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 Average/293216: if john travel 10 miles at 5 miles per hour,12 miles at 4 miles per hour, and 18 in three hours, what was his average speed for the trip1 solutions Answer 211669 by richwmiller(9135)   on 2010-04-17 11:28:21 (Show Source): You can put this solution on YOUR website!Notice: It is 18 in three hours for 6 mph It is not (5+4+6)/3=15/3=5 mph d=r*t 10=5*2 12=4*3 18=6*3 average r=d/t (10+12+18)/(2+3+3)=40/8=5 mph
 Pythagorean-theorem/293208: A ladder is resting against a wall. The top of the ladder touches the wall at a height of 18 feet. Find the length of the ladder if the length is 6 feet more than its distance from the wall Could someone help me with this? Thank you1 solutions Answer 211668 by richwmiller(9135)   on 2010-04-17 11:08:51 (Show Source): You can put this solution on YOUR website!The wall and the floor form a right angle. The hypotenuse is the ladder a^2+b^2=c^2 a=18 height b=c-6 distance from wall If the length means the length of the ladder "if the length is 6 feet more than its distance from the wall" 18^2+(c-6)^2=c^2 18^2+c^2-12c+36=c^2 18^2-12c+36=0 18*18+18*2-12c=0 18(18+2)-12c=0 18*20=12c 3*20=2c 30=c The ladder is 30 ft The foot of the ladder is 24 feet from the wall check 18^2+24^2=30^2 ok Just curious, what did you think would happen if you didn't ask "Could someone help me with this?"?
 Graphs/293203: how would I graph -3<=x<=61 solutions Answer 211665 by richwmiller(9135)   on 2010-04-17 10:55:44 (Show Source): You can put this solution on YOUR website!Find x=-3 and mark it Find x=6 and mark it You want everything between those two marks including those two marks.
 Average/293200: A week ago, Sandy’s seasonal Little League batting average was 360. After five more at bats this week, Sandy’s batting average is up to 400. What is the smallest number of hits that Sandy could have had this season?1 solutions Answer 211664 by richwmiller(9135)   on 2010-04-17 10:52:42 (Show Source): You can put this solution on YOUR website!x/y=.36, (x+z)/(y+5)=.4, z<=5 9 before the last five at bats 12 after the last five 9/25 3 of the last five 9/25=.36 12/30=2/5=.4 18/50 4 of the last 5 18/50=.36 22/55=2/5=.4 27/75 5 of the last 5 27/75=.36 32/80=4/10=2/5=.4
 Graphs/293154: Graph y>= -5 x>= 6 1 solutions Answer 211648 by richwmiller(9135)   on 2010-04-17 10:03:06 (Show Source): You can put this solution on YOUR website!find (6,-5) on your graph paper. Everything to the right and above the point is to be shaded including that point. It should look like a rectangle.
 Quadratic_Equations/292353: How do you make a table of values and graph y<-x^2+x? Everytime i graph it i get a graph that looks nothing like the one in the back of my book i cant figure out the nubers to put in for x in the table of values because my teacher said to find the vertex and use it for the middle of the table but it is not working for me1 solutions Answer 211646 by richwmiller(9135)   on 2010-04-17 09:57:59 (Show Source): You can put this solution on YOUR website!so what does the graph in the book look like? What is the vertex that you found? x=-b/2a= -1/2*(-1)= 1/2 y=-x^2+x y=-1/4+1/2=1/4 The vertex is (1/2,1/4) If you got something else that will throw your graph off.
 Radicals/293159: What are the steps to solving this problem? * ^5 = to the fifth power. / = fraction 100a^4/144b^8 (under a radical) 1 solutions Answer 211642 by richwmiller(9135)   on 2010-04-17 09:47:17 (Show Source): You can put this solution on YOUR website!what is under a radical and which radical? square root? cube root?
 Numbers_Word_Problems/293142: The denominator of a certain fraction is 8 more than numerator. If both parts of the original fraction are added with 6, the new fraction becomes 9/13 . Find the original fraction.1 solutions Answer 211641 by richwmiller(9135)   on 2010-04-17 09:45:54 (Show Source): You can put this solution on YOUR website!(x+6)/((x+8)+6)=9/13 x=12 original fraction 12/20 check 12+6/20+6=18/26=9/13 ok
 Linear_Equations_And_Systems_Word_Problems/293158: 2. As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a. The sales representative here tells you they also have two floor plans available, but they only have 38 homes still for sale. Write an equation that illustrates the situation. Use x and y to denote floor plan one and floor plan two respectively. X+y=38 b. The representative tells you that floor plan one sells for \$175,000 and floor plan two sells for \$200,000. She also mentions that all the available houses combined are worth \$7,200,000. Write an equation that illustrates this situation. Use the same variables you used in Part a. c. Use elimination to determine how many houses are available in each floor plan. Explain how you arrived at your answer. 1 solutions Answer 211634 by richwmiller(9135)   on 2010-04-17 09:30:12 (Show Source): You can put this solution on YOUR website!http://www.algebra.com/algebra/homework/Graphs/Graphs.faq.question.178482.html and also http://www.algebra.com/algebra/homework/word/Linear_Equations_And_Systems_Word_Problems.faq.question.227832.html
 Length-and-distance/293165: how i guess, just see co-ordinate of several points that which points are shortest distance without using well known pythagoren distance formula . here actually i need to guess approximate shortest distance but not actual distance of two points. 1 solutions Answer 211633 by richwmiller(9135)   on 2010-04-17 09:27:11 (Show Source): You can put this solution on YOUR website!Huh? Give an example!
 Complex_Numbers/293139: Please help me solve this equation: 1 solutions Answer 211632 by richwmiller(9135)   on 2010-04-17 09:25:23 (Show Source): You can put this solution on YOUR website!This is not an equation and so there is nothing to solve. See notes on similar problem that you submitted.
 Proportions/293138: Please help me solve this equation: 1 solutions Answer 211631 by richwmiller(9135)   on 2010-04-17 09:23:39 (Show Source): You can put this solution on YOUR website!This is not an equation and so there is nothing to solve. BTW You submitted an almost identical problem. Website rules prohibit similar problems. Also both problems in the incorrect categories.
 Polynomials-and-rational-expressions/293192: 1/2-1/4 divided by 3/8+1/16 I got 9/16-4/16 divided by 6/16+1/16 answer 6/16 times 16/1 cancel the 16's and it is 5 1 solutions Answer 211627 by richwmiller(9135)   on 2010-04-17 09:18:22 (Show Source): You can put this solution on YOUR website!(8/16-4/16)/(6/16+1/16) 4/7 Your "work" below is pure nonsense! Did you even try after the first line? 9/16-4/16 divided by 6/16+1/16 [1/2=8/16 not 9/16] [using your numbers It should be 5/16 over 7/16 answer 6/16 times 16/1 cancel the 16's [again using your numbers 6/1=6 not 5] and it is 5 but what happened to the whole numerator ? 9/16-4/16 and how did you go from 6/16+1/16 to 6/16 times 16/1 You went from plus to divide to multiply.
 Age_Word_Problems/293178: In 10 years, Samuel will be 1/2 as old as Roman. Five years ago, Samuel was only 1/3 as old as Roman. How old is Samuel now?1 solutions Answer 211624 by richwmiller(9135)   on 2010-04-17 09:03:40 (Show Source): You can put this solution on YOUR website!(s+10)=(r+10)/2 (s-5)=(r-5)/3 r=50 s=20
 Travel_Word_Problems/293183: A train travels 120 miles in 3 1/2 hours. What is the trains rate of travels.1 solutions Answer 211622 by richwmiller(9135)   on 2010-04-17 08:59:49 (Show Source): You can put this solution on YOUR website!120/3.5=240/7=34 2/7=34.26 mph
 Rectangles/293188: Parameter = 46, L= 3*W - 51 solutions Answer 211620 by richwmiller(9135)   on 2010-04-17 08:56:07 (Show Source): You can put this solution on YOUR website!So do you have a question about parameters or perimeters? They are not the same!
 Graphs/293190: passes through points (-2,-3) and (3,3) 1 solutions Answer 211618 by richwmiller(9135)   on 2010-04-17 08:54:04 (Show Source): You can put this solution on YOUR website!Is this a guessing game? Should we guess what passes through those points? a circle? a line ? a parabola? a square?
 Exponents-negative-and-fractional/293186: how do you solve (r-6)4(exponent)1 solutions Answer 211617 by richwmiller(9135)   on 2010-04-17 08:52:16 (Show Source): You can put this solution on YOUR website!(r-6)^4 The exponent is not negative nor a fraction. There is no equal sign so there is nothing to solve. We could expand the term if we wanted to but it would not be simplified (r-6)^4= r^4-24r^3+216r^2-864r+1296
 Travel_Word_Problems/293141: Train A and B are traveling in the same direction on parallel tracks. Train A is traveling 60 miles per hour and Train B at 80 mile per hour. Train A passes a station at 8:20am, if train B passes the same station at 8:35am, at what time will train B catch up to train A? When will train B catch up with train A?______1 solutions Answer 211616 by richwmiller(9135)   on 2010-04-17 08:46:02 (Show Source): You can put this solution on YOUR website!a 60 mph 8:20 b 80 mph 8:35 a has a head start of 15 minutes which is 1/4 hr. in 1/4 hr it goes 15 miles train b is catching up at 20 miles and hr. so it will catch up in 45 minutes 8:35 +0:45=8:80=9:20 am We can also write it: 60*(x+1/4)=80x 60x+15=80x 15=20x 15/20=3/4=x 3/4 hr=45 minutes same as above Train B catches train A at 9:20 am. ANSWER
 Geometry_Word_Problems/293182: A ship sails 14 km due east, 5 km due north, 10 km due west and 8 km due south. how far will the ship be from its original starting point ?1 solutions Answer 211615 by richwmiller(9135)   on 2010-04-17 08:37:13 (Show Source): You can put this solution on YOUR website!count west as neg and north as neg add north and south 5 north+8 south leaves 3 add east and west 10 west+14 east leaves 4 This is a classic 3,4, 5 Pythagorean triplet right triangle You can also apply Pythagorean theorem 3^2+4^2=d^2 9+16=d^2 25=d^2 5=d