Which statements are true about the circle shown below? Select two options. A. The diameter is 31.4 centimeters.
B. The diameter is half the radius.
C. The circumference can be found by multiplying 2 (pi) (31.4).
D. The circumference in terms of Pi is 62.8 pi.
E. The distance around the circle is approximately 98 centimeters.

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.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950