Let R1 = rate of flow of water from pipe 1 ( Volume flowing per hour) and V = volume of tank R1 = V/t1 = V /4 For pipe 2 R2 = V/ 6 T = time when both pipes are used T = V / (R1 + R2) T = V/ ( V/4 + V/6 ) Time taken = 2.4 hrs...

Word Problem (answer)

Let R1 = rate of flow of water from pipe 1 ( Volume flowing per hour) and V = volume of tank R1 = V/t1 = V /4 For pipe 2 R2 = V/ 6 T = time when both pipes are used T = V / (R1 + R2) T = V/ ( V/4 + V/6 ) Time taken = 2.4 hrs...

what is the factor (answer)

6x(2y-3) -(2y-3) =12xy-18x -2y+3 =6x(2y -3) - 1* (2y-3) Taking (2y-3) as common it is = (6x-1)(2y-3)

X = Number of students in each van and Y = Number of students in each bus 10X + 6 Y = 276 For one school 5X + 2Y = 117 For other school Solve these two equations for X and Y X = 15 and Y =21

If X = Number 2 ( X + 5 ) = 3 ( X - 9) Gives X = 37

If L= Length of frame W = width of frame W = 2 L Area = L * W = L * 2L = 2 L 2 = 50 sq inch L 2 = 25 L = 5 inch W = 10 inch

Some thing missing?

Let X = No. of pages with large type (with 1800 words per page ) Y = No. of pages with small type ( With 2400 words per page) X + Y = 21 ...... Eq 1 also 1800 X + 2400 Y = total words = 48000 or 18X + 24 Y = 480 or 3 X + 4 Y = 80 .... Eq 2 solve these...

Let Y = net amount d = Number of days Y = ( 26 +11.95 )d + 3.7*11 For 10 days amount will be Y = 37.95* 10 + 40.7 = $( 379.5 + 40.7 )

Y = 212 ± 4 So the temperature lies between 216 and 208 degrees F ( It can not be degree C as that can not be the temperature of hot water under normal conditions)

Let Y = Total amount payable after X days Y = (200 +80 )X + 150 = 280 X + 150 Here the slope is 280 , payable per day apart from fixed $ 150

Let the number be X Then 5 more than half means (X/2) +5 Let the number be 48 Half = 24 5 more than half = 5+ 24 = 29

Why do you go to the 5th step Just look at first two steps 40 खर्च किया 60 बचे 30 खर्च किया 30 बचे Now add one side is 70 and other is 90 Can we add like this ?

Hi Its a ratio proportion question 14.5 gallon filled 3/4 = 0.75 of full tank Let X = capacity of full tank 14.5/0.75 = X / 1 ! is for full tank X = 14.5/ 0.75= 58/3 gallon = 19.33 gallon

Hi Gaige Let J = Cost of one ticket in Japan and S = Cost of one ticket in Switzerland The two equations are 3J +2S = 78.68 and 2J + 3 S = 74.47 Now...

Hi Tom Total Number of beads = 88 One bracelet has 24 beads For 3 bracelets number of beads needed = 3*24 = 72 Beads left = 88-72 =16 Which is 8 short of 4th bracelet

word problem (answer)

Power is given by y =80 e -0.00125 Y becomes 50 watts So 50 = 80 e -0.00125 80/50 = e 0.00125 8/5 = 1.6 = e 0.00125 ln 1.6 = 0.00125 *t t =ln1.6/0.00125 = 376 days

Force on each tire = Total force / Number of tires = 1.1* 10 4N/4 Pressure = Force / Area = 10 5 N/m2 So Area = Force / 2.23*10 5 = 1.1* 10 4 /( 4*2.23 *10 5) m2 =0.0123m2 = 19.065 in2

Hello Philip It should be the shortest of these wavelengths Which is Ultra violet in this case Ideally X rays are used for Inter atomic distances and Ultraviolet waves have wave length comparable to atomic dimensions.

100 lb skateboarder Road E 5 lb board at 20 miles per hour what is the momentum of the skateboarder (answer)

momentum = Mass * Velocity = 105 * 20 =2100 lb*miles /hr

What is the frequency of a wave of red light in the air where its wavelength is 6.8×10−7m6.? (answer)

Speed = Frequency * wave length 3*10 8 = Frequency * 6.8 * 10 -7 Frequency = 3* 10 8 / 6.8 * 10 -7 = (3 * 10 15) / 6.8 Hz = (30 * 10 14) / 6.8 = 4.4 * 10 14 Hz