Solve for x. round to the nearest tenth.

pls help.

x = 7.2

Step-by-step explanation:

you can use the cos of 63 and set it equal to adjacent / hypotenuse

cos 63° =  x  

                16

.45 =  x  

         16

x = 16(.45)

x = 7.2

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5

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.