Keonn'a

Most popular questions and responses by Keonn'a
  1. Math

    Three even numbers sum up to 126. The smaller is half the larger and the middle number is 3/4 the larger. What are the three numbers (list in order from smallest to largest).

    asked on September 23, 2017
  2. College Algebra

    The Jones family took a 24-mile canoe ride down a river in two hours. After lunch the return trip back up the river took four hours. Find the rate of the canoe in still water.

    asked on September 20, 2017
  3. Algebra

    The maximum load a beam will support varies directly with the square of the diagonal of the beam's cross section.A beam with diagonal 6 inch will support a maximum load of 108 pounds. What load will a beam with a 10 inch diagonal support?

    asked on October 29, 2017
  4. College Algebra

    Macario is making 17 pounds of nut mixture with macadamia nuts and almonds. Macadamia nuts cost $9 per pound and almonds cost $5.75 per pound. How many pounds of almonds should Macario use for the mixture to cost $127.00 per pound to make.

    asked on September 3, 2017
  5. Algebra

    Factor completely (x-2/3)^2-16(x-2/3)+63

    asked on October 31, 2017
  6. Math

    Suppose you deposit $2000 in an account with an annual interest rate of 7% compounded quarterly. Use the formula A=P(1+r/n)^n*t and round each answer to 2 decimal places, if necessary. a. Find an equation that gives the amount of money in the account after

    asked on December 4, 2018
  7. Math

    Susan invests 3 times as much money at 7% as she does at 4%. If her total interest after 1 year is $1250, how much does she have invested at each rate?

    asked on October 16, 2018
  8. Algebra

    Each of the following temperature ranges is in degrees Fahrenheit. Use the formulaF=9/5C+32 to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion). a.23∘ to 50 ∘ b.68∘ to 86∘ c. -4∘ to 14∘

    asked on September 8, 2018
  9. Statistics

    Which Professor? Suppose Professor Alpha and Professor Omega each teach Introductory Biology. You need to Decide which professor to take the class from and have just completed your introductory statistics course. Records obtained from the past students

    asked on February 19, 2018
  10. Math : Statistics

    The length of a rectangle is 2 meters more than 2 times the width. If the area is 12 square meters, find the width and the length.

    asked on November 2, 2018
  11. algebra

    A company finds that it can make a profit of P dollars each month by selling x patterns, according to the formula P(x)=−0.002x^2+4.5x−800 . How many patterns must it sell each month to have a maximum profit? _______________ patterns What is the maximum

    asked on November 27, 2018
  12. Statistics

    Teen Communication The following data represent the number of different communication activities (e.g., cell phone, text messaging, e-mail, Internet, and so on) used by a random sample of teenagers over the past 24 hours. (a) Are the events “male” and

    asked on March 13, 2018
  13. College Algebra

    A projectile is thrown upward so that it's distance (in feet) above ground after t seconds is given by h(t)=-10t^2+440t. What is its maximum height?

    asked on May 3, 2017
  14. Math

    Factor 9. 6a^4-11a^2-10 10. 2x^2(x-1)+3x(x-1)-2(x-1)

    asked on November 1, 2018
  15. Math

    z varies jointly with y and the square of x. If z=256 when y=-8 and x=-4, find z when x=-3 and y=-4.

    asked on November 27, 2018
  16. Math : Statistics

    The formula h=vt−16t^2 gives the height h, in feet, of an object projected into the air with an initial vertical velocity v, in feet per second, after t seconds. If an object is projected upward with an initial velocity of 112 feet per second, at what

    asked on November 2, 2018
  17. Math

    How long will it take for $2,000 to double if it is invested at 7% annual interest compounded 3 times a year? Enter in exact calculations or round to 3 decimal places. It will take years to double. How long will it take if the interest is compounded

    asked on December 9, 2018
  18. Statistics

    The length a spring stretches is directly proportional to the force applied. If a force of 7 pounds stretches a spring 8 inches, how much force is necessary to stretch the same spring 3 inches?

    asked on November 27, 2018
  19. Algebra

    The height of an launched from the ground after t seconds is given by h(t)=-16t^2+32t. How long for the object to obtain a height of 32ft. Hit the ground?

    asked on April 18, 2017
  20. Math

    simplify the following, leaving your final in lowest terms (x)/(x+2)+(5-x)/(x)-(4)/(x^2+2x) I got my answer as 3/x is that right?

    asked on November 8, 2018
  21. Math

    Combine the following rational expressions 1/2y-5-30/8y^3-125 Lcm:(2y-5)(4y^2+10y+125) =1*4y^2+10y+25/(2y-5)(4y^2+10y+25)-30/(2y-5)(4y^2+10y+25) =4y^2-10y+25-30/(2y-5)(4y^2+10y+25) =(4y^2+10y-5)/(2y-5)(4y^2+10y+25) Please correct my answer and I know it is

    asked on November 6, 2018
  22. Math

    The sum of a number and its reciprocal is 37/6. Find the number.

    asked on November 8, 2018
  23. Help College Algebra

    A ball is projected upward from the ground. Its distance in feet from the ground in t seconds is given by s(t) = -16t^(2)+128t At what will the ball be at 213ft from the ground?

    asked on April 18, 2017
  24. Algebra

    The following problem refers to an arithmetic sequence. If the seventh term is 9 and the fourteenth term is 16, find the term a1, the common difference d, and then find a27 and S27

    asked on September 27, 2018
  25. Math

    combine the following rational expressions (2x+2)/(3x^2+6x+3)+x-7/3x^2-3

    asked on November 6, 2018
  26. Math : Statistics

    The dimensions of a rectangular photograph are even consecutive integers. The area of the photograph is 224square inches. Find the lengths of each side.

    asked on November 2, 2018
  27. Math

    Graph the solution set for the of linear inequalities. x−y≤4 x+3y≤4 x≥−5

    asked on October 18, 2018
  28. Statistics

    A box contains twelve candies, five reds, four greens, and three blues. You select one piece at random, then replace it, then you select another. If P(BG) is the probability of selecting a blue first and a green second, find the following probabilities. a.

    asked on October 13, 2018
  29. Math

    Find the third term of (2n+3m)^5 720n^3m^2 I received as my answer.

    asked on October 29, 2018
  30. Math

    The Empirical Rule: The weight,in the grams, of the pair of kidneys in adult males the ages of 40 and 49 has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 30 grams. A) About 95% of kidney pairs will be between what

    asked on February 18, 2018
  31. Statistics

    The frequency of an electromagnetic wave varies inversely with the wavelength. If a wavelength of 200 meters has a frequency of 800 kilocycles per second, what frequency will be associated with wave length of 400 meters?

    asked on November 27, 2018
  32. Math Help me.

    Reduce the rational expression to lowest terms. If it is already in lowest terms, enter the expression in the answer box. Also, specify any restrictions on the variable. 25x^2−30x+8/25x^2−16

    asked on November 4, 2018
  33. Math

    Suppose A and B are events with P (A)=0.25, P(A or B)=0.5, and P (A and B )=0.07. Find each of the following. a. P(B)=0.07/0.25=.28 b. P (not B)= Please help me I need the steps to solve the question

    asked on October 9, 2018
  34. Math

    divide using the long division method. 6x^3-57x-13/3x+9

    asked on November 27, 2018
  35. Algebra

    find the sum of the infinite geometric series 1/3+1/9+1/27 sum=a_1/1-r

    asked on September 28, 2018
  36. Math

    Suppose a deposit of $3,500 in a savings account that paid an annual interest rate r (compounded yearly) is worth $3,910 after 2 years. Using the formula A=P(1+r)^t, we have 3,910=3,500(1+r) ^2Solve for r to find the annual interest rate (to the nearest

    asked on November 24, 2018
  37. Math

    please show the steps so I can compare mine. Simplify the following , leaving your final answer in lowest terms. x/x+2+5-x/x-4/x^2+2x I got for my answer 3/x. Is it correct?

    asked on November 8, 2018
  38. Math

    Factor the following by taking out the greatest common factor. 9a^3b^2+81a^2b^3+108a^3b^3

    asked on October 30, 2018
  39. Math

    Use the product property for radicals to simplify the following radical expressions as much as possible. Assume all variables represent positive numbers. Use sqrt(x) for √x and root(x)(y) for x√y. 3√750x^4y^7

    asked on November 28, 2018
  40. Math

    Reduce the rational expression to lowest terms. If it is already in lowest terms, enter the expression in the answer box. Also, specify any restrictions on the variable. 6a^4+162a^3a^4−9a^3+27a^2

    asked on November 4, 2018
  41. Statistics

    A coin is tossed 10 times. The probability of getting a head on any one toss is 0.5. To the nearest thousandth, find the probability of getting 4 heads.

    asked on October 14, 2018
  42. Math

    The volume of a gas is inversely proportional to the pressure. If a pressure of 30 pounds per square inch corresponds to a volume of 48 cubic feet, what pressure is needed to produce a volume of 60 cubic feet?

    asked on November 27, 2018
  43. Statistics

    z varies jointly with y and the square of x. If z=256 when y=−8 and x=−4, find z when x=−3 and y=−4.

    asked on November 27, 2018
  44. Math Algebra

    divide using the long division method. 2a^3-12a^2-26a-20/2a-4=-a^3+6a^2+13a+10/a-2 Please help me with the steps because I get the wrong answer.

    asked on November 27, 2018
  45. Math

    6x+18/3x^2divide by x^2+5x+6/x^3-4x= I got 2(x-2)/x as my final answer. Please explain the steps. Thanks.

    asked on November 8, 2018
  46. Algebra

    Amtrak's annual passenger revenue for the years 1985-1995 is modeled approximately by the formula R=-60|x-11|+962 where R is the annual revenue in millions of dollars and x is the number of years after 1980. In what year was the passenger revenue $722

    asked on September 8, 2018
  47. Statistics

    . According to the U.S. Census Bureau, the probability that a randomly selected head of household in the United States earns more than $100,000 per year is 0.202. The probability that a randomly selected head of household in the United States earns more

    asked on March 13, 2018
  48. Math

    Solve the follwing Equation (3)/(x+2)+(6)/(x^2+2x)=(3-x)/x I got no solution.

    asked on November 8, 2018
  49. Math

    Reduce the rational expression to lowest terms. If it is already in lowest terms, enter the expression in the answer box. Also, specify any restrictions on the variable. 6a^4+162a/3a^4-9a^3+27a^2

    asked on November 6, 2018
  50. Statistics

    A coin is tossed 8 times. The probability of getting a head on any one toss is 0.5. To the nearest thousandth, find the probability of getting 4 heads. P(4 heads)=we want 4 of 8 heads 8 nCr 4 (1/2)^4(1-1/2)^8-4 70(1/16)*(1/2)^4 I am lost from here

    asked on October 14, 2018
  51. Statistics

    How many different hands of 4 cards can be selected from a standard 52 card deck?

    asked on October 7, 2018
  52. Math

    Paul mixes nuts worth $1.20 per pound with oats worth $1.70 per pound to get 40 pounds of trail mix worth $1.35 per pound. How many pounds of nuts and how many pounds of oats did he use?

    asked on September 21, 2017
  53. College Algebra

    A chicken farm ideally produces 300,000 eggs per day, but this total can vary by as much as 12,500 eggs per day. What is the maximum and minimum expected production at the farm?

    asked on September 9, 2017
  54. algebra

    y varies directly with the square x. If y=8 when x=2, find y when x=3.

    asked on November 27, 2018
  55. Math

    Reduce the rational expression to lowest terms. If it is already in lowest terms, enter the expression in the answer box. Also, specify any restrictions on the variable. 6a^4+162a/3a^4−9a^3+27a^2 6a^4+162a/3a^4-9a^3+27a^2 6a^3*a+6*27a/3a^4-9a^3+27a^2

    asked on November 4, 2018
  56. Math

    The total cost (in dollars) for a company to manufacture and sell x items per week is C(x)=70x+400. If the revenue brought in by selling all x items is R(x)=90x−0.05x^2, find the weekly profit. How much profit will be made by producing and selling 60

    asked on October 25, 2018
  57. Math : Statistics

    A box contains seven candies, four of which are green, and three of which are blue. You select one piece at random, then without replacing the first one, you select another. If P(BG) is the probability of selecting a blue first and a green second, find the

    asked on October 13, 2018
  58. College Algebra

    Suppose an investment account is opened with an intial deposit of $12,000 earning 9.6% interest. Round all answers to the nearest dollar. a. How much will the account be worth after 20 years if it is compounded monthly? $ b. How much will the account be

    asked on November 18, 2017
  59. Math

    Simplify the expression. Do not assume the variables represent positive numbers. √64a^2

    asked on November 28, 2018
  60. College Algebra

    The fox population in a certain region has an annual growth rate of 9% per year. In the year 2012, there were 20,700 foxes counted in the area. What is the fox population predicted to be in the year 2020? Round to the nearest fox. #Foxes

    asked on November 18, 2017
  61. Algebra

    4 ∑ i=1(x−1i)= (x-1(1) +(x-1(2)+(x-1(3)+(x-1(4) I am struck I need some help. Did I expand the problem right?

    asked on September 27, 2018
  62. College Algebra

    A phone company has a monthly data plan where a customer pays flat monthly fee of $30 and then a certain amount of money per gigabyte (GB) of data used on the phone. If a customer uses 3 GB, the monthly cost will be $42. If the customer uses 8 GB, the

    asked on September 10, 2017
  63. College Algebra

    v=1/3*3.14r^2h for r

    asked on April 18, 2017
  64. Math

    Reduce the rational expression to lowest terms. 250y+100xy+10x^2y/125y−5x^2y

    asked on November 4, 2018
  65. Math

    From a group of 10 players a team 4 will be chosen for a dodgeball team. How many different teams are possible. 10 nCr 4 =210 but how can I work it out.

    asked on October 29, 2018
  66. College Algebra

    The area of a rectangular carpet is 12 square feet. The length is four feet more than the width. Find the length and the width of the carpet.

    asked on October 4, 2017
  67. Math

    The sum of three numbers is 16. Two times the smallest is 2 less than the largest, while the sum of the largest and smallest is 11. Use a linear system in three variables to find the three numbers.

    asked on October 16, 2018
  68. Math

    this a system of equations A merchant decides to mix peanuts worth 5.25 per pound and trail mix worth 2.75 a pound to make a 10 pound mixture worth 4.75 per pound. how many pounds of each should his mixture contain? please help me.

    asked on October 16, 2018
  69. Math

    write the slope intercept form of the equation of the line with the following conditions. 19. passing through (4,-2) and (-8, -5). 21. passing through (-5,9) and parallel to 3x+y=1. 23. passing through (4,1) and perpendicular to 2x-y=8.

    asked on February 6, 2018
  70. Math

    Use the Binomial Theorem to write the first three terms of the binomial. (x+2y)^10

    asked on October 29, 2018
  71. Statistics

    A bag contains 5 blue candies and 6 green candies. You randomly pick a piece of candy from the bag, observe the color, then put it back in the bag. You repeat this process 5 times. Find the following probabilities (rounded to the nearest thousandths): a.)

    asked on October 13, 2018
  72. Statistics

    A baseball coach has a team of 22 players .In how many ways can be select a lineup of 9 players to start the game. ( order matters)

    asked on October 7, 2018
  73. Algebra

    the following problem refers to a geometric sequence. If a_1=5 and r=3, find a_n. a_n=a_1 *r^n-1

    asked on September 26, 2018
  74. College Algebra

    A ball is projected upward from the ground. Its distance in feet from the ground in t seconds is given by s(t) = -16t^(2)+128t At what times will the ball be at 213ft from the ground?

    asked on April 18, 2017
  75. Math

    Find the third term of (2n+3m)^5

    asked on October 29, 2018
  76. Math

    Graph the solution set for the of linear inequalities. x−y≤3 x+3y≤3 x≥−2

    asked on October 18, 2018
  77. Math

    A manufacturing company finds that they can sell 300 items at $3.50 per item and 500 items at $ 1.50 $1.50 per item. If the relationship between the number of items sold x x and the price per item p p is a linear one: Find a formula that gives x in terms

    asked on October 16, 2018
  78. Math

    you selected one card from a deck of 52.what is the probability that is a face card; 12/52 face card or a heart 15/52

    asked on October 9, 2018
  79. Math

    Two six-sided dice are rolled at the same time and the numbers showing are observed. Find the following. a. (P=sum of 8) 2 dice: (3,5) (5,3), (2,6), (6,2) c. P(sum is an odd number) 2 dice (1,5) (3,3) (5,1) I am lost here please help me with the further

    asked on October 9, 2018
  80. Statistics Math

    . Drawing a Card Suppose that a single card is selected from a standard 52-card deck. What is the probability that the card drawn is a club? Now suppose that a single card is drawn from a standard 52-card deck, but we are told that the card is black. What

    asked on March 13, 2018
  81. Algebra

    A total of 900 tickets were sold for a game for a total of $1,775.00. If adult tickets sold for $2.50 and children's tickets sold for $1.50, how many of each kind of tickets were sold?

    asked on September 21, 2017
  82. Math

    It takes a boat 2 hours to travel 26 miles downstream and 4 hours to travel 28 miles upstream.

    asked on October 16, 2018
  83. Math

    In December 2010, the average price of regular unleaded gasoline excluding taxes in the United States was $3.06 per gallon, according to the Energy Information Administration. Assume that the standard deviation price per gallon is $0.06 per gallon to

    asked on February 19, 2018
  84. Algebra 1

    A grocery store reduced the price of a loaf of bread from $3.80 to $3.67. Find the percent change (discount rate). Round to the nearest tenth of a percent.

    asked on August 30, 2017
  85. College Algebra

    The height of an object launched from the ground after t seconds is given by h(t)=-16t^2+32t. How long for the object to obtain a height of 32ft. Hit the ground.

    asked on April 18, 2017
  86. College Algebra

    The height of an launched from the ground after t seconds is given by h(t)=-16t^2+32t. How long for the object to obtain a height of 32ft. Hit the ground?

    asked on April 18, 2017
  87. Statistics

    You draw a card from a deck of 52 cards twice, each time replacing the card. Find the following probabilities (rounded to the nearest thousandths) of observing: a.) exactly 1 black card. P(1 black card)= b.) exactly 1 club. P(1 club)= c.) exactly 1 two.

    asked on October 13, 2018
  88. Statistics

    How many two-person committees can be selected from a set of 8 people. 8nCr2=28 I need a reason why it is 28 when you input it into the calculator

    asked on October 7, 2018
  89. Algebra

    find the sum of the infinite geometric series 4+1+1/4+...

    asked on September 28, 2018
  90. algebra

    15. Each of the following temperature ranges is in degrees Fahrenheit. Use the formula F=95 C+32 to find the corresponding temperature range in degrees Celsius (using interval notation and assume inclusion). 16.The fuel efficiency (mpg rating) for cars has

    asked on August 31, 2018
  91. Math

    According to the Department of Health and Human Services, 30% of 18- to 25-year-olds have some form of mental illness. (a) What is the probability two randomly selected 18- to 25-year-olds have some form of mental illness? (b) What is the probability six

    asked on March 15, 2018
  92. math

    A manufacturing company finds that they can sell 300 items at $3.50 per item and 500 items at $1.50 per item . If the relationship between the number of items sold x and the price per item p is a linear one : Find a formula that gives x in terms of

    asked on October 18, 2018
  93. Math

    one number is 3 more than 3 times another. The sum of the numbers is 11. Find the two numbers.

    asked on October 16, 2018
  94. Statistics

    A box contains 7 pieces of candy: 1 green, 1 blue, and 5 red. You select one piece at random. Find the following probabilities: a.) P(green or red ) = 5/7-1/7=4/7 b.) P(green and red ) =6/7 c.) P (green or blue ) = 1/7-1/7=7 d.) P(not(green or blue) )

    asked on October 9, 2018
  95. Math

    . According to the U.S. Census Bureau, the probability that a randomly selected head of household in the United States earns more than $100,000 per year is 0.202. The probability that a randomly selected head of household in the United States earns more

    asked on March 13, 2018
  96. Math

    Multiply the following using the FoIL method. (5x-2/5) (5x+1/5) I got 25x^2-3x+2/25

    asked on October 27, 2018
  97. Math

    Find the break-even point for the following. Draw your own graph on a piece of paper. Fixed cost = $20,000 Variables cost = $13 per item Price = $23

    asked on October 19, 2018
  98. Math

    an airplane flying with the wind can cover 660 miles in 2 hours. The return trip against the wind takes 2 1/2 hours.

    asked on October 16, 2018
  99. Statistics

    A box contains twelve candies, five reds, four greens, and three blues. You select one piece at random, then replace it, then you select another. If P(BG) is the probability of selecting a blue first and a green second, find the following probabilities. a.

    asked on October 13, 2018
  100. Statistics

    A coin is tossed 8 times. The probability of getting a head on any one toss is 0.5. To the nearest thousandth, find the probability of getting 4 heads.

    asked on October 13, 2018

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