Area = base x height /2
Base =26.5
Height =40
26.5 x 40 /2 = 530
If you're meaning a value between 11 and 20, write
11<x>20 and put a line under the < and > which indicates that x could also equal 11 or 20. x doesnt only have to be a value between 11 and 20, but it can equal the numbers too.
<span>i dont think that makes a lot of sense but if you were to say the answer out loud, the answer would be "x (which is any value) is more than or equal to 11 and less than or equal to 20"</span>
I’m pretty sure the answer is (B) y= 3x + 8
A) To find the surface area of a cube, you have to use the formula 6•a^2
meaning you just have to calculate one side and multiply it by six.
541.5 is the surface area of the cube.
B) To find the surface area for just five sides, you'll be doing the same, except instead of 6 it'll be five.
so multiply 9.5 by itself
you get 90.25
Then you multiply 90.5 by 5
You get 451.25
Unfortunately I'm not sure how to do C. good luck