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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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Inverses/697147: Solve the following algebraically: my work: 2x+2=9x then subtract 2x from both sides 2=7x then divide out 7 to get x alone x=2/7 1 solutions Answer 429696 by Alan3354(30993)   on 2012-12-28 12:52:25 (Show Source): You can put this solution on YOUR website! Solve the following algebraically: my work: 2x+2=9x then subtract 2x from both sides 2=7x then divide out 7 to get x alone x=2/7 ================== Looks good.

test/697139: 3x+4y-15=0 1 solutions Answer 429695 by Alan3354(30993)   on 2012-12-28 12:50:11 (Show Source): You can put this solution on YOUR website! 3x+4y-15=0 ------------- Do you have a question?

Evaluation_Word_Problems/697132: if ab*4=cab,find a,b,c 1 solutions Answer 429694 by Alan3354(30993)   on 2012-12-28 12:48:37 (Show Source): You can put this solution on YOUR website! if ab*4=cab,find a,b,c ---------------- c = 4 ---- a & b can be any numbers

Exponents/697151: Rewrite with only positive exponents my work: I'm not sure if I should leave the on the bottom because the original problem is multiplication and now I changed it to division. 1 solutions Answer 429693 by Alan3354(30993)   on 2012-12-28 12:41:01 (Show Source): You can put this solution on YOUR website! Rewrite with only positive exponents my work: ------------ = =

Quadratic_Equations/697148: solve by completing the square: My work: then do half of four which is 2, then do 2times 2 and get 4. (x-2)(x-2)=-6 (x-2)=plus or mine x=2 plus or minus 1 solutions Answer 429691 by Alan3354(30993)   on 2012-12-28 12:17:06 (Show Source): You can put this solution on YOUR website! solve by completing the square: My work: then do half of four which is 2, then do 2times 2 and get 4. (x-2)(x-2)=-6 ---- i = sqrt(-1) ========================= (x-2)=plus or mine x=2 plus or minus ***** correct except for the i

Triangles/697125: if right angle triangle the sides of right angles are 3 and 4 find its hypoteneous? 1 solutions Answer 429673 by Alan3354(30993)   on 2012-12-28 09:23:45 (Show Source): You can put this solution on YOUR website! if right angle triangle [sic] the sides of right angles are 3 and 4 find its hypoteneous [sic]? ---------------- if right triangle the sides of right angles are 3 and 4 find its hypotenuse? ------------

test/697126: 6/2(1+2) 1 solutions Answer 429672 by Alan3354(30993)   on 2012-12-28 09:18:29 (Show Source): You can put this solution on YOUR website! 6/2(1+2) = 1 still always ------------ Add parentheses for clarification

Circles/697128: Find the exact area of a shaded region. One angle is 120 degrees 1 solutions Answer 429671 by Alan3354(30993)   on 2012-12-28 09:07:13 (Show Source): You can put this solution on YOUR website! Find the exact area of a shaded region. One angle is 120 degrees ---------------- It's all shade today. It's cloudy.

Length-and-distance/697129: dy/dx x^2+16/x find the coordinates of their point 1 solutions Answer 429670 by Alan3354(30993)   on 2012-12-28 09:06:31 (Show Source): You can put this solution on YOUR website! dy/dx x^2+16/x find the coordinates of their point ------------- What point? Is the numerator x^2 + 16? or 16?

Polynomials-and-rational-expressions/697097: What is the inverse of f(x)=y^2-(y-1)^2 1 solutions Answer 429657 by Alan3354(30993)   on 2012-12-27 22:57:28 (Show Source): You can put this solution on YOUR website! What is the inverse of f(x)=y^2-(y-1)^2 ------ No x terms in f(x)

Linear-systems/697092: 1^5x + 2^5 > -3^5x -1^25 what is the solution set? Could you please explain all steps especially the last step? 1 solutions Answer 429656 by Alan3354(30993)   on 2012-12-27 22:48:38 (Show Source): You can put this solution on YOUR website! 1^5x + 2^5 > -3^5x -1^25 1 + 32 > -243x - 1 34 > -243x -243x < 34 x > -34/243

Surface-area/697091: Find the surface area of a sphere with a radius of 12 cm. Approximate as 3.14 and round your answer to the nearest hundredth. 1 solutions Answer 429652 by Alan3354(30993)   on 2012-12-27 22:13:10 (Show Source): You can put this solution on YOUR website! Find the surface area of a sphere with a radius of 12 cm. ------------

Travel_Word_Problems/697055: Two cars leave a gas station and head in the same direction. Car A travels at 35 mph, while car B travels at 45 mph. If Car B leaves two hours after Car A, how many miles from the gas station will Car B catch up to Car A? 1 solutions Answer 429644 by Alan3354(30993)   on 2012-12-27 21:08:45 (Show Source): You can put this solution on YOUR website! Two cars leave a gas station and head in the same direction. Car A travels at 35 mph, while car B travels at 45 mph. If Car B leaves two hours after Car A, how many miles from the gas station will Car B catch up to Car A? -------------- Car A is 70 miles away when Car B starts (35*2) Car B gains on Car A at 10 mi/hr (45-35) 70/10 = 7 hours to overtake Car A 7*45 = 315 miles from the station

test/697081: I don't understand multiplying adding subtracting and dividing fractions please help 1 solutions Answer 429643 by Alan3354(30993)   on 2012-12-27 21:05:51 (Show Source): You can put this solution on YOUR website! I don't understand multiplying adding subtracting and dividing fractions please help ------------ Post a problem, or look at the 1000s of solved problems on this site.

Complex_Numbers/697080: How do I solve this 2-3i/1+i ? 1 solutions Answer 429640 by Alan3354(30993)   on 2012-12-27 21:03:34 (Show Source): You can put this solution on YOUR website! How do I solve this 2-3i/1+i ? ------------- Solve for what? Equations are solved. This is not an equation. There's no equal sign.

Complex_Numbers/697067: 5x^(2)-22+24 1 solutions Answer 429631 by Alan3354(30993)   on 2012-12-27 19:30:15 (Show Source): You can put this solution on YOUR website! 5x^(2)-22+24 = 5x^2 + 2

Complex_Numbers/697066: 22. What is the binomial of p^4-6p^3+7p^2+7p-3 1 solutions Answer 429630 by Alan3354(30993)   on 2012-12-27 19:13:59 (Show Source): You can put this solution on YOUR website! What is the binomial of p^4-6p^3+7p^2+7p-3 ----------- That's not a binomial bi means 2. binomials have 2 terms. That has 5

Systems-of-equations/697070: I'm not sure if I am solving this question on systems of equations right. the answer needs to be in simplest a+bi form: y=x-4 my work: then I did the quadratic equation: negative B plus or minus divided by 2a a=2 b=-7 c=11 4ac=22 7 plus or minus divided by 4= 7 plus or minus divided by 4. Then you break down to and and get 3 . My final answer was (7 plus or minus 3) divided by 4. 1 solutions Answer 429629 by Alan3354(30993)   on 2012-12-27 19:06:01 (Show Source): You can put this solution on YOUR website! I'm not sure if I am solving this question on systems of equations right. the answer needs to be in simplest a+bi form: y=x-4 my work: then I did the quadratic equation: negative B plus or minus divided by 2a a=2 b=-7 c=11 4ac=22 ************* 4ac = 88 --------- You did it right, except for that. Go from there. ======================= Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) Quadratic equation (in our case ) has the following solutons: For these solutions to exist, the discriminant should not be a negative number. First, we need to compute the discriminant : . The discriminant -39 is less than zero. That means that there are no solutions among real numbers. If you are a student of advanced school algebra and are aware about imaginary numbers, read on. In the field of imaginary numbers, the square root of -39 is + or - . The solution is , or Here's your graph:

Complex_Numbers/697014: simiplify (2x^-1+2y^-1)/(xy/4) 1 solutions Answer 429615 by Alan3354(30993)   on 2012-12-27 16:17:14 (Show Source): You can put this solution on YOUR website! simiplify (2x^-1+2y^-1)/(xy/4) ------------ =

Trigonometry-basics/697049: Find w 1) In the right triangle, the opposite side is w , the adajcent is w+7 and the hypotenuse is w+9. Can you please help me? Thanks in advance. 1 solutions Answer 429607 by Alan3354(30993)   on 2012-12-27 15:29:23 (Show Source): You can put this solution on YOUR website! Find w 1) In the right triangle, the opposite side is w , the adajcent is w+7 and the hypotenuse is w+9. -----------

test/696859: What are the implications of BP’s strategy in terms of public perception and how may this impact upon their performance? Critically discuss BP’s ability to strike a balance between its interests and wider needs and expectations in light of the strategic frameworks and models you have encountered. 1 solutions Answer 429604 by Alan3354(30993)   on 2012-12-27 15:15:09 (Show Source): You can put this solution on YOUR website! What are the implications of BP’s strategy in terms of public perception and how may this impact upon their performance? Critically discuss BP’s ability to strike a balance between its interests and wider needs and expectations in light of the strategic frameworks and models you have encountered. --------------- There's no way to calculate that. Not a math problem.

Geometry_proofs/697043: given points a:3,8 b:-6,3 c:8,-1 prove triangle abc is isosceles? 1 solutions Answer 429603 by Alan3354(30993)   on 2012-12-27 14:53:57 (Show Source): You can put this solution on YOUR website! given points a:3,8 b:-6,3 c:8,-1 prove triangle abc is isosceles? ------------ Find the lengths of the 3 sides.

Mixture_Word_Problems/697005: how many gallows of 40% antifreeze must be mixed wth 50 gallons of a 70% solution to get a mixture which is 50% antifreeze. 1 solutions Answer 429602 by Alan3354(30993)   on 2012-12-27 14:33:05 (Show Source): You can put this solution on YOUR website! how many gallows of 40% antifreeze must be mixed wth 50 gallons of a 70% solution to get a mixture which is 50% antifreeze. -------- g = gallons of 40% 50*70 + g*40 = (50+g)*50 Solve for g

Money_Word_Problems/697021: How much in interest would I pay monthly on $2,500 at 5%? I will pay it off in 6 months. Thank you. 1 solutions Answer 429601 by Alan3354(30993)   on 2012-12-27 14:30:57 (Show Source): You can put this solution on YOUR website! How much in interest would I pay monthly on $2,500 at 5%? I will pay it off in 6 months. --------------- It depends on what you pay per month, and whether the interest is on the remaining balance, or some other method.

Equations/697024: 6 ~ 2(1+2) = ? 1 solutions Answer 429600 by Alan3354(30993)   on 2012-12-27 14:28:55 (Show Source): You can put this solution on YOUR website! 6 ~ 2(1+2) = ? ----------- What does ~ mean?

Travel_Word_Problems/697037: how far can a car travel in 40 minutes if it is traveking at a speed of 50 miles per hour? 1 solutions Answer 429599 by Alan3354(30993)   on 2012-12-27 14:28:12 (Show Source): You can put this solution on YOUR website! how far can a car travel in 40 minutes if it is traveling at an average speed of 50 miles per hour ? 40 minutes = 2/3 hours ---------- d = r*t

Travel_Word_Problems/697038: how far can a car travel in 40 minutes if it is traveling at an average speed of 50 miles per hour ? 1 solutions Answer 429598 by Alan3354(30993)   on 2012-12-27 14:27:54 (Show Source): You can put this solution on YOUR website! how far can a car travel in 40 minutes if it is traveling at an average speed of 50 miles per hour ? 40 minutes = 2/3 hours ---------- d = r*t

Travel_Word_Problems/697042: if we was going five miles per hour and we had five mile left on out car journey how long left have we got?? 1 solutions Answer 429597 by Alan3354(30993)   on 2012-12-27 14:23:09 (Show Source): You can put this solution on YOUR website! if we was going five miles per hour and we had five mile left on out car journey how long left have we got?? -------- d = r*t t = d/r

Quadratic_Equations/697039: Solve each equation by factoring. 1. 4x2 – 17x – 15 = 0 2. 10x2 + 19x + 6 = 0 3. Solve 3x2 = 4,800 by using square roots. 1 solutions Answer 429596 by Alan3354(30993)   on 2012-12-27 14:22:18 (Show Source): You can put this solution on YOUR website! Solve each equation by factoring. 1. 4x2 – 17x – 15 = 0 There are 2 possible pairs of factors for the 4, 1*4 and 2*2. If they're both even, then you can't get an odd number for the x term, the 17. 15 = either 1*15 or 3*5 --------------------------- 2. 10x2 + 19x + 6 = 0 10 = 1*10 or 2*5 6 = 1*6 or 2*3 Notice the odd # of the x term. ------------ 3. Solve 3x2 = 4,800 by using square roots. Hint: divide by 3 -------------- Use x^2 for x squared. ^ (Shift 6) for exponents.

test/697023: Does <90degrees mean anything 1 solutions Answer 429587 by Alan3354(30993)   on 2012-12-27 11:51:30 (Show Source): You can put this solution on YOUR website! Does <90degrees mean anything ------------ It means less than 90 degs

Rate-of-work-word-problems/697019: It takes 14 taps to fill a swimming pool in 10 hours. How long will it take 5 taps to fill the pool? 1 solutions Answer 429586 by Alan3354(30993)   on 2012-12-27 11:50:39 (Show Source): You can put this solution on YOUR website! It takes 14 taps to fill a swimming pool in 10 hours. How long will it take 5 taps to fill the pool? ------------- Filling = 14*10 = 140 tap-hours 140 tap-hours/5 taps = 28 hours