A jet travels at 610 mi/hr relative to the air. it takes the jet 1.6h longer to travle the 3660 mi from London to Washington DC against the wind than it takes from
Answers
Answered by
0
w = velocity of wind
time duration for London to Washington = 3660 / (610 - w) = t1 equation 1
time duration for washington to London = 3660 / (610 + w) = t2 equation 2
t1 - t2 = 1.6 hours so subtract equation 2 from equation 1. Take lcm & add
3660 [w + w ]
---------------------------- = 1.6
(610 - w) (610 + w)
3660 * 2 w = 1.6 (610² - w²) => w² + 4575 w - 372100 = 0
w = [ - 4575 + - squareRoot( 4575² + 4 * 372100) ] / 2
w = (-4575 +- 4734.87) / 2 = 79.94 mi/hr = 80 mi/hr after rounding off
time duration for London to Washington = 3660 / (610 - w) = t1 equation 1
time duration for washington to London = 3660 / (610 + w) = t2 equation 2
t1 - t2 = 1.6 hours so subtract equation 2 from equation 1. Take lcm & add
3660 [w + w ]
---------------------------- = 1.6
(610 - w) (610 + w)
3660 * 2 w = 1.6 (610² - w²) => w² + 4575 w - 372100 = 0
w = [ - 4575 + - squareRoot( 4575² + 4 * 372100) ] / 2
w = (-4575 +- 4734.87) / 2 = 79.94 mi/hr = 80 mi/hr after rounding off
sweetysiri92:
i got d answer
mark the answers of all questions as brainliest please
sorry i got d wrong answer
what do u want me to do? u have the right answer in front of you
u do the answer and post it
i did the answer for you. you donot thank for it. you say some thing. what do u mean.
post all the thing over here
Thank
u have to click on thank you link below the answer. you have to select the brainliest answer.
Thankyou
Similar questions