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Q: The distance between two cities is ninety miles, and a woman drives from one city to the other at a rate of 45 mph. At what rate must she return if the total travel time is three hours and forty
minutes? 27 mph 45 mph 54 mph
A: 1st leg DATA: distance = 90 mi ; rate = 45 mph ; time = d/r = 2 hrs. - - 2nd leg DATA: distance = 90 mi ; time = [3 2/3 - 2] = 1 2/3 hrs; rate = 90/(5/3) = 54 mph - - - - Ans: 54 mph ====================== Cheers, Stan H.
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User: The distance between two cities is ninety miles, and a woman drives from one city to the other at a rate of 45 mph. At what rate must she return if the total travel time is three hours and forty minutes? 27 mph 45 mph 54 mph

Weegy: 1st leg DATA: distance = 90 mi ; rate = 45 mph ; time = d/r = 2 hrs. - - 2nd leg DATA: distance = 90 mi ; time = [3 2/3 - 2] = 1 2/3 hrs; rate = 90/(5/3) = 54 mph - - - - Ans: 54 mph ====================== Cheers, Stan H.
manimic|Points 140|

User: The distance between two cities is ninety miles, and a woman drives from one city to the other at a rate of 45 mph. At what rate must she return if the total travel time is three hours and forty minutes? a. 27 mph b. 45 mph c. 54 mph

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Asked 8/9/2013 3:06:58 PM
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Question
Not Answered
Updated 7/2/2014 3:02:34 AM
5 Answers/Comments
(x - 2)(x - 3) = 2
x^2 - 3x - 2x + 6 = 2
x^2 - 5x + 4 = 0
(x - 1)(x - 4) = 0
x = 1 or x = 4
The solution set of (x - 2)(x - 3) = 2 is {1, 4}
Added 7/2/2014 2:45:51 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [7/2/2014 3:24:17 AM]
2x(x - 1) = 3
2x^2 - 2x - 3 = 0
a = 2, b = -2, c = -3
b^2 - 4ac = (-2)^2 - 4(2)(-3) = 4 + 24 = 28
x = (2 ± sqrt 28)/4
= (2 ± 2 sqrt 7)/4
= (1 ± sqrt 7)/2
Added 7/2/2014 2:49:08 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [7/2/2014 3:24:40 AM]
y(y + 4)(y - 6) = 0 is a quadratic equation. FALSE.
y(y + 4)(y - 6) = 0
y(y^2 - 2y - 24) = 0
y^3 - 2y^3 - 24y = 0 which is not a quadratic equation.
Added 7/2/2014 2:52:25 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [7/2/2014 3:24:48 AM]
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Added 7/2/2014 3:01:16 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [7/2/2014 3:25:06 AM]
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