Answers created by Geoff K.

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• Two teams, say the Celtics and the Cavs, are playing a seven game series. The Cavs are a better team and have a 60% chance of winning each game. What is the probability that the Celtics win at least one game? Remember that the Celtics must win one of the
  
• How do I prove that #sum_(i=1)^n(x_i-mu)^2=sum_(i=1)^n(x_i)^2-nmu^2#?
  
• What is #3x^4-5x^2+4x-1/x^2+1#?
  
• How do you transform y=1/x to y= (3x-2)/(x+1) ?
  
• How do I find the mean of the data set #{x_1,x_2,....,x_25}# given that #sum_(i=1)^25x_i^2=2568.25# and the standard deviation is #5.2#?
  
• Consider the word UNBIASED. How many words can be formed with the letters of the word in which no two vowels are together?
  
• How do you find the new mean for a normal distribution, given standard deviation and probability?
  
• P(n)is the product of two digits in the integer n.For example, P(18)=1x8=18 ,P(99)=9x9=81.How to find the value of P(10)+P(11)+P(12)+..+P(99)?
  
• Normal Distribution...contribution pls?
  
• How to find the probabilty in this question?
  
• There are four balls of different colour and four boxes of colour same as those of the balls one in each box could be placed such that a ball does not go to box of its own colour is?
  
• If you flip a fair coin 10 times, what is the probability that it lands on heads exactly 4 times?
  
• 4 cards selected randomly from pack of 52 cards find the probability of selecting at most one heart card?
  
• What are some real life examples of the pythagorean theorem?
  
• Of 800 people surveyed, 420 were male, and 325 had cell phones. Of those with cell phones, 200 were female. What is the probability that a person surveyed was either male or had a cell phone?
  
• What is the difference between the confidence interval and margin of error?
  
• Can someone help me solve for which expression?
  
• What are the discontinuities and asymptotes for the rational function?
  
• When you are listing things and using commas, do you just put and before the last word or you you put a comma before the and, too? Please see below for details
  
• How can i find t (candle factory statistics question - a bit difficult, need it to prepare for an exam)?
  
• What is the degree of #P(x) = x^3(x+2)(x-3)^2#?
  
• When do you use a colon in a sentence?
  
• Y=-10X-3 fill in the table?
  
• Evaluate each arithmetic series described?
  
• How do you find the roots, real and imaginary, of #y=(-2x+4)(x+1)+3x^2+2x # using the quadratic formula?
  
• How do you rewrite #1/ (7x^-4y^-1)# using positive exponents?
  
• Is the following sentence missing any apostrophes? If so, where?: The mayors aide forgot the constituents names.
  
• A skier has an deceleration of #2.5# #m##/##s^2#. How long does it take her to come to a complete stop from a speed of #18# #m##/##s#?
  
• how do you solve this 3√2x = 6?
  
• How to find price before sale?
  
• How can i calculate probabilities regarding candle factories? (details inside)
  
• How do you evaluate # csc^-1 (cos(4/7))#?
  
• Three Greeks, three Americans and three Italians are seated at random around a round table. What is the probability that the people in the three groups are seated together?
  
• Please solve q 111 ?
  
• Assume 75% of the AP stats students studied for this test. If 40% of those who studied get an A but only 10% of those who did not study get A, what is the probability that someone who gets an A actually studied for the test?
  
• What is the equation of the line in slope intercept form that goes through the point (7, 2) and has a slope of 4?
  
• What is the value of x in the equation? Thank you!
  
• What is the probability that of 25 randomly selected students, no two share the same birthday?
  
• How many ways can you arrange the letters in the word factor?
  
• How do you solve #5( m + 1) \leq 20#?
  
• How do I create a linear equation with a given solution like (3,0)?
  
• A flagpole is 53 feet tall. A rope is tied to the top of the flagpole and secured to the ground 28 feet from the base of the flagpole. What is the length of the rope?
  
• What is the sample mean for the data?
  
• When you find the upper and lower quartiles what happens if the median is not in the data set?
  
• What is the polar equation with the same graph as (x+2)^2 + (y-1)^2 = 5?
  
• The first term of geometric term is 6 and comman ratio is 3 what is the 6th term??
  
• What is 1.5 repeated as a fraction?
  
• How do you graph #x+y=3#?
  
• What is the difference between a population and a sample?
  
• Let f=(x/2)+3 be defined on the closed interval {-2,4}, estimate the area under the graph of f above the x-axis using: a. 6 left endpoint rectangles b) 6 right endpoint rectangles?
  
• What is the limit of #lim_((x,y)->(0,0))x^2/(x^2+y^2)#?
  
• How do you express the phrase "Five more than the product of 7 and a" as an algebraic expression?
  
• What is the probability of getting exactly #2# three's when rolling #4# fair, #6#-sided die?
  
• Prove It ?? Sin10°Sin50°+Sin50°Sin250°+Sin250°Sin10°=0
  
• Let #X# be #N(mu, sigma^2)# so that #P(X<89) = 0.90# and #P(X<94) = 0.95#. How do you find #mu# and #sigma^2#?
  
• Ms. Fox asked her class is the sum of 4.2 and square root of 2 rational or irrational? Patrick answered that the sum would be irrational. State whether Patrick is correct or incorrect. Justify your reasoning.
  
• How do you simplify #(x-5)/(4x-28)# and what are the restrictions?
  
• Please can you help with a question on probability from the Venn diagram given. ?
  
• Jude has a deck of playing cards. He is asked to remove one card at random, then a second card. What could Jude do between the events to ensure they are dependent?
  
• In one senior class, 1/3 of the students are honor students. Of these honor students, 2/7 are varsity athletes. If they are four athletes in the class, how many students are there in the class? a. 84 b. 42 c. 52 d. 60
  
• Plot the complex number?
  
• How do you solve #\frac { 1} { 2} x ^ { 2} - x > 4#?
  
• How do I Find P ( 2 < X < 7 )? (Stats)
  
• Why does heteroskedasticity distort the results of a regression analysis?
  
• What are the steps to find the lower and upper quartiles of a data set?
  
• How many different arrangements can be made with the letters from the word SPACE?
  
• The orange graph is the function f(x). How do you describe the transformations on the pink graph and write an equation for it?
  
• The graph of f(x) = sqrt (16-x^2) is shown below. How do you sketch the graph of the function y = 3f(x)-4 based on that equation (sqrt (16-x^2)?
  
• If f(x+1)=2x+7 then f(0) is equal to?
  
• Can someone help me solve this question?
  
• How do you divide £1000 in a ratio of 2:3?
  
• What is the percent change of 1 to 12?
  
• Britney is 5 feet tall and casts a 3 1/2 -foot shadow at 10:00 A.M. At that time, a nearby tree casts a 17-foot shadow. Two hours later, Britney's shadow is 2 feet long. What is the length of the shadow of the tree at this time?
  
• Absolute Value Graph help pls?
  
• Absolute Value Graph help pls?
  
• What is the square root of 80?
  
• How many permutations are there for the word numbers?
  
• What is the square root of 10 times the square root of 40?
  
• If you roll a single die, what is the expected number of rolls necessary to roll every number once?
  
• How to find 95% margin of error from 95% confidence interval?
  
• How many different 7-digit positive integers exist? (Note that we don't allow "7-digit" integers that start with 0, such as 0123456; this is actually a 6-digit integer.)
  
• A bag contains 30 discs: 10red, 10green, 10yellow. i) If 3 are drawn out in succession and not replaced, what is the probability of drawing 2 reds and 1yellow in that order? ii) If each disc is replaced after drawing what would the answer be now
  
• For angles u and v in quadrant II, if sin u = 3/5 and cos v = –5/13, how do you find the exact value of sin (v – u)?
  
• Please solve q 17?
  
• Pythagorean Theorem graphing help?
  
• Given a normal deck of # 52 # cards. If I draw five cards from the deck, what is the probability that all five cards are evenly divisible by # 3? # (assume jacks, queens, kings, and aces to not be divisible by # 3#
  
• How do we solve this? I applied the fundamental theorem of calculus and know that f(x) = 1/x and n=b/a, but this is not the correct answer. Can someone please help? Thanks in advance
  
• How do you write #32^(4/5)# in radical form?
  
• Need your help in probability problems? Thanks :)
  
• Would this statement be true regarding matrices: For ANY m x n matrices A and B, A+B = B+A, or would this only be true if the matrices were of the same size?
  
• Suppose you know σ and you want an 85 percent confidence level. What value would you use to multiply the standard error of the mean by?
  
• Why is acceleration inversely proportional to mass?
  
• A group of twenty female and twenty male students are in a room. If eight of the #40# are selected at random and put in a row for a picture, what is the probability that the eight are of the same gender?
  
• Please help! I don't know how to calculate?
  
• How do you find the reference angle of #theta=-245^circ# and sketch the angle in standard position?
  
• The scenario may be considered which of the following?
  
• Can a trapezoid be a rhombus?
  
• The mean of a set of data is -2.14 and its standard deviation is 3.94. Find the z score for a value of 5.40?
  
• A chi-square test for independence step by step explanation please?
  
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