# Permutations and Combinations Questions and Answers

Algebra
Permutations and Combinations
Use the fact that the diameter of the largest particle that can be moved by a stream varies approximately directly as the square of the velocity of the stream. A stream with a velocity of 1/5 mile per hour can move coarse sand particles about 0.07 inch in diameter. Approximate the velocity required to carry particles 0.2 inch in diameter. (Round your answer to two decimal places.)
Algebra
Permutations and Combinations
Find seven ordered pairs to the equation y = 5 - x². Then determine its graph. x y -3 -4 -2 1 -1 4 0 5 1 4 2 1 3 -4 Choose the graph that connects the points.
Algebra
Permutations and Combinations
For x ∈ (3/7, ∞), use only the definition of increasing or decreasing function to determine if the f(x) = 1/3 - 5/(7(√7x - 3))is increasing or decreasing.
Algebra
Permutations and Combinations
Every day at Thomas's house they buy a baguette of bread that has the shape of a cylinder with a height of 45 cm and a radius of 5 cm joined with two hemispheres. What are the dimensions of the bread bag in the shape of a right circular cylinder where the bread can be packed in such a way that there is the least amount of space left over?
Algebra
Permutations and Combinations
Find seven ordered pairs to the equation y = 5-x². Then determine its graph. X y - 3 ____
Algebra
Permutations and Combinations
Which of the following expressions represents the length of the drawn altitude? Select all that apply. (A) 6 * sin(57°) (B) 4.7 * cos(57°) (C) 7.05² - (4.7² + 6²) (E) 4.7 * sin(57°) (F) 6 * tan(41.3°) (G) 6 * sin(41.3°) (H) k
Algebra
Permutations and Combinations
Find the exact value of cos (7π/12) a) 1-√3/2√2 b) √3+1/√2 c) √3-1/2√2 d) √3+1/2√2
Algebra
Permutations and Combinations
Write the expression in simplest form. √300 a. 100√3 b. 3√10 c. 150 d. 10√3
Algebra
Permutations and Combinations
Rewrite and simplify log₁₀₀x as a logarithm with base ten. a) (1/2)log₁₀x b) 2log₁₀x c) 2x d) log₁₀2x
Algebra
Permutations and Combinations
The board of directors of a company knows that the probability that the carbon emission from the company's manufacturing permissible level is 30%. A consultant is hired to use a carbon footprint calculator to test for the emission What is the probability that the manufacturing unit has carbon emission beyond the permissible is exceeding the of this test is said to be 85%. level. The accuracy emission level and the test predicts this?
Algebra
Permutations and Combinations
Use the intercepts to graph the equation. 3x+4y=12 Use the graphing tool to graph the line. Use the intercepts when drawing the line. If only one intercept exists, use it and another point to draw the line.
Algebra
Permutations and Combinations
Which of the following is the solution to 3|x-1|≥12? A. x≥-3 or x ≥5 B. x ≤3 and x ≥ 5 C. x≤3 or x≥5 D. x≥5
Algebra
Permutations and Combinations
Rewrite the equation 48 = 10ᵖ as a logarithm. a) log₄₈10 = p b) log₁₀48 = p c) log₁₀p = 48 d) log_p 48 = 10
Algebra
Permutations and Combinations
A total of 270 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adult tickets sold. How many adult tickets were sold?
Algebra
Permutations and Combinations
Given : V = <2,-1> and w=<-3,5>. What is the first and second term when you calculate w-2v?
Algebra
Permutations and Combinations
You have 7 balls that are each a different color of the rainbow. In how many distinct ways can these balls be ordered? Show your work.
Algebra
Permutations and Combinations
Elise sells cupcakes and brownies. Her cupcakes cost \$1.50 each and she sold \$45.75 worth of brownies. Write an equation to determine how many cupcakes she sold if she made a total of \$143.25.
Algebra
Permutations and Combinations
Last year there were 450 students in a soccer league. This year, participation increased by 64%. How many more children joined the league this year?
Algebra
Permutations and Combinations
Which of the following is not equivalent to tan(-x)? a)sin(-x)/cos(x) b)-tan(x) c)-sin(x)/cos(x) d) cot(x)
Algebra
Permutations and Combinations
There are 1,400 individuals in a school. Staff make up 4%. How many staff members are at the school?
Algebra
Permutations and Combinations
You have 6 different colored balloons. In how many distinct ways can the balloons be ordered Select one: O a. 720 O b. 365 O C. 5040 O d. 120
Algebra
Permutations and Combinations
1,200 students registered for an art camp. 945 students showed up. Calculate the percent error.
Algebra
Permutations and Combinations
Which of the following could be the artist's rendition graph of f(x) = log 4/3 (x+3)-2
Algebra
Permutations and Combinations
30 people are running for an office to be chosen randomly. You plan to use a 6-sided dice and a spinner. How many sections need to be on the spinner so each person has their own shape and number? Select one: a. 8 b. 6 c. 5 d. 24
Algebra
Permutations and Combinations
Using the following frequency table for beverage choices for students in a class. Boy Girl Total Water 8 4 12 Milk 14 15 29 Total 22 19 41 True or False: Choosing a boy that prefers milk is a dependent event Select one: True False
Algebra
Permutations and Combinations
You are choosing a student council president by lots.. If you have 10 pieces of paper numbered 0-9 and you draw 2 pieces (where order does NOT matter), how many candidates can get a unique number sequence? a. 90 b. 45 c. 60 d. 30
Algebra
Permutations and Combinations
If 54 people run for an office and you use a die. How many letters need to be on the spinner so each person has their own letter and number? Select one: a. 6 b. 9 c. 27 d. 18
Algebra
Permutations and Combinations
On December 18th, there is a 75% chance that Santa will come to the mall that day and a 55% chance that your best friend will be at the mall. There is a 40% chance that your best friend will be there AND Santa will come to that mall. What is the probability that Santa will come to the mall OR your best friend will be there? Select one: a. 90% b. 85% c. 75% d. 70%
Algebra
Permutations and Combinations
You play a game that requires rolling a six-sided die then randomly choosing a colored card from a deck containing 3 red cards, 7 blue cards, and 7 yellow cards. Find the probability that you will roll a 5 on the die and then choose a yellow card. (a) 7/17 (b) 7/102 (c) 1/6 (d) 1/17
Algebra
Permutations and Combinations
Premier Bank is planning to have a new building constructed. They would like the length of the building to be 40 feet longer than its width. To fit their needs, each floor of the building will add 12 feet to the height of the building. The cost of the foundation of the building will be \$10 per square foot. The cost for each successive floor of the building will be \$35,000. They plan to spend \$1,180,000 on construction. They would also like the perimeter of the building to be 3 times the height of the building. Create a system of equations to model the situation above, and use it to determine how many of the solutions are viable. Note: The bank wants the building to be as close to their specifications as possible, but the solution does not need to include whole numbers in order to be considered viable. A. There are 2 solutions and neither are viable.. B. There is only 1 solution and it is viable. C. There are 2 solutions and only 1 is viable. D. There are 2 solutions and both are viable.
Algebra
Permutations and Combinations
At a sandwich shop, 61% of customers buy a drink with their sandwich. Only 26% of customers buy a drink and chips with their sandwich. What is the probability that a customer who buys a drink also buys chips? a about 42.6% b 87% c about 2.3% d 35%
Algebra
Permutations and Combinations
A card is chosen at random from a deck of 24 cards, 2 red, 8 black, 2 blue, and 12 green. Then, the card is returned to the deck and a new card is chosen. The table below shows the results of choosing 12 cards. For which color of card is the experimental probability the same as the theoretical probability? Results red black blue green 1 3 5 3 a) blue b) black c) green d) red
Algebra
Permutations and Combinations
Let S be a Sylow p-subgroup of a finite group G. Then prove that Nċ(N(S)) = N(S), where N(S) is the normalizer of S in G.
Algebra
Permutations and Combinations
Solve the following problem. n=27; i=0.023; PMT=\$256; PV = ?
Algebra
Permutations and Combinations
Solve the system. x+y=7 y+z=8 x-z = -1 Is the system inconsistent, dependent or does it have 1 solution?
Algebra
Permutations and Combinations
Find two numbers whose sum is 33 and difference is 15.
Algebra
Permutations and Combinations
Suppose y varies directly with x, and y = 8 when x = -2. Find x when y = 20. x =
Algebra
Permutations and Combinations
A rancher has 4,500 feet of fencing available to enclose a rectangular area bordering a river He wants to separate his cows and horses by hiding the enclosure into two equal areas. If no fencing is required along the find the length of the center partition that will yield the maximum area. What is the length of the center partition that will yield the maximum area? (Round to the nearest whole number as needed)
Algebra
Permutations and Combinations
Define S(h)= -f(x + 2h) + 4f(x+h)-3f(x)/2h (a) Show that f'(x) - S(h) = c₁h² + c₂h³ + c3h² + ...
Algebra
Permutations and Combinations
Find the coordinate of the midpoint of the line segment that joins the two given points. (6, 3) and (-2, - 5)
Algebra
Permutations and Combinations
Let p and 2p + 1 be prime numbers and z is an integer. Are these nonlinear Diophantine equation have an integer solution? In what form? a. p¹ +(2p + 1)¹ = z² b. p¹ +(2p + 1)² = z² c. p² + (2p+1)¹ = z² d. p¹ +(2p + 1)³ = z² e. p² + (2p + 1)² = z² f. p³ +(2p+1)¹ = z²
Algebra
Permutations and Combinations
Christina is planning a wedding in a hall that has both regular seating and patio seating. She is trying to decide how to best arrange the roses and lilies. She has decided that some of the aisles at the wedding will have bouquets of only roses and that some of the aisles will have bouquets of only lilies. She has decided that in each rose aisle in the regular seating area, she wants there to be 2 less bouquets of roses than there are roses in each bouquet. There will be 8 rose aisles and one aisle with 4 bouquets of lilies in the regular seating area. The patio seating area will have one aisle with 5 bouquets of roses and one aisle with 7 bouquets of lilies. Christina plans on using 80 total flowers in the regular seating aisles and 75 total flowers in the patio seating aisles. Christina wants to apply these numbers to determine how many flowers will go in the bouquets if all of the rose bouquets have an equal number of roses and all the lily bouquets have an equal number of lilies. Create a system of equations to model the situation above, and use it to determine how many of the solutions are viable. Note: Christina wants the number of flowers to be as close to her specifications as possible, but the solution does not need to include whole numbers in order to be considered viable. A. There are 2 solutions and only 1 is viable. B. There are 2 solutions and both are viable. C. There is only 1 solution and it is viable. D. There are 2 solutions and neither are viable.
Algebra
Permutations and Combinations
The points (3,6) and (6, 15) are located on the graph of g(x). Assuming that g(x) is a linear function, what is its slope? slope= (y₂-y₁)/(x₂-x₁) A m=3 B m=1/3 C m=3/6
Algebra
Permutations and Combinations
If P dollars is deposited in a savings account that pays interest at a rate of r% per year compounded continuously, find the balance after t years. P = 80, r=3 1/2 , t = 10
Algebra
Permutations and Combinations
A dripping faucet wastes a cup of water if it drips for three minutes. the faucet drips. How long will it take for the faucet to waste 4.5 cups of water? The amount of water wasted varies directly with the amount of time Show your work or describe how you found your answer.
Algebra
Permutations and Combinations
Convert 10.33 Centimeters to Nanometers
Algebra
Permutations and Combinations
Write the equation of the line if the slope = -3/5 and the line passes through (-4, 0). Show your work.
Algebra
Permutations and Combinations
Write the equation of the line, with the given properties, in slope-intercept form. Slope=-8, through (-5,3) The equation of the line is__.
Algebra
Permutations and Combinations
Evaluate the expression. 18P 10/ 10! - 18 C10
Algebra
Permutations and Combinations
Let R be a ring with unity and M an R-module. Prove that M is cyclic if and only if M = (R/I) for some left ideal I of R.