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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 615196: 2x^2+8x+8= Click here to see answer by Alan3354(30993)

 Question 615266: 2x2-30 0 Click here to see answer by Alan3354(30993)

 Question 615305: The class president randomly selets a three person committee from eight fellow classmates. How many different committees are possible? Click here to see answer by stanbon(57387)

 Question 615308: if someone had a batting average of .311 during a regular season, how many hits would you expect him to get in the playoffs if he has a total or 68 at-bats? Click here to see answer by stanbon(57387)

 Question 615342: What is an equation of the line that passes through (3,-2) and has a slope of -1 Click here to see answer by jim_thompson5910(28598)

 Question 615341: What is the slope-intercept form of x-3y=4 Click here to see answer by solver91311(16897)
 Question 615341: What is the slope-intercept form of x-3y=4 Click here to see answer by Maths68(1474)

 Question 615340: What is the slope of a line passing through (-1,6) and (2,-3) Click here to see answer by solver91311(16897)

 Question 615339: simplify the expression -(z-2)+4z Click here to see answer by Maths68(1474)

 Question 615282: 27/(x+1)^2-3/(x+1)=4 Click here to see answer by math33(31)

 Question 615381: What is the correct way of writting 1970 in Roman Numeral pls tell Click here to see answer by Alan3354(30993)

 Question 615417: Hello, I would like some help with this problem: if it takes 30 seconds to make each cut, how long (in minutes) will it take to cut 14 boards that are 15 feet long into boards that are 3 feet long if one board can be cut at a time? I can picture the problem and think is 5, but I don't know how to represent it in a formula. Thank you. Click here to see answer by stanbon(57387)

 Question 615416: The variable x and y vary directly. When x=-4, y=16. What is the constant of variation? Click here to see answer by stanbon(57387)

 Question 615415: What is the equation of the line that is perpendicular to the line y=-3x+4 Click here to see answer by asuar010(324)

 Question 615436: Hello, I would appreciate some help with this question: A tree that is 38.5 feet tall casts a shadow that 9 feet 4 inches long. A utility pole beside the tree casts a shadow that is sixty-four inches long. Find the height of the utility pole. Thank you!! Click here to see answer by scott8148(6628)

 Question 615450: Hi I would appeciat help with this question: Find a fraction between 2/5 and 1/2. How do I get it? Thanks Click here to see answer by asuar010(324)

 Question 615445: Zeros or x-intercept of 2x+1 Click here to see answer by asuar010(324)

 Question 615441: Zeros or x-intercepts of 2x+1 Click here to see answer by asuar010(324)

 Question 615429: Hello, I would like some help with this question: The lenght of a rectangular garden is 5 feet longer than twice its width.If the perimeter of th garden is 130 feet, ind its dimensions. Thanks Click here to see answer by rfer(12670)

 Question 615447: A standardized test is designed so that the scores are normally distributed with a mean of 500 and a standard deviation of 100. Find the probability that a students score is between 400 and 600. Use normal approximation. Click here to see answer by dfrazzetto(277)

 Question 615433: The height of a circular pool is 6 ft. and the diameter is 16 ft. What is the volume of the pool? Click here to see answer by Alan3354(30993)

 Question 615941: 5x-10y=-40 Click here to see answer by JBarnum(2044)
 Question 615941: 5x-10y=-40 Click here to see answer by richwmiller(9143)

 Question 615947: What are the solution sets for 3x+7x-6=0 Click here to see answer by JBarnum(2044)

 Question 615995: which expression is equivalent to 3x(2x-4)? Click here to see answer by stanbon(57387)

 Question 615984: Substitution 3x+y=7 and 2x-y=-2 Click here to see answer by JBarnum(2044)

 Question 615996: To buy both a new car and a new house, Tina sought two loans totaling \$23,067. The simple interest rate on the first loan was 6.8%, while the simple interest rate on the second loan was 7.7%. At the end of the first year, Tina paid a combined interest payment of \$1765.70. What were the amounts of the two loans? Click here to see answer by stanbon(57387)

 Question 616028: Help.... Again!! The rectangle and the triangle have the same perimeter.Find the perimeter of each figure. The rectangle's measurements: the short side of the rectangle is x And the long side is x-7 The triangle's measurements: one side is x+9 the other is x-7 and the third side is x+2 Please please help me! I tried usig the distributive property like this: 4(2x-7)= 3(3x Click here to see answer by Earlsdon(6287)

 Question 616062: A copy machine makes 28 copies per minute. How many copies does it make in 4 minutes and 15 seconds? Click here to see answer by asuar010(324)

 Question 616173: Order of operations is totally confusing me Click here to see answer by stanbon(57387)

 Question 616216: Y=x Click here to see answer by JBarnum(2044)

 Question 616308: An apartment owner utilized straight line 30 year depreciation on her taxes for an apartment building she owned. If she purchased the apartment for \$150000 what is the tax value of the apartment after 5 years? Click here to see answer by solver91311(16897)

 Question 616493: How do I find the mass of a solution that has a density of 0.775g/mL and a volume of 50 mL Click here to see answer by nerdybill(6962)

 Question 616504: In order to get a better insurance rate a company has required its 83 employees to attend a safety seminar. During the break, an unknown number of employees sneak off, while those remaining are divided evenly into a 4 sub-group for role playing. if 17 employees are in each sub-group, how many employees snuck out? Click here to see answer by ewatrrr(10682)

 Question 616483: The volume (in ) of water in my (large) bathtub when I pull out the plug is given by (t is in minutes). This formula is only valid for the two minutes it takes my bath to drain. (a) Find the average rate the water leaves my tub between and (b) Find the average rate the water leaves my tub between and (c) What would you guess is the exact rate water leaves my tub at t=1 (d) In this bit h is a very small number. Find the average rate the water leaves my tub between and (simplify as much as possible) (e) What do you get if you put in in the answer to (d)? Click here to see answer by Alan3354(30993)

 Question 616675: 5X^3+40Y^6 factor completely Click here to see answer by stanbon(57387)

 Question 616702: Find the equation of a line that is perpendicular to the line y=1/9x+3 ad contains the point (-3,0) Click here to see answer by lwsshak3(6519)

 Question 616696: Use the substitution method to solve 2x+4y=12 x=y-6 Click here to see answer by Alan3354(30993)

 Question 616698: Use the substitution method to solve 3x-y=-10 4x+4y=40 Click here to see answer by richwmiller(9143)

 Question 616765: How does 2y-6>2-y-5 equal 3y>13? I know it is suppose to but I can't make it work out help please Click here to see answer by jim_thompson5910(28598)

 Question 616803: (x+3)/(x^2+10x+21) Click here to see answer by stanbon(57387)

 Question 616798: (x+11)/(x^2-121) Click here to see answer by richwmiller(9143)

 Question 616813: Solve for x by completing the square: fx^2+gx+h=0 Click here to see answer by stanbon(57387)

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