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# Recent problems solved by 'Fombitz'

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 Equations/326851: What is the answer to 0.71-0.22= 1.03-0.62n Thank you1 solutions Answer 234062 by Fombitz(13828)   on 2010-07-29 14:01:17 (Show Source): You can put this solution on YOUR website! I'll leave the last step of division for you to do.
 Polynomials-and-rational-expressions/326855: can you show me an example on how to work out the product of 3 less than twice x and 2 more than the quantity 3 times x? 1 solutions Answer 234061 by Fombitz(13828)   on 2010-07-29 13:59:27 (Show Source): You can put this solution on YOUR website!"3 less than twice x"= "2 more than 3 times x"= THe product of those is
 Polynomials-and-rational-expressions/326856: According to equations, which order of operations do you do on each side of the equation? 1 solutions Answer 234060 by Fombitz(13828)   on 2010-07-29 13:57:44 (Show Source): You can put this solution on YOUR website!Independent of equation, the order of operations is Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction (PEMDAS). For more explanation and examples, search the web for PEMDAS.
 Angles/326806: measure of angle AOB=28, Measure of angle BOC=3x-2, measure of angle AOD=6x. What is x?1 solutions Answer 234059 by Fombitz(13828)   on 2010-07-29 13:55:51 (Show Source): You can put this solution on YOUR website!What is the relationship between AOB, BOC, AOD? Angles of a triangle? Angles in a rectangle? square? Please re-post.
 logarithm/326726: Log16base4+log1base2+log1/9base31 solutions Answer 234058 by Fombitz(13828)   on 2010-07-29 13:54:36 (Show Source):
 Miscellaneous_Word_Problems/326853: A total of 714 tickets were sold for the school play. There were 64 more student tickets sold than adult tickets. How many adult tickets were sold? 1 solutions Answer 234057 by Fombitz(13828)   on 2010-07-29 13:52:22 (Show Source): You can put this solution on YOUR website!Let be the number of adult tickets, student tickets. 1. 2. Substitute eq. 2 into eq. 1, . .
 expressions/326838: what is -5<= x <=-2 or 2<=x looks like on the number line is it [-5,-2] union [2,infinity)? I'm confused with the bracket and parentheses1 solutions Answer 234056 by Fombitz(13828)   on 2010-07-29 13:48:30 (Show Source): You can put this solution on YOUR website!Bracket means include that value in the region. Parenthesis means don't include that value in the region. means [,] the values between and including both and . . . . means [,) Value greater than 2 including 2. The parentheses is the normal convention since it's not really a value.
 test/326821: X - 3y = -3 X^2+6y=51 solutions Answer 234053 by Fombitz(13828)   on 2010-07-29 13:34:46 (Show Source): You can put this solution on YOUR website!You are solving for the intersection of a line with a parabola. . . . 1. 2. Use eq.1, Substitute into eq. 2 (multiplied by 3), Then solving for y, . . .
 Square-cubic-other-roots/326842: Is √a + √b = √a+b for all values of a and b?1 solutions Answer 234051 by Fombitz(13828)   on 2010-07-29 13:27:33 (Show Source): You can put this solution on YOUR website!Let's find out. Square both sides. Yes, it's true but only when or or both. So in general, other than those special cases, it does not hold.
 Triangles/326843: If the longer leg of a right triangle is 1 cm longer than the shorter leg and the hypotenuse is 5 cm then what are the lengths of the legs?1 solutions Answer 234050 by Fombitz(13828)   on 2010-07-29 13:24:45 (Show Source): You can put this solution on YOUR website!Let A and B be the legs. Since it's a right triangle, use the Pythagorean theorem, Only the positive solution makes sense for this problem, . .
 Quadratic_Equations/326850: if the roots of a quadratic equation are (-3/2) and (4/5), find one possible equation1 solutions Answer 234049 by Fombitz(13828)   on 2010-07-29 13:21:47 (Show Source): You can put this solution on YOUR website! or
 Equations/326653: given:f(x)=(x^2-6x)/(2x^2-11x-6) A. factor the numerator and the denominator B. write domain in set builder notation C. write the domain in interval notation D. Simplify the expression1 solutions Answer 234022 by Fombitz(13828)   on 2010-07-29 11:03:43 (Show Source): You can put this solution on YOUR website!DUPLICATE See Answer 233953
 Miscellaneous_Word_Problems/326802: Can someone please explain this to me? I don't understand what to do. Body Mass Index. Body mass index I can be used to determine whether an individual has a healthy weight for his or her height. An index between 18.5 and 25 indicates a healthy weight. Body mass index is given by the formula below, or model, where W is weight, in pounds, and H is height, in inches. I=704.5W H2 Margaret’s height is 63 in. Determine, in terms of an inequality, those weights W that will keep her body mass index below 25 1 solutions Answer 234020 by Fombitz(13828)   on 2010-07-29 11:01:35 (Show Source): You can put this solution on YOUR website!DUPLICATE See Answer 234019
 Miscellaneous_Word_Problems/326803: Can someone please explain this to me? Body Mass Index. Body mass index I can be used to determine whether an individual has a healthy weight for his or her height. An index between 18.5 and 25 indicates a healthy weight. Body mass index is given by the formula below, or model, where W is weight, in pounds, and H is height, in inches. I=704.5W H2 Margaret’s height is 63 in. Determine, in terms of an inequality, those weights W that will keep her body mass index below 251 solutions Answer 234019 by Fombitz(13828)   on 2010-07-29 11:00:36 (Show Source): You can put this solution on YOUR website! . . . Plug in H=63,
 Probability-and-statistics/326792: A spends 2 hours on patient medications, 5 hours on patient checks and 1 hour helping doctors. If the next day is spent exactly as the previous, what are the chances of completing patient checks or helping doctors?1 solutions Answer 234016 by Fombitz(13828)   on 2010-07-29 10:55:06 (Show Source): You can put this solution on YOUR website!P(checks)=5/8 P(helping)=1/8 P(checks and helping)=6/8=3/4
 Square-cubic-other-roots/326796: add 1/(√2)+1/(√3)1 solutions Answer 234014 by Fombitz(13828)   on 2010-07-29 10:49:53 (Show Source):
 Volume/326799: Find the volume of a half-sphere with radius 10 rounded to two decimal places. Thank you.1 solutions Answer 234013 by Fombitz(13828)   on 2010-07-29 10:48:24 (Show Source): You can put this solution on YOUR website!The volume of a sphere is , Half of that volume would be
 Circles/326793: If a wheel that has a radius of 1 foot rolls 5 complete revolutions, how far will it travel? I know the answer is 2.5 ft, but I don't know how to get the answer. Thank you.1 solutions Answer 234012 by Fombitz(13828)   on 2010-07-29 10:44:13 (Show Source): You can put this solution on YOUR website!For each revolution, the wheel moves a distance equal to the circumference of the circle. So for 5 revolutions, or approximately ft . . . Verify: Use a CD and a ruler. Mark a point on the CD, roll it one revolution until you reach the same point on the CD, then measure the distance traveled using the ruler. It should be about .
 Travel_Word_Problems/326760: A private airplane leaves Midway Airport and flies due east at a speed of 180 km/hr. two hours later, a jet leaves Midway and flies due east at a speed of 900 km/hr. how far from the airport will the jet overtake the private plane?1 solutions Answer 234008 by Fombitz(13828)   on 2010-07-29 10:37:31 (Show Source): You can put this solution on YOUR website!Rate*Time=Distance . . . In that two hours, the first jet moved 360 km. Find the distance for each plane when they meet . 1. 2. From eq. 2, Substitute into eq. 1, km
 Equations/326790: Write three rational numbers equal to 7/81 solutions Answer 234007 by Fombitz(13828)   on 2010-07-29 10:33:54 (Show Source): You can put this solution on YOUR website!Multiply the numerator and denominator by any non-zero number to get an answer. Now do it two more times.
 logarithm/326744: The number of dislocated eletric impulses per cubic inch in a transformer increases when lightning strikes by D=1900(2)^x where x is the time in milliseconds of the lightning strike.Find the number of dislocated impulses at x=0 and x=4 My answer is 1900 and 7600/.I need to know if this is wrong, please and what the right answer is.Thank you 1 solutions Answer 234005 by Fombitz(13828)   on 2010-07-29 10:32:31 (Show Source): You can put this solution on YOUR website!Your first answer is correct. However when . . . .
 test/326754: The sum of the digits of a three-digit number is 15. If the digits are reversed the resulting number is 1029. If the resulting number is subtracted from the original the difference is 693. What is the original number??1 solutions Answer 234004 by Fombitz(13828)   on 2010-07-29 10:29:59 (Show Source): You can put this solution on YOUR website!If the digits are reversed the resulting number is 1029. What resulting number? The sum of the digits is the same so what operation causes the resulting number. Please re-post.
 Square-cubic-other-roots/326779: 9 square root 50x^2 __divided by______ 3 square root 2x^41 solutions Answer 234003 by Fombitz(13828)   on 2010-07-29 10:27:48 (Show Source):
 Miscellaneous_Word_Problems/326635: Study Time and Test Grades. A mathematics instructor asserted that students' test grades are directly proportional to the amount of time spent studying. Brent studies 15 hr for a particular test and gets a score of85. At this rate, what score would he have received ifhe had studied 16 hr? 1 solutions Answer 234002 by Fombitz(13828)   on 2010-07-29 10:25:35 (Show Source): You can put this solution on YOUR website!Grade is directly proportional to time. . . . or
 Polynomials-and-rational-expressions/326631: simplify the rational expression 4w^2-49z^2/14z-4w1 solutions Answer 234001 by Fombitz(13828)   on 2010-07-29 10:22:45 (Show Source): You can put this solution on YOUR website!DUPLICATE See Answer 233893
 Equations/326791: Write as a numeral: Four hundred thirty-six millionths1 solutions Answer 234000 by Fombitz(13828)   on 2010-07-29 10:19:53 (Show Source):
 Linear_Algebra/326758: solve by the substatution method 5x+3y= -22 -7x+y=36 I am looking for the order pair1 solutions Answer 233999 by Fombitz(13828)   on 2010-07-29 10:19:08 (Show Source): You can put this solution on YOUR website!DUPLICATE See Answer 233998
 Linear_Algebra/326776: 5x+3y= -22 -7x+y=36 solve by substatution method1 solutions Answer 233998 by Fombitz(13828)   on 2010-07-29 10:18:35 (Show Source): You can put this solution on YOUR website!From eq. 2, Substitute into eq. 1, Now that you have x, use either equation to solve for y.
 Equations/326781: The price of a product after a 15% discount is \$255. What was the original price of the product? Why doesnt 255 x 1.15 = work for this answer??1 solutions Answer 233997 by Fombitz(13828)   on 2010-07-29 10:16:53 (Show Source): You can put this solution on YOUR website! The reason is because does not equal
 Equations/326783: find the additive and multiplicative inverse of the following: 12/231 solutions Answer 233996 by Fombitz(13828)   on 2010-07-29 10:15:11 (Show Source): You can put this solution on YOUR website! . . .
 Rational-functions/326787: For the 2 functions, f (x) and g(x), tables of values are shown below. What is the value of g(f (3)) ? x f(x) x g(x) –5 7 –2 3 –2 –5 1 –1 1 3 2 –3 3 2 3 –51 solutions Answer 233995 by Fombitz(13828)   on 2010-07-29 10:14:20 (Show Source):