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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 174064: A student wants to know how many integers between 1 and 1000 are a multiple of 3 or a multiple of 5. She wonders if it is correct to find the number of those integers that are multiples of 3 and add the number of those that are multiples of 5. How do you respond? Click here to see answer by Edwin McCravy(8908)

 Question 174237: Graph the line. y=5x-4 I cannot get this right for the life of me. I came up with points of (0,4) (-2,-9) (1,1) Then Igraphed it and it looks whopperjawed and I can't figure it out. Please help me. TY in advance. Judy Click here to see answer by Mathtut(3670)

 Question 174297: A student says that taking one-half of a number is the same as dividing the number by one-half. How do you respond? Click here to see answer by jim_thompson5910(28593)

 Question 174294: Each year, my student’s Mike’s kazoo collection appreciates (goes up in value) 10%. Mike says that after 10 years, the value will double. How do you respond? Click here to see answer by stanbon(57323)

 Question 174296: A student says that repeating decimals can not be multiplied together. How do you respond? Click here to see answer by stanbon(57323)

 Question 174298: A student says that a + b = a because the variable b cancels. How do you respond? c + b c Click here to see answer by stanbon(57323)

 Question 174295: A parent argues that fractions should no longer be taught once students learn how to work with decimals. How do you respond? Click here to see answer by stanbon(57323)

 Question 174065: Your class has just completed a unit on divisibility rules. One of the students ask why divisibility by numbers other than 3 and 9 can not be tested by dividing the sum of the digits by the tested number. How do you respond? Click here to see answer by Mathtut(3670)

 Question 173364: Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different kinds of cones can they make? They may have only singles, doubles, and triples. Create one or more number sentences that would support your conclusions. Click here to see answer by Edwin McCravy(8908)

 Question 174823: f(x)=2x+5,g(x)=x^2-10 and h(x)=3x-8, then what is g(f(5)) and f(g(-n)) Click here to see answer by actuary(112)

 Question 175116: i have a problem with a review sheet that iam doing for my mid term here is the question multi-step problem consider some rectangles with a perimeter of 24 inches copy and complete the table the table has columns and there is 4 colums across and 7 down and from left to right it says width(in.), perimeter(in.), length(in.), and area(in.2) Click here to see answer by stanbon(57323)

 Question 175149: How can I solve the following? Quadrilateral ABCD has vertex coordinates A(2,4), B(6,1), C(2,-2) and D(-2,1). what type of quadrilateral is ABCD? Click here to see answer by actuary(112)

 Question 175234: A Student claims that the equations sq -x =3 has no solution since the square root of a negative number does not exist. Why is this argument wrong? Click here to see answer by gonzo(654)

 Question 175235: When professor Sum was asked be Mr. Little how many students were in his classes, he answered, "All of them study languages, physics, or not at all. One-half of them study languages only, one-fourth of them study French, one-seventh of them study Physics only, and 20 do not study at all." How many students does Professor Sam have? Click here to see answer by gonzo(654)

 Question 175280: June, an owner of a coffee stand, marked down the price of a latte between 7am and 8 am from \$2/cup. If she grossed \$98.69 from the latte sale and we know that she never sells a latte for less than a dollar, how many lattes did she sell between 7am and 8 am. Explain your reasoning. Click here to see answer by ankor@dixie-net.com(15649)

 Question 175759: The width of a pool table is x feet, and the length is 4 feet longer than the width. Find polynomials A(x) and P(x) that represent the area and perimeter of the pool table. Find A(4) and P(4). Click here to see answer by ankor@dixie-net.com(15649)

 Question 175755: Carol has a box with a length, width and height of 12 inches. She needs a box that is 3 inches longer, not as high, yet still has almost exactly the same volume. a. What is the volume of the box she has now? b. What are the dimensions of the new box? c. What is the volume of the new box? Please explain. Thank you. Click here to see answer by ankor@dixie-net.com(15649)

 Question 175744: Please help. Carol has a box with a length, width, and height of 12 inches. She needs a box that is 3 inches longer, not as high, yet still has almost exactly the same volume. a. What is the volume of the box she has now? b. What are the dimensions of the new box? c. What is the volume of the new box? Thank You. Please explain your answer. Click here to see answer by Fombitz(13828)

 Question 175951: Factorise: x^2 - 2x + 4xy + 4(y^2) - 4y - 3 Click here to see answer by vleith(2825)

 Question 176320: 6) A student says that 3 divided by 0 is 0. How do you respond? Click here to see answer by jim_thompson5910(28593)

 Question 176324: 10) A student says that the square root of 25 equal –5. How do you respond? Click here to see answer by jim_thompson5910(28593)

 Question 176323: 9) A student claims that a – b – c is the same as a – ( b – c ). How do you respond? Click here to see answer by jim_thompson5910(28593)
 Question 176323: 9) A student claims that a – b – c is the same as a – ( b – c ). How do you respond? Click here to see answer by solver91311(16877)

 Question 176318: 4) A student claims “If d does not divide a and d does not divide b, then d does not divide (a+b). How do you respond? Hint look in chapter 4. Click here to see answer by jim_thompson5910(28593)
 Question 176318: 4) A student claims “If d does not divide a and d does not divide b, then d does not divide (a+b). How do you respond? Hint look in chapter 4. Click here to see answer by solver91311(16877)

 Question 176317: 3) A student claims that two terms are enough to determine any sequence. For example 3,6, … means the sequence would be 3, 6, 9, 27, 12, 15, … How do you respond? Click here to see answer by jim_thompson5910(28593)

 Question 176316: 2.) A student wants to know how many integers between 1 and 1000 are a multiple of 3 or a multiple of 5. She wonders if it is correct to find the number of those integers that are multiples of 3 and add the number of those that are multiples of 5. How do you respond? Click here to see answer by solver91311(16877)

 Question 176315: 1) A student says that 13 * 4 + 6 is the same as 13 * 10. How do you respond? Click here to see answer by Mathtut(3670)
 Question 176315: 1) A student says that 13 * 4 + 6 is the same as 13 * 10. How do you respond? Click here to see answer by MathTherapy(1423)

 Question 176319: 5) A bookstore ordered 11 gross, 5 dozen, and 3 pencils. Explain to your student how to write this in base twelve and in base ten. Click here to see answer by solver91311(16877)

 Question 176313: Deneen bought 120 floor tiles and 3 cans of paint for \$195. If a can of paint cost \$3.50 more than each tile, find the cost of two cans of paint. Click here to see answer by MathTherapy(1423)

 Question 176379: 8) A student says that a finite set of numbers is any set that has a smallest element. How do you respond? Click here to see answer by jubacat(1)

 Question 176322: 8) A student says that a finite set of numbers is any set that has a smallest element. How do you respond? Click here to see answer by Fombitz(13828)

 Question 176321: 7) A student says that A = {1, {1}} has only one element. How do you respond? Click here to see answer by Fombitz(13828)

 Question 176378: 7) A student says that A = {1, {1}} has only one element. How do you respond? Click here to see answer by solver91311(16877)

 Question 176390: Suppose another year of college will increase your lifetime earnings by about \$30,000. The costs of tuition and book costs add up to only \$8,000 for an additional year. Comment on the following statement: “Because the benefit of \$30,000 exceeds the \$8,000 cost, you should complete another year of college.” In addition to your comment, What economic principle are you using as a reference in responding to this question? Click here to see answer by EMStelley(187)

 Question 177084: If P=2y-6xy-3x and Q=4-5y, find the value of 2P-3Q Click here to see answer by user_dude2008(1861)
 Question 177084: If P=2y-6xy-3x and Q=4-5y, find the value of 2P-3Q Click here to see answer by MathTherapy(1423)

 Question 177426: A train leaves New York for Boston, 200 miles away, at 3:00 p.m. and averages 75 mph. Another train leaves Boston for New York on an adjacent set of tracks at 5:00 p.m. and averages 45 mph. At what time will the trains meet? Click here to see answer by MathTherapy(1423)

 Question 178021: Calculate to the nearest hundredth 1/20 +1/30 = Click here to see answer by Mathtut(3670)

 Question 178034: if they do not at all show the points on the graph just the line how can you find out the slope of the line without using its intercepts Click here to see answer by Mathtut(3670)

 Question 178076: A consumer electronics company sells 6.7 million MP3 players per month at a price of \$100 apiece; when the price is lowered to \$80, the company sells 10.2 million players per month. How many MP3 players can the company expect to sell per month at a price of \$75? Click here to see answer by josmiceli(9671)

 Question 178178: cansomeone please help me with these graphing problems solve and graph -3(x – 2) – (1/2x + 2) > 1/4x + 3 - 16 Solve for y: 2y – 3 + y – 3 = y + 5 - 1 9 2 6 Click here to see answer by IVETTEMARTINEZ13@YAHOO.COM(1)