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Age_Word_Problems/224084: Mr. Mustad said: Eight less than three times my age is 100" How old is Mr. Mustard? 1 solutions Answer 167410 by rfer(12666)   on 2009-10-08 23:27:28 (Show Source): You can put this solution on YOUR website! (100+8)/3=x 108/3=36 yrs

Probability-and-statistics/223985: THe principle 'P' and the future value 'A' are given at time 't'. Find the simple interest rate 'r' P= $3000 A= $3180 t= 1 year thanks! 1 solutions Answer 167409 by rfer(12666)   on 2009-10-08 23:24:17 (Show Source): You can put this solution on YOUR website! A=P(1+r) A/P=1+r 3180/3000=1+r 1.06=1+r r=.06=6%

Expressions-with-variables/224024: I need an equation for the following sentence: Fifty is twice the quotient of the number of students and seven. 1 solutions Answer 167407 by rfer(12666)   on 2009-10-08 23:13:05 (Show Source): You can put this solution on YOUR website! 50=(x/7)(2)

Proportions/224076: Hi, I am really confused with my homework and my teacher won't help me so... My quesions is about of course Proportions and Dimensional Analysis. I sort of understand the proportions, but not the other one. Three of my problems are: a.) 50 meters per second to kilometers per hour. b.) 0.025 day to seconds. (Now this one I really don't understand) c.) 1200 ounces to tons (16 oz=1 lb; 2000 lb=1 ton). And here is one problem for a proportion question: 0.926 meter/1 yard = 20 meters/x yards. 1 solutions Answer 167403 by rfer(12666)   on 2009-10-08 23:10:23 (Show Source): You can put this solution on YOUR website! a) 50m per sec = km per hr 360 sec per hr 50*360=18000 m per hr=18km per hr b) what part of a day is 2.5% in seconds 24 hrs per day times 360 seconds per hr=8640sec per day 8640*.025=216 seconds c) 1200/16=75 lbs 75/2000=.0375 tons d) 0.926/1=20/x cross multiply 0.926x=20 x=21.6 yds

Miscellaneous_Word_Problems/223989: How many 1-cup servings are there in 3 1/2 quarts of soup? 1 solutions Answer 167398 by rfer(12666)   on 2009-10-08 22:54:26 (Show Source): You can put this solution on YOUR website! 8 oz per cup 1 qt = 32 oz (3.5*32)/8=14 cups

Graphs/224064: Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. A. The sales representative informs you that there are two floor plan still available,and that there are a total of 56 houses available. Use x to represent floor plan #1 and y to represent floor plan #2. Write an equation that illustrates the situation. 1 solutions Answer 167394 by rfer(12666)   on 2009-10-08 22:40:28 (Show Source): You can put this solution on YOUR website! x+y=56

Equations/223917: solving equations. 8(6+r)=40 need answer. 1 solutions Answer 167347 by rfer(12666)   on 2009-10-08 19:55:29 (Show Source): You can put this solution on YOUR website! 8(6+r)=40 48+8r=40 8r=-8 r=-1

Percentage-and-ratio-word-problems/223931: The ratio of boys to girls in Mr. Good’s class is 3 to 5, the ratio of boys to girls in Ms. Garcia’s is the same, and you know that there are 15 girls in Ms. Garcia’s class. How many boys are in Ms. Garcia’s class? Explain how you got your answer. 1 solutions Answer 167346 by rfer(12666)   on 2009-10-08 19:47:21 (Show Source): You can put this solution on YOUR website! 3/x:5/15 5x=45 x=9 boys

Travel_Word_Problems/223941: Hello, I do not know how to answer word problems involving trains traveling at a certain rate of speed, thus wondering when they will meet. See below: Train A and B are traveling together on a parallel track. Train A is traveling at 60 mph and Train B is traveling at 80 mph. Train A passes the train station at 2:20 pm. If Train B passes the station at 2:35 pm at what time will Train B catch up with Train A? I know the following equations will help but i dont know how to incorporate them: d=rt d=ST S=D/T T=D/S ??? Thanks 1 solutions Answer 167344 by rfer(12666)   on 2009-10-08 19:43:23 (Show Source): You can put this solution on YOUR website! train A is 15 mi ahead of train B overtake speed is 20 mph 15/20=.75 hr=45 min 2:35+45=3:20 pm

Equations/223944: -7a-9=6 also 5x+14=-x 1 solutions Answer 167343 by rfer(12666)   on 2009-10-08 19:38:57 (Show Source): You can put this solution on YOUR website! -7a-9=6 -7a=15 a=-2 1/7 --------------- 5x+14=-x 6x=-14 x=2 1/3

Equations/223932: Parking lot A charges a set fee of 7.00 plus 2.00 per hour. Parking lot B charges 5.00 plus 3.00 per hour. What is the break even point for the two options? Ive tried alot of things but cant figure it out!! I also have a ti 84 graphing calc, but i dont know how to use it for this kind of problem. 1 solutions Answer 167341 by rfer(12666)   on 2009-10-08 19:36:23 (Show Source): You can put this solution on YOUR website! 7+2x=5+3x x=2 hrs

Graphs/223871: solve using addition amd multiplication principle 8+7x<36 type inequaility and then integer or fraction 1 solutions Answer 167318 by rfer(12666)   on 2009-10-08 17:45:48 (Show Source): You can put this solution on YOUR website! 8+7x<36 7x<28 x<4

Rational-functions/223866: 32 oz=_lb, 16lb_oz, 18,000lb=_lb, 21pt=_fl oz 1 solutions Answer 167316 by rfer(12666)   on 2009-10-08 17:43:46 (Show Source): You can put this solution on YOUR website! 32 oz=2 lbs 16 lbs=16*16=256 oz 18000 lbs=9 tons 21 pt=21*16=336 fl oz

Permutations/223869: Last year at a certain car dealership the ratio of cars to suv's sold was 5 to 3. If 400 cars were sold, how many SUV's were sold? 1 solutions Answer 167313 by rfer(12666)   on 2009-10-08 17:39:14 (Show Source): You can put this solution on YOUR website! 5x+3x=400 8x=400 x=50 5x=250 car's 3x=150 suv's

Permutations/223863: To make an A in Mrs. Boudreauxs class, a student must have an average of at least 90 on all five tests. Andy has made grades of 91, 83, 89, 92 on the first four tests. What must he make on the fifth test in order to get an A in Mrs. Boudreaux's class? 1 solutions Answer 167309 by rfer(12666)   on 2009-10-08 17:37:12 (Show Source): You can put this solution on YOUR website! (91+83+89+92+x)/5=90 (355+x)/5=90 355+x=90*5 355+x=450 x=450-355 x=95

Linear-systems/223825: use the distributive property to help solve the equation: 5(w-2)=-10 1 solutions Answer 167306 by rfer(12666)   on 2009-10-08 17:31:56 (Show Source): You can put this solution on YOUR website! 5(w-2)=-10 5w-10=-10 5w=0 w=0/5 w=0

Linear-equations/223826: Solve 11-9y-9y<83. the soultion set is 1 solutions Answer 167303 by rfer(12666)   on 2009-10-08 17:28:56 (Show Source): You can put this solution on YOUR website! 11-9y-9y<83 -18y<72 y>-4

Angles/223827: Find two supplementary angles such that the measure of the first angle is 18 degrees less than three times the measure of the second. The measure of the first angle is? 1 solutions Answer 167301 by rfer(12666)   on 2009-10-08 17:25:15 (Show Source): You can put this solution on YOUR website! 3x-18+x=180 4x=198 x=49.5 degrees 3x-18=130.5 degrees

Distributive-associative-commutative-properties/223832: use the commutative property to solve 9 times 4 1 solutions Answer 167300 by rfer(12666)   on 2009-10-08 17:21:42 (Show Source): You can put this solution on YOUR website! 4*9=36 9*4=36 changing the order doesn't change the results

Permutations/223838: Keith is lining both sides of his 27- foot long driveway with low-wattage lamps. He plans to install one at each end and place one every three feet. How many lamps should he buy? 1 solutions Answer 167298 by rfer(12666)   on 2009-10-08 17:18:08 (Show Source): You can put this solution on YOUR website! 54/3+2=20

Unit_Conversion_Word_Problems/223854: If a man 6 feet tall cast a shadow of four feet long, how long a shadow will be cast by a cell tower that is 75 feet tall? 1 solutions Answer 167296 by rfer(12666)   on 2009-10-08 17:15:33 (Show Source): You can put this solution on YOUR website! 4 is 2/3 of 6 75*(2/3)=150/3=50ft

Graphs/223840: please help me solve 0.3x+4<0.7x-3 the inequaility sign is the less then equal to sign 1 solutions Answer 167293 by rfer(12666)   on 2009-10-08 17:13:19 (Show Source): You can put this solution on YOUR website! .3x+4<=.7x-3 7<=.4x 17.5<=x

Signed-numbers/223844: so i have this test tomorrow and i do not understand how to determine what r equals.PLEASE HELP ME! so the question says determine the value of r so that the line passes through each pair of points has the given slope. (r,4)(7,1)with m=3/4. step by step how do i solve this?? 1 solutions Answer 167291 by rfer(12666)   on 2009-10-08 17:08:17 (Show Source): You can put this solution on YOUR website! here goes. plot (7,1) then use the slope to find the next point from (7,1) go four to the right and three up to(11,4) slope=m=3/4 rise over run Does that help? Bob

Sequences-and-series/223759: what is the nth term 3,6,11,18,27,38 1 solutions Answer 167279 by rfer(12666)   on 2009-10-08 16:36:24 (Show Source): You can put this solution on YOUR website! 66 sequence goes up by the difference plus two of the last

Graphs/223789: graph the equation using the slope and the y-intercept y=5/3x+7 1 solutions Answer 167277 by rfer(12666)   on 2009-10-08 16:32:50 (Show Source): You can put this solution on YOUR website! y=mx+b m=slope b=y int y=5/3x+7 slope=m=5/3 y int=7 (0,7)

Money_Word_Problems/223791: How much money should Sheila invest in an account that earns 8% annual interest compounded monthly in order to have $4,000 in 5 years? 1 solutions Answer 167276 by rfer(12666)   on 2009-10-08 16:29:20 (Show Source): You can put this solution on YOUR website! P=4000/(1+.08/12)^12*5 P=4000/(1.006666)^60 P=4000/1.4897865 P=$2685

Numeric_Fractions/223770: How do you solve these two math probelms 15/y=-3= and m over 6 = 4 = 1 solutions Answer 167258 by rfer(12666)   on 2009-10-08 15:14:02 (Show Source): You can put this solution on YOUR website! 15/y=-3 y=-3/15 y=-1/5 ----------- m/6=4 m=4*6 m=24

Equations/223763: Please help me solve these problems: y=-7x+4 Find the slope, if it exists. Use the equation below and the indicated value to find an ordered pair that is a solution of ( ,27) y=5x-3. Decide whether the pair of lines is parallel, perpendicular, or neither. 2x+4y=6 and 4x-2y=9. Find the intercepts and then use them to graph the equation 3x+y=6. Thank you. 1 solutions Answer 167256 by rfer(12666)   on 2009-10-08 15:11:31 (Show Source): You can put this solution on YOUR website! a) y=-7x+4 y=mx+b slope=m=-7 b) y=5x-3 5x=y+3 x=(27+3)/5 x=6 (6,27) c) first has a slope of -2 second has a slope of 4 d) 3x+y=6 3(0)+y=6 (0,6) y int 3x+0=6 x=2 (2,0) x int

Inequalities/223766: Solve the inequality: 18+9p>12p-31 1 solutions Answer 167253 by rfer(12666)   on 2009-10-08 15:03:53 (Show Source): You can put this solution on YOUR website! 49>3p 16.33>p

Coordinate-system/223765: How do I graph a line with a slope of 3? 1 solutions Answer 167252 by rfer(12666)   on 2009-10-08 15:01:06 (Show Source): You can put this solution on YOUR website! slope of 3 is the same as 3/1 or one two the right and 3 up from your info I can't give you a starting point though. Good luck Bob

Problems-with-consecutive-odd-even-integers/223685: An average of 9 gallons of water evaprated from a swimming pool everyday. The net change in water quantity after 39 days would be ? gallons 1 solutions Answer 167237 by rfer(12666)   on 2009-10-08 14:25:07 (Show Source): You can put this solution on YOUR website! water lost in 39 days 39*9=351 gal lost