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Alan3354 answered: 30973 problems
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Sequences-and-series/701348: The sum of a number and 43 is 107. Find the number. Please let me know the steps you took to get the answer as well. Thank you! `Kelly 1 solutions Answer 432562 by Alan3354(30993)   on 2013-01-13 21:17:47 (Show Source): You can put this solution on YOUR website! The sum of a number and 43 is 107. Find the number. Please let me know the steps you took to get the answer as well. ----------- n = a number n + 43 = 107 Subtract 43 n = 64

Age_Word_Problems/701678: in 18 years, tiffany will be 3 times as old as she is right now. how old is she right now? 1 solutions Answer 432561 by Alan3354(30993)   on 2013-01-13 21:16:17 (Show Source): You can put this solution on YOUR website! in 18 years, tiffany will be 3 times as old as she is right now. how old is she right now? ------------- t = her age now t + 18 = 3t 2t = 18 t = 9 ---------- She's 9 now

Travel_Word_Problems/701731: im traveling 250 miles it takes me 5 hours to get there. whats my average speed? 1 solutions Answer 432560 by Alan3354(30993)   on 2013-01-13 21:14:26 (Show Source): You can put this solution on YOUR website! im traveling 250 miles it takes me 5 hours to get there. whats my average speed? ---------- d = r*t r = d/t

Expressions-with-variables/701335: Find the derivative of: If y (Y^3) - 4(x^2)y + 2(x^5) = 40 1 solutions Answer 432558 by Alan3354(30993)   on 2013-01-13 21:11:08 (Show Source): You can put this solution on YOUR website! Find the derivative of: If y (Y^3) - 4(x^2)y + 2(x^5) = 40 ========================== wrt x, I assume. y^3 - 4x^2y + 2x^5 = 40 3y^2dy - 4x^2dy - 8xydx + 10x^4dx = 0 3y^2dy - 4x^2dy = 8xydx - 10x^4dx (3y^2 - 4x^2)dy = (8xy - 10x^4)dx dy/dx = (10x^4 - 8xy)/(4x^2 - 3y^2)

Equations/701718: 54=-7(2-) 1 solutions Answer 432551 by Alan3354(30993)   on 2013-01-13 20:46:54 (Show Source): You can put this solution on YOUR website! 54=-7(2-) -- What?

Angles/701716: if one angle of the triangle is 45 degrees and the other is 35 degrees what is the third angle 1 solutions Answer 432550 by Alan3354(30993)   on 2013-01-13 20:46:14 (Show Source): You can put this solution on YOUR website! if one angle of the triangle is 45 degrees and the other is 35 degrees what is the third angle --------------------- The sum of the 3 angles = 180 degs

test/701727: How do you solve for y if there is no number in front of it. 1 solutions Answer 432548 by Alan3354(30993)   on 2013-01-13 20:44:38 (Show Source): You can put this solution on YOUR website! How do you solve for y if there is no number in front of it. ---------- Equations are solved. You'll see an equation with a y, and solve it for y.

Graphs/701629: How do I graph x2-y=0 1 solutions Answer 432503 by Alan3354(30993)   on 2013-01-13 18:05:59 (Show Source): You can put this solution on YOUR website! How do I graph x2-y=0 --------------- It's a straight line. Find 2 points, draw a line thru them.

Functions/701650: I need help with solving this problem: Directions: Let f(x)=x^2 and g(x)=3x+7. Find the following composites. #1. f(g(-2)) #2. f(g(x)) I have tried solving them over and over, but I keep getting the wrong answer. For #1 I get -2x^2. For #2 I get 3x^3+7x^2. I know those answers are not right and I need help, please! 1 solutions Answer 432502 by Alan3354(30993)   on 2013-01-13 18:05:03 (Show Source): You can put this solution on YOUR website! Let f(x)=x^2 and g(x)=3x+7. Find the following composites. #1. f(g(-2)) g(-2) = 3*-2+7 = 1 f(1) = 1 --------------- #2. f(g(x)) = f(3x+7) = 9x^2 + 42x + 49

Equations/701655: find all zeros of the polynomial function. g(x)=x^3-2x^2-x+2 1 solutions Answer 432501 by Alan3354(30993)   on 2013-01-13 18:02:21 (Show Source): You can put this solution on YOUR website! find all zeros of the polynomial function. g(x)=x^3-2x^2-x+2 -------------- Try x = 1 & x = 2, plus and minus first.

Exponents-negative-and-fractional/701649: how do you solve this equation (23245)^-1/3= 1 solutions Answer 432499 by Alan3354(30993)   on 2013-01-13 18:01:05 (Show Source): You can put this solution on YOUR website! how do you solve this equation (23245)^-1/3= --------------- Is the exponent -1? or -1/3? Either way, It's not an equation, there's no variable to solve for. It's the inverse of the cube root of 23245. ------- Do you have a calculator?

Trigonometry-basics/701644: find each angle measure to the nearest degree. Cos C=0.1564 1 solutions Answer 432498 by Alan3354(30993)   on 2013-01-13 17:54:15 (Show Source): You can put this solution on YOUR website! find each angle measure to the nearest degree. Cos C=0.1564 ----------------- Do you have a calculator?

Equations/701512: How to make x the subject. 1 solutions Answer 432453 by Alan3354(30993)   on 2013-01-13 13:46:07 (Show Source): You can put this solution on YOUR website! How to make x the subject. -------- How to make x the subject. Square both sides

test/701447: Make y the subject: 5x - y=8 1 solutions Answer 432431 by Alan3354(30993)   on 2013-01-13 10:45:49 (Show Source): You can put this solution on YOUR website! Make y the subject: 5x - y=8 ================ Add y Subtract 8

Travel_Word_Problems/701444: Gina drove 600 miles in 12 hours. How many miles per hour was she traveling? 1 solutions Answer 432430 by Alan3354(30993)   on 2013-01-13 10:44:57 (Show Source): You can put this solution on YOUR website! Gina drove 600 miles in 12 hours. How many miles per hour was she traveling? ------- d = r*t r = d/t

Travel_Word_Problems/701449: A driver drove at a speed of 52 mph for z hours, how far did he go? 1 solutions Answer 432429 by Alan3354(30993)   on 2013-01-13 10:44:02 (Show Source): You can put this solution on YOUR website! A driver drove at a speed of 52 mph for z hours, how far did he go? ------------- d = r*t

Numbers_Word_Problems/701431: Find the difference between 18 and the next odd number bigger than 7 1 solutions Answer 432409 by Alan3354(30993)   on 2013-01-13 08:35:40 (Show Source): You can put this solution on YOUR website! Find the difference between 18 and the next odd number bigger than 7 --------- The next odd number is 19, which is bigger than 7. The difference is 1.

Polynomials-and-rational-expressions/701440: Factor completely 4d^2+40d+100 1 solutions Answer 432408 by Alan3354(30993)   on 2013-01-13 08:34:11 (Show Source): You can put this solution on YOUR website! Factor completely 4d^2+40d+100 ==================== Factor out 4. The 2 end terms are squares, try that first.

Linear-systems/701300: How to solve the following using the substitution method showing your work? 3x-5y=61 3x-y=17 1 solutions Answer 432356 by Alan3354(30993)   on 2013-01-12 17:20:26 (Show Source): You can put this solution on YOUR website! 3x-5y=61 3x-y=17 ---> y = 3x - 17 Sub for y in the 1st eqn

test/701274: -8y-32 1 solutions Answer 432325 by Alan3354(30993)   on 2013-01-12 15:31:57 (Show Source): You can put this solution on YOUR website! -8y-32 -------- What about it?

Money_Word_Problems/701178: how much money must be invested at 11 and half percent interest compounded continiously to yield 3000 after 2 years 1 solutions Answer 432290 by Alan3354(30993)   on 2013-01-12 09:06:38 (Show Source): You can put this solution on YOUR website! how much money must be invested at 11 and half percent interest compounded continiously to yield 3000 after 2 years ---------------- FV = PV*e^rt PV = Present Value, amount in question. 3000 = PV*e^(0.115*2) PV = 3000*e^-0.23 PV = 2383.60

Quadratic_Equations/701180: Complete the table using the given values of x and the equation -2x – y = 1. Show your work. X Y -1 0 1 2 3 4 1 solutions Answer 432285 by Alan3354(30993)   on 2013-01-12 09:02:00 (Show Source): You can put this solution on YOUR website! Complete the table using the given values of x and the equation -2x – y = 1. Show your work. X Y -1 0 1 2 3 4 =============== y = -2x - 1 Sub the values for x, find y.

Angles/701081: solve for s A=1/5pi r squared 2s 1 solutions Answer 432278 by Alan3354(30993)   on 2013-01-12 08:25:12 (Show Source): You can put this solution on YOUR website! solve for s A=1/5pi r squared 2s ----------------- Your equation is not clear.

Money_Word_Problems/701174: how long will it take to produce 10000 from a 7000 investment at 8 percent compounded monthly? 1 solutions Answer 432277 by Alan3354(30993)   on 2013-01-12 08:22:37 (Show Source): You can put this solution on YOUR website! how long will it take to produce 10000 from a 7000 investment at 8 percent compounded monthly? ------------- 10000 = 7000*(1 + 8/12)^t, t in months (1 + 2/3)^t = 10/7 t*log(1 + 2/3) = log(10/7) t = log(10/7)/log(1 + 2/3) months

Functions/701062: State if: A. if it is exponential or decay B. the rate of growth or decay C. the y-intercept h(x)=6(3)^x 1 solutions Answer 432276 by Alan3354(30993)   on 2013-01-12 08:20:41 (Show Source): You can put this solution on YOUR website! State if: A. if it is exponential or decay It's growth, h(x) increases with x. ----------------- B. the rate of growth or decay h'(x) = 6*(3^x)*ln(x) C. the y-intercept h(0) = 6 ---------------- h(x)=6(3)^x

Average/701102: if i have a 73% on something worth 12% and a 45% on something worth 20% what is my mark? 1 solutions Answer 432275 by Alan3354(30993)   on 2013-01-12 08:16:44 (Show Source): You can put this solution on YOUR website! if i have a 73% on something worth 12% and a 45% on something worth 20% what is my mark? ------------ worth 12% of what? What mark?

Travel_Word_Problems/701109: The formula M = 2 t is used to determine how many miles M you can travel if you drive at a constant rate 2 miles per minute and it takes you t minutes. a) Determine how far you can travel in 13 minutes. b) M = 2t , solve for t 1 solutions Answer 432274 by Alan3354(30993)   on 2013-01-12 08:15:37 (Show Source): You can put this solution on YOUR website! The formula M = 2 t is used to determine how many miles M you can travel if you drive at a constant rate 2 miles per minute and it takes you t minutes. a) Determine how far you can travel in 13 minutes. M = 2t Multiply it. =============== b) M = 2t , solve for t Divide by 2

Mixture_Word_Problems/701112: to prepare 500 ml of alcohol 20% using alcohol 70% and water. How many milliliters of each are needed? 1 solutions Answer 432260 by Alan3354(30993)   on 2013-01-12 07:32:44 (Show Source): You can put this solution on YOUR website! to prepare 500 ml of alcohol 20% using alcohol 70% and water. How many milliliters of each are needed? ------------------- 500 ml of 20% = 100 ml of alcohol 100 ml/0.7 = 142.9 ml of 70% The rest is water.

Rectangles/701161: find the dimensions of the rectangle field if it has a perimeter of 140 meter and an area if 1200 square meters. 1 solutions Answer 432258 by Alan3354(30993)   on 2013-01-12 07:27:26 (Show Source): You can put this solution on YOUR website! find the dimensions of the rectangle field if it has a perimeter of 140 meter and an area if 1200 square meters. -------------- P = 2L + 2W = 140 L + W = 70 L*W = 1200 --------- Find 2 factors of 1200 with a sum of 70.

Numbers_Word_Problems/701144: What is the difference between the sum of all postive odd integers less than 102 and the sum of all positive even integers less than 102 ? 1 solutions Answer 432255 by Alan3354(30993)   on 2013-01-12 07:12:45 (Show Source): You can put this solution on YOUR website! What is the difference between the sum of all postive odd integers less than 102 and the sum of all positive even integers less than 102 ? ========== --> 1 to 101 ------------- The sum of 51 odd numbers = 51^2 = 2601 ------- The sum of all numbers from 1 to 101 = 5151 -------- Evens = 5151 - 2601 = 2550

Linear-equations/701051: please what is the integral of (x^x) and the integral of (ar cos (x) ) in steps 1 solutions Answer 432248 by Alan3354(30993)   on 2013-01-12 06:41:02 (Show Source): You can put this solution on YOUR website! email me via the Thank You note and I'll send it. --------------------------------------------------------------------------------