http://www.algebra.com All new stuff on algebra.com en-us Copyright Algebra.Com 2008-07-20T17:45+00:00 webmaster@algebra.com webmaster@algebra.com for students and tutors hourly 12 1901-01-01T00:00+00:00 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148917 This problem was solved by nabla: Solve the system of linear equations by the substitution method. Then, state whether the system is independent, dependent, or inconsistent. -x+7y=4 -x+7y=3 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148920 This problem was solved by mangopeeler07: Audrey has 35 dimes and quarters in her piggy bank with a total value of $6.95. How many coins are dimes and how many are quarters? http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148920 This problem was solved by nabla: Audrey has 35 dimes and quarters in her piggy bank with a total value of $6.95. How many coins are dimes and how many are quarters? http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148915 This problem was solved by mangopeeler07: cashews sell for $5 per pound and peanuts sell for $2 per pound. How many pounds of each would you use to make 21 pounds of a mixture that sells for $3.00 per pound? http://www.algebra.com/tutors/faq.mpl?key=148922&action=answer_question Click on the link to solve this problem: After one round of golf, leo forrest was 3 shots under par. His second round score was 12 shots over par and this third round score was 7 shots under par. How many shots under or over par was Leo's score after the third round. http://www.algebra.com/tutors/faq.mpl?key=148921&action=answer_question Click on the link to solve this problem: how do I solve (x-2)(x+1)≥0 related equation: (x-2) (x+1)=0 solutions for the equation: (2,-1) intervals (-∞,-1)(-1,2)(2,∞) After this I am confused ? f(x)=(x-4)(x+2) http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148915 This problem was solved by nabla: cashews sell for $5 per pound and peanuts sell for $2 per pound. How many pounds of each would you use to make 21 pounds of a mixture that sells for $3.00 per pound? http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148884 This problem was solved by jim_thompson5910: 13.) Solve using the addition and multiplication principles 7 + 6x is less than 61 The solution set is {x l x ___ ____} http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148914 This problem was solved by mangopeeler07: I need help on these two questions 1. Solve for x when [5x-7]=14 2. Multiply the complex numbers (4+3i)(6+i) http://www.algebra.com/tutors/faq.mpl?key=148919&action=answer_question Click on the link to solve this problem: Are the answers right? University of Phoenix Material Parametric and Nonparametric Data Identification Assignment Label each of the following situations P if it is an example of parametric data or NP if it is an example of nonparametric data. 1. A manufacturer produces a batch of memory chips (RAM) and measures the mean-time-between-failures (MTBF). The manufacturer then changes a manufacturing process and produces another batch and again measures the MTBF. Did the change to the process improve the MTBF? P____ 2. From a written survey where the respondents were asked to rate an individual on a scale of 1 to 5, one group rated an individual a 3.7, another group rated the individual a 4.3. Is the difference statistically significant? __NP__ 3. A catering company is buying equipment in order to set up their own store. They have a choice of two ovens that they can purchase for the store. The used oven is $100 less than the new oven, but its heating calibration is off by 20 degrees. Which one is a better buy for them? P____ 4. Jim Smith owns three real estate offices in Anytown. He has decided to open one more office, but he cannot decide between Hometown or Uptown as the town where he wants to locate. He will be comparing the mean number of homes sold per real estate agent, and the mean commission percentage earned by agents in the two towns to make his decision. _P___ 5. A study to determine if job absenteeism is distributed evenly over the week. __NP__ 6. Mels Diner has been surveying their customers for the past couple of years about their dining experience in the restaurant. The survey uses a scale of one to five, five being best to indicate customer satisfaction. Mels customer satisfaction averaged 2.5 last year, but this year it is 2.9. Is this difference statistically significant? _NP___ 7. Sallys Beauty Salon just opened for business. Sally assigns the stylists customers on a rotation basis so that everyone is kept busy all day. One month after she opened the salon, Sallys customer count for each stylist was (a) 20 customers; (b) 30 customers; (c) 15 customers; and (d) 25 customers. Has Sally been fair in how she allocates customers to each of the stylists? _P___ 8. A comparison of salaries between male and female employees in the same organization. _NP___ http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148885 This problem was solved by jim_thompson5910: 14.) Solve then graph. y - 6 is greater than -19 The solution is {y l y is greater than ___} http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148918 This problem was solved by mangopeeler07: For Monday mornings staff meeting, Jim bought 2 bags of bagels and 3 packages of cream cheese and paid $9.75 (excluding sales tax). For Fridays meeting, he bought 4 bags of bagels and 2 packages of cream cheese and paid $12.50 (again, excluding sales tax). How much do bags of bagels and packages of cream cheese cost? http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148869 This problem was solved by jim_thompson5910: Find the GCF for the folowing groups 1)48, 80 2)42,66,78 3)6y^2,15y^3 4)12a^2b,18ab^2, 24a^3b^3 http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148916 This problem was solved by ankor@dixie-net.com: Janet and Carl decorate cakes in a bakery. Janet can decorate a cake every 0.24 hour and Carl can decorate a cake every 0.33 hour. If they work together, at what rate are they decorating cakes? Round to the nearest tenth of a cake per hour. http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148897 This problem was solved by jim_thompson5910: If A is a 3 4 matrix, B is a 4 12 matrix, and C is a 12 2 matrix, then A + B − C = ?? http://www.algebra.com/tutors/faq.mpl?key=148913&action=answer_question Click on the link to solve this problem: With these two problems, I am very confused, because math is not my thing, and I do not understand it. 1. -3[5+2(-7+x)+x]= -3x- (x+3) I do not even know where to begin with this one. 2. 4x+4/5= 5x-1/2-x/3 (the / are over signs) http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=147978 This problem was solved by assante10: 12.48 In the following regression, X = weekly pay, Y = income tax withheld, and n = 35 McDonalds employees. (a) Write the fitted regression equation. (b) State the degrees of freedom for a twotailed test for zero slope, and use Appendix D to find the critical value at α = .05. (c) What is your conclusion about the slope? (d) Interpret the 95 percent confidence limits for the slope. (e) Verify that F = t2 for the slope. a) Write the fitted regression equation. Y = 30.7963 + 0.0343X -------------------------------- (b) State the degrees of freedom for a twotailed test for zero slope, and use Appendix D to find the critical value at α = .05. df = 33 ; critical value is 2.035 (see page 782) (c) What is your conclusion about the slope? Since the p-value is 0.0068 (less than 1%), the true value is not zero. ------------------------ (d) Interpret the 95 percent confidence limits for the slope. We are 95% confident that the slope is between 0.0101 and 0.0584 ---------------------- (e) Verify that F = t2 for the slope. 2.889^2 = = 8.346321 (rounded is 8.35) http://www.algebra.com/tutors/faq.mpl?key=148912&action=answer_question Click on the link to solve this problem: Verify the identity using Aultiple-Angle Trigonometric formulas. 1a) cos^(4)x-sin^(4)x=cos2x 1b) tanθ+cotθ=2csc2θ http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148876 This problem was solved by Edwin McCravy: a survey of a school 0f 850 students found that 150 used a bus to get to school, 75 used a train and 650 user neither. using a venn diagram, calculate the number of students who used both a bus and a train to get to school. http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148878 This problem was solved by nerdybill: Factor each polynomial completely xy + 2xy + xy http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148911 This problem was solved by nerdybill: Simplfy. -3(-7/a+1/6)+5/2(3-a/2) Note: / indicates a fraction. i just can't seem to figure this out. http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148900 This problem was solved by nerdybill: Which of the following is a method for solving systems of two variables? Substitution Addition Both of the above None of the above I think it's both but not too sure http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148910 This problem was solved by stanbon: How would I be able to find the GCF of these groups? 1)48, 80 2)42,66,78 3)6y^2,15y^3 would this one be 3y^2 4)12a^2ab, 18ab^2,24a^3b^3 would the GCF of this group br 4ab or 6ab? Am I correct on this one? http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148859 This problem was solved by stanbon: Greetings, Statistics question. questeion posed by an English as a second language statistics intructor. 2) Can the bell shaped curve on the graph of normal distribution cross the x-axis? Explain your answer. Thanks for the help, Dennis Wade http://www.algebra.com/cgi-bin/jump-to-question.mpl?question=148907 This problem was solved by stanbon: Hello, my name is gabrielle and i been stuck on these four ptoblems for a long time and i was wondering if you could show me the work and the answers? 1.an angle measure 14 degress less than three times its compliment. find the measure of the angle and it compliment. 2. the length of a rectangle is 4ft longer than twice its wifth. find the dumension of a rectangle if its perimeter is 58 ft. 2. one angle of a triangle measure 9 degress more than the second angle. the third angle is seven times larger than the second angle. find the measures of each angle of the triangle. 4. the width of a rectangle is 3 feet shorter than its length. the perimeter is 76 decreased by the width. find the dimensions of the rectangle. i would like for these answer to be answered on july 20th no later than 8 pm. thank yo and have a nice day.