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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 291304: Factor each and find all zeros. One factor has been given. Problem: f(x)= x^4+3x^3-13x^2-15x Factor given: x-3 Click here to see answer by richwmiller(9144)

 Question 291868: Ellen wishes to mix candy worth \$1.69 per pound with candy worth \$3.91 per pound to for 30 pounds of a mixture worth \$2.73 per pound. How many pounds of the more expensive candy should she use? Round your answers to the nearest pound. Click here to see answer by richwmiller(9144)

 Question 292138: Simplify in a + bi form. 5/2-i i is a imaginary number and i wasnt sure how to work with that Click here to see answer by Earlsdon(6294)

 Question 292372: if the pattern continues what will be the 99th letter s,t,u,v,w,s,t,u,v,w,s,t,u,v,w, Click here to see answer by stanbon(57984)

 Question 292578: I would appreciate assistance with how this problem is completed. In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)=-3t^3+23t^2+8t. a) Rewrite the formula by factoring the right-hand side completely. b) Use the factored version of the formula to find N(3). Click here to see answer by nerdybill(7011)
 Question 292578: I would appreciate assistance with how this problem is completed. In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)=-3t^3+23t^2+8t. a) Rewrite the formula by factoring the right-hand side completely. b) Use the factored version of the formula to find N(3). Click here to see answer by Theo(3504)

 Question 292572: what is the solution to the equation x^2=-1 Click here to see answer by Fombitz(13828)

 Question 292706: Use the sine and cosine addition formulæ to show that, for suitable x and y, Click here to see answer by Edwin McCravy(8999)

 Question 293018: If an object is dropped from a height of 46 feet, the function h(t) = –16t^2 + 46 gives the height of the object after t seconds. Graph the function. Click here to see answer by Fombitz(13828)

 Question 293241: A depth finder shows that the water in a certain place is 620 feet deep. The difference between d, the actual depth of the water, and the reading is │d-620│ and must be less than or equal to 0.05d. Find the minimum and maximum values of d, to the nearest tenth of a foot. {Please show work} Click here to see answer by stanbon(57984)

 Question 293235: If I got a test with 40 questions... missed 6... whats my score in percentage out of 100? Click here to see answer by checkley77(12569)

 Question 293270: number of tickets sold for an upcoming performance of Handel's Messiah is given by N(x)=-0.4x^2+12+14, where x is the number of days since the first concert was announced.when will daily sales peak and how many tickets will be sold? Click here to see answer by nerdybill(7011)

 Question 293275: which ordered pair is a solution to the system of equation y=x and y= x square-2 Click here to see answer by stanbon(57984)

 Question 91043: Jamal is fencing a rectangular field that neasures 25ft by 21ft. How much fencing should he buy? 92ft. Click here to see answer by whit4141983(1)

 Question 293899: 3. Aimee Eslinger is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 7 meters, the new total area of the garden will be 169 square meters. Find the length of each side of the original garden. Write the answer as a polynomial in descending powers of x. Click here to see answer by ankor@dixie-net.com(15747)

 Question 294260: For a wedding, Shereda bought several dozen roses and several dozen carnations. The roses cost \$15 per dozen, and the carnations cost \$8 per dozen. Shereda bought a total of 17 dozen flowers and paid a total of \$192. How many roses did she buy? Click here to see answer by blwinbbbles(106)

 Question 294351: Use the formula: s=n^2+n all over 2 1. where S is the sum of the first n natural numbers. How many consecutive natural numbers beginning with 1 will give a sum of 120 ? 2.where S is the sum of the first n natural numbers. How many consecutive natural numbers beginning with 1 will give a sum of 253? Click here to see answer by stanbon(57984)

 Question 295674: How do I solve the following problem? 2y-13-3y=-15-2y Thank you Kaytee Colley Click here to see answer by Alan3354(31538)

 Question 295693: Perform the indicated operation. Write the answer in scientific notation. (4.2 × 10-7)(1.8 × 10-5) Click here to see answer by nyc_function(2733)

 Question 295784: Is the Fourmula for pathogram therom is A squared + b squared = C squared Click here to see answer by JBarnum(2044)
 Question 295784: Is the Fourmula for pathogram therom is A squared + b squared = C squared Click here to see answer by richwmiller(9144)

 Question 295872: Alita, Ben, and Cesar needed to calculate the volume of a grain silo. Alita thought she should use cubic centimeters, Ben chose cubic miles, and Cesar chose cubic feet. Who do you think made the best choice? Click here to see answer by stanbon(57984)

 Question 295955: Hi, what is the log of log7 50= Sorry, I am not sure how to make the 7 a subscript. I understand I am trying to find the exponent of 7 that will produce 50. 7 squared is 49, so what do I do from there? Thanking You in Advance, Jacinta Click here to see answer by Theo(3504)

 Question 296834: What is x to the second power+3y to the second power+2xy for x=5 and y=1 Click here to see answer by blwinbbbles(106)

 Question 296981: The height in feet for a ball thrown upward at 48 feet per second is given by s(t)=-16t^(2)+48t, where t is the time in seconds after the ball is tossed. What is the maximum height that the ball will reach? Click here to see answer by richwmiller(9144)

 Question 297229: hi One leg of a right triangle is 5 cm long. The hypotenuse is 13 cm long. What is the length of the second leg of the triangle? Round to the nearest tenth. Click here to see answer by Alan3354(31538)

 Question 297347: 21.indicate which of the following sets of lines are parallel,perpendicular,or neither. y=2x-5 and y=2x+5.Show work and explain why you chose the answer you did.(I am really confused with this question and have no idea what they are talking about????)Thanks =) Click here to see answer by jim_thompson5910(28717)
 Question 297347: 21.indicate which of the following sets of lines are parallel,perpendicular,or neither. y=2x-5 and y=2x+5.Show work and explain why you chose the answer you did.(I am really confused with this question and have no idea what they are talking about????)Thanks =) Click here to see answer by Fombitz(13828)

 Question 297345: Chris put \$1,500 in a savings account at an annual interest rate of 5%. If Chris does not deposit or withdraw any money, what is the amount of interst Chris will earn the first year her money is in the savings account? Click here to see answer by checkley77(12569)

 Question 297381: Indicate which of the following sets of lines are parallel,perpendicular,or neither.Show your work and explain why you chose the answer you did.21. (a) y=2x-5,y=2x+5 (b) 3x+y=5,-x+3y=6 (c)3x+y=5,x+y=3 I am really confused and don't even know how to work this out(I've looked in the book) PLEASE help....THANKS VERY MUCH! =) p.s. They only give a line this big to explain why I chose the answer I did.________________________ Click here to see answer by richwmiller(9144)

 Question 297603: Could any one pls help to solve this -How do you solve an equation like x3 + 2x2 – 88x + 200 = 0 Click here to see answer by Fombitz(13828)

 Question 298121: if the sum of a number and six is doubled the result is nine less than the number find the number Click here to see answer by solver91311(17077)

 Question 298516: a high speed train travels with an average speed of 227 km/h. The train travels for 2 hours . HOW far does the train travel ? Click here to see answer by checkley77(12569)

 Question 298411: Can someone please help me solve the following two equations. I can not seem to solve them. I have tried and tried and keep coming up with a differet answer. Thanks for your help 1.) x/x-1 - 3/x = 1/2 2.) 1/x + 1/6 = 1/4 Click here to see answer by ankor@dixie-net.com(15747)