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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 567526: Identify the sampling technique used to obtain this sample: 100 people place their names into a hat; the hat is shaken to thoroughly mix the names, and a blindfolded person selects five names. Click here to see answer by stanbon(57219)

 Question 567586: The line l joining the points M(3,4) and N(8,14) cuts the x-axis at A and the y-axis at B. a. Find the general equation of the line l. b. Find the coordinate of Point A. c. Find the coordinate of Point B. Click here to see answer by mananth(12270)

 Question 567606: A merchant has coffee worth \$4 a pound that she wishes to mix with 80 pounds of coffee worth \$9 a pound to get a mixture that can be sold for \$5 a pound. How many pounds of the \$4 coffee should be used? My answer = 320 lbs Thanks for your help. Click here to see answer by nerdybill(6948)

 Question 567604: There were 610 people at a play. The admission price was \$3.00 for adults and \$1.00 for children. The admission receipts were \$1250. How many adults and children attended? I got the answer of 290 adults/320 children. Is this correct? Thanks! Click here to see answer by nerdybill(6948)

 Question 567622: Suppose y = mx + b is a math model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m = 2.8 and b = -2.6, find y when x is 30 min. My answer = 22.72 min Thanks again! Click here to see answer by Alan3354(30959)

 Question 567712: why could it be misleding for the owner of a salon to boast to her friends that the mean salary at the salon is \$76,400? Why could the boast be msleading? Click here to see answer by richard1234(5390)

 Question 567825: "A line passing through (a,8) and (-1,7) is perpendicular to a line through (2,-10) and (4,a). What is the value of a?" I need to show my work, but i do not know how to work it out. Click here to see answer by solver91311(16868)

 Question 567853: What does a coefficient of correlation of 0.70 infer? Click here to see answer by jim_thompson5910(28476)

 Question 568154: -(t-82) what is the equivalent expression without parentheses look like I Click here to see answer by jim_thompson5910(28476)

 Question 567419: If x=-2, then 3x (to the 2nd power)-5x-6=? Click here to see answer by jim_thompson5910(28476)

 Question 568246: I have an upcoming test on Algebra, What is the differences and simulatities of an algebra expression and an algebra equation? Click here to see answer by richard1234(5390)

 Question 568474: A number decreased by the difference between six and the product of the number and four. The sum of eight more than a number and one-third of the number Click here to see answer by AnlytcPhil(1276)

 Question 568508: I need help on solving systems using substitutions. Y=X+4 Y=3X Click here to see answer by jim_thompson5910(28476)