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3 years ago

Selena rides her bicycle to work. It takes her 15 minutes to go 3 miles. How many feet will she travel in 3 minutes

Mathematics

2 answers:

pashok25 [27]3 years ago

6 0

Selena traveled 0.6 miles in 3 minutes which is a total amount of 3,168 feet since one mile is equal to 5,280 feet.

umka21 [38]3 years ago

6 0

Ratio and proportion

distance:time
given that it takes 15 minutes for 3miles
3mi:15min is the ratio

should be the same as the other
3mi:15min=?mi:3min

convert to fraction
3mi/15min=?mi/3min
1mi/5min=?mi/3min
times both sides by 3min
3min mi/5min=?mi
3mi/5=?mi
3/5mi=?mi

she will travel 3/5mi in 3mins

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Consider the implicit differential equation <img src="https://tex.z-dn.net/?f=%2849%20y%5E%7B3%7D%20%2B%2045%20xy%29%20dx%20%2B%

BaLLatris [955]

We're looking for an integrating factor $\mu(x,y)=x^py^q$ such that

$\mu\underbrace{(49y^3+45xy)}_M\,\mathrm dx+\mu\underbrace{(98xy^2+50x^2)}_N\,\mathrm dy=0$

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and so the general solution is

$F(x,y)=10x^{9/2}y^5+14x^{7/2}y^7=C$

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yarga [219]

Answer:

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