The weather forecast says that the probability of being cloudy tomorrow is 30% and the probability of raining is 25%. if it is cloudy, the probability of it raining is 45%. what is the probability of it being cloudy and raining.
a. 7.5%
b. 15%
c. 13.5%
d. 11.25%

In this question, we're trying to find the probability of it being cloudy and raining.

In this case, we know that:

With the information above, we can find the probability.

We know that from a 100% scale, the chance of it being cloudy is 30%.

We know that if it's cloudy, the chances of raining is 45%

To find the probability of it being cloudy and raining, we would multiply 0.3 (30%) by 0.45 (45%)

Solve:

Your answer would be C). 13.5%

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.