Choose the best answer
8 <2(a + 3) < 10
Please need help at this

1 < a < 2

Step-by-step explanation:

8 < 2 (a+3) <10

8 < 2a+6 < 10 (Simplify all parts of the inequality)

8+ −6 < 2a +6+ −6 < 10+ −6 (Add -6 to all parts)

2 < 2a < 4

2/2 < 2a/2 < 4/2 (Divide all parts by 2)

=1 < a < 2

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: 1inch=7days  

12inch=12*7=84days

step-by-step explanation: