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Alan3354 answered: 31497 problems
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Numbers_Word_Problems/509479: 2x?=112 1 solutions Answer 341460 by Alan3354(31518)   on 2011-10-04 19:02:54 (Show Source): You can put this solution on YOUR website! Divide by 2

Expressions-with-variables/509431: I am stuck on a problem. My algebra teacher told us that we have to check it and show all our work and steps, and I can't get it right. 2(x-5+3x)=14 I've tried... 2(x-5+3x)=14 2x-10+6x=14 2x-2x-10+6x-2x=14 -10+4x=14 -10+10+4x=14+10 4x=24 4x/4=24/4 x=6 Then, when I check it I must be doing it wrong or don't have the right answer. 2(6-5+3*6)=14 12-10+6*12=14 12-10+72=14 2+72=14 74=14 It's supposed to be 14 on both sides, but I do not understand it. All of my other problems I got right, but I just for some reason do not understand this question. Please help me as soon as possible, thanks. 1 solutions Answer 341452 by Alan3354(31518)   on 2011-10-04 18:19:09 (Show Source): You can put this solution on YOUR website! 2(x-5+3x)=14 I've tried... 2(x-5+3x)=14 2x-10+6x=14 2x-2x-10+6x-2x=14 ---------- You subtracted 2x from the left side, but not the right side. ---------- 2(x-5+3x)=14 Divide by 2 (x-5+3x) = 7 4x-5 = 7 Add 5 4x = 12 x = 3

Equations/509353: how to solve y+5-4y= -10 1 solutions Answer 341447 by Alan3354(31518)   on 2011-10-04 18:08:52 (Show Source): You can put this solution on YOUR website! Collect terms. Isolate y

Percentage-and-ratio-word-problems/509407: A right of way 10 feet wide and 54 feet long is approximately what percent of a 1/4 acre? (a) 1% (b) 3% (c) 5% (d) 7% 1 solutions Answer 341445 by Alan3354(31518)   on 2011-10-04 18:07:13 (Show Source): You can put this solution on YOUR website! 10*54 = 540 sq ft -------- 1/4 acre = 10890 sq ft

test/509375: What number does the tryandgal Stand for 13=6+ 1 solutions Answer 341437 by Alan3354(31518)   on 2011-10-04 17:54:13 (Show Source): You can put this solution on YOUR website! Not sure what you mean, but 13 = 6 + 7 Is that your question? Did you not know that? -------------- The site is algebra.com, not kindergarten.

Surface-area/509338: Suppose you are standing in the center of castle garden and you walk toward a walll. How far will you walk? 1 solutions Answer 341432 by Alan3354(31518)   on 2011-10-04 17:49:05 (Show Source): You can put this solution on YOUR website! No idea. Do you walk to the wall, or just toward it? ----------- Why is a duck so much alike?

Travel_Word_Problems/509365: How far will a bike traveling 7 k/h go in 4 hours? 1 solutions Answer 341429 by Alan3354(31518)   on 2011-10-04 17:46:58 (Show Source): You can put this solution on YOUR website! d = r*t Distance = rate (or speed) multiplied by time.

Quadratic_Equations/509391: plese help me anwer this question i willput down the answer i originally recived but need to know if it is right or not if it is not please help me to get it right....x^2+11=6x it has to be facotred i think or solved this is what i got so far (x-3)^2+2=0 x^2-6x+11=0 -1/2(x-3)^2=1 is this right or not...i am not sure of it! 1 solutions Answer 341415 by Alan3354(31518)   on 2011-10-04 17:30:57 (Show Source): You can put this solution on YOUR website! plese help me anwer this question i willput down the answer i originally recived but need to know if it is right or not if it is not please help me to get it right....x^2+11=6x ------------ First, that's not a question, it's an equation. I'll assume you want to solve it for x. x^2+11=6x It can't be factored, but you can complete the square. and x = 3 +/- i*sqrt(2) --------------------- Another method: 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 : . The discriminant -8 is less than zero. That means that there are no solutions among real numbers. If you are a student of advanced school algebra and are aware about imaginary numbers, read on. In the field of imaginary numbers, the square root of -8 is + or - . The solution is , or Here's your graph: ----------

Expressions-with-variables/509314: how did you get the 165 1 solutions Answer 341387 by Alan3354(31518)   on 2011-10-04 15:53:53 (Show Source): You can put this solution on YOUR website! What 165?

Evaluation_Word_Problems/509301: If a ball is hit upward at 80 ft per second, then its approximate height, in meters, t seconds later is given by h(t) = 80t − 16t2. When does the ball hit the ground? 1 solutions Answer 341385 by Alan3354(31518)   on 2011-10-04 15:52:19 (Show Source): You can put this solution on YOUR website! If a ball is hit upward at 80 ft per second, then its approximate height, in meters, t seconds later is given by h(t) = 80t − 16t2. When does the ball hit the ground? ---------------- That's the height in feet, not meters. It hits the ground when h = 0 h(t) = 80t - 16t^2 = 0 80 = 16t t = 5 seconds ----------- h(t) = 0 at t = 0 also, when the ball is "launched"

Polynomials-and-rational-expressions/509309: what is the simplest way of solving polynomials? because its all a foreign language to me. 1 solutions Answer 341383 by Alan3354(31518)   on 2011-10-04 15:47:52 (Show Source): You can put this solution on YOUR website! Polynomials are not solved. Equations are solved.

logarithm/509288: It's been a while since I've done one of these. Any help will be appreciated. Simplify: log 3 3^2 + log 5 5^3 - log 2 2^4 It may have something to do with the change of base formula. 1 solutions Answer 341379 by Alan3354(31518)   on 2011-10-04 15:32:22 (Show Source): You can put this solution on YOUR website! log 3 3^2 + log 5 5^3 - log 2 2^4 ----------- Each term matches its log base.

Travel_Word_Problems/509220: if a plane travel 9 and a half miles ever minute, How many miles will the plane travel in 30minutes 1 solutions Answer 341378 by Alan3354(31518)   on 2011-10-04 15:28:21 (Show Source): You can put this solution on YOUR website! d = r*t

Quadratic_Equations/509273: 5. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x + 8y = 16 -2x + 5y = 55 please help! 1 solutions Answer 341371 by Alan3354(31518)   on 2011-10-04 15:04:01 (Show Source): You can put this solution on YOUR website! Divide the 1st equation by 2, then add them.

Linear-equations/509274: can you please tell me how to write an equation of a line that has the x-intecept5 and y-intercept 2? thank you 1 solutions Answer 341370 by Alan3354(31518)   on 2011-10-04 14:56:11 (Show Source): You can put this solution on YOUR website! If it's (A,0) and (0,B), --> Ax + By = A*B ----------- 2x + 5y = 10

test/509253: T=1-(m+n) solve for n 1 solutions Answer 341368 by Alan3354(31518)   on 2011-10-04 14:40:06 (Show Source): You can put this solution on YOUR website! Eliminate the parentheses, isolate n.

test/509251: K=x-(y-1) solve for y 1 solutions Answer 341367 by Alan3354(31518)   on 2011-10-04 14:39:18 (Show Source): You can put this solution on YOUR website! Eliminate the parentheses, isolate y.

test/509248: I need help with linear equations E=v+f-2 solve for f 1 solutions Answer 341366 by Alan3354(31518)   on 2011-10-04 14:36:56 (Show Source): You can put this solution on YOUR website! duplicate

test/509254: 3b+y=b solve for y 1 solutions Answer 341365 by Alan3354(31518)   on 2011-10-04 14:34:09 (Show Source): You can put this solution on YOUR website! Subtract 3b

test/509249: I need help with linear equations E=v+f-2 solve for f 1 solutions Answer 341364 by Alan3354(31518)   on 2011-10-04 14:30:15 (Show Source): You can put this solution on YOUR website! What sort of help?

test/509257: Y=kx solve for x 1 solutions Answer 341361 by Alan3354(31518)   on 2011-10-04 14:26:51 (Show Source): You can put this solution on YOUR website! Divide by k

test/509255: Ax=b solve for x 1 solutions Answer 341360 by Alan3354(31518)   on 2011-10-04 14:26:09 (Show Source): You can put this solution on YOUR website! Divide by A

Triangles/509160: lenthgs of an isoscels triangle are 2x+5, 3x-6, and 3x-6 find the sides 1 solutions Answer 341344 by Alan3354(31518)   on 2011-10-04 13:43:20 (Show Source): You can put this solution on YOUR website! not enough info

Angles/509221: If the sum of all in a angles in a triangle is 180, what is the measure of Angle H? 1 solutions Answer 341343 by Alan3354(31518)   on 2011-10-04 13:35:43 (Show Source): You can put this solution on YOUR website! Who knows?

test/509233: The area A of a triangle with base b and height h is given by A= 1/2bh Find the area when b= 16 m (meters) and h= 22m 1 solutions Answer 341342 by Alan3354(31518)   on 2011-10-04 13:33:59 (Show Source): You can put this solution on YOUR website! Area = b*h/2 b = 16, h = 22 Calculate it.

Length-and-distance/509227: I need to understand how to work the following problem in a section of my college algebra book called coordinate geometry and graphing techniques: Find x if the line through (-2,4) and (x,7) has a slope of 2/9. Thanks. 1 solutions Answer 341340 by Alan3354(31518)   on 2011-10-04 13:29:58 (Show Source): You can put this solution on YOUR website! Find x if the line through (-2,4) and (x,7) has a slope of 2/9. ---------- Slope, m, is the diffy/diffx = 2/9 ------ 2/9 = (4-7)/(-2-x) = 3/(2+x) 2(2+x) = 3*9 4+2x = 27 x = 23/2

Equations/509190: Please help me solve. Mom and pop played 28 games of Canasta. Mom won 6 more games than pop. How many games did mom win? 1 solutions Answer 341323 by Alan3354(31518)   on 2011-10-04 12:07:07 (Show Source): You can put this solution on YOUR website! p = games Pop won ------ p + (p+6) = 28 p = 11 m = 17 games won by Mom

Numbers_Word_Problems/509194: Two pages that face each other in a book have 288 as the sum of their page numbers. What are the page numbers? 1 solutions Answer 341322 by Alan3354(31518)   on 2011-10-04 12:05:10 (Show Source): You can put this solution on YOUR website! Two pages that face each other in a book have 288 as the sum of their page numbers. What are the page numbers? ---------- 143 + 144 = 287 144 + 145 = 289 -------------- They have to be 143.5 & 144.5, the new method of page numbering. It's not possible with integers.

Triangles/509143: Good evening, My questions to you are: 1. Find the missing side (C) of a right triangle that has a side (A) of 7 inches and a side (B) of 8 inches.. 2. What is the surface area of a gas chamber that measures 13 feet wide, 13 feet high, and 13 feet long. 3. Find the volume of a cylindrical water tank that has a radius of 7.5 feet and a height of 30 feet. Thank you, LCpl Fisher 1 solutions Answer 341318 by Alan3354(31518)   on 2011-10-04 11:41:17 (Show Source): You can put this solution on YOUR website! duplicate

Equations/509172: Please help me Find the value of 'a' so the equation 4x-3a=2(x+a) has the solution x=10 1 solutions Answer 341317 by Alan3354(31518)   on 2011-10-04 11:39:42 (Show Source): You can put this solution on YOUR website! Find the value of 'a' so the equation 4x-3a=2(x+a) has the solution x=10 --------- Sub 10 for x, solve for a. 4x-3a=2(x+a) 4*10 - 3a = 2(10-a) 40 - 3a = 20 - 2a a = 20

Linear-equations/509185: Find the equation of a line passing through the pair of points. Write the equation in slope intercept form. The points are (2,1) and (10,-31) 1 solutions Answer 341315 by Alan3354(31518)   on 2011-10-04 11:29:04 (Show Source): You can put this solution on YOUR website! Find the equation of a line passing through the pair of points. Write the equation in slope intercept form. The points are (2,1) and (10,-31) ------------ The hard way: Find the slope, m = diffy/diffx = (-31-1)/(10-2) = -32/8 m = -4 --------- Use y = mx+b and either point to find b 1 = -4*2 + b b = 9 --> y = -4x + 9 ------------- Easier way: --- |+x +y +1| |+2 +1 +1| = 0 |10 -31 1| --------- x(1+31) - y(2-10) + (-62-10) = 0 32x + 8y = 72 4x + y = 9 y = -4x + 9