A beverage manufacturer performs a taste-test and discovers that people like
their fizzy beverages best when the radius of the bubbles is about 0.7 mm.
According to the formula below, what would be the volume of one of these
bubbles?
O A. about 1.44 mm3
O B. about 0.41 mm
O c. about 0.55 mm
O D. about 2.05 mm

A 1.44mm³

Step-by-step explanation:

First cube both sides of the equation to make it r³=3V/4. Then multiply 4 on both sides to make it 4³r=3V. Divide 3 over so the equation for volume is V=(4³r)/3. Now substitute .7 in for r and solve. This makes it 1.44mm³

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify