If the stack is 21ins and each board is 1 3/2 ins thick that means you 21/(1 3/2) so you end up getting 8.4. Because you can't have a part of a board you round the number down to 8 boards.
Answer:
1/5 + 9/5 x^2
None of the listed choices
Step-by-step explanation:
4x^2 +36 1
------------- * ----------
4x 5x
Factor the numerator
4(x^2 +9) 1
------------- * ----------
4x 5x
Cancel the 4
(x^2 +9) 1
------------- * ----------
x 5x
Multiply
(x^2 +9)
-----------------------
5x^2
We can break this into terms
x^2 9
------ + -----------------
5x^2 5x^2
1/5 + 9/5 x^2
81^3/4
Which happens to be 27.
Answer:
if you want to find the specific surface area of a pyramid, you have to start by start by multiplying the specific perimeter of the pyramid by its slant height. Then, you divide that number by 2. Finally, add the number you get to the area of the pyramid's base to find the surface area.
Step-by-step explanation:
