Which best describes vibration? the distance traveled per unit in time
the action of moving back and forth quickly and steadily
the distance between one compression and the compression next to it
the action of moving through a material or substance

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red