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Recent problems solved by 'Alan3354'

Alan3354 answered: 30973 problems
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Numbers_Word_Problems/349797: Find four consecutive odd integers whose sum is 96. 1 solutions Answer 250032 by Alan3354(30993)   on 2010-09-29 17:55:51 (Show Source): You can put this solution on YOUR website! 96/4 = 24, the center of the numbers. --> 21, 23, 25, 27

Quadratic-relations-and-conic-sections/349811: sketch the graph of each ellipse 1.x^2/9+y^2/4=1 2.x^2/9+y^2=1 3.x^2+y^2/4=1 4.y^2/4-x^2/25=1 5.y^2/9-X^2/16=1 6.x^2/25-y^2=1 7.x^2-y^2/9=1 8.x^2-y^2/25=1 9.x^2/9-y^2=1 10.9x^2-16y^2=144 11.9x^2-25y^2=225 12.x^2-y^2=1 13.y^2-x^2=1 1 solutions Answer 250031 by Alan3354(30993)   on 2010-09-29 17:54:43 (Show Source): You can put this solution on YOUR website! dl the FREE graph software at http://www.padowan.dk.com ---------- Use F6, Enter Relationship, for these.

Quadratic_Equations/349819: Find the zeros of Q(x) = 10x – x2 + 5 using the quadratic formula. (Enter your answers from smallest to largest.) 1 solutions Answer 250030 by Alan3354(30993)   on 2010-09-29 17:52:30 (Show Source): You can put this solution on YOUR website! Duplicate

Proportions/349822: how do i express the rate in miles per hour? 1 solutions Answer 250029 by Alan3354(30993)   on 2010-09-29 17:52:03 (Show Source): You can put this solution on YOUR website! It's the number of miles divided by the number of hours.

Quadratic_Equations/349820: Find the zeros of Q(x) = 10x – x2 + 5 using the quadratic formula. (Enter your answers from smallest to largest.) 1 solutions Answer 250028 by Alan3354(30993)   on 2010-09-29 17:51:14 (Show Source): You can put this solution on YOUR website! a = -1 b = 10 c = 5 --------- or a = 1 b = -10 c = -5 Use the quadratic formula.

Polygons/349622: HOW MANY SIDES DO A POLYGON WITH THE SUM OF 160 HAVE? 1 solutions Answer 249949 by Alan3354(30993)   on 2010-09-29 13:24:38 (Show Source): You can put this solution on YOUR website! 160 is the sum of what?

Graphs/349683: I do not understand the concept for inequalities. From where do I find the numbers to add, subtract, divide, or multiply for the answer. 5y+2 is equal to or less than -1 +4y. I am in my third week of a nine week course and already failing. thank you for any assistance you can provide. helen hicks 1 solutions Answer 249925 by Alan3354(30993)   on 2010-09-29 12:24:05 (Show Source): You can put this solution on YOUR website! I do not understand the concept for inequalities. From where do I find the numbers to add, subtract, divide, or multiply for the answer. 5y+2 is equal to or less than -1 +4y. ------------------- 5y+2 <= 4y-1 The object is to get y on one side of the equal sign by itself. Subtract 4y y+2 <= -1 Subtract 2 y <= -3 That's all

Geometry_Word_Problems/349678: write an equation of a parabola that passes through the points (1,4), (-1,-6), and (2,18) 1 solutions Answer 249923 by Alan3354(30993)   on 2010-09-29 12:21:47 (Show Source): You can put this solution on YOUR website! write an equation of a parabola that passes through the points (1,4), (-1,-6), and (2,18) ----------------------- 6y - 18x^2 - 30x = -24 From an Excel sheet --> y = 3x^2 + 5x - 4

Mixture_Word_Problems/349626: How many liters of a 10% alcohol solution should be mixed with 12 liters of a 20% alcohol solution to obtain a 15% alcohol solution. 1 solutions Answer 249921 by Alan3354(30993)   on 2010-09-29 12:15:27 (Show Source): You can put this solution on YOUR website! How many liters of a 10% alcohol solution should be mixed with 12 liters of a 20% alcohol solution to obtain a 15% alcohol solution. --------------- 15% is the midpoint, or average, so it's equal amounts. --> 12 liters

Sequences-and-series/349508: find the missing sequence 2 _ _ _ _ 2048 using multiplication thanks 1 solutions Answer 249810 by Alan3354(30993)   on 2010-09-28 22:57:16 (Show Source): You can put this solution on YOUR website! Multiply by 4

Linear-equations/349521: Find an equation of the line containing the points (8, 7) and (8, 5). once i worked it i came up with. 5 7 2 8 8 = 0 = 0 m=0 or do you put undefined ????? 1 solutions Answer 249802 by Alan3354(30993)   on 2010-09-28 22:49:39 (Show Source): You can put this solution on YOUR website! slope m = diffy/diffx = 2/0 m is undefined, or infinite. The line is "vertical", parallel to the y-axis. ------------------ PS m = 0 is parallel to the x-axis.

Linear_Algebra/349510: is it possible to graph 2x+4=0 1 solutions Answer 249792 by Alan3354(30993)   on 2010-09-28 22:30:28 (Show Source): You can put this solution on YOUR website! Yes, it is.

test/349490: N+8%=$627.42 what is the amount of N? 1 solutions Answer 249788 by Alan3354(30993)   on 2010-09-28 22:15:21 (Show Source): You can put this solution on YOUR website! 8% of what?

Equations/349494: What are the solution(s) of |x|=3? 1 solutions Answer 249787 by Alan3354(30993)   on 2010-09-28 22:14:28 (Show Source): You can put this solution on YOUR website! |3| = 3 |-3| = 3

Inequalities/349470: how do you fugure out 1<=y<=3 1 solutions Answer 249782 by Alan3354(30993)   on 2010-09-28 21:57:49 (Show Source): You can put this solution on YOUR website! It's already figured out. y 1 or more, and y is 3 or less. It's all values between 1 and 3, including 1 and 3.

Problems-with-consecutive-odd-even-integers/349473: The sum of two positive whole numbers is 96. What is the greatest possible product of two positive whole numbers whose sum is 96? 1 solutions Answer 249780 by Alan3354(30993)   on 2010-09-28 21:54:30 (Show Source): You can put this solution on YOUR website! It's (96/2)*(96/2) = 2304

Quadratic_Equations/349474: Solve the following equation using the quadratic formula: -x^2-4x-2=2 1 solutions Answer 249779 by Alan3354(30993)   on 2010-09-28 21:53:36 (Show Source): You can put this solution on YOUR website! -x^2-4x-2=2 a = 1 b = 4 c = 4 Use those in the formula.

Parallelograms/349468: what does a parallelogram whith a 30 degress angle look like. 1 solutions Answer 249778 by Alan3354(30993)   on 2010-09-28 21:52:06 (Show Source): You can put this solution on YOUR website! It looks like a "sharp diamond" or a pointy thing.

Quadratic_Equations/349477: Solve the following equation using the quadratic formula: 13-6x+x^2=0 1 solutions Answer 249777 by Alan3354(30993)   on 2010-09-28 21:50:44 (Show Source): You can put this solution on YOUR website! Do you know the quadratic formula? a = 1 b = -6 c = 13 Use those.

Radicals/349485: Okay I've been staring at this problem for 10 mins, and I just don't know how to get the answer. Please help me. sqrt ( x - 2 ) + 3 = sqrt ( 4x + 1 ) I know we're supposed to get one radical by itself, but one already is. And then the power rule to eliminate the radicals. But from there, I'm stuck. Thank you for your time. 1 solutions Answer 249776 by Alan3354(30993)   on 2010-09-28 21:49:29 (Show Source): You can put this solution on YOUR website! You square both sides. Then you'll have 1 radical. Isolate it, and square both sides again. Then you'll be radical free.

Circles/349269: A large pipe is placed next to a wall and a 1 ft high block is placed 5 ft from the wall to keep the pipe in place as show in the figure. What is the radius of the pipe ? The answer in the book says 6-square root 10, but I'm not sure how they got that answer. I have a link to the image from my textbook. http://img237.imageshack.us/img237/2158/dsc00343ts.jpg 1 solutions Answer 249724 by Alan3354(30993)   on 2010-09-28 16:44:47 (Show Source): You can put this solution on YOUR website! Extend a line from the top of the block to the vertical line thru the center of the pipe. You get a right triangle with r as the hypotenuse. If you solve that you'll get 6 ± sqrt(10) 6 - sqrt(10) is the answer. 6 + sqrt(10) puts the block on the other side of the pipe, between the pipe and the wall. ---------------- btw, that's not a "large" pipe, less than 3 ft OD.

Finance/349267: I was out sick today and missed math. We covered "compound interest" and I was trying to get caught up at home. My homework included this problem: How much money would you have to deposit at a 3% interest rate compounded per year to have $500 after 2 years? So basically I need to find the initial amount. I put together the equation 500=x(1+.03)^2. Now I just need to solve for x but I don't know how to. Could you please help me? 1 solutions Answer 249711 by Alan3354(30993)   on 2010-09-28 16:19:11 (Show Source): You can put this solution on YOUR website! 500=x(1+.03)^2 x = 500/(1.03)^2 Just calculator work x = $471.30

Polynomials-and-rational-expressions/349123: I need help with trying to simplify with a postive exponent. The problems have large curved braces on both sides and a line separating the lower part. (4x) ^-3= y^3 (-a^2b) ^3 2b^-1 .(3xy-^2) ^2 x^3 1 solutions Answer 249707 by Alan3354(30993)   on 2010-09-28 16:16:35 (Show Source): You can put this solution on YOUR website! Multiply NUM and DEN by (4x)^3 = = ----------------------- = Multiply NUM and DEN by b = --------------------- (3xy-^2)^2/x^3 ---------- y-^2 isn't right.

Graphs/349162: putting in standard form equation the circle with the center (-1,3) with a y=1 book has answer of 4 but not sure how to solve? 1 solutions Answer 249700 by Alan3354(30993)   on 2010-09-28 16:02:42 (Show Source): You can put this solution on YOUR website! putting in standard form equation the circle with the center (-1,3) with a y=1 book has answer of 4 but not sure how to solve? --------------- with a y=1 ?? What does that mean?

Polygons/349211: how do I draw the triangles in a hexagon? 1 solutions Answer 249696 by Alan3354(30993)   on 2010-09-28 15:59:07 (Show Source): You can put this solution on YOUR website! Any way you want, unless there are some restrictions you didn't mention.

Volume/349183: A cylinder has a diameter of 5 in. and a height of 10 in. Determine its volume in cubic centimeters. 1 solutions Answer 249686 by Alan3354(30993)   on 2010-09-28 15:45:56 (Show Source): You can put this solution on YOUR website! A cylinder has a diameter of 5 in. and a height of 10 in. Determine its volume in cubic centimeters. ---------------- 1 inch = 2.54 cm r = 2.5 inches = 6.35 cm h = 10 inches = 25.4 cm

Radicals/349075: Let a - 1 and b - 64. a. Evaluate sqrt a + sqrt b. Then find sqrt a+b. Are they equal? b. Evaluate ^n sqrt a + ^n sqrt b. Then find ^n sqrt a+b. Are they equal? c. Complete the following: be general, ^n sqrt a + ^n sqrt b = _______ based on the observations in parts (a) and (b) of this exercise. 1 solutions Answer 249588 by Alan3354(30993)   on 2010-09-28 11:21:06 (Show Source): You can put this solution on YOUR website! Let a - 1 and b - 64. a. Evaluate sqrt a + sqrt b. Then find sqrt a+b. Are they equal? What did you get for sqrt(a) + sqrt(b)? What did you get for sqrt(a+b) ? Are they equal ? ------------------------------- b. Evaluate ^n sqrt a + ^n sqrt b. Then find ^n sqrt a+b. Are they equal? What does ^n mean, in a + ^n sqrt b ?? ----------------------------- c. Complete the following: be general, ^n sqrt a + ^n sqrt b = _______ based on the observations in parts (a) and (b) of this exercise. -------------------------- Same question as b above.

Miscellaneous_Word_Problems/349072: find the time taken for an 8cubicmeter tank to be filed with a pipe of 1.8 cubic meter 1 solutions Answer 249505 by Alan3354(30993)   on 2010-09-28 07:48:10 (Show Source): You can put this solution on YOUR website! It depends on the flow rate.

Travel_Word_Problems/348965: a bike is travelling 35km/h. A car is travelling 80km/h and begins 180km behind the bike. How long will it take the car to reach the bike? 1 solutions Answer 249427 by Alan3354(30993)   on 2010-09-27 21:57:39 (Show Source): You can put this solution on YOUR website! a bike is travelling 35km/h. A car is travelling 80km/h and begins 180km behind the bike. How long will it take the car to reach the bike? --------------- The speed of the car relative to the bike is 45 kph (80 - 35). 180/45 = 4 hours. ----------------- All motion is relative. Pick your frame of reference.

Numeric_Fractions/348932: -3/4 +2/5 1 solutions Answer 249426 by Alan3354(30993)   on 2010-09-27 20:44:09 (Show Source): You can put this solution on YOUR website! -3/4 +2/5 ------------- Find a common denominator. The product always works, even if it's not the LCD (Least Common Denominator). Schools are obesessed with the LCD for no good reason. ---------- 4*5 = 20, the common denominator (also the LCD) ----------- -3/4 +2/5 = -15/20 + 8/20 = (-15 + 8)/20 = -7/20

Polygons/348939: the measure of an interior angle of a regular polygon is given. find the number of sides. 1)120 2)108 3)135 1 solutions Answer 249424 by Alan3354(30993)   on 2010-09-27 20:41:21 (Show Source): You can put this solution on YOUR website! the measure of an interior angle of a regular polygon is given. find the number of sides. 1)120 2)108 3)135 ------- Subtract them from 180 to find the exterior angle, then divide that into 360