advantages and disadvantages for wind power electrical generation??

Answer:

y = 56

Explanation:

We label each of the given equations as follows;

4·x + 2·y = 20...(1)

-8·x - 3·y = 16...(2)

Therefore, we are given a simultaneous equation, question

We make 'x' the subject of both equations and equate the result to find the value of 'y' as follows;

For equation (1)

4·x + 2·y = 20

∴ x = (20 - 2·y)/4 = 5 - y/2

x =  5 - y/2

For equation (2), we have;

-8·x - 3·y = 16

∴ x = (16 + 3·y)/(-8) = -2 - 3·y/8

x = -2 - 3·y/8

Equating the two equations of 'x', gives;

5 - y/2 = -2 - 3·y/8

7 = y/2 - 3·y/8 = (4·y - 3·y)/8 = y/8

∴ 7 = y/8

y = 7 × 8 = 56

y = 56

Answer:

The functional surface on the microstructures reduces the friction. Below the functional surface, the layer surface will be there. It also reduces friction. The microstructures on the functional surface act as an oil reservoir and it produces the oil. It is well known that friction between lubricated surfaces is a chief source of energy Now, help is on the way due to research taking place within the Engineering Research Center for Compact and Efficient Fluid speed and lubricant type, and then choose the optimal microstructures.

Explanation: