Ineed to know the answer of this picture

4th and 6th box

Step-by-step explanation:

One of the lengths of the rectangle is s-6 because it is "6 inches shorter."

The other length is s+1 because it is "1 inch longer."

You multiply them because you want to find the area. Your equation will be (s-6)(s+1).

This equation can also be written as s^2-5s-6 using distributive property.

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

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.