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# Recent problems solved by 'Alan3354'

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 logarithm/550631: Convert to an exponential equation. log7 343 = 31 solutions Answer 358914 by Alan3354(30993)   on 2011-12-28 10:34:56 (Show Source): You can put this solution on YOUR website!The log is the exponent. ------ Which of the numbers is the other to the 3rd power?
 Inequalities/550630: Find the value of q in the inequality ; 5q + 5 > -201 solutions Answer 358913 by Alan3354(30993)   on 2011-12-28 10:33:46 (Show Source): You can put this solution on YOUR website!Find the value of q in the inequality ; 5q + 5 > -20 ------- Subtract 5, then divide by 5.
 Average/550623: simplify, please show all of your work. write your final answer exactly as a fraction in lowest terms. 114/1231 solutions Answer 358912 by Alan3354(30993)   on 2011-12-28 10:32:39 (Show Source): You can put this solution on YOUR website! 114/123 -------- Divide by 3
 absolute-value/550629: what is absolute value1 solutions Answer 358911 by Alan3354(30993)   on 2011-12-28 10:23:58 (Show Source): You can put this solution on YOUR website!what is absolute value ------ It's the magnitude, or size of the expression. It's the distance from zero. ------ eg |-4| = 4 |4| = 4 ---------- The absolute value is always positive. ------ |x| = 3 has 2 solutions x = -3 and x = 3 |-3| = 3 and |3| = 3 ---------- |z| = -5 has no solutions, the ABS cannot be negative.
 Mixture_Word_Problems/550628: if a tank holds 100Gallons with a mix of 60% water and 40%oil , how many gallons of oil does tank contain?1 solutions Answer 358910 by Alan3354(30993)   on 2011-12-28 10:22:17 (Show Source): You can put this solution on YOUR website!if a tank holds 100Gallons with a mix of 60% water and 40%oil , how many gallons of oil does tank contain? ------ 40% of 100 gal = (40/100)*100 = 0.4*100 = 40 gallons
 Quadratic_Equations/550607: evaluate x^3 when x=51 solutions Answer 358909 by Alan3354(30993)   on 2011-12-28 10:21:01 (Show Source): You can put this solution on YOUR website!evaluate x^3 when x=5 --------- =
 Triangles/550618: is it possible to construct a triangle with lengths of 7ft,12ft,and 20ft? 1 solutions Answer 358908 by Alan3354(30993)   on 2011-12-28 10:18:30 (Show Source): You can put this solution on YOUR website!is it possible to construct a triangle with lengths of 7ft,12ft,and 20ft? ---- No. It's instructive to cut some straws or strings and see why not. Make them inches or cm, not feet, if you have limited space.
 Travel_Word_Problems/550625: Suppose the tip of the minute hand of a clock is two inches from the center of the clock. For each of the following durations, determine the distance traveled by the tip of the minute hand. Question 1: 15 minutes and Question 2: 10 and a half hours. Not sure at all how to approach this problem. 1 solutions Answer 358907 by Alan3354(30993)   on 2011-12-28 10:16:27 (Show Source): You can put this solution on YOUR website!Suppose the tip of the minute hand of a clock is two inches from the center of the clock. For each of the following durations, determine the distance traveled by the tip of the minute hand. -------- r = 2 inches The minute hand's tip travels 1 rev/hr = 2*pi*r inches = 4pi inch/hr --------- Question 1: 15 minutes 15 mins = 1/4 hr d = (1/4)*4pi = pi inches ------------- and Question 2: 10 and a half hours. d = 10.5*4pi = 42pi inches
 Length-and-distance/550560: solve m1 solutions Answer 358903 by Alan3354(30993)   on 2011-12-28 08:52:55 (Show Source): You can put this solution on YOUR website!not much info.
 Linear_Equations_And_Systems_Word_Problems/550588: I deside to buy my friends some tickets to see a film they cost £4.50 each i hve £30.00 on me how many friends can i get tickits for? 1 solutions Answer 358893 by Alan3354(30993)   on 2011-12-28 06:39:12 (Show Source): You can put this solution on YOUR website!I deside to buy my friends some tickets to see a film they cost £4.50 each i hve £30.00 on me how many friends can i get tickits for? ------- 30/4.5 = 6.6667 --> 6 tix
 Equations/550510: 2 2 2 35in x (2.54 cm) x (1m) -------- -------- 2 ------ 2 1 (1 in) (100 cm) 1 solutions Answer 358891 by Alan3354(30993)   on 2011-12-28 06:38:04 (Show Source): You can put this solution on YOUR website!What does that mean? ----- 35 in = 35*2.54 cm = 35*2.54/100 meters What are the 2's about?
 Mixture_Word_Problems/550561: A chemist is mixing a solution that is 2% acid and another solution that is 8% acid. He needs to make 75 mL of a solution that is 5% acid. How much of each solution should he use?1 solutions Answer 358844 by Alan3354(30993)   on 2011-12-27 22:04:12 (Show Source): You can put this solution on YOUR website!A chemist is mixing a solution that is 2% acid and another solution that is 8% acid. He needs to make 75 mL of a solution that is 5% acid. How much of each solution should he use? --------- 5% is the average of 2% and 8%, so it's equal amounts.
 test/550538: (csc(x)-1)/(1-sin(x))=csc(x)1 solutions Answer 358843 by Alan3354(30993)   on 2011-12-27 22:03:18 (Show Source): You can put this solution on YOUR website!(csc(x)-1)/(1-sin(x))=csc(x) ------- Multiply thru by sin(x)
 Money_Word_Problems/550559: what is the correct decimal conversion? Catarina has a savings account that pays 3.2% interest compounded annually. She intends to withdraw \$1000 each year for the next 7 years, beginning a year from now. 3.2/365=0.00876 pv= A/1+i)^n 1000/(1.000876)^1 =999.12 I'm uncertain when converting to decimal. I don't understand the number of 0's needed. Taly and Marc open a Registered Home Ownership Savings Plan that pays 6% interest compounded semi-annually. For years, they invest \$500 every 6 months in the plan. Determine the amount of interest they earn. 2/6.0%=0.3333 decimal form 1.03 A= P(1+i)^n A=500(1.003)^1 501.5 500(1.003)^2 503 I'm experiencing the same problem with this question. There is a level of uncertainty when it comes to placing decimals. 1 solutions Answer 358842 by Alan3354(30993)   on 2011-12-27 22:00:25 (Show Source): You can put this solution on YOUR website!what is the correct decimal conversion? Catarina has a savings account that pays 3.2% interest compounded annually. She intends to withdraw \$1000 each year for the next 7 years, beginning a year from now. 3.2/365=0.00876 ********** You're finding the daily interest, when it's compounded annually. Don't divide by 365. ------------------- pv= A/1+i)^n 1000/(1.000876)^1 =999.12 I'm uncertain when converting to decimal. I don't understand the number of 0's needed. ---------- You didn't say what you want to solve for. ------------------ Taly and Marc open a Registered Home Ownership Savings Plan that pays 6% interest compounded semi-annually. For years, they invest \$500 every 6 months in the plan. Determine the amount of interest they earn. 2/6.0%=0.3333 ********* You divided 2 by 6, should be 6/2 = 3 6% per year = 3% semi-annually. -------------- decimal form 1.03 *********** 1.03 is correct, tho. 3% = 0.03 A= P(1+i)^n A=500(1.003)^1 ****** Then you made it 1.003. should be 1.03 501.5 500(1.003)^2 503 I'm experiencing the same problem with this question. There is a level of uncertainty when it comes to placing decimals. ----------- "For years, they invest \$500 every 6 months..." ********* You have to specify how many years. And, you have to account for the \$500 deposits, too. 500*(1.03)^n gives the Future Value, but doesn't include the \$500 deposits.
 Travel_Word_Problems/550529: If I'm running 10mph, how many seconds will it take to reach 90 ft? 1 solutions Answer 358829 by Alan3354(30993)   on 2011-12-27 19:49:56 (Show Source): You can put this solution on YOUR website!If I'm running 10mph, how many seconds will it take to reach 90 ft? --------- 10 mi/hr = 44/3 ft/sec (you can confirm that if you like) ------ 90 ft/(44/3) ft/sec = 270/44 seconds =~ 6.136 seconds
 Trigonometry-basics/550532: Find the angular velocity in rps of the second hand of a clock Express answer in terms of pi.1 solutions Answer 358828 by Alan3354(30993)   on 2011-12-27 19:47:36 (Show Source): You can put this solution on YOUR website!Find the angular velocity in rps of the second hand of a clock Express answer in terms of pi. -------- It makes one revolution per minute. = 2pi radians/minute
 Finance/550507: Jessica has 81% more money today than she did this time last year. If Jessica has \$94 today, how much money did she make over this past year? 1 solutions Answer 358818 by Alan3354(30993)   on 2011-12-27 18:17:19 (Show Source): You can put this solution on YOUR website!Jessica has 81% more money today than she did this time last year. If Jessica has \$94 today, how much money did she make over this past year? ------------ You have to define the relationship between the money she made and the money she has.
 Numeric_Fractions/550427: If 2(x -1) = 14, then x =1 solutions Answer 358728 by Alan3354(30993)   on 2011-12-27 11:35:56 (Show Source): You can put this solution on YOUR website!If 2(x -1) = 14, then x = ------------- Divide by 2. Add 1.
 Quadratic_Equations/550395: Can you show me the sign and how to solver the equation by analysis into the sum of square? 1 solutions Answer 358726 by Alan3354(30993)   on 2011-12-27 11:34:06 (Show Source): You can put this solution on YOUR website!Can you show me the sign and how to solver the equation by analysis into the sum of square? -------------- I don't know what that means.
 logarithm/550415: Simplify log10 101 solutions Answer 358722 by Alan3354(30993)   on 2011-12-27 11:04:03 (Show Source): You can put this solution on YOUR website!Simplify log10 10 = log(10) - the default base is 10. log(10) = 1 --------- The log of anything to its base = 1. for n>0
 logarithm/550414: Simplify log8 321 solutions Answer 358721 by Alan3354(30993)   on 2011-12-27 11:01:56 (Show Source): You can put this solution on YOUR website!Simplify log8 32 ------------ This is not as simple as the previous problems. and --- = ---------------- You can use the base change formula, too. = 5/3 same answer
 Functions/550413: please help solve to find the function values f(x) = 7x^2 + 10x -3, f(-6) =1 solutions Answer 358720 by Alan3354(30993)   on 2011-12-27 10:58:15 (Show Source): You can put this solution on YOUR website!please help solve to find the function values f(x) = 7x^2 + 10x -3, f(-6) = --------------- f(x) = 7x^2 + 10x -3 Sub -6 for x. ----------- It's evaluating, not solving. You're not solving for anything.
 logarithm/550412: Simplify log9 1/7291 solutions Answer 358719 by Alan3354(30993)   on 2011-12-27 10:56:34 (Show Source): You can put this solution on YOUR website! Simplify log9 1/729 --------------
 Linear-systems/550398: 8x3y3 divided by 2x-y1 solutions Answer 358718 by Alan3354(30993)   on 2011-12-27 10:54:09 (Show Source): You can put this solution on YOUR website!8x3y3 divided by 2x-y -------- = Nothing can be done with that.
 logarithm/550411: simplify log6 1/361 solutions Answer 358717 by Alan3354(30993)   on 2011-12-27 10:52:56 (Show Source): You can put this solution on YOUR website!simplify log6 1/36 --------- Hint:
 logarithm/550410: simplify log2 1/21 solutions Answer 358716 by Alan3354(30993)   on 2011-12-27 10:51:24 (Show Source): You can put this solution on YOUR website!simplify log2 1/2 --------- ----------- The log is the exponent.
 Trigonometry-basics/550364: Solve the equation tan²3Θ = cot²a1 solutions Answer 358715 by Alan3354(30993)   on 2011-12-27 10:47:39 (Show Source): You can put this solution on YOUR website!Solve for what?
 absolute-value/550403: Evaluate the equation for each of following problems. 4. x = -4 5. x = 14 5. x = -91 solutions Answer 358714 by Alan3354(30993)   on 2011-12-27 10:45:31 (Show Source): You can put this solution on YOUR website!Evaluate the equation for each of following problems. 4. x = -4 5. x = 14 5. x = -9 ---------------- What is it you want to do?
 test/550404: What is three times two1 solutions Answer 358713 by Alan3354(30993)   on 2011-12-27 10:44:31 (Show Source): You can put this solution on YOUR website!What is three times two ---------- not much.
 Circles/550406: Find the equation of the circle concentric with the circle x2+y2+6x-10y+33=0 and touching the line y-01 solutions Answer 358712 by Alan3354(30993)   on 2011-12-27 10:43:41 (Show Source): You can put this solution on YOUR website!Find the equation of the circle concentric with the circle x2+y2+6x-10y+33=0 and touching the line y-0 ----------------- I think you mean y=0 --- Find the center of the circles. x2+y2+6x-10y+33=0 Complete the squares for x and y x2+y2+6x-10y = -33 The center is (-3,5) The distance to y = 0 (the x-axis) is 5. -->
 Surface-area/550409: Find the area of the triangle who sides measures 18.5 cm,14.1 cm,13 cm, 12 cm1 solutions Answer 358711 by Alan3354(30993)   on 2011-12-27 10:39:11 (Show Source): You can put this solution on YOUR website!Find the area of the triangle who sides measures 18.5 cm,14.1 cm,13 cm, 12 cm ----------- Too many sides for a triangle.