Calcium and boron react to form calcium boride, as represented by the chemical equation below.
Ca + 6 B → Cabo
Which type of reaction is shown by this equation?
A. double displacement B. single displacement
C. synthesis
D. decomposition

In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f