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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 329453: i need help learningaligebra so i can start coledge Click here to see answer by Alan3354(31487)

 Question 329372: Can you help me solve, the solution set is {r|r ___ ___ } 4 (r-7) + 1 > 5 (r+2) - 27 Thanks a million :o) Click here to see answer by Fombitz(13828)

 Question 329455: the depth of a lake is 26 meters. melting snow causes the lake to rise 0.05 meters each day. at the end of 8 days, what will be the dept, in meters,of the lake? Click here to see answer by Alan3354(31487)

 Question 329489: Find the equation of the line that has an undefined slope and passes through the point (4,-5) Click here to see answer by Fombitz(13828)

 Question 329497: List all possible rational zeros of f using the rational zero theorem. Then find all the zeros of the function. f(x) =X^3 +x^2 -10x +8 Click here to see answer by nyc_function(2733)

 Question 329496: Student tickets for a football game cost \$2 each. Adult tickets cost \$4 each. Ticket sales at last week's game totaled \$2800. Write a linear model that shows the different number of students and adults who could have attended the game. Click here to see answer by nyc_function(2733)

 Question 329501: The variable z varies jointly with x and y. Use the given values to write an equation relating x, y, and z. Then find z when x=-1 and y=4. 1) x=2, y=4, z=-2 2) x=4, y=1/2, z=-1 Click here to see answer by Alan3354(31487)

 Question 329549: There are 112 male and 78 females working at a hospital. What percentage of the hospitals workforce is female? Click here to see answer by ankor@dixie-net.com(15745)

 Question 329490: Find the x-intercepts and y-intercepts of the line that passes through the point (3,-5) and is perpendicular to the line x -3y =-2 Click here to see answer by Fombitz(13828)

 Question 329615: The smaller number is less than the larger number Click here to see answer by Alan3354(31487)

 Question 329759: I am having difficulties with solving this problem and hope you can help. Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 76.5' Find the measures of the angles. What is the measure of the smaller angle? What is the measure of the other angle? Thanks :o) Click here to see answer by Alan3354(31487)

 Question 329766: Hi can you help me solve this problem that has been difficult for me. I am to solve the system of equations by graphing and then classify the system. 3x -9y = 36 2x -6y = -8 What would the graph look like and would this be inconsistent or consistent, dependent or independent? Thanks :o) Click here to see answer by stanbon(57940)

 Question 329793: I was given a perfect graph for this problem however I am not sure if there: Is a solution? Is there infinitely many solutions? There are no solutions? Again the problem was: Solve the system of equations by graphing then classify the system. 3x - 9y = 36 2x -6y = -8 Thank you for helping me. :o) Click here to see answer by mananth(12270)

 Question 329790: I need some help with determining whether the given numbers are solutions of the inequality? 0, -19, -10, -3 y -9 > 2y -4 Is "0" a solution? Is "-19" a solution? Is "-10" a solution? Is "-3" a solution? Thanks :o) Click here to see answer by edjones(7569)

 Question 330171: A winch has a handle with a radius of 18 in. and a drum of radius 3.0 in. How much force is required to lift a 120 lb weight? Express your answer in US units to the nearest whole unit. Click here to see answer by Fombitz(13828)

 Question 330167: A worker uses a wheelbarrow to haul 225 lb of brick. The handles are located 4.00 ft from the axle; the center of the load is 1.50 ft from the axle. How much upward force does the worker exert to lift the handles of the wheelbarrow? Express your answer in US units to the nearest tenth of a unit. Click here to see answer by galactus(183)

 Question 330275: Calculus Derivatives I need to find the derivative of y = 4 cot^3 2x Click here to see answer by Fombitz(13828)

 Question 330387: I am learning how to solve the problem and just need some help with making sure I am doing it correctly. I need to solve the system of equations by graphing. Then classify the system as consistent, inconsistent, and dependent, or independent. 6x - 5y + -25 5y -6x = 25 Thanks for your help :o) Click here to see answer by Alan3354(31487)

 Question 330348: Julie and Eric row their boat at a constant speed 40 miles downstream for 4 hours helped by the current rowing at the same rate the trip back against the current takes 10 hours find the rate of the cirrent Click here to see answer by scott8148(6628)

 Question 330399: I need help with solving this problem and need your help please. Evaluate x + y for z = 77 and y = 4 ----- 9 solution is z + y = ______ ----- 9 THanks a bunch :o) Click here to see answer by edjones(7569)

 Question 330539: A winch has a handle with a radius of 18 in. and a drum of radius 3.0 in. How much force is required to lift a 120 lb weight? Click here to see answer by Fombitz(13828)

 Question 330392: I am learning algebra and having difficulty in solving this story problem can you please guide me through it. The function H described by h (x) = 2.75x + 71.48 can be used to predict the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is X cm long. Predict the height of a woman whose humerus is 35cm long. Click here to see answer by Alan3354(31487)

 Question 330554: Hi I am needing help with solving the following system of equations x + 3y = 4 (1) x = 7-3y (2) What is the solution or is there no solution? Thanks a bunch. Click here to see answer by Fombitz(13828)

 Question 330577: Guiseppe and norbert could go 78 miles downstream in the same time it took them to go 18 miles upstream. If the speed of their boat was 8 mph in still water, what was the speed of the current and what were their times ? Click here to see answer by Fombitz(13828)

 Question 330579: Hypatia could row 90 miles downstream in 6 hours but required 8 hours to row 72 miles upstream. What was her speed in still water and what was the speed of the current? Click here to see answer by checkley77(12569)

 Question 330786: Can you please help me solve Find the slope if it exists, of the line containing the pair of points. (4,3) and 9,-2) The slope m+ _____? Thank you! Click here to see answer by texttutoring(324)

 Question 330785: Can you please help me solve, Find the slope and the y-intercept f(x) = -10x -9 The y-intercept is _____? The slope is _____? Thanks a bunch :o) Click here to see answer by texttutoring(324)

 Question 330781: Will someone please help me with this story problem that has been a struggle for me. Trains A and B are traveling in the same direction on parrellel tracks. Train A is traveling at 100 miles per hour and train B is traveling at 125 miles per hour. Train A passes a station at 2:25PM. If train B passes the same station at 2:37PM at what time will train B catch up to train A? When will train B catch up to train A? ___:___ am or pm? Thanks for your help. Click here to see answer by mananth(12270)