In a practical machine, the power output is smaller than the power input. considering the law of energy conservation, what can explain this occurrence? a. some of the energy going into the machine is being destroyed. b. some of the energy is used to combat friction, and thus is transformed from mechanical energy to heat. c. some of the energy going into the machine is being created at a quicker rate than the energy coming out is being destroyed. d. some of the energy coming out of the machine is being destroyed.

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.

Answer asap! due in 30 minutes! ! 8th grade math