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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 623433: combine like terms : 2 2 12b -8b +6b . The 2 is and exponent over 12b and the other 2 is an exponent over 8b Click here to see answer by jim_thompson5910(28595)

 Question 623438: 8 person work crew completes a job in 18 hours. What is the fewest number of workers needed to do the same job in 7 hours? Click here to see answer by ankor@dixie-net.com(15652)

 Question 623439: Full tank with 3 one inch holes drains in 7.2 hours. Same size tank full has 7 one inch holes, how long will it take to drain? Click here to see answer by ankor@dixie-net.com(15652)

 Question 623461: On a certain project the only grades awarded were 75 and 100.If 85 students completed the project and the average of their grades was 85,how many earned 100? Click here to see answer by MathTherapy(1424)

 Question 623722: the first race was won by two hundred six ten-thousandths seconds.the second race was one by five thousand,three hundred-thousandths seconds.by how much closer was the first race won than the second race? Click here to see answer by Alan3354(30993)

 Question 623829: how does basic statistics work with english teachers? Click here to see answer by solver91311(16885)

 Question 624013: Suppose w varies directly as the square of z. If z decreases by 5%, findtte percentage change in w. Click here to see answer by ankor@dixie-net.com(15652)

 Question 624066: I need help for my son, please , he have 15 years. My name is Nelly Reyes and alive in Long Beach Ca. Thank you! And sorry i don't know english. Click here to see answer by rfer(12660)

 Question 624100: Hi! I haven't started the class yet but I still wanna know lots about it for a heads up. So, if you can lets start with (as I like to call it)"the basics". Okay my first one would be x^2-x-x-x=8-4 Click here to see answer by Alan3354(30993)

 Question 624127: how do you solve 2y over 3 - 14 over 15 = y over 5 Click here to see answer by unlockmath(1599)

 Question 624128: how do you solve x + 3 over 10 + 2 =7 over 5 Click here to see answer by ikdeep(226)

 Question 624079: The average of the six lights was 100 pounds. The average weight of the ten mediums was 140 pounds, and the average weight of the four heavies was 180 pounds. What is the overall average? Click here to see answer by math-vortex(472)

 Question 624304: jess got 56% in math first term, 89 % seconde term and 80% third term if the first two terms count for 20% each and third term for 60% percent what is her final mark??? Click here to see answer by ankor@dixie-net.com(15652)

 Question 624405: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. -x-3y=.20 5x+3y=40 Click here to see answer by lawdej(58)

 Question 624416: If 12 = r^y then what is the value of 12r ? Click here to see answer by Theo(3464)