Brainliest will be given if You answer correctly! What type of heat transfer takes place when a furnace heats up an entire room?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?