You have to upload this in the area of mathematicians..!
The correct answers are:
B) Producers supply enough goods for consumers;
D) Supply equals demand;
In the economics, the equilibrium state basically means that the supply in the market is well balanced with the demand on the market, thus leading to an ideal economic state within the economy. The equilibrium will essentially mean that the supply is equal to the demand, thus there will be maximum efficiency. Also, since the producers are managing to supply just the right amount of goods to the consumers, everyone will benefit, with the consumers always have what they want, and the producers always have all of their products sold.
Answer: Frequency
Explanation: The velocity of a wave is the product of wavelength and frequency. That is to say:

Hence, the frequency associated with the tsunami is needed to calculate the velocity.
Answer:0.50m/s divide by 0.050sec = 10m/s
Explanation: dividing the meter per second [m/s] by the second [s
Answer:
The angular position of the wheel after 2.7 seconds is θf= 11.35 rad.
Explanation:
θi= 8.8 rad
ωi= 0 rad/seg
α= 0.7 rad/seg²
θf= θi + ωi * t + α * t² / 2
θf= 11.35 rad