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Alan3354 answered: 30939 problems
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Volume/613606: Sandra and her husband are putting in a "above ground" pool. What will be the volume of the pool? (ignoring the thickness of the walls) If the length is 3.4 feet, the width is 2.3 feet and the highth is 1.8 feet? A. 1407.6 feet cubed B. 140.76 feet cubed C. 14.076 feet cubed D. 7.5 feet cubed Could someone please help me with this problem. I am so lost!! 1 solutions Answer 386091 by Alan3354(30959)   on 2012-05-22 08:38:17 (Show Source): You can put this solution on YOUR website! duplicate

logarithm/613542: which is the logarithmic form of 7 to the 5th power = 16807 1 solutions Answer 386060 by Alan3354(30959)   on 2012-05-21 22:03:49 (Show Source): You can put this solution on YOUR website! which is the logarithmic form of 7 to the 5th power = 16807 ------------

Travel_Word_Problems/613541: Number Series: 5, 6, 10, 19, 35, 60, ___ Please give the solution. Thank you. 1 solutions Answer 386059 by Alan3354(30959)   on 2012-05-21 22:02:05 (Show Source): You can put this solution on YOUR website! Number Series: 5, 6, 10, 19, 35, 60, 96

Travel_Word_Problems/613517: A cyclist bikes x distance at 10 miles per hour and returns over the same path at 8 miles per hour. What is the cyclist's average rate for the round trip in miles per hour? 1 solutions Answer 386058 by Alan3354(30959)   on 2012-05-21 22:00:12 (Show Source): You can put this solution on YOUR website! A cyclist bikes x distance at 10 miles per hour and returns over the same path at 8 miles per hour. What is the cyclist's average rate for the round trip in miles per hour? ---------- For a round trip, Avg = 2*r1*r2/(r1 + r2) (I can prove that, if necessary) = 2*10*8/(10+8) = 160/18 = 80/9 mi/hr =~ 8.888... mi/hr ---------- The distance is not relevant

Trigonometry-basics/613427: Water is dripping slowly through the bottom of a small conical cup that is 4 cm across and 6 cm deep. The cup loses half a cubic centimetre of water each minute. How fast is the water level dropping at the moment when the water is 3 cm deep? Give your answer both in exact form and to four decimal places. 1 solutions Answer 386050 by Alan3354(30959)   on 2012-05-21 19:13:01 (Show Source): You can put this solution on YOUR website! Water is dripping slowly through the bottom of a small conical cup that is 4 cm across and 6 cm deep. The cup loses half a cubic centimetre of water each minute. How fast is the water level dropping at the moment when the water is 3 cm deep? ------------ r = 2, h = 6 r = h/3 ----- @ h = 3: cm/min

Trigonometry-basics/613423: A motor turns at 5000 rpm. Calculate angular speed in radians per second. Use 2x radians = 1 revolution. Please show process and answer. 1 solutions Answer 386048 by Alan3354(30959)   on 2012-05-21 19:03:48 (Show Source): You can put this solution on YOUR website! A motor turns at 5000 rpm. Calculate angular speed in radians per second. Use 2x radians = 1 revolution. Please show process and answer. ------------- 1 rev = 2pi radians 5000 rev/min = 10000pi/min in radians = 10000pi/60 rad/sec = 500pi/3 rad/sec

Surface-area/613424: ow do you get 2000 for the surface area of a cylinder 1 solutions Answer 386044 by Alan3354(30959)   on 2012-05-21 18:44:52 (Show Source): You can put this solution on YOUR website! ow do you get 2000 for the surface area of a cylinder ---------- You get a cylinder of the size that has a surface area of 2000.

Quadratic-relations-and-conic-sections/613360: 12y^2-40x^2=480 1 solutions Answer 386013 by Alan3354(30959)   on 2012-05-21 16:02:47 (Show Source): You can put this solution on YOUR website! 12y^2-40x^2=480 -------------- That's nice. Do you have a question?

Trigonometry-basics/613354: Find all values of x to the nearest degree that satisfy the equation 3cos2x + cosx + 2 = 0 if 0o < x < 360o. 1 solutions Answer 386001 by Alan3354(30959)   on 2012-05-21 15:46:42 (Show Source): You can put this solution on YOUR website! Find all values of x to the nearest degree that satisfy the equation 3cos2x + cosx + 2 = 0 if 0 < x < 360 ------------- If it's and not 3cos(2x), Sub u for cos(x) ----- cos(x) = u = complex numbers I doubt you want the arccos of complex numbers. Clarify the first term with parentheses.

Linear-equations/613267: The federal government subsidizes many types of farms. How does the government determine what type of farm to subsidize? Why should or shouldn't the government subsidize farms? 1 solutions Answer 385983 by Alan3354(30959)   on 2012-05-21 14:28:52 (Show Source): You can put this solution on YOUR website! The federal government subsidizes many types of farms. How does the government determine what type of farm to subsidize? Why should or shouldn't the government subsidize farms? ----------------- That's not a math question.

Travel_Word_Problems/613342: it takes 1 hour 53 minutes and 20 seconds to drive to dallas 168 km. away. What would be your speed in kilometers per hour, (km/hr), and what would be your acceleration from the start, (m/s) 1 solutions Answer 385981 by Alan3354(30959)   on 2012-05-21 14:23:04 (Show Source): You can put this solution on YOUR website! it takes 1 hour 53 minutes and 20 seconds to drive to dallas 168 km. away. What would be your speed in kilometers per hour, (km/hr), and what would be your acceleration from the start, (m/s) -------------- d = r*t r = d/t = 168/(17/9) r =~ 88.94 km/hr ------------- Not enough info for acceleration, which is m/sec/sec, not m/sec

logarithm/613333: 8 = 27 find x 1 solutions Answer 385977 by Alan3354(30959)   on 2012-05-21 14:02:50 (Show Source): You can put this solution on YOUR website! 8 = 27 --------- = 27/8 x =~ 10.3747

logarithm/613335: 4 = x find x 1 solutions Answer 385974 by Alan3354(30959)   on 2012-05-21 13:57:17 (Show Source): You can put this solution on YOUR website! duplicate

logarithm/613336: 4 = x find x 1 solutions Answer 385973 by Alan3354(30959)   on 2012-05-21 13:56:33 (Show Source): You can put this solution on YOUR website! 4 = x find x ---------- x = x =~ 9.2877

Travel_Word_Problems/613287: a car covers a distance at speed of 20 km/h.it covers same distance while returning at speed of 30 km/h due to less traffic.what is average speed of car?. 1 solutions Answer 385970 by Alan3354(30959)   on 2012-05-21 13:41:14 (Show Source): You can put this solution on YOUR website! a car covers a distance at speed of 20 km/h.it covers same distance while returning at speed of 30 km/h due to less traffic.what is average speed of car? ------------------ Avg speed of a round trip, or equal distances, is Avg = 2*r1*r2/(r1 + r2) Avg = 2*20*30/(20 + 30) Avg = 24 km/hr ---------------- It's not 25, because more time is spent at the lower speed. The distance is irrelevant.

Permutations/613316: (9,5)(5,3)(4,1)Evaluate the expression. 1 solutions Answer 385959 by Alan3354(30959)   on 2012-05-21 13:24:32 (Show Source): You can put this solution on YOUR website! (9,5)(5,3)(4,1)Evaluate the expression. --------- What expression?

�t�e�s�t/613270: In base, the number 31 represents a prime number. In base k, however, this two-digit number represents a perfect square. For what value or values of k, 3< k <10, is 31 a perfect square? 1 solutions Answer 385923 by Alan3354(30959)   on 2012-05-21 10:53:52 (Show Source): You can put this solution on YOUR website! In base, the number 31 represents a prime number. In base k, however, this two-digit number represents a perfect square. For what value or values of k, 3< k <10, is 31 a perfect square? ------------ Assuming you mean base 10: ---- Bases 2 & 3 are eliminated by the 3. For bases 4 to 9, 31 = 3*b + 1, b is the base 4: 13 5: 16 6: 19 7: 22 8: 25 9: 28

Matrices-and-determiminant/613276: What is the determinant? |5 7| |3 8| This is altogether but I couldn't make a straight line that was long enough 1 solutions Answer 385921 by Alan3354(30959)   on 2012-05-21 10:47:42 (Show Source): You can put this solution on YOUR website! What is the determinant? |5 7| |3 8| ---------- Det = 5*8 - 3*7 = 19

test/613244: A ball is thrown off the top of a classroom building with an initial upward velocity of 10 feet per second. The height above the ground can be found using h= -16t(squared) + 10t + 40 with t representing time in seconds and h representing height in feet. How high is the ball after 0.8 seconds? When will the ball be 20 feet above the ground and headed down? 1 solutions Answer 385906 by Alan3354(30959)   on 2012-05-21 09:19:26 (Show Source): You can put this solution on YOUR website! A ball is thrown off the top of a classroom building with an initial upward velocity of 10 feet per second. The height above the ground can be found using h= -16t(squared) + 10t + 40 with t representing time in seconds and h representing height in feet. How high is the ball after 0.8 seconds? ----- Sub 0.8 for t h(0.8) = -16*0.8^2 + 10*0.8 + 40 = 37.76 feet ----------------- When will the ball be 20 feet above the ground and headed down? h = 20 20 = -16t^2 + 10t + 40 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 : . Discriminant d=1380 is greater than zero. That means that there are two solutions: . Quadratic expression can be factored: Again, the answer is: -0.848385976312919, 1.47338597631292. Here's your graph: ======================= Ignore the negative solution.

Angles/613217: if m ABC=900, then ________________ angle 1 solutions Answer 385903 by Alan3354(30959)   on 2012-05-21 09:11:40 (Show Source): You can put this solution on YOUR website! if m ABC=900, then ________________ angle --------- it's a large

Polygons/613047: what is the exterior angle and number of sides if the interior equal 140 degrees 1 solutions Answer 385856 by Alan3354(30959)   on 2012-05-20 19:23:27 (Show Source): You can put this solution on YOUR website! what is the exterior angle and number of sides if the interior equal 140 degrees ------- Ext angle = 180 - 140 = 40 degs n = 360/40 = 9 sides

percentage/613009: what is a 2% sales discount of 350$ ? pbarnar1@my.chemeketa.edu 1 solutions Answer 385855 by Alan3354(30959)   on 2012-05-20 19:09:23 (Show Source): You can put this solution on YOUR website! what is a 2% sales discount of 350$ ? ------- 2% of $350 = $350*0.02 = $7

Quadratic-relations-and-conic-sections/612997: Need help on writing the standard form of the equation: I tryed it out by completing the square this is what I done: grouped the y terms together divided 2 by -2 and squared it, moved x+3 to the right and added 1 to both sides. that's the last part I got. Am I on the right track? I think it's supposed to be a parabola. Please show your steps on how to get the answer. 1 solutions Answer 385844 by Alan3354(30959)   on 2012-05-20 17:36:48 (Show Source): You can put this solution on YOUR website! Need help on writing the standard form of the equation: I tryed it out by completing the square this is what I done: grouped the y terms together divided 2 by -2 and squared it, moved x+3 to the right and added 1 to both sides. that's the last part I got. Am I on the right track? I think it's supposed to be a parabola. Please show your steps on how to get the answer. ----- One more step

Exponential-and-logarithmic-functions/612970: cube root (8^2x)=sqrt2^(4x-1) 1 solutions Answer 385843 by Alan3354(30959)   on 2012-05-20 17:35:03 (Show Source): You can put this solution on YOUR website! Square both sides 4x = 4x - 1 No solution.

Geometry_proofs/612992: What is the relationship between a radius and a tangent at the point if tangency? 1 solutions Answer 385837 by Alan3354(30959)   on 2012-05-20 17:22:52 (Show Source): You can put this solution on YOUR website! duplicate

Geometry_proofs/612991: What is the relationship between an inscribed angle and its intercepted arc? 1 solutions Answer 385836 by Alan3354(30959)   on 2012-05-20 17:22:26 (Show Source): You can put this solution on YOUR website! What is the relationship between an inscribed angle and its intercepted arc? ---------- Arc length = angle*radius, angle in radians

test/612900: (3,4) (4,6) 1 solutions Answer 385821 by Alan3354(30959)   on 2012-05-20 16:26:46 (Show Source): You can put this solution on YOUR website! Do you have a question?

Linear-equations/612865: solve by graphing. y=1. y=x 1 solutions Answer 385820 by Alan3354(30959)   on 2012-05-20 16:25:55 (Show Source): You can put this solution on YOUR website! solve by graphing. y=1. y=x ------- y = 1 x = 1

Equations/612957: please help me sove this: 5/4x + 1/8x = 3/8 + x 1 solutions Answer 385818 by Alan3354(30959)   on 2012-05-20 16:21:41 (Show Source): You can put this solution on YOUR website! please help me sove this: 5/4x + 1/8x = 3/8 + x ----------- Multiply thru by 8

Parallelograms/612875: if angle dab=2x-10 and angle adc=3x find angle dab 1 solutions Answer 385816 by Alan3354(30959)   on 2012-05-20 16:07:55 (Show Source): You can put this solution on YOUR website! if angle dab=2x-10 and angle adc=3x find angle dab ---------- Not enough info.

Linear_Equations_And_Systems_Word_Problems/612917: While a vacation, Lisa Carr traveled a total distance of 425 miles. Her trip took 8.5 hours. What was her average speed? 1 solutions Answer 385815 by Alan3354(30959)   on 2012-05-20 16:06:15 (Show Source): You can put this solution on YOUR website! While a vacation, Lisa Carr traveled a total distance of 425 miles. Her trip took 8.5 hours. What was her average speed? ----------- d = r*t r = d/t