Answer: 31 is a prime number because only 1 times itself equals 31. no other two factors equal 31 as a product.
Step-by-step explanation:
Check the picture below.
so, if we get the whole area of the figure, which will be the combined areas of those three rectangles, and if we get the area of the triangle, and then subtract that area from of the triangle from the whole figure's area, we're in effect making a whole in the total area, and what's leftover is the shaded area.

Answer:
Step-by-step explanation:
Answer:

Step-by-step explanation:
The question is not properly formatted, here is a good format for proper understanding and readability

let us first collect/ group like terms

we can now bring out the common factors we have
<em>The simplified expression is </em>

Answer:
17(n+31)=300
Step-by-step explanation:
17 times the sum of a number, n and 31 is 17(n+31)
and then set that equal to 300