in the expansion of — x²) ²0.
Algebra
Permutations and Combinations
The distance between school and home is 8 km and home and playground is 7 km. Find the distance between school and ground in meters. 7000 8000 14000 15000
Algebra
Permutations and Combinations
Graph the system x^2 + y^2 ≤ 5 x + 3y < -5 Label the intersections and solution region.
Algebra
Permutations and Combinations
In how many different ways can a true-false test consisting of 5 questions be answered?
Algebra
Permutations and Combinations
(a) How many distinct permutations can be made from the letters of the word CANOE? (b) How many of these permutations start with the letter O? (a) There are ____ distinct permutations. (Type a whole number.)
Algebra
Permutations and Combinations
In a medical study, patients are classified in 8 ways according to whether they have blood type AB+,AB‾, A+ .A‾ .B+ .B‾.O+, or O‾, and also according to whether their blood pressure is low, normal, or high. Find the number of ways in which a patient can be classified.
Algebra
Permutations and Combinations
The graph of f(x) = e^x−2+ 3 will have: A) asymptote at x = 3, and contains the point (0,1/e^2+3) B) asymptote at y = 0, and contains the point (0, 1) C) asymptote at y = 3, and contains the point (2,4) D) asymptote at x =5, and contains the point (0,1/e^2+3)
Algebra
Permutations and Combinations
Let A be a factorial ring and p a prime element. Show that the local ring A(p) is principal.
Algebra
Permutations and Combinations
Now set each derivative equal to zero and solve the system of equations for L and W. -(29,160/L²)+ 5W = 0 -(29,160/W²)+5L = 0 (L,W) = ?
Algebra
Permutations and Combinations
Given the function f(x) = x³, determine (f∘f)(x). Provide your answer below:
Algebra
Permutations and Combinations
Use the formula x² =(n-1) s²/σ² to find x² for the given values of n, s and σ. Round to the nearest thousandths. n = 9, s = 4.8, σ= 3.2 x²=?
Algebra
Permutations and Combinations
Select all the choices that apply to ∆ ABC with: ∠B=110°, ∠A=∠C, AC = 50. obtuse acute scalene isosceles ASA AAS SSA SAS
Algebra
Permutations and Combinations
Solve the non-linear Differential Equation y"=-eʸ : y=f(x) by explicitly following these steps: (Note: u=f(y), w=f(u) so use the chain rule as necessary) Find x+D wrt z= √(C²-2u) by way of integration wrt u, where D is the constant of integration wrt.x
Algebra
Permutations and Combinations
Find the 1st and 2nd derivative of any polynomial of the 5th order (as given in the class) using the forward, central, and backward finite difference method!
Algebra
Permutations and Combinations
Abby, Ben, Charles, and Daniel are on a boat. The boat hit a reef and one-by-one each person fell out of the boat. In how many different orders could these passengers fall off the boat?
Algebra
Permutations and Combinations
Apply the inverse property of multiplication. 8/13 .___ = 1
Algebra
Permutations and Combinations
Consider a student club consisting of 8 males and 11 females. How many ways can a femalepresident, a male secretary, and male treasurer be selected?
Algebra
Permutations and Combinations
A box of chocolates contains the following items. milk dark total peanuts 5 3 8 No peanuts 6 6 12 total 11 9 20 What is the probability that you randomly select and eat a chocolate that is a milk chocolate or has no peanuts inside.
Algebra
Permutations and Combinations
The loudness of a sound is related to the logarithm of the ratio of the measured intensity, I, to a reference intensity, I. The loudness, L, of a sound is measured in decibels, dB, and can be determined using the formula L = 10log10 (I/Io)). If the intensity of the sound of a rocket launching is 4500 times that of a jet engine and the rocket has a loudness of 170 dB, then the loudness of the jet engine, to the nearest decibel, is
Algebra
Permutations and Combinations
Rewrite log x 1/3 as a single logarithm with no exponents.
Algebra
Permutations and Combinations
1. Suppose we want to know the probability that a student will choose a Water at random. Beverage Boys Girls Total Water 27 34 61 Lemonade 5 25 30 Soda 35 6 41 total 67 65 132 What is the probability that a student will choose a water? Show your work. Answer should be a percent to the tenth spot. 2. What is the probability that the student is a boy and chooses water? Answer should be a percent to the tenth spot. 3. Suppose we want to know the probability that a student chosen at random will be a boy and have a beverage choice is Lemonade. From the table: P(GPA Boy/Lemonade) Is this dependant or independent? 4. Now let's look at the probability that a student is a girl and chooses Soda. Answer is a percent and to the tenth of a percent. This would be dependant or independant?
Algebra
Permutations and Combinations
Find the X-Valites CIF any) at which the function f(x) = x+2/x²+6x78 is not continuous. Which of the discontinvities are removable?
Algebra
Permutations and Combinations
Find the range, mean, and standard deviation of the data set. (7, 13, 7, 4, 4, 3, 11, 18) The range is (Type a whole number.) The mean is (Type an integer or a decimal.) The standard deviation is (Round the final answer to two decimal places as needed. Round all intermediate values to three decimal places as needed.)
Algebra
Permutations and Combinations
From the top of a 20 m lighthouse, the angles of depression to two ships, the Acadian and the Bounty, are 52° and 63° respectively. If the angle between the ships is 120°, how far apart are they?
Algebra
Permutations and Combinations
Is the function f(x) = 2/x one-to-one? Select the correct answer below: a) Yes B) No
Algebra
Permutations and Combinations
Remember that our goal is to add a number to a binomial to make it a perfect-square trinomial. 1. Make sure the leading coefficient is 1. Divide out or factor out the leading coefficient if necessary. 2. To find the number we need to add, we will take the coefficient of x, divide it by 2, and square it. Ex: Fill in the blanks to complete the square and make a perfect square trinomial.
Algebra
Permutations and Combinations
The radian measure of an angle of 270 degrees is
Algebra
Permutations and Combinations
If money is invested in an account earning 3.3% annual interest that is compounded continuously, how long will it take the amount to double? Round your answer to the nearest tenth. Provide your answer below:
Algebra
Permutations and Combinations
Find the inverse of f(x) = {(1/x³)-2. (f¯¹(x))} =
Algebra
Permutations and Combinations
Write -2 - log₄x +(1/2)log₄(x + 1) + log₄y as a single logarithm with coefficient 1. Note: If you are using log you need to type it in and use the subscript button on the keyboard. There is no log button. Provide your answer below:______________
Algebra
Permutations and Combinations
Let H be a transitive permutation group in S con- taining an n-cycle and a transposition. Then prove that H = S.
Algebra
Permutations and Combinations
If sin (θ)=2/3 and θ is in the 2nd quadrant, find cos(θ) cos(θ) = Enter your answer as a reduled radical. Enter √12 as 2sqrt(3).
Algebra
Permutations and Combinations
Factor the difference of two squares. 25x²-81y² Select the correct choice below and fill in any answer boxes within your choice. A. 25x²-81y² =_______ B. The polynomial is prime.
Algebra
Permutations and Combinations
Suppose the demand function for a commodity is given by the equation p² + 16q =1,800 and the supply function is given by the equation 900-p² + 4q = 0. Solve the supply equation for p². p²=__________ Substitute this value for p² in the demand equation and solve for q. q=__________ Find the equilibrium quantity. __________ Find the equilibrium price. (Round your answer to two decimal places) \$____________
Algebra
Permutations and Combinations
Expand In (3y²) completely. Keep variables in the order that given in the original term. I.e. For log(a/3b), present the answer as log a-log 3-logb, but not - log 3-log b + log a. r(³)-2r(y)
Algebra
Permutations and Combinations
(2) Show that a group G of order 5313 is not simple.
Algebra
Permutations and Combinations
Select Strong association, Weak association, or Moderate association to correctly classify each correlation coefficient. Correlationcoefficient Strongassociation Weakassociation Moderate association 0.45 0.95 -0.8 0.10
Algebra
Permutations and Combinations
In the 2010 census, the population of state A in thousands was 4,792, State B was 2,991, and State C was 4,551. Apportion 15 representative seats to these three states. Assign the seats using the Hamilton apportionment method The representation includes members from State A. ...
Algebra
Permutations and Combinations
John owns a hotdog stand. He has found that his profit is represented by the equation must he sell to earn the most profit? P(x) = -x^2 +68x-84 with P being profits, in cents, and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit
Algebra
Permutations and Combinations
Use Cramer's Rule to solve (if possible) the system of linear equations. (If not possible, enter IMPOSSIBLE.) 18x₁ + 12x₂= 25 30x₁ +24x₂ = 47
Algebra
Permutations and Combinations
(Solving for a specified variable, equations of lines) When writing the equation of a line in college algebra, we will start with the point-slope form of line, y - y₁ = m(x-x₁), and we will solve it for y to write it in slope-intercept-form, y = mx + b. Substitute the given point and slope into the point-slope form and then solve for y so your equation is in slope-intercept form. a) x₁ = 2, y₁ = 3, m = 4 b) x₁ = 5, y₁ = -5, m = -2
Algebra
Permutations and Combinations
Find the distance between the points (3/2,4/3), (3,-2)
Algebra
Permutations and Combinations
Solve the linear inequality. Express the solution using interval notation. (4/3) - (1/2)x ≥ (7/6) +x
Algebra
Permutations and Combinations
Find seven ordered pairs to the equation y=x²-2. Then determine its graph.
Algebra
Permutations and Combinations
The population of wolves in a wildlife reserve can be modelled by the function f(x) = (1000 + 600x)/(10 + 0.6x), where f(x) is the population of wolves, and x is the number of years since the population was introduced. In the context of this model, what does the vertical asymptote represent? (a) Nothing; the vertical asymptotes are irrelevant in all contexts. (b) Nothing; the vertical asymptote is outside the domain. (c) The maximum number of wolves that can survive in the reserve at any given time. (d) The time at which the wolves began living in the reserve.
Algebra
Permutations and Combinations
Complete the t-chart for the function: h(x) = 2x + 1 x h(x) 0 2(0)+1=? 1 2(1) + 1 = ? 2 2(2) + 1 = ? 3 2(3)+1 = ? a. 5 b. 1 C. 7 d. 3