! greg is in a bike race. at mile marker four (out of ten), his speed was measured at 13.5 mph. which best describes the measured number? a)it is the average speed of the bike rider. b)it is the instantaneous speed of the bike rider. c)it is the instantaneous velocity of the bike rider

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.