Help please
1 over 3b = 4 over 5 . Which of the following equals b in this equation? (4 points)

2 2 over 5

1 1 over 8

2 over 5

1 over 4

Steps to solve:

1/3 b = 4/5

(3/1) * (1/3 b) = (4/5) * (3/1)

b = 12 / 5

b = 2 2/5

The correct answer is the first option, 2 2/5.

Hope this helps!! :)

2 2/5

Step-by-step explanation:

b/3 = 4/5

We can solve using cross products

5b = 3*4

5b = 12

Divide each side by 5

5b/5 = 12/5

b = 12/5

b = 2 2/5

c

step-by-step explanation:

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.