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Volume/356766: If I have a hole that is 20 inches deep an 7 inches in Dia, how many bags of 40 lbs quickcrete will it take to fill 8 holes? 1 solutions Answer 254670 by Fombitz(13828)   on 2010-10-15 08:41:57 (Show Source): You can put this solution on YOUR website! First find the volume of each hole which can be modeled as a cylinder with a 7" diameter and 20" height. or approximately cubic inches For 8 holes, cubic inches. . . . From the Quikrete 5000 spec sheet, each 80 lb bag provides 0.60 cubic feet. Convert to cubic inches (12 inches/foot)^3. cubic inches So then, bags . . . If this is a math problem, round up to 6 bags. If this is a project, buy 10% more, get 7 bags.

Human-and-algebraic-language/356759: A farmer has 800 yd of fencing to enclose a rectangular pasture. Since one side of the pasture borders a river, that side does not need to be fenced. If the side perpendicular to the river must be twice as long as the side parallel to the river, what are the dimensions of the rectangular pasture? 1 solutions Answer 254668 by Fombitz(13828)   on 2010-10-15 08:32:06 (Show Source): You can put this solution on YOUR website! . . The perimter of the fencing is, . . The dimensions are 160 yds wide x 320 yds deep.

Rectangles/356555: if the perimeter of a rectangle is 28, what is the greatest possible area of the rectangle? 1 solutions Answer 254624 by Fombitz(13828)   on 2010-10-15 00:21:36 (Show Source): You can put this solution on YOUR website! The maximum area occurs when the rectangle is actually a square.

Evaluation_Word_Problems/356707: solve x/4 - 3/5 = 3/4 1 solutions Answer 254623 by Fombitz(13828)   on 2010-10-15 00:19:53 (Show Source): You can put this solution on YOUR website! Multiply both sides by Now solve for .

logarithm/356439: Thank you for your help! Sketch each function. State the domain, range, values of intercepts, and equations of any asymptotes that exist. f(x)= -log2,(x+2)+3 1 solutions Answer 254622 by Fombitz(13828)   on 2010-10-15 00:18:46 (Show Source): You can put this solution on YOUR website! Domain:, :(,) Vertical asymptote at . . . Range:(,) . . . y-intercept: , (0,2) . . . x-intercept:, (6,0) . . .

Equations/356557: 3 over 2 y-y=4+one half y 1 solutions Answer 254621 by Fombitz(13828)   on 2010-10-15 00:11:45 (Show Source): You can put this solution on YOUR website! Multiply both sides by 2. No solution.

Miscellaneous_Word_Problems/356576: In testing a hybrid engine, engineers are trying various mixtures of gasoline and methanol. How much of a 90% gasoline mixture and a 75% gasoline mixture would be needed for 600 L of an 85% gasoline mixture? 1 solutions Answer 254620 by Fombitz(13828)   on 2010-10-15 00:10:21 (Show Source): You can put this solution on YOUR website! Let A be the amount of 90% mixture, B the amount of 75% mixture. Volume: 1. Concentration: 2. Multiply eq. 1 by (-15) and add to eq. 2 to eliminate B and solve for A. ml Then from eq. 1, ml

test/356541: 1) Simplify the following expression: 6y^10 - 3y^6 + 4y^3 +8y/ 3y^3 (no decimals allowed) 1 solutions Answer 254618 by Fombitz(13828)   on 2010-10-15 00:06:42 (Show Source): You can put this solution on YOUR website!

Trigonometry-basics/356522: find all solutions to 5sinx+1=3sinx 1 solutions Answer 254617 by Fombitz(13828)   on 2010-10-15 00:04:07 (Show Source): You can put this solution on YOUR website! degrees and degrees

Rational-functions/356500: how do you change y=2x^2+24x+25 standard form to vertex form? 1 solutions Answer 254616 by Fombitz(13828)   on 2010-10-15 00:01:30 (Show Source): You can put this solution on YOUR website! <--- Factor out the 2. <--- Add and subtract (1/2) coefficient of x squared.

Triangles/356488: the measure of one angle of a triangle is 40. the measures of the other two angles are in a ratio of 3:4 1 solutions Answer 254613 by Fombitz(13828)   on 2010-10-14 23:54:38 (Show Source): You can put this solution on YOUR website! For a triangle, The other two angles are degrees and degrees.

Miscellaneous_Word_Problems/356616: consider the system y=a and x=b where a and b are real numbers. Is this system dependent or independent ? Is it consistent or inconsistent? Describe the system If it is consistent, what is the solution. 1 solutions Answer 254611 by Fombitz(13828)   on 2010-10-14 23:53:04 (Show Source): You can put this solution on YOUR website! Consistent and independent since it provides one unique solution or intersection that occurs at (,).

expressions/356621: (16+a)x5-4 1 solutions Answer 254610 by Fombitz(13828)   on 2010-10-14 23:51:24 (Show Source): You can put this solution on YOUR website! What's your question??

Linear-equations/356630: How do I make up a system that will have an infinite number of solutions in y=a+bx and Ax+By=C forms? 1 solutions Answer 254609 by Fombitz(13828)   on 2010-10-14 23:50:44 (Show Source): You can put this solution on YOUR website! Make them dependent equations. one equation a multiple of another. Example: . . . Both are examples of dependent systems with an infinite number of solutions.

Trigonometry-basics/356673: How do I factor this using difference of two squares? x^8+12x^4+64 Thanks a million!!! 1 solutions Answer 254606 by Fombitz(13828)   on 2010-10-14 23:48:34 (Show Source): You can put this solution on YOUR website! You can't. It's not a difference of two squares. A difference of two squares would only have two terms in it. You need to use the quadratic formula to solve for .

Linear-systems/356665: Please teach me how to solve this question. -3x-4y=2 3x+3y=-3 1 solutions Answer 254605 by Fombitz(13828)   on 2010-10-14 23:46:51 (Show Source): You can put this solution on YOUR website! You're solving the system of equations. Add the two equations together to eliminate x and solve for y. Then use either equation to solve for x.

Probability-and-statistics/356666: A small box contains 20 marbles, eight of which are green, seven are red and five are blue. If you reach in to grab three marbles, one at a time and do not replace them, what is the probability that each marble will be blue? Report 5 decimal places in your answer. 1 solutions Answer 254604 by Fombitz(13828)   on 2010-10-14 23:44:49 (Show Source): You can put this solution on YOUR website! 8 Green 7 Red 5 Blue 20 Total . . . P(1st Blue)= P(2nd Blue)= P(3rd Blue)= P(3 Blues)=

Probability-and-statistics/356670: If a single dice is tossed, what is the probability of tossing an even number? Report your answer in decimal form and keep all decimal places in your answer. 1 solutions Answer 254603 by Fombitz(13828)   on 2010-10-14 23:42:20 (Show Source): You can put this solution on YOUR website! There are 6 possible outcomes (1-6). There are 3 possible even outcomes (2,4,6). P(even)

Exponents/356687: what is the solution to 3(y2+y)-2y and how did you get that 1 solutions Answer 254602 by Fombitz(13828)   on 2010-10-14 23:40:47 (Show Source): You can put this solution on YOUR website!

Mixture_Word_Problems/356700: How much water should you add to 230 mL of a 20% salt solution to make the solution 15% salt? 1 solutions Answer 254600 by Fombitz(13828)   on 2010-10-14 23:39:20 (Show Source): You can put this solution on YOUR website! Pure water is a 0% solution. Let A be the amount of water added. ml

Mixture_Word_Problems/356464: how much 40% alcohol solution and 25% solution must be mixed together to get 24 gallons of 30% solution? 1 solutions Answer 254458 by Fombitz(13828)   on 2010-10-14 17:01:39 (Show Source): You can put this solution on YOUR website! Let A be the amount of 40% solution, B the amount of 25% solution. Volume: 1. Concentration: 2. Multiply eq. 1 by (-5) and add to eq. 2 to eliminate B and solve for A. gallons Then from eq. 1, gallons

logarithm/356460: Can you help me, please? Logarithm One solution is 250 times more acidic than another one. The less acidic solution measures 4.7 on the pH scale. What would be the pH of the more acidic solution. 1 solutions Answer 254457 by Fombitz(13828)   on 2010-10-14 16:58:46 (Show Source): You can put this solution on YOUR website! The stronger acid has a pH of .

Polynomials-and-rational-expressions/356456: Solve 5x^2 − 34x = 0 by factoring. What is the smaller answer? Well I realized that this answer had to be the difference of squares, but no whole number has the square root of 34. I would do quadratic, but I don't have a c, please help me, this is greatly appreciated. 1 solutions Answer 254453 by Fombitz(13828)   on 2010-10-14 16:53:19 (Show Source): You can put this solution on YOUR website! Two solutions: . . . . . . Also, you do have a but it's equal to zero. and and . . . Remember, the quadratic formula ALWAYS works.

Linear-equations/356458: write 2x-3y=21 in slope-intercept form 1 solutions Answer 254452 by Fombitz(13828)   on 2010-10-14 16:48:43 (Show Source): You can put this solution on YOUR website!

Expressions-with-variables/356453: How do you simplify ? Please show work. 1 solutions Answer 254451 by Fombitz(13828)   on 2010-10-14 16:47:43 (Show Source): You can put this solution on YOUR website!

Expressions-with-variables/356447: ax + b – 4 = b and a is not equal to 0 then x = 4/a always sometimes * never. 1 solutions Answer 254450 by Fombitz(13828)   on 2010-10-14 16:45:44 (Show Source): You can put this solution on YOUR website! , always except when

Travel_Word_Problems/356449: I think my vehicles speedometer is not reading correctly and I am terrible with math. Here is my question if you can help me please: How fast is my vehicle traveling if it took me 1m:10s (70 Seconds) to go exactly one (1) mile? I know it is simple math but I just can't seem to figure it out. Thank you, Douglas Sasso dougsasso@hotmail.com 1 solutions Answer 254449 by Fombitz(13828)   on 2010-10-14 16:43:59 (Show Source): You can put this solution on YOUR website! (1 mile/70 sec)*(3600 sec/1 hr)=51.4 mph

logarithm/356441: Logarithm Describe the difference between the graph of f(x) = log x^2 and g(x) = 2 log x Thank you for your help! 1 solutions Answer 254448 by Fombitz(13828)   on 2010-10-14 16:42:46 (Show Source): You can put this solution on YOUR website! . . . . . . .

logarithm/356443: Can you help me with this exercise, please? If $5000 is deposited today, at 6% compounded semi-annually, how much money will this account contain after five years? (Asume no further deposits or withdrawals have been made during the five-year period). Thank You! 1 solutions Answer 254447 by Fombitz(13828)   on 2010-10-14 16:37:40 (Show Source): You can put this solution on YOUR website! Interest: 6% annual would be 3% semiannually or 0.03. Time Period: There are 10 semiannual periods in 5 years. . . .

logarithm/356435: Would you help me? Thank you! Logarithm Write the inverse for the function of y+2=4^(x-1) in the form y=. 1 solutions Answer 254443 by Fombitz(13828)   on 2010-10-14 16:27:10 (Show Source): You can put this solution on YOUR website! To find the inverse, interchange the positions of x and y and then solve for the new y, that'll be the inverse.

logarithm/356432: Can you help me please? Graph: (x^2-2x-4)/(2x^2+x-3)=x Thank you! 1 solutions Answer 254441 by Fombitz(13828)   on 2010-10-14 16:24:59 (Show Source): You can put this solution on YOUR website! Do you mean ???