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Recent problems solved by 'richwmiller'

richwmiller answered: 9132 problems
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Quadratic_Equations/611559: 4n^2+25=-20x I need to find the value of the discriminant as well as I need to state the number and types of roots/solutions/zeros. Thanks a lot-I am so confused!!! anonymous 1 solutions Answer 385021 by richwmiller(9143)   on 2012-05-16 09:28:17 (Show Source): You can put this solution on YOUR website! So what have you tried? What is the determinant? What does it tell us?

Human-and-algebraic-language/611521: Jim has 100 dimes and quarters the total is 14.05 how many quarters does the 1 solutions Answer 385019 by richwmiller(9143)   on 2012-05-16 09:26:26 (Show Source): You can put this solution on YOUR website! d+q=100 10d+25q=1405

test/611533: I need help bad 1 solutions Answer 385017 by richwmiller(9143)   on 2012-05-16 09:23:22 (Show Source): You can put this solution on YOUR website! Yes, you do.

Surface-area/611512: Plz help me 1 solutions Answer 385014 by richwmiller(9143)   on 2012-05-16 09:20:48 (Show Source): You can put this solution on YOUR website! Don't submit a problem more than once in 24 hours.

Matrices-and-determiminant/611552: What is the vertex of the parabola defined by--- 1 solutions Answer 385012 by richwmiller(9143)   on 2012-05-16 09:14:44 (Show Source): You can put this solution on YOUR website! no similar problems

Graphs/611553: What is the vertex of the parabola defined by--- y=-2(x+3)^2+5 The answer choices are; A. (-3,5) B. (-3,-5) C. (3,5) D. (3,-5) 1 solutions Answer 385011 by richwmiller(9143)   on 2012-05-16 09:13:29 (Show Source): You can put this solution on YOUR website! no similar problems

Rate-of-work-word-problems/611535: Adam, Beth, and Cory (working together) can paint a room in 6 hours less time than Adam working alone, one hour less than Beth working alone, and one-half the time needed for Cory working alone. How long would it take Adam and Beth to paint the room working together (but without Cory)? 1 solutions Answer 385010 by richwmiller(9143)   on 2012-05-16 09:11:21 (Show Source): You can put this solution on YOUR website! x/a+x/b+x/c=1 a=x+6 b=x+1 c=2x y/a+y/b=1 a=20/3 b=5/3 c=4/3 x=2/3 y=4/3 4/3 hour for Adam and Beth working together.

Linear-systems/611280: Please answer immediately, I need this by Friday.:) 1 solutions Answer 384882 by richwmiller(9143)   on 2012-05-15 14:24:55 (Show Source): You can put this solution on YOUR website! Everyone is in a hurry. What makes your problem special? Submit one problem at a time.

Quadratic-relations-and-conic-sections/611277: Graph: 1 solutions Answer 384881 by richwmiller(9143)   on 2012-05-15 14:22:48 (Show Source): You can put this solution on YOUR website! one problem per post no similar problems

Mixture_Word_Problems/611246: You sold a total of 200 tickets to a fundraiser. 1 solutions Answer 384872 by richwmiller(9143)   on 2012-05-15 13:08:25 (Show Source): You can put this solution on YOUR website! No similar problems

Rational-functions/611249: 1. Write an equation for the line in point-slope form. 1 solutions Answer 384870 by richwmiller(9143)   on 2012-05-15 13:04:47 (Show Source): You can put this solution on YOUR website! one problem at a time. no similar problems limit 5 problems per day.

absolute-value/611225: |x+3|=9 1 solutions Answer 384868 by richwmiller(9143)   on 2012-05-15 13:02:19 (Show Source): You can put this solution on YOUR website! you posted this twice. Don't post in two or more categories.

Numeric_Fractions/611243: I can not find the answer to this problem. solve using addition and multipication principle 8/35x=-32/63 I tried it but got lost. (-63/32)*(32/63)=8/35*32/63 thanks 1 solutions Answer 384865 by richwmiller(9143)   on 2012-05-15 12:56:11 (Show Source): You can put this solution on YOUR website! Try page 421 and turn left.

Rate-of-work-word-problems/611239: A man binds 112 books in one day and his assistant works one quarter as fast.how many days would it take them to bind 560 books,if each works alone on alternate days? 1 solutions Answer 384864 by richwmiller(9143)   on 2012-05-15 12:53:37 (Show Source): You can put this solution on YOUR website! 1/4*112=28 112+28=140 4*140=560 4 days each working alternate days

Numbers_Word_Problems/611020: How do I set this up? Four times the sum of twice the number and 7 exceeds the value of the number by 70. I know the first part is 4(2n+7) but then I get to the exceeds and I get very confused. 1 solutions Answer 384721 by richwmiller(9143)   on 2012-05-14 21:36:27 (Show Source): You can put this solution on YOUR website! 4(2n+7)=n+70

Rate-of-work-word-problems/611021: Jill can paint a french in eight hours. Stefan can paint the same fence in ten hours. How long would it take them if they worked together? 1 solutions Answer 384715 by richwmiller(9143)   on 2012-05-14 21:28:52 (Show Source): You can put this solution on YOUR website! What is a french? Anything like a fence? x/8+x/10=1 10x+8x=80 18x=80 9x=40 x=40/9

Polynomials-and-rational-expressions/611008: Factor completely Remember to look first for a common factor. Check by multiplying. If a polynomial is prime, state this. 2x^3 - 40x^2 + 192x 1 solutions Answer 384713 by richwmiller(9143)   on 2012-05-14 21:26:13 (Show Source): You can put this solution on YOUR website! 2x^3 - 40x^2 + 192x 2x*(x-20x+96) 2x*(x-12)(x-8)

Polygons/611010: what is a polygon 1 solutions Answer 384702 by richwmiller(9143)   on 2012-05-14 21:05:24 (Show Source): You can put this solution on YOUR website! look in your book.

real-numbers/610752: Turn 80% into a fraction in it's lowest terms 1 solutions Answer 384601 by richwmiller(9143)   on 2012-05-14 13:50:38 (Show Source): You can put this solution on YOUR website! 80/100=8/10=4/5

Numbers_Word_Problems/610789: Which are those more of: buns in a dozen baker's dozen or hours in a week? 1 solutions Answer 384599 by richwmiller(9143)   on 2012-05-14 13:46:41 (Show Source): You can put this solution on YOUR website! already answered. hours =24*7=12*14 buns=12*13

Average/610746: John drove a car at 50 miles per hour for 3 hour and at 60 miles per hour for 2 hour find its average speed 1 solutions Answer 384597 by richwmiller(9143)   on 2012-05-14 13:42:09 (Show Source): You can put this solution on YOUR website! (3*50+2*60)/5

Sequences-and-series/610800: what is the next numbers in a series of 3,9,21,46,91,163, 269 1 solutions Answer 384596 by richwmiller(9143)   on 2012-05-14 13:39:35 (Show Source): You can put this solution on YOUR website! 416

Polynomials-and-rational-expressions/610810: Factor the polynomial 20a^3 b^2-35a^7 b^5+60a^2 b 1 solutions Answer 384593 by richwmiller(9143)   on 2012-05-14 13:36:53 (Show Source): You can put this solution on YOUR website! -5 a^2 b (7 a^5 b^4-4 a b-12)

Percentage-and-ratio-word-problems/610776: What is the cash discount of 3% on the final COGS $461935? I am looking for the number that we take the 3% from and end up with a final amount of $461,935? 1 solutions Answer 384589 by richwmiller(9143)   on 2012-05-14 13:30:19 (Show Source): You can put this solution on YOUR website! .97x=461935 x is the original amount.

Matrices-and-determiminant/610756: IT WOULD BE MUCH APPRECIATED IF I GOT HELP ON THESE 3 QUESTIONS I JUST SIMPLY DO NOT GET. PLEASE HELP ME. THANK YOU IN ADVANCE. 1 solutions Answer 384588 by richwmiller(9143)   on 2012-05-14 13:29:07 (Show Source): You can put this solution on YOUR website! One question at a time and no similar problems.

Parallelograms/610411: Please, how do you calculate the angle of a parallelogram on a grid. 1 solutions Answer 384388 by richwmiller(9143)   on 2012-05-13 11:29:14 (Show Source): You can put this solution on YOUR website! carefully

Volume/610425: I have to find out which bag of food is the better buy. I tried to solve the problem, but I don't think it is correct Can you check? Weight Bag Size (radius x height) Cost per Bag 4 lb bag 4.5x11 $10.88 15 lb bag 6.5x15 $29.69 35 lb bag 9x23 $52.46 1 solutions Answer 384387 by richwmiller(9143)   on 2012-05-13 11:25:11 (Show Source): You can put this solution on YOUR website! Size of the bag has nothing to do with cost efficiency. Price per pound is what you want. 10.88/4.5=2.4177 $2.42 per pound 29.69/15=1.979=$1.98 per lb. 52.46/35=1.4988=$1.50 per lb.

test/610429: 1 solutions Answer 384385 by richwmiller(9143)   on 2012-05-13 11:18:40 (Show Source): You can put this solution on YOUR website! maybe

Linear-equations/610432: 5x-3=15x-83 1 solutions Answer 384384 by richwmiller(9143)   on 2012-05-13 11:18:06 (Show Source): You can put this solution on YOUR website! one problem at a time no similar problems limit 5 problems per 24 hours

test/610350: need help 1 solutions Answer 384341 by richwmiller(9143)   on 2012-05-13 06:56:12 (Show Source): You can put this solution on YOUR website! ok

Number-Line/610195: how to draw 9.3 and 8.6 on a number line 1 solutions Answer 384258 by richwmiller(9143)   on 2012-05-12 16:57:17 (Show Source): You can put this solution on YOUR website! put 9.3 about a third of the way between 9 and 10 and put 8.6 a little more than half way between 8 and 9