How many distinct numerical values can be represented with 4 binary digits?

Which of the following statements is true about taste bud preferences? a. taste buds respond exclusively to a certain taste sensation, like saltiness. b. taste buds have the ability to respond to all of the taste sensations. c. taste buds do not differentiate between bitter and salty sensations. d. taste buds have the capability to detect three taste sensations.

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?

Which action would probably not result in good test performance or lessened anxiety? a. visualizing success b. arriving to class right before the test c. taking deep breaths d. getting a good night's sleep before the test