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Recent problems solved by 'Fombitz'

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absolute-value/355888: If the absolute value of x-a is equal to the absolute value of x-b then what is x equal to? I think x is equal to -a+b over 2, I'm not sure though & need help. 1 solutions Answer 254106 by Fombitz(13828)   on 2010-10-13 16:38:52 (Show Source): You can put this solution on YOUR website! and and and and From the first expression, there is no solution. From the second expression, is the intersection point. . . . As an example, . . Should have an intersection point (solution) at Then . . .

Numbers_Word_Problems/355865: the product of 8 and the sum of a number and 3 is equal to 40. Find the number 1 solutions Answer 254095 by Fombitz(13828)   on 2010-10-13 15:44:04 (Show Source): You can put this solution on YOUR website! Let N be the number,

Complex_Numbers/355875: show that the integration from ( 0 to infinity ) for ( cos 3x / ( x^2+1)^2 )= 2pi/e^3 please .. help .. with steps of solution 1 solutions Answer 254094 by Fombitz(13828)   on 2010-10-13 15:42:57 (Show Source): You can put this solution on YOUR website! DUPLICATE See Answer 253988

Quadratic-relations-and-conic-sections/355606: Graph each circle. Label the center and radius length. (x-3)^2+y^2=36 1 solutions Answer 254093 by Fombitz(13828)   on 2010-10-13 15:41:26 (Show Source): You can put this solution on YOUR website! The circle is centered at (,) with a radius of 6. . . .

Equations/355794: 5/x+3 + 11/x-6 = 9/x^2-3x-18 1 solutions Answer 254091 by Fombitz(13828)   on 2010-10-13 15:36:19 (Show Source): You can put this solution on YOUR website! Use the common denominator, . . . . . . . . . One solution:

Equations/355795: 1-5/x - 24/x^2=0 1 solutions Answer 254089 by Fombitz(13828)   on 2010-10-13 15:30:50 (Show Source): You can put this solution on YOUR website! Use the common denominator, . Two solutions: . . .

Linear_Algebra/355841: what the meaning of rings? 1 solutions Answer 254088 by Fombitz(13828)   on 2010-10-13 15:27:31 (Show Source): You can put this solution on YOUR website! Onion? Engagement? Saturn's? or do you mean in an algebraic sense. . . . Here's a concise write-up with links if you're interested. http://mathworld.wolfram.com/Ring.html

test/355813: 1) Write y=5/3x-6/8 in standard form. 2) Write y=0.40x+0.39 in standard form. 1 solutions Answer 254087 by Fombitz(13828)   on 2010-10-13 15:23:47 (Show Source): You can put this solution on YOUR website! . . .

Equations/355869: >multiply (-3*4) + (4*-2) + (-3*3) > > so it should be -12 + -8 + -9= -29 > > final answer is now -29 my final answer is 5 1 solutions Answer 254086 by Fombitz(13828)   on 2010-10-13 15:20:17 (Show Source): You can put this solution on YOUR website! Yes, that's correct. Well done.

Numbers_Word_Problems/355870: Can you help me with this equation on my math homework? I'm in Algebra 8th grade and this is my problem: 1/8(B-9)=B+9 TY Victoria 1 solutions Answer 254084 by Fombitz(13828)   on 2010-10-13 15:19:29 (Show Source): You can put this solution on YOUR website! I assume you're solving for . Multiply both sides by 8. Now take it from there and solve for .

test/355862: Please help me solve this equation: Evaluate the following integrals using trigonometric substitutions. a) b) 1 solutions Answer 254082 by Fombitz(13828)   on 2010-10-13 15:13:19 (Show Source): You can put this solution on YOUR website! Use a substitution. Let , . . . Take it from there and solve for the integral in u, then back substitute to x. . . . Complete the square in the denominator. Substitute, let , Substitute again, let , Take it from here and get the solution in v, back substitute for u, and then back substitute for x. . . .

Linear-equations/355861: how do I graph Slope -3; and y-intercept (0,2)?? I'm having troubles when the slope is not a fraction! 1 solutions Answer 254078 by Fombitz(13828)   on 2010-10-13 14:57:57 (Show Source): You can put this solution on YOUR website! is a fraction, the denominator is just . Maybe thinking about it that way will help you. . . So start with the y-intercept (,). The slope is change in divided by change in . So if I move unit in , I should move units in . (,)+()=(,)=(,) So then (,) is another point on the line. Plot those two points and connect them with the line. . . .

Exponents/355793: A to the 10th power divided by A to the N power 1 solutions Answer 254073 by Fombitz(13828)   on 2010-10-13 14:53:58 (Show Source): You can put this solution on YOUR website!

Linear-equations/355860: What is a equation in slope intercept form of the line that has the same slope as 3x-y+4=0 and contains the point (2,-3)? 1 solutions Answer 254072 by Fombitz(13828)   on 2010-10-13 14:52:53 (Show Source): You can put this solution on YOUR website! It would have the same x-y relationship. so use the point to determine the right hand side.

Linear-equations/355848: Reduce to lowest terms. -2x-8/x^2+2x-8 1 solutions Answer 254065 by Fombitz(13828)   on 2010-10-13 14:28:40 (Show Source): You can put this solution on YOUR website!

Graphs/355847: PLEASE CAN YOU EXPLAIN THE STEPS WRITE AN EQUATION FOR THE VERTICAL LINE THROUGH THE POINT (5,7) THANK YOU 1 solutions Answer 254064 by Fombitz(13828)   on 2010-10-13 14:27:07 (Show Source): You can put this solution on YOUR website! Vertical lines have the form, . Use the given point's x-coordinate to solve for

Numbers_Word_Problems/355735: If you double an odd number, is the result another odd number? 1 solutions Answer 254017 by Fombitz(13828)   on 2010-10-13 09:58:42 (Show Source): You can put this solution on YOUR website! No, doubling a number is adding it to itself. Adding two odd numbers gives you an even number. Odd numbers are even numbers plus 1. Odd+Odd=(Even+1)+(Even+1)=Even+Even+2 An even number plus an even number is an even number.

Reduction-of-unit-multipliers/355736: I have a homework question that I don't really understand..It says 'Use one unit multiplier to convert 16 miles to feet.' There is 5,280 feet in a mile but I don't understand anything else. 1 solutions Answer 254015 by Fombitz(13828)   on 2010-10-13 09:56:27 (Show Source): You can put this solution on YOUR website! The unit multiplier would be (5280 ft/1 mile). 16 miles*(5280 ft/1 mile)=84480 ft

Graphs/355701: PLEASE EXPLAIN WRITE AN EQUATION FOR THE LINE THROUGH THE POINT(1,1) AND PERPENDICULAR TO THE LINE 2X+Y=9 THANK YOU 1 solutions Answer 254014 by Fombitz(13828)   on 2010-10-13 09:55:21 (Show Source): You can put this solution on YOUR website! Convert the line to slope-intercept form, . Perpendicular lines have slopes that are negative reciprocals. . . . Use the point to determine . . . . .

Linear-equations/355731: please explain steps solve the linear equation 5x/2+2=12 thank you 1 solutions Answer 254013 by Fombitz(13828)   on 2010-10-13 09:51:22 (Show Source): You can put this solution on YOUR website! Multiply both sides by 2. Now solve for .

Probability-and-statistics/355635: What s the answer to the following question: Estimate the proportion of observations falling within 1.2 standard deviations from the mean on a normal distribution. 1 solutions Answer 254012 by Fombitz(13828)   on 2010-10-13 09:50:34 (Show Source): You can put this solution on YOUR website! In other words what is the area of the distribution curve between (,). Find . That's the area of the region up to . The area from there to would then be, Twice that area would give us the area from (,).

Linear-equations/355724: http://img510.imageshack.us/img510/8531/76324556.jpg Simplify the expression r−3s5 t 2 r2st−2 . A. s4t4 r5 C. r−1s4 B. s4 r6t2 D. r−5s4 1 solutions Answer 254010 by Fombitz(13828)   on 2010-10-13 09:44:59 (Show Source): You can put this solution on YOUR website! Use parentheses and "/" to separate numerator and denominator in a fraction and the ^ symbol for exponents. (r^( -3)s^5t^2)/(r^2st^( -2))= . . .

Linear-equations/355730: http://img251.imageshack.us/img251/455/40178171.jpg Find the square root of the fraction 64/100. A. 4 5 C. √8 √ 10 B. √4 √5 D. 4√2 10 1 solutions Answer 254008 by Fombitz(13828)   on 2010-10-13 09:40:59 (Show Source): You can put this solution on YOUR website!

Mixture_Word_Problems/355465: a solution containing 28% fungicide is to be mixed with a solution containing 40% fungicide to make 300L of a solution containing 36% fungicide. how much of each solution should be used? 1 solutions Answer 254007 by Fombitz(13828)   on 2010-10-13 09:39:54 (Show Source): You can put this solution on YOUR website! Let A be the amount of 28% fungicide and let B be the amount of 40% fungicide. . . . Volume: 1. . . . Concentration: 2. Multiply eq. 1 by (-10) and add to eq. 2 to eliminate B and solve for A. liters Then from eq. 1, liters

Permutations/355545: A sample of eight math SAT scores is given below: 640 \quad 550 \quad 710 \quad 630 \quad 680 \quad 590 \quad 590 \quad 520 Find the first and third quartiles and the interquartile range for this sample. First Quartile ; Third Quartile ;Interquartile Range 1 solutions Answer 254006 by Fombitz(13828)   on 2010-10-13 09:36:14 (Show Source): You can put this solution on YOUR website! Order them. In quartiles, they would be 520 550 --- 590 590 --- 630 640 --- 680 710 Now you can answer your questions.

Graphs/355571: Look at Graph C below. Two linear equations are shown in the graph. What are the coordinates of the point where the two lines intersect? http://img222.imageshack.us/img222/7888/46524248.jpg 1 solutions Answer 254005 by Fombitz(13828)   on 2010-10-13 09:33:33 (Show Source): You can put this solution on YOUR website! Starting at point (,), move over units in x (horizontally) and up units in y (vertically). (,)+(,)=(,)=(,)

Percentage-and-ratio-word-problems/355725: In a workshop there are 4 kinds of beds, 3 kinds of closets, 2 kinds of shelves and 7 kinds of chairs. In how many ways can a person decorate his room if he wants to buy in the workshop one shelf, one bed and one of the following: a chair or a closet? 1 solutions Answer 254002 by Fombitz(13828)   on 2010-10-13 09:30:41 (Show Source): You can put this solution on YOUR website! Shelf, Bed, Chair: ways Shelf, Bed, Closet: ways

Equations/355722: please explain the steps sove the equation /2x+1/=2.8 the lines are suppose to be strainght up and down lines i just don't have those on my keyboard thank you 1 solutions Answer 254001 by Fombitz(13828)   on 2010-10-13 09:27:58 (Show Source): You can put this solution on YOUR website! This is an absolute value problem and is actually two problems in one. and and and and

Graphs/355723: What is the slope of the line given by the equation below? If necessary, use the slash mark ( / ) for a fraction bar. y =6/5x 1 solutions Answer 254000 by Fombitz(13828)   on 2010-10-13 09:25:42 (Show Source): You can put this solution on YOUR website! The line is in slope intercept form, where is the slope. Comparing,

Linear-equations/355721: Write 34392.55 in scientific notation. A. 3.439255 × 104 C. 3.439255 × 103 B. 3.439255 × 10−4 D. 3.439255 × 10−3 1 solutions Answer 253999 by Fombitz(13828)   on 2010-10-13 09:21:37 (Show Source): You can put this solution on YOUR website! You move the decimal point 4 places to the left.

Complex_Numbers/355691: How do you simplify (3x^2-8x-2)-(11x^2+5x+4) 1 solutions Answer 253996 by Fombitz(13828)   on 2010-10-13 09:20:52 (Show Source): You can put this solution on YOUR website!