Help with horribly complicated math problems (at least for me)?
2. Find the time between 3 and 4 o’clock when the minute hand and the hour hand are 35 degrees apart.
3. At noon a train leaves New York for Toronto while another leaves Toronto for New York. It takes one train 8 hours and the other train 22 hours to make the trip. Both maintain constant speeds. At what time do they pass?
4. If f(x) = x^2 + 2 find the sum and difference of the roots (solutions) fo the equation: f(f(x) + 3 f(x) = xf(x) + f(x)
5. Tom can paint the house in 3 hours. Becky can paint it in 4 hours. Huck can paint the house in 6 hours. If they work together, what is their rate per hour? How long would it take them to paint the house?
Favorite Answer
second. geometry not my cup of tea sorry
third. find out the mileage between the two locations then you can figure it out
fourth. can’t help there
fifth. thats an averaging question
let speed of train a be Va and other one Vb
Distance is same
Va = D/Ta = D/8
Vb = D/Tb = D/22
The location of a at time t (in hours) is (da) the distance from New York
da = Va x t = (D/8) t = Dt/8
likewise also disance from New York of b
db = D – Vb x t = D – Dt/22 = D(1 – t/22)
at what time are these the same?
da = db
Dt/8 = D(1 – t/22)
t/8 = (1 – t/22)
t =
add this to 12:00
that’s all i know
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