The correct answer is C because the problem showed ( x + 20 ) and ( x + 8 ) two times in the problem. That explains why there is a two outside of the parentheses.
Hope I helped! :)
2(2+4x)=-4
So you expand the brackets by multiplying everything inside by outside:
4 + 8x = -4
Then you move the 4 over next to -4
8x = -4 -4
So it become 8x = -8 and then you divide 8 by -8
Which therefore gives you the answer of
X = -1
<span>|x-2|<5 Set it to 0 and drop the absolute value bars.
-3<x<7</span>
Answer: 151.2 ft²
Step-by-step explanation:
The surface area, in this case, is the area of all the shapes given combined.
For the rectangles:
A = L * W
For the triangles:
A = 
-> See attached
Now, we will add them altogether.
54 + 54 + 27 + 16.2 = 151.2 ft²
Answer:
b. f(n) = 2n^2 + 1
Step-by-step explanation:
Thanks for explaining the nth thing to me. It all makes sense now :'D
I'll be honest I think you're at least a grade level above me in math.
It's b. because
f(n) = 2(1)^2 + 1
2(1) + 1
2 + 1 = 3 (first term)
f(n) = 2(2)^2 + 1
2(4) + 1
8 + 1 = 9 (second term) ...and so on. :)
