ASAP. Which are potential sources of error in the experiment? Check all that apply. variable amounts of metal and magnetic properties of a material holding the compass at an angle the color of the bar magnet unseen magnetic fields (such as from an electrical appliance) the brand of light bulb used in the circuit using a dead battery in the circuit

Which expression will have the same sum as 3_8 + 1/4?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.