Carlos spent 1 1/4 hours doing his math homework. He spent 1 1/4 as much time practicing piano How many hours did Carlos spend practicing piano?

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

hello i am doing good for you that it's summer in your country or state ; )

btw in my country we just have sun and rain as (because i live in the caribbean lol)

also, thx a lot for the points : )