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# Recent problems solved by 'MathLover1'

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 test/677818: Hi I rlly need help on 4 math problems1 solutions Answer 421075 by MathLover1(6634)   on 2012-11-08 15:29:22 (Show Source): You can put this solution on YOUR website!post them here
 Exponents-negative-and-fractional/677750: I appologize in advance for the way this problem is typed, the square root sign cannot be cut & pasted. solve: zx^-4 (sqrt)X (yz^4)^3 / DIVIDED BY Z^7xy I came up with a horrible answer, 2916. My math work must have gone wrong some where?1 solutions Answer 421064 by MathLover1(6634)   on 2012-11-08 15:06:08 (Show Source): You can put this solution on YOUR website! ....square both nominator and denominator to eliminate from nominator .
 Linear-equations/677160: Hello, i'm not sure which category this should go in. I have a question of 'give the perimeter of this triangle in the form of no brackets, and brackets (different questions). The algebraic expression is t+2. How would you work this out?1 solutions Answer 420741 by MathLover1(6634)   on 2012-11-07 13:46:49 (Show Source): You can put this solution on YOUR website! the perimeter of this triangle is equal to the sum of all sides: since you are given the algebraic expression , it is the length of each side; an equilateral triangle has all sides equal so, , and and
 test/677170: What is the simplest form of the quotient? Squareroot3x^12y^10 / squareroot5x^6y^31 solutions Answer 420731 by MathLover1(6634)   on 2012-11-07 13:14:01 (Show Source):
 Probability-and-statistics/677114: Please help me solve this problem Assume that the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with three children will have two boys and one girl? 1 solutions Answer 420702 by MathLover1(6634)   on 2012-11-07 11:53:09 (Show Source): You can put this solution on YOUR website! Solution: The probability of a boy or a girl being born is . The probability of boys and girl being born is (0.5)^2(0.5)^1 =(0.5)^3 and the number of ways this can happen is C(2,1). Therefore the probability of exactly boys and girl being born is C(2,1)(0.5)^3 . C(2,1)(0.5)^3 since or %
 Graphs/677069: Graph the linear inequality 5x-4y < 40. 1 solutions Answer 420671 by MathLover1(6634)   on 2012-11-07 09:06:28 (Show Source):
 Linear-equations/677071: 6n=8(3n+7) 1 solutions Answer 420669 by MathLover1(6634)   on 2012-11-07 08:55:40 (Show Source):
Linear-equations/677070: Write the equation of the line with slope –6 and y-intercept (0, 9)
1 solutions

Answer 420668 by MathLover1(6634)   on 2012-11-07 08:49:51 (Show Source):
You can put this solution on YOUR website!

 Solved by pluggable solver: FIND a line by slope and one point What we know about the line whose equation we are trying to find out: it goes through point (0, 9) it has a slope of -6 First, let's draw a diagram of the coordinate system with point (0, 9) plotted with a little blue dot: Write this down: the formula for the equation, given point and intercept a, is (see a paragraph below explaining why this formula is correct) Given that a=-6, and , we have the equation of the line: Explanation: Why did we use formula ? Explanation goes here. We are trying to find equation y=ax+b. The value of slope (a) is already given to us. We need to find b. If a point (, ) lies on the line, it means that it satisfies the equation of the line. So, our equation holds for (, ): Here, we know a, , and , and do not know b. It is easy to find out: . So, then, the equation of the line is: . Here's the graph:

 Rational-functions/676889: Rationalize the denominator of: 4/square root of ab^2c^31 solutions Answer 420621 by MathLover1(6634)   on 2012-11-06 21:00:17 (Show Source):
 Exponents-negative-and-fractional/676942: What is 9.9 x 10 ^-8? ^-8 means: negative 8 exponent The teacher wants the answer in the form of a fraction?1 solutions Answer 420609 by MathLover1(6634)   on 2012-11-06 20:43:08 (Show Source): You can put this solution on YOUR website! = =....multiply both nominator and denominator by = =
 Exponential-and-logarithmic-functions/676917: Rewrite the rational exponent. assume that the radicand of an even root is a positive quantity. Is it 6/7 or 7/6 I cant remember?1 solutions Answer 420606 by MathLover1(6634)   on 2012-11-06 20:36:07 (Show Source): You can put this solution on YOUR website!in this case it is =
 Equations/676928: 9(x+1)=9x+11 solutions Answer 420599 by MathLover1(6634)   on 2012-11-06 20:26:15 (Show Source): You can put this solution on YOUR website! .....since this is false, means we have no solution if you look at this as system of equations and we have parallel lines, the two lines that are parallel will never intersect; so there are no solutions
 Numeric_Fractions/676893: Hello Tutor. I know you might be REALLY busy right now, but can you help me solve this problem? I kinda forgot how to subtract with a mixed number.. 4 4/15 - 3/41 solutions Answer 420577 by MathLover1(6634)   on 2012-11-06 19:40:53 (Show Source): You can put this solution on YOUR website! .......first write a mixed number as a fraction ....... could be written as now, substitute it in ..now find LCD for and : it is = = =
 Equations/676874: If the problem it 9k=10-k;-1 would -1 represent the k?1 solutions Answer 420566 by MathLover1(6634)   on 2012-11-06 19:26:34 (Show Source): You can put this solution on YOUR website! If the problem it , and if represent the , than we have If the problem it , and if represent the , than we have ....so, represents the
 test/676871: -3^2 = ______1 solutions Answer 420558 by MathLover1(6634)   on 2012-11-06 19:16:25 (Show Source):
 Subset/676884: what are all the subsets of 3,5,71 solutions Answer 420555 by MathLover1(6634)   on 2012-11-06 19:13:45 (Show Source): You can put this solution on YOUR website! all the subsets of {3,5,7} are: { }, {3}, {5}, {7}, {3,5}, {3,7}, {5,7}, {3,5,7} so, there are subsets of {3,5,7}
 test/676886: -(-2)^31 solutions Answer 420551 by MathLover1(6634)   on 2012-11-06 19:10:01 (Show Source):
 test/676873: -(2)^3=______1 solutions Answer 420542 by MathLover1(6634)   on 2012-11-06 19:00:30 (Show Source):
 Geometry_proofs/676738: Given: B is between A and C, AB=3x+2x, BC=35-x, AC=73 Prove: x=71 solutions Answer 420509 by MathLover1(6634)   on 2012-11-06 16:48:15 (Show Source): You can put this solution on YOUR website! if is between and ,than if ...for some reason, I believe you have here , , , than so, and check
 Geometry_proofs/676746: What is the conclusion for: ALl residents of Raleigh do not like worms. If you like to fish then you like worms1 solutions Answer 420502 by MathLover1(6634)   on 2012-11-06 16:35:20 (Show Source): You can put this solution on YOUR website! ALl residents of Raleigh do not like worms. If you like to fish then you like worms. the conclusion for:ALl residents of Raleigh do not like fish.
 Geometry_proofs/676702: Use a paragraph proof to prove the corresponding angles postulate: Given: line AB is parallel to line CD Prove: Corresponding angles are congruent EMAIL ME AT underseanemo@yahoo.com IF YOU NEED AN IMAGE.1 solutions Answer 420473 by MathLover1(6634)   on 2012-11-06 15:31:01 (Show Source): You can put this solution on YOUR website!Theorem 3.5 If two parallel lines are intersected by a transversal, then corresponding angles are congruent. Given: line AB is parallel to line CD Prove: Corresponding angles are congruent Proof: you have already learned vertical angles are congruent and corresponding angles are congruent if they are formed by parallel lines using this information we can go on to prove alternate interior angles are also congruent if they are formed by parallel lines since the lines are parallel, than < 1 and < 3 are congruent, < 2 and < 3 are vertical angles you have studied a theorem that states all vertical angles are congruent, so that means < 1 congruent to < 3 because they are corresponding angles, and < 2 congruent to < 3 because they are vertical angles, that means < 1 must be congruent to < 3
 test/676699: When you square each side of an EQUATION, is the resulting equation equivalent to the original? 1 solutions Answer 420461 by MathLover1(6634)   on 2012-11-06 14:38:35 (Show Source): You can put this solution on YOUR website! If an equation is true and each side is squared, or multiplied, or divided by the same nonzero number, the resulting equation equivalent to the original.
 Square-cubic-other-roots/676642: I need to solve for b in terms of x and a x=a+b+sqrt(a^2+b^2) x-a-b=sqrt(a^2+b^2) sqrt(x-a-b)=a^2+b^2 I do not know what to do from here in order to isolate the b. 1 solutions Answer 420445 by MathLover1(6634)   on 2012-11-06 13:09:33 (Show Source):
 Polynomials-and-rational-expressions/676607: Please help solve the equation Find the restricted values for the given rational expression. 6x+7/4x-12 A) X=12 B) x=-7/6, x=3 C.) none D. x=31 solutions Answer 420429 by MathLover1(6634)   on 2012-11-06 11:38:57 (Show Source): You can put this solution on YOUR website! ... the restricted values will be all values for what is equal to zero because is denominator and to divide by zero doesn't make sense set equal to zero and find .......all real numbers except so, answer is D.
 Polynomials-and-rational-expressions/676614: Simplify the rational expression. if the expression is already in simplest form , this as your answer. 3x-9/7x-21 A) 3/7 B)-3 C)-3/7 D.) 31 solutions Answer 420428 by MathLover1(6634)   on 2012-11-06 11:30:54 (Show Source): You can put this solution on YOUR website! so, answer is A)
 Travel_Word_Problems/676605: How long would it take to travel 135 miles at a speed of 60 mph1 solutions Answer 420427 by MathLover1(6634)   on 2012-11-06 11:28:17 (Show Source):
 Probability-and-statistics/676563: Expand (3a – b)61 solutions Answer 420415 by MathLover1(6634)   on 2012-11-06 09:53:24 (Show Source):
 test/676499: Domain and range1 solutions Answer 420394 by MathLover1(6634)   on 2012-11-06 09:06:18 (Show Source): You can put this solution on YOUR website! The domain is all the values that x is allowed to take on. The range is the set of all possible output values (usually y), which result from using the function formula. example: the domain and range of the following relation: (–3, 5), (–2, 5), (–1, 5), (0, 5), (1, 5), (2, 5) I'll just list the x-values for the domain and the y-values for the range: domain: –3, –2, –1, 0, 1, 2 range: 5 Is the relation a function? Yes, this is an example of a "boring" function: every x-value (each is different) goes to the exact same y-value, but even so this relation is a function that represents the horizontal line
 Miscellaneous_Word_Problems/676488: Johns car gets 26 miles to the gallon. It costs \$1.66 per gallon. How much does it cost if he drives 125 miles? 1 solutions Answer 420392 by MathLover1(6634)   on 2012-11-06 08:54:19 (Show Source): You can put this solution on YOUR website! Johns car gets , if he drives , he will need gallons if one gallon costs \$ per gallon, and if he drives , it cost \$
 Travel_Word_Problems/676545: A boy runs one k.m. in 12 min. How long will he take to runs 400 m?1 solutions Answer 420391 by MathLover1(6634)   on 2012-11-06 08:47:34 (Show Source): You can put this solution on YOUR website!A boy runs How long will he take to runs
 Expressions-with-variables/676547: in algebraic expression what is three fourths of the square of a number? 1 solutions Answer 420388 by MathLover1(6634)   on 2012-11-06 08:35:54 (Show Source): You can put this solution on YOUR website! let be a number, than three fourths () of the square of a number is