Select all the expressions below which represent a 20% discount off the price of an item that originally costs d dollars.
a. 0.8d
b. d-0.2
c. d-0.2d
d. 1-0.2d

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt