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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 126732: a rectangle painting 60 cm by 90 cm is to e surrounded by a mat tha is w cm wide. find the total area of the painting and the mat. put your answer in standered form. Click here to see answer by checkley71(8403)

 Question 126840: Which of the following represents an odd number for any integer n? f.n+1 g.2n+1 h.3n i.3n+1 Click here to see answer by bucky(2189)

 Question 127182: Brittany saves the same amount of money each week. She had \$250 eight weeks ago. After withdrawing \$10, her current balance is \$400. How much was she saving weekly? Click here to see answer by ankor@dixie-net.com(15667)

 Question 127187: Brittany saves the same amount of money each week. She had \$250 eight weeks ago. After withdrawing \$10, her current balance is \$400. How much was she saving weekly? Click here to see answer by checkley71(8403)

 Question 127452: Write an equation of the line described. Through (-6,3), perpendicular to -2x+3y=3 Click here to see answer by checkley71(8403)

 Question 127454: Tell whether the lines are "parallel", "perpendicular", or "niether." 3x-9y=19 27x+12y=19 Click here to see answer by checkley71(8403)
 Question 127454: Tell whether the lines are "parallel", "perpendicular", or "niether." 3x-9y=19 27x+12y=19 Click here to see answer by MathLover1(6649)

 Question 129110: This is actually from my calculus class. I'm trying to work out the answer for a derivative using the "chain rule". The question is what is the derivative of the square root of x under the square root of x, all under a third square root of x. Click here to see answer by stanbon(57424)

 Question 129327: Lenox is planning to read 3 books in 5 weeks. The average number to read the same number books is 184. He wants to read the same number of pages everyday except on Friday, when he doesn't plan to read. How many pages should he read per day to finish the 3 books in 5 weeks? Click here to see answer by stanbon(57424)

 Question 129344: Lenox is planning to read 3 books in 5 weeks. The average number of pages in each of the 3 books is 184. He wants to read the same number of pages everyday except on Friday, when he doesn't plan to read. How many pages should he read per day to finish the 3 books in 5 weeks? Click here to see answer by checkley71(8403)

 Question 129271: Lenox is planning to read 3 books in 5 weeks. The average number to read the same number books is 184. He wants to read the same number of pages everyday except on Friday, when he doesn't plan to read. How many pages should he read per day to finish the 3 books in 5 weeks? Click here to see answer by checkley71(8403)

 Question 130858: In the month of July, one U.S. dollar was worth 43.52 Indian rupees. One U.S. dollar was also worth 108.75 Japanese yen. How many yen could you exchange for one rupee in July? A) 0.3954 yen B) 2.4989 yen C) 3.6582 yen D) 152.27 yen Click here to see answer by checkley71(8403)

 Question 131335: Use the properties of inverse functions to evaluate the expression cos [arcsin (5sqrt29/29)] I was told the answer is 2sqrt29/29 but I can't figure out how. Thanks! Click here to see answer by stanbon(57424)

 Question 131937: 840 meters in 15 seconds____ meters in 3 seconds Click here to see answer by ptaylor(2048)

 Question 128737: May you please help me solve this problem: "A bookshelf contains three types of books: novels, biographies, and mysteries. There are three more than twice as many novels as biographies. There is one less than three times as many mysteries as novels. If there are 25 novels, what is the fraction of the books are biographies?" I tried making a chart but I can't figure out how many books there are for each category. Click here to see answer by solver91311(16897)

 Question 132107: Mark is 10 years younger then Larry.Larry's age in 8 years will exceed twice Mark's age 3 years ago by 4 years.How old is each now? Click here to see answer by stanbon(57424)

 Question 132156: One of the angles was formed on a straight line measured 93 degrees.What was the measure of its supplment? I think the answer is 90 degrees. But if anyone can help.Thank You! Click here to see answer by TakeATuition.com(57)

 Question 132278: The sum of the digits of a 2-digit number is 7. If 27 is added to the number, the resulting number has the same digits in the reverse order. What is the number? Click here to see answer by josmiceli(9698)

 Question 132277: Machine A turns out 500 buttons in a certain number of minutes and Machine B turns out the same number of buttons in twice the time of Machine A. When both machines are used to produce 500 buttons, the time required is 40 minutes. Find the number of minutes each machine turns out 500 buttons. Click here to see answer by josmiceli(9698)

 Question 132276: A mason can build a wall iin 30 days. After working 24 days, he fell ill and his friend had to finish the wall. he worked for 5 days to finish the wall. How long would it take his friend to do the wall alone? Click here to see answer by josmiceli(9698)

 Question 132268: Tom,Dick,and harry weigh 50,85,and 120lbs.respectively and us a 12ft. plank for a teeterboard.Tom sits 5ft,dick sits 4ft,and harry sits 3ft from the fulcrum on the same sidethe fulcrum is at midpoint of the board.how fare would a 200-pound friend sit from the fulcrum to balance them? Click here to see answer by checkley71(8403)

 Question 133749: A cone-shaped paper cup is to hold 100 cubic cm of water. Find the height and the radius of the cup that can be made from the least amout of paper. Click here to see answer by ankor@dixie-net.com(15667)

 Question 133745: A rectangular bos id to be made from two types of material. The top and btom cost \$6.00 per square inch and the sides cost \$2.00 per square inch. If the box is to hol 80,000 cubic inches and the top and bottom are squares, find the dimensions and the minumum cost. Click here to see answer by ankor@dixie-net.com(15667)

 Question 134064: If your car gets 21.6 miles per gallon, how many gallons of gas do you need to travel 324 miles? Click here to see answer by vleith(2825)

 Question 134066: If your restaurant bill comes to \$25, how much will you spend if you leave a 20% tip and pay 8.3% sales tax? Click here to see answer by vleith(2825)

 Question 134192: Twice the square of an integer is 5 less than 7 times the integer. Click here to see answer by checkley71(8403)

 Question 134190: One number is six less than the other. The sum of the squares of these numbers is 20. Find the numbers. Click here to see answer by checkley71(8403)

 Question 134201: The Yellow Checker Cab Company in San Antonio charges \$1.70 for the first 1/6 of a mile and then \$1.80 per mile for each mile after that to determine the total cost of the trip, T. If M represents the total length of a trip, which equation best represents this relationship? F. T= 1.7 + 1.8M G. T= 1.7 + 1.8(M+1/6) H. T= 1.7 + 1.8(M-1/6) J. T= 1.8 + 1.7(M-1/6) Click here to see answer by checkley71(8403)

 Question 134205: Identify the independent variable il the general linear equation y= mx+b. F. y G. m H. x J. b My work: I think the answer is x because i think the dependent variable is y because it depends on x, which make x stand alone independently. Can you help me and tell me the answer so i can know if i was correct. Click here to see answer by jim_thompson5910(28598)

 Question 134202: The temperature in degrees Fahrenheit,F, is the sum of 9/5 the temperature in degrees Celsius, C, and the constant 32. Which equation best represents this relationship? A. F= 9/5C + 32 B. F= 9/5(C+32) C. F= 9/5 + C + 32 D. F= 9/5(C-32) Click here to see answer by edjones(7569)

 Question 134203: An athlete runs at a rate of 3 meters per second around a 400- meter track. Which equation best represents the distance covered if he has already run 2 laps? A. D=400 + 3s B. D=800 + 3s C. D=800 + 6s D. D=800 - 3s Click here to see answer by ptaylor(2048)