It could be even bc it goes up
Answer:
I think 3.9 Square units?
Number of dark tiles: d
Number of white tiles: w
Figure 1: d=2, w=1
Figure 2: d=4, w=3
Figure 3: d=6, w=5
F d=2w
w=1→d=2(1)→d=2 Ok
w=3→d=2(3)→d=6 different to 4 No
G w=d-1
d=2→w=2-1→w=1 Ok
d=4→w=4-1→w=3 Ok
d=6→w=6-1→w=5 Ok
H d=2w-2
w=1→d=2(1)-2=2-2→d=0 different to 2 No
J w=(1/2)d+1
d=2→w=(1/2)(2)+1=2/2+1=1+1→w=2 different to 1 No
Answer: Option G: d=w-1
<span>Simplifying:
2x2 + -8x + -90 = 0
Reorder the terms:
-90 + -8x + 2x2 = 0
Solving
-90 + -8x + 2x2 = 0
Solving for variable 'x'.
Factor out the Greatest Common Factor (GCF), '2'.
2(-45 + -4x + x2) = 0
Factor a trinomial.
2((-5 + -1x)(9 + -1x)) = 0
Ignore the factor 2.
Subproblem 1:
Set the factor '(-5 + -1x)' equal to zero and attempt to solve:
Simplifying
-5 + -1x = 0
Solving
-5 + -1x = 0
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + -1x = 0 + 5
Combine like terms:
-5 + 5 = 0
0 + -1x = 0 + 5
-1x = 0 + 5
Combine like terms:
0 + 5 = 5
-1x = 5
Divide each side by '-1'.
x = -5
Simplifying
x = -5
Subproblem 2:
Set the factor '(9 + -1x)' equal to zero and attempt to solve:
Simplifying
9 + -1x = 0
Solving
9 + -1x = 0
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + -1x = 0 + -9
Combine like terms:
9 + -9 = 0
0 + -1x = 0 + -9
-1x = 0 + -9
Combine like terms:
0 + -9 = -9
-1x = -9
Divide each side by '-1'.
x = 9
Simplifying
x = 9
Solution
x = {-5, 9}</span>
This is simple, simply take 48 and divide it by three your product should be 16