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Fombitz answered: 13805 problems
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Radicals/326364: please help me solve this equation ∛(189*t^8 ) 1 solutions Answer 233639 by Fombitz(13828)   on 2010-07-28 08:53:31 (Show Source): You can put this solution on YOUR website! Your symbol didn't come through but I'm assuming it's a square root symbol?

Quadratic_Equations/326200: A ladder is leaning against a building. The distance from the bottom of the ladder to the building is 4 ft less than the length of the ladder. How high up the side of the building is the top of the ladder if that distance is 2 ft less than the length of the ladder? 1 solutions Answer 233638 by Fombitz(13828)   on 2010-07-28 08:51:40 (Show Source): You can put this solution on YOUR website! The ladder, ground, and wall form a right triangle. Use the Pythagorean theorem to solve. . . . Two solutions: Not allowed since , can't have a negative length. . . . . . . The ladder is 10 ft long, the base of the ladder is 8 ft from the wall, and the top of the ladder is 6 ft from the ground.

Equations/326209: Please help solve the following: Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and as dependent or independent. 6x-5y=30 5y-6x=-30 1 solutions Answer 233636 by Fombitz(13828)   on 2010-07-28 08:43:18 (Show Source): You can put this solution on YOUR website! 1. 2. Rewrite the second equation. Looks very similar to eq. 1, If you multiply eq. 1 by (-1) you will get eq. 2. Eq. 1 and eq. 2 are the same line. You have a dependent system with an infinite number of solutions since every solution of eq. 1 is also a solution of eq. 2.

logarithm/326317: evaluate the expression without using a calculator 9log9 10 thanks again 1 solutions Answer 233633 by Fombitz(13828)   on 2010-07-28 08:36:58 (Show Source): You can put this solution on YOUR website! Is the question? or do you mean ??

test/326314: Solve the equation 4^(7x – 2) = 17^(x + 1). Round your answer to the nearest thousandth. I cant get the right answer for this.. I know you have to make the equation into 7x-2 log4= x+1 log17 but I'm not sure what to after 1 solutions Answer 233629 by Fombitz(13828)   on 2010-07-28 08:33:27 (Show Source): You can put this solution on YOUR website! Change bases. }

logarithm/326295: express as a product logc(z)^-7 1 solutions Answer 233627 by Fombitz(13828)   on 2010-07-28 08:25:41 (Show Source): You can put this solution on YOUR website!

Probability-and-statistics/326305: One colored marker � red, blue, yellow, or green � is selected and a coin is tossed. Use the counting principle to determine the number of sample points in the sample space. 1 solutions Answer 233625 by Fombitz(13828)   on 2010-07-28 08:22:56 (Show Source): You can put this solution on YOUR website! 4 colors:Red, Blue, Yellow, Green 2 coin outcomes:H,T Total = 4*2=8

Expressions-with-variables/326293: Use the quadratic formula to solve the following equation. (Enter solutions from smallest to largest. If the solutions are complex, enter them from smallest to largest value of the imaginary part.) 27w^2 + 24w+1=0 1 solutions Answer 233624 by Fombitz(13828)   on 2010-07-28 08:17:50 (Show Source): You can put this solution on YOUR website! Use the quadratic formula,

Mixture_Word_Problems/326223: A radioactive material decays according to the formula A = A0(2)-t. How much of a 8 gram sample will be left in 6 years? 1 solutions Answer 233588 by Fombitz(13828)   on 2010-07-27 23:14:12 (Show Source): You can put this solution on YOUR website! grams

Expressions-with-variables/326292: Find a quadratic equation that has a solution set of {6, 7}. (Use the least possible coefficients.) 1 solutions Answer 233586 by Fombitz(13828)   on 2010-07-27 23:12:26 (Show Source): You can put this solution on YOUR website!

Linear-equations/326185: A plane makes a trip 5040 km in 7 h, flying with the wind. Returning against the wind , the plane makes the trip in 9 h. What is the speed of the wind? 1 solutions Answer 233585 by Fombitz(13828)   on 2010-07-27 23:11:20 (Show Source): You can put this solution on YOUR website! Let P be the plane speed in still air, W the wind speed. 1. . . . 2. Add eq. 1 to eq. 2 to eeliminate W. kph Then use either equation to solve for W, kph

Linear_Algebra/326239: 3x+11y=2 1 solutions Answer 233582 by Fombitz(13828)   on 2010-07-27 23:08:08 (Show Source): You can put this solution on YOUR website! What's the question?

Polynomials-and-rational-expressions/326291: find all the numbers for which the rational expression is undefined? 1 over 8w plus 1. its in fraction mode. 1 solutions Answer 233581 by Fombitz(13828)   on 2010-07-27 23:07:06 (Show Source): You can put this solution on YOUR website! The function is undefined when the denominator equals zero since division by zero is undefined.

Length-and-distance/326287: Can anyone help me with this problem? I have no idea where to even start?? Any help would really be appreciated! If 5x° and (7x – 12)° are the measures for vertical angles formed by two intersecting lines, what is the measure of each angle? 1 solutions Answer 233580 by Fombitz(13828)   on 2010-07-27 23:06:02 (Show Source): You can put this solution on YOUR website! First angle: degrees Second angle: degrees

Expressions-with-variables/326288: Use factoring to solve the equation. 5x^2+7x=0 1 solutions Answer 233578 by Fombitz(13828)   on 2010-07-27 23:04:03 (Show Source): You can put this solution on YOUR website! Two solutions: . . .

Expressions-with-variables/326289: Use factoring to solve the equation. 2y^2-50=0 1 solutions Answer 233576 by Fombitz(13828)   on 2010-07-27 23:02:36 (Show Source): You can put this solution on YOUR website!

Sequences-and-series/326179: Please help me find the 20th term of this arithmetic sequence -t, -t+5, -t+10, -t+15 1 solutions Answer 233461 by Fombitz(13828)   on 2010-07-27 16:31:38 (Show Source): You can put this solution on YOUR website!

Linear-equations/326164: what is the X-intercept of X-intercept of 5/7x-2y=4?? 1 solutions Answer 233459 by Fombitz(13828)   on 2010-07-27 16:30:19 (Show Source): You can put this solution on YOUR website! To find the x-intercept, set y=0, solve for x. . . . (28/5,0)

Sequences-and-series/326170: Please help me write the following sum without using sigma notation 3 E- sigma notation (3 cube root k) k=1 1 solutions Answer 233457 by Fombitz(13828)   on 2010-07-27 16:28:19 (Show Source): You can put this solution on YOUR website! Do you mean 3*cube root(k) or just cube root of k? or

Graphs/326173: |x-1| + |x-3| 1 solutions Answer 233455 by Fombitz(13828)   on 2010-07-27 16:25:52 (Show Source): You can put this solution on YOUR website! The graph of the left hand side is in red. The graph of the right hand side is in green. You can pick out the region where the left hand side is less than or equal to the right hand side. . . .

Sequences-and-series/326174: Please help me find the third term of this sequence an- 6n+5 1 solutions Answer 233454 by Fombitz(13828)   on 2010-07-27 16:23:13 (Show Source): You can put this solution on YOUR website! I think you mean , , ,

Linear-equations/326096: in each case determine whether the lines are parallel or perpendicular, or neither. y=x+7 y=-x+2 1 solutions Answer 233451 by Fombitz(13828)   on 2010-07-27 16:05:46 (Show Source): You can put this solution on YOUR website! Parallel lines have identical slopes. Perpendicular lines have slopes that are negative reciprocals. . . . They are not parallel. They are perpendicular. . . .

Polynomials-and-rational-expressions/326160: Please Help! If two numbers have a sum of 9, then what polynomial represents their product? 1 solutions Answer 233450 by Fombitz(13828)   on 2010-07-27 16:03:52 (Show Source): You can put this solution on YOUR website! Let the two numbers be A and B. Then their product is

Radicals/326158: solve for P: T=(VP/R) 1 solutions Answer 233448 by Fombitz(13828)   on 2010-07-27 16:02:26 (Show Source): You can put this solution on YOUR website!

Sequences-and-series/326095: A partial sum of an arithmetic sequence is given. Can you please help me find the sum? 5+10+15+...+75 1 solutions Answer 233447 by Fombitz(13828)   on 2010-07-27 16:01:46 (Show Source): You can put this solution on YOUR website!

logarithm/326159: find aproximation ln 0.000911 and 10^2.4154 1 solutions Answer 233446 by Fombitz(13828)   on 2010-07-27 15:58:23 (Show Source): You can put this solution on YOUR website!

Quadratic_Equations/326123: How many ounces of pure gold must be added to five ounces of something that is 1% gold in order that the mixture is 6% gold? 1 solutions Answer 233444 by Fombitz(13828)   on 2010-07-27 15:57:14 (Show Source): You can put this solution on YOUR website! Let X be the number of ounces of 100% gold. ounces

Probability-and-statistics/326136: A bag contains 12 marbles, one marble is drawn. The probability of drawing a blue is 1/3 and the probability of drawing a red or a blue is 1/2. How many of the marbles are red 1 solutions Answer 233443 by Fombitz(13828)   on 2010-07-27 15:54:58 (Show Source): You can put this solution on YOUR website! 4 blue marbles . . . 2 red marbles

Probability-and-statistics/326140: A die is rolled. find the odds for rolling a 5 or an even number 1 solutions Answer 233441 by Fombitz(13828)   on 2010-07-27 15:52:18 (Show Source): You can put this solution on YOUR website! There are six possible outcomes from rolling a die (1,2,3,4,5,6). One of them is a 5. Three of them are even. P(5)=1/6 P(even)=3/6=1/2 P(5 or even)=1/6+3/6=4/6=2/3

Linear_Algebra/326144: How would you simplify this? (x^-7y^11z^14)^-2 1 solutions Answer 233440 by Fombitz(13828)   on 2010-07-27 15:49:48 (Show Source): You can put this solution on YOUR website!

Probability-and-statistics/326154: License plates in a particular state display 2 letters followed by 4 numbers. How many different license plates can be manufactured? (repetitions are allowed) 1 solutions Answer 233439 by Fombitz(13828)   on 2010-07-27 15:48:25 (Show Source): You can put this solution on YOUR website! There are 26 letters and 10 digits and 6 positions to fill.