Answer:
28.8
Step-by-step explanation:
You are looking for the number between 108.3 and 79.5, so you have to do this 108.3-79.5
Answer:
15.
Step-by-step explanation:
3.75 / 25 = 15.
<h2>
Answer:</h2>
The area of the top surface of the washer is: 160.14 square mm.
<h2>
Step-by-step explanation:</h2>
The top of the surface is in the shape of a annulus with a outer radius of 10 mm and a inner radius of 7 mm ( since the diameter of the hole is: 14 mm and we know that the radius is half of the diameter)
Now, we know that the area of the annulus region is given by:

where R is the outer radius and r is the inner radius.
Here we have:

Hence, we have:

Answer:
n = 0 or 3
Step-by-step explanation:
2n² - 5n + 2
2n² - 4n - n + 2
2n(n - 2) -1(n - 2)
(n - 2)(2n - 1)
Prime number is one which is divisible by itself and 1
n-2 = 1 n = 3
2n-1 = 1 n = 0