Nicki rides her bike at a constant speed for 6 km. that part of her ride takes her 1 h. she then rides her bike at a constant speed for another 9 km. that part of her trip takes her 2 h. what is her average speed?

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit