Answers created by Jason K.

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• Question #fb8ba
  
• A card is drawn from a shuffled deck of 52 cards, and not replaced. Then a second card is drawn. What is the probability that the second card is a king?
  
• What is the conditional probability that a card drawn at random from a pack of 52 cards is a face card, given that the drawn card is a spade?
  
• Numbers that are palindromes read the same forward and backward, For example, 30203 is a five-digit palindrome. If a single number is chosen randomly from the set of all two-digit numbers, what is the probability that it will be palindromic?
  
• The medical records for a class of 28 children show whether they had previously had measles or mumps. The records show 22 have had measles, 13 have had measles and mumps, and 27 have had measles or mumps. How many children had mumps?
  
• How to solve extended response question using probability?
  
• How do you write a polynomials of least degree with integer coefficients that has the given zeros in expanded form?
  
• How do you find a set of numbers that will satisfy the following conditions?
  
• How to do this hypothesis testing question?
  
• A heterozygous white-fruited squash plant is crossed with a yellow-fruited plant, yielding 200 seeds. Does the data support or not support the hypothesis?
  
• Question #71f41
  
• A projectile is shot from the ground at a velocity of #1 m/s# and at an angle of #(7pi)/12#. How long will it take for the projectile to land?
  
• What is the interquartile range of the set of data: 67, 58, 79, 85, 80, 72, 75, 76, 59, 55, 62, 67, 80?
  
• Question is about z-scores....?
  
• Question #aac39
  
• Question #2cf0b
  
• A bag contains 12 sweets, of which 5 are red, 4 are green and 3 are yellow. 3 sweets are chosen without replacement. What is the probability that he chooses 1 sweet of each color?
  
• Question #ac7d4
  
• How do you find the area under the normal distribution curve to the right of z = –3.24?
  
• Question #31a86
  
• For a normal distribution, what is the probability that the data falls somewhere .5 standard deviations from the mean?
  
• Question #b0568
  
• Barbara and John and six other people go through a doorway one at a time. Find the number of ways in which the eight people can go through the doorway if John goes through the doorway after Barbara?
  
• Question #57c64
  
• Question #f19b2
  
• Question #6bcb7
  
• Seven athletes participate in a 100-meter sprint event. How many possible finishes are there for the first 3 positions?
  
• How do you use synthetic division and the Remainder Theorem to find #P(a)#, if #P(x) = 6x^4+19x^3-2x^2-44x-24# and #a=-2/3#?
  
• The number of accidents is .4 accidents / day. What is the probability that the time from now to the next accident will be more than 3 days?What is the probability that the the time from now to the 3rd accident will be more than 5 days?
  
• Question #28892
  
• How does an outlier affect the mean of a population?
  
• Question #fb52f
  
• A set of data has a normal distribution with a mean of 180 and a standard deviation of 20. What percent of the data is in the interval 140 - 220?
  
• Question #9f54d
  
• Question #9cbb8
  
• Using the figure below, estimate the following?
  
• A banker finds that the number of times people use automated-teller machines in a year are normally distributed with a mean of 40.0 and a standard deviation of 11.4. What is the percentage of customers who use them less than 25 times?
  
• A batch of 200 phones contains 195 good phones and 5 defective ones. If 2 phones are selected at random, what is the probability of selecting 1 working phone and 1 defective phone?
  
• One card is selected at random from a deck of cards. What is the probability that the card selected is a spade or a queen?
  
• How do you find the center and vertices of the ellipse #x^2/25+y^2/16=1#?
  
• Question #ddd87
  
• How do you divide #\frac { 42x ^ { 5} - 30x ^ { 4} + 30x ^ { 2} } { - 6x ^ { 2} }#?
  
• Robert is writing a test with 20 multiple choice questions, each with 4 possible answers. If he selects his answers by random guessing, how many questions is he expected to answer correctly?
  
• A fair 6-sided die is rolled three times. Find the probability that the sum of the three dice is 4 ?
  
• Catfish weights are normally distributed with a mean of 3.2 pounds and a standard deviation of 0.8 pounds. What is the probability that a randomly selected catfish weighs between 3 and 4 pounds?
  
• Question #786ba
  
• How do you evaluate #(x ^ { 2} - 10x ^ { 2} + 30x + 76) \div ( x ^ { 2} - 4x - 7)#?
  
• How do you evaluate #(5- 8i ) ( 5- 5i )#?
  
• Optimization - Find the surface area of a domed cylinder?
  
• The mean score for a standardized test is 1700 points. The results are normally distributed with a standard deviation of 75 points. What is the z-score test result of 1800 points?
  
• On average a shop sells 750 kg per day with a standard deviation of 60 kilo’s. We assume sales are normal. If the shop has 850 kilograms in stock at the beginning of the day, what is the probability it runs out that day?
  
• How to find the rate at which water is being pumped into the tank in cubic centimeters per minute? details below:
  
• Question #ae7c0
  
• How do you find the inverse of #A=##((4, 9, 15), (15, 17, 6), (24, 0, 17))#?
  
• How do you describe the end behavior for #f(x)=-x^5+4x^3-2x-2#?
  
• What is the value of b?
  
• Question #a5339
  
• How do you solve the system #3x+5y-2z=20#, #4x-10y-z=-25#, #x+y-z=5#?
  
• Question #c84c8
  
• How do you find all points of inflection given #y=2x^2+4x+4#?
  
• Please write the equation of the conic section given the following information?: A hyperbola with vertices #(0,-6)# and #(0,6)# and asymptotes #y=3/4x# and #y=-3/4x#
  
• How do you write an equation of a ellipse with center (0,4) and a=2c, vertices (-4,4), (4,4)?
  
• Question #69994
  
• How do you write the trigonometric form of #1+6i#?
  
• Question #e7bdd
  
• Question #eae0d
  
• What are the domain and range for #x^2 + 9y^2 = 25#?
  
• How do you solve #9x ^ { 4} + 18x ^ { 3} + 9x ^ { 2} = 0#?
  
• How do you divide #6x^3+5x^2-4x+4# by #2x+3#?
  
• Question #6f115
  
• Question #bc61b
  
• Question #42a53
  
• How do you write #1-i# in trigonometric form?
  
• What are the leading coefficient and degree of the polynomial #-12u ^ { 7} + 5+ 7u ^ { 5} - 23u ^ { 2}#?
  
• How do you evaluate #\lim _ { x \rightarrow 2} \frac { \frac { 1} { x } - \frac { 1} { 2} } { x - 2}#?
  
• How do you use the properties of logarithms to expand #ln((x^4sqrty)/z^5)#?
  
• Question #9ae7b
  
• Question #0b5ad
  
• How do you factor #8x ^ { 3} + 7x ^ { 2} - 32x + 28# completely?
  
• How do you integrate #int (3x-2x^2)/((x+9)(x+7)(x+1)) # using partial fractions?
  
• Given there is f(x) = #(3x)/(x^2+1)#=c. How many roots does f(x) has for a ) c>#3/2# b) c=#3/2# c) 0<c<#3/2#?
  
• Determine the value of the constant ''a'' for wich the funcion is continuous at x==-5 f={(x^2+6x+5)/x+5 if x not equal -5 a if x = -5 ?
  
• What's the function whose roots are #2i (m2), 4-i, and i\sqrt 3#?
  
• What is the equation of the tangent line of #f(x)=1/x-sqrt(x+1) # at #x=3#?
  
• How do you evaluate #f(x)=-x^4+x^3-x+1# at x=-3 using direct substitution and synthetic division?
  
• Question #a2849
  
• Express K in terms of L ?? #log_3 K - log_9 L = 2#
  
• How do you find the derivative using limits of #f(x)=sqrt(x+1)#?
  
• How are these calculus questions different?
  
• Help! Find all zeros: #f(x)=3x^7-32x^6+28x^5+591x^4-1181x^3-2810x^2+5550x-1125#?
  
• Question #2cc5b
  
• Question #f094e
  
• Question #43247
  
• What is the correct option from given options? pls explain your answer
  
• Adele went to the post office to buy stamps and postcards. She bought a total of 25 stamps, some 39-cent stamps and the rest 23-cent postcards. If she paid $8.47 altogether, how many 39-cent stamps did she buy?
  
• Question #8c403
  
• How do you sketch the graph that satisfies f'(x)>0 when -1<x<3, f'(x)<0 when x<-1 and when x>3, and f(-1)=0, f(3)=4?
  
• Question #8b3ee
  
• How do you solve using gaussian elimination or gauss-jordan elimination, #x-2y+z=1#, #2x-3y+z=5#, #-x-2y+3z=-13#?
  
• How do you differentiate #f(x)=(x^3)(ln3x)(e^x) # using the product rule?
  
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