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Quadratic_Equations/341595: I need help solving x^2+20x=6 I know the formula should be x^2+bx but I need help understanding how to complete the square. 1 solutions Answer 244626 by Fombitz(13828)   on 2010-09-11 08:46:08 (Show Source): You can put this solution on YOUR website! To complete the square, take of the x-coefficient(), square it, and add it to both sides.

Linear-equations/341585: write equations for the vertical and horizontal lines passing through the point (-5,) 1 solutions Answer 244625 by Fombitz(13828)   on 2010-09-11 08:43:27 (Show Source): You can put this solution on YOUR website! Your ordered pair is incomplete. The vertical line would be . But without the y-coordinate, it can't be determined. If the ordered pair was (,), then the horizontal line would be

Geometry_Word_Problems/341581: the area of a rectangle is 991 cm2 . if 991 is a prime number, what are the whole number dimensions of the rectangle. explain with reasoning 1 solutions Answer 244624 by Fombitz(13828)   on 2010-09-11 08:41:49 (Show Source): You can put this solution on YOUR website! Prime numbers only have factors of 1 and themselves. So a rectangle with an area of 991 can only be either 1 cm wide by 991 cm long or 991 cm wide by 1 cm long.

Graphs/341574: 2x -3 > 3x -1 1 solutions Answer 244623 by Fombitz(13828)   on 2010-09-11 08:40:24 (Show Source): You can put this solution on YOUR website!

Graphs/341569: 2x -3 > 23 1 solutions Answer 244622 by Fombitz(13828)   on 2010-09-11 08:37:48 (Show Source): You can put this solution on YOUR website!

Reduction-of-unit-multipliers/341567: 2.5gm=xmg 1 solutions Answer 244621 by Fombitz(13828)   on 2010-09-11 08:36:54 (Show Source): You can put this solution on YOUR website! There are 1000mg/1g. 2.5g(1000mg/1g)=2500mg

Systems-of-equations/341556: for equation y=2x-4 select order of pairs that are solutions: 0,-4 -1,-6 2,3 -4,0 1 solutions Answer 244619 by Fombitz(13828)   on 2010-09-11 08:35:35 (Show Source): You can put this solution on YOUR website! Substitute values for x and y. I'll do one you do the rest. True, so (,) is a solution. Now do the rest of the ordered pairs in the same way.

Linear-systems/341064: I am not sure what to do on this one 3(x-0.87)-2x=4.98 1 solutions Answer 244527 by Fombitz(13828)   on 2010-09-10 16:07:32 (Show Source): You can put this solution on YOUR website! Distribute the . Take it from there and solve for .

Geometry_Word_Problems/340808: I need help w/solving 2x-5=3x ____ 4 1 solutions Answer 244525 by Fombitz(13828)   on 2010-09-10 16:06:04 (Show Source): You can put this solution on YOUR website! Now solve for .

Trigonometry-basics/340711: The accepted density for mercury is 13.6 g/mL. Calculate the percent error for each of these measurements. (c) 13.9 g/mL (d) 13.4 g/mL 1 solutions Answer 244524 by Fombitz(13828)   on 2010-09-10 16:05:07 (Show Source): You can put this solution on YOUR website! % Error=(Measured-Actual)/Actual x 100 . . . c) % . . . Do the next one, the same way.

Linear-equations/341049: Find m and b and graph. y=4-3x 1 solutions Answer 244522 by Fombitz(13828)   on 2010-09-10 16:02:58 (Show Source): You can put this solution on YOUR website! The line is in slope-intercept form, . . .

real-numbers/341052: Is 7.6 Rational or Irrational? 1 solutions Answer 244521 by Fombitz(13828)   on 2010-09-10 15:57:54 (Show Source): You can put this solution on YOUR website! Rational, it's the ratio of the two integers 76 and 10.

Functions/340858: Directions: For each function f, construct and simplify the difference quotient. f(x)=3x-5 - I have no problem with setting up the problem, but I have the most trouble with solving with fractions. 1 solutions Answer 244520 by Fombitz(13828)   on 2010-09-10 15:57:06 (Show Source): You can put this solution on YOUR website! Shouldn't be a problem here. . . . . Now divide both sides by .

Linear-systems/340960: for the following equation, state the value of the discriminant and then describe the nature of the solutions. -3x^2-9x-5=0 The equation has one or two real solutions? 1 solutions Answer 244519 by Fombitz(13828)   on 2010-09-10 15:54:36 (Show Source): You can put this solution on YOUR website! . . . Since there are two unique irrational solutions.

Polynomials-and-rational-expressions/341388: I really need help with rational functions! Please help me with the following: I need to find the zeroes, poles and asymptotes, then sketch x(x-1)(x-5)/(x+1)(x-3)(x-4) Thank you very much! 1 solutions Answer 244518 by Fombitz(13828)   on 2010-09-10 15:49:59 (Show Source): You can put this solution on YOUR website! Zeros make the numerator equal zero. Three solutions: . . . . . . . . . Vertical asymptotes occur when the denominator equals zero. Three solutions: . . . . . . . . .

Travel_Word_Problems/340655: How long does it take an automobile traveling at 63.2 km/h to become even with a car that is traveling in another lane at 49.2 km/h if the cars' bumpers are initially 137m apart? Answer your units in s. 1 solutions Answer 244517 by Fombitz(13828)   on 2010-09-10 15:37:36 (Show Source): You can put this solution on YOUR website! Rate*Time=Distance . . . Convert meters to km. Find when hrs. There are seconds in hour. sec.

Quadratic-relations-and-conic-sections/341469: Where does the parabola with the vertex (-4,5)and y-intercept -27 cross the x-axis? 1 solutions Answer 244516 by Fombitz(13828)   on 2010-09-10 15:34:11 (Show Source): You can put this solution on YOUR website! In vertex form, When . . . . . .

Average/340654: You have $100 and want to buy 100 items priced at $10, $3 and .50. What is the combination of items purchased when you must buy at least 1 of each? 1 solutions Answer 244515 by Fombitz(13828)   on 2010-09-10 15:26:25 (Show Source): You can put this solution on YOUR website! Let be the number of $10 parts, $3 parts, $0.50 parts. 1. . . . 2. From eq. 1, Substitute into eq. 2, The equation can only be satisfied when is a multiple of . In becomes a multiple of when . Then

Angles/340644: A supplement of an angle is six times as large as a complement of the angle. Find the measures of the angle, its supplement, and its complement. 1 solutions Answer 244514 by Fombitz(13828)   on 2010-09-10 15:13:40 (Show Source): You can put this solution on YOUR website! 1. 2. 3. Subtract eq. 1 from eq. 2, Substitute from eq. 3, degrees Then degrees . . . degrees

Equations/340645: How do you solve problems like 4/x-3 = 8/x Could you also show me the work so I know how to do other problems similar to this? 1 solutions Answer 244513 by Fombitz(13828)   on 2010-09-10 15:10:43 (Show Source): You can put this solution on YOUR website! Multiply both sides by the product of the denominators. In this case, ,

Travel_Word_Problems/340658: Hans and Heidi departed in opposite directions from the bus stop. Hans left at 1 p.m. and Heidi left at 2 p.m. Hans drove his bus 50 miles per hour and Heidi drove hers at 60 miles per hour. At what time were the two drivers 270 miles apart? 1 solutions Answer 244512 by Fombitz(13828)   on 2010-09-10 15:08:59 (Show Source): You can put this solution on YOUR website! Rate*Time=Distance . . . During that hour, Hans drove 50 miles. . . . . . . Find when , hrs. They will meet 5 hours after Heidi left.

Linear-equations/341466: a line passes through the point (-4,-3 and a slope of 3 write the equation for this line 1 solutions Answer 244511 by Fombitz(13828)   on 2010-09-10 15:06:19 (Show Source): You can put this solution on YOUR website! Use the point slope form of a line,

Equations/341468: 750=2x+4y what are the values of x and y? 1 solutions Answer 244510 by Fombitz(13828)   on 2010-09-10 15:04:59 (Show Source): You can put this solution on YOUR website! To solve for 2 variables, you need 2 independent equations. You only have 1. The best you can do is solve for in terms of or in terms of .

Money_Word_Problems/340652: an inheretance earned 6.1%interest compounded continously. after 5 years he had 51426.94. What was the original inheretance? 1 solutions Answer 244509 by Fombitz(13828)   on 2010-09-10 15:03:45 (Show Source): You can put this solution on YOUR website!

Numbers_Word_Problems/340649: find three consecutive odd integers such that sum of the smallest and 4 times the largest is 61 1 solutions Answer 244508 by Fombitz(13828)   on 2010-09-10 15:00:16 (Show Source): You can put this solution on YOUR website! The three integers are, . . . The integers are ,, and .

Trigonometry-basics/340968: Find the right part of the identity. CSC B/Sec B = 1 solutions Answer 244507 by Fombitz(13828)   on 2010-09-10 14:55:41 (Show Source): You can put this solution on YOUR website! . . . .

Equations/341465: 70x^2y^4/4x^3y I have to simplify this rational equation. This is what I have so far: = 7*10*x*x*y*y*y*y/1*4*x*x*x*y = 7*10*y*y*y/1*4*x*y = 70y^3/4xy Does this look right? 1 solutions Answer 244503 by Fombitz(13828)   on 2010-09-10 14:52:35 (Show Source): You can put this solution on YOUR website! It's easier to use the laws of exponents rather than expand the expressions. Further simplification is possible in your answer. . . .

Numbers_Word_Problems/341018: The sum of two numbers is 70. Their quotient is 13. what are the two numbers? 1 solutions Answer 244502 by Fombitz(13828)   on 2010-09-10 14:49:38 (Show Source): You can put this solution on YOUR website! Let the two numbers be A and B. 1. 2. From eq. 2, Substitute into eq. 1,

Length-and-distance/341390: what is the distance between a & b A(2,2) B(5,5) 1 solutions Answer 244491 by Fombitz(13828)   on 2010-09-10 13:41:41 (Show Source): You can put this solution on YOUR website! Use the distance formula,

Expressions-with-variables/341451: Factor Completely; 3x^8-15x7^15+15x^6 1 solutions Answer 244490 by Fombitz(13828)   on 2010-09-10 13:39:50 (Show Source): You can put this solution on YOUR website! Check this term, 15x7^15.

Mixture_Word_Problems/341445: how many liters of 25% alcohol must be mixed with 40 liters of a 35 % alcohol solution? 1 solutions Answer 244489 by Fombitz(13828)   on 2010-09-10 13:39:05 (Show Source): You can put this solution on YOUR website!