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Tutors Answer Your Questions about real-numbers (FREE)
Question 67890: Hi, I need help solving this problem. I have a big! problem with mixture problems : and I have to take chemistry soon. Please help!! Thanks
Question:
A radiator contains 6L of a 25% antifreeze solution. How much should be drained and replaced with pure antifreeze to produce a 50% antifreeze solution?
Click here to see answer by stanbon(57290) |
Question 68726: I have a math problem that I am trying to solve.
16/ (-2) x (-4) this is the top row, it is division of real numbers
2 to the third power + 4 this is the bottom line
I did 16 divided by 2=8 x 4=32 as my top line then I got 8+4 as my bottom line
but that is not even. I also tried 16 divided by 8=2 as my top line and got 12 as my bottom line.
What am I doing wrong?
Click here to see answer by ptaylor(2048)  |
Question 68724: I am having trouble figuring out the temperature range in this problem. If the lowest temperature recorded was -54 degrees fahrenheit and the highest recorded was 119 degrees fahrenheit, what is the temperature range?
Click here to see answer by tutorcecilia(2152)  |
Question 71181: fine two fractions in lowest terms with unequal denominators whose diffrent is 2/13
Use your creativity on this one. Choose a fraction to start with.
1/3-1/x=2/13
-1/x=2/13-1/3
x=39/7
1/3-7/39=2/13
This is just one of many.
Click here to see answer by galactus(183)  |
Question 73965: bailey wants to make a scale drawing of his house.his house is 32 feet long. in the scale drawing,2inches will repersent 10 feet. which is the best estimate for the length of bailey's house in the scale drawing.
Click here to see answer by checkley75(3666) |
Question 74661: looking at a problem like this {-8,-square root 5,-.6,0,3/4,square root 3, pie,5,13/2,17,40/2} for a person that is just learning how can i tell what is rational, irrational, whole, real, integers,and natural numbers please i am having some comprehension problem with this. i just can not seem to understand it please help!
Click here to see answer by jim_thompson5910(28545) |
Question 77334: Q.1) If a, b, c, are real numbers such that a2+2b=6, b2+4c= -7 and c2+6a= -13, then the value of a2+b2+c2 is equal to :
(A) 14 (B) 21 (C) 28 (D) 35
Q.2) If x, y and z are positive integers with xy= 24, xz= 48 and yz=72, then x+y+z is:
(A) 18 (B) 19 (C) 20 (D) 22
Click here to see answer by Edwin McCravy(8901)  |
Question 78438: In the "firrst quater of the year" means Januryary,Febrruary, and March. The "second quater" is April,May,and June.
Achme Reaaltors sold 23 houses during the first quater of the year and again duyring the last quater. Sales during the middle quater was not quite as good, so that tht the annual sales was 57 houses. b &B realty compaly sold 50 homes during the second quater and hald that many during the forth quater, for a total annual sales of 75 homes. Arco sold as many houes during the thurd quater as B&B sold during the entire year, but during the other three quaters they did no better then b&b during the first quater. Toget the tgree cinoabues sikd 79 giyses during the third quater.
How many houses did the three companies sell during the second quater?
Click here to see answer by stanbon(57290) |
Question 79470: the problem is: 2y^2=14y. I need to solve this by factoring. The first thing I think I would do is factor out the greatest common factor which would be 2. I get to the point of 2(y^2-7y) but I am stuck on what y equals.
thanks,
Michael
Click here to see answer by Nate(3500) |
Question 80448: The problem is: "Condensee the three rules for multiplying signed numbers into
two rules--one for multiplying numbers with the same sign and
one for multiplying numbers with different signs".
I thought it might be: A neagative plus a negative equals a positive.
I was wondering if this is right.
Click here to see answer by tutorcecilia(2152)  |
Question 80555: A professor started a project with a group of students, 60% of whom were boyus. Due to some unavoidavle reason, six girls couldn't turn up, so the proessor had to make some changes in the gorup. He admitted 6 boys. In doing so, the percentage of boyus in the project increased to 75%. The the number of boys and girls in involved in the project initially.
Click here to see answer by ankor@dixie-net.com(15646)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790
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