X+5=13+3x
Okay. First subtract 5 from both sides.
x + 5 = 13 + 3x
-5 -5
___ __
0 8
x = 8 +3x
Subtract 3x on both sides. (The 3x's get cancelled on the right side.)
x -3x = 8
-2x=8
Divide -2 on each side.
-2x 8
___ = ___
-2 -2
x=-4
Units of square inches are never equal to units of cubic inches, so we presume the statement of the problem applies to the numerical values in in² and in³.
The volume of a cuboid of length L, width W, and height H is
... V = LWH
The area is
... A = 2(LW + H(L+W))
You want these to be equal for L=9, W=4, and H=x.
Equating the expressions, we have
... 9·4·x = 2(9·4 +x(9+4))
... 36x = 2(36 +13x) . . . . . simplify a bit
... 36x = 72 + 26x . . . . . . simplify more
... 10x = 72 . . . . . . . . . . . . subtract 26x
... x = 7.2
The dimension represented by x is 7.2 inches.
Answer:
Step-by-step explanation:
First, use the distributive property Thus,
Then given expression will take look
This expression consists of three terms, one term with m and two terms without m. Combine terms without m:
Therefore, an equivalent expression is
=2(x+2xy+4y) Have a great day!