Answer:
0.6
Step-by-step explanation:
1. Since Avery got 18 out of 30 questions right, we can write that as a fraction of 
.
2.
3. 
4. 
5. 
I’m pretty sure parallelograms are squares, rectangles and rhombuses. So you could take up the needed amount of space with a rectangles and rhombus. Sorry if this isn’t that much help.
11a:
3x+5=5x-57
3x-5x=-57-5
-2x=-62
x=31
11b:
2x+2x+4x+150+4x+150=360
12x+300=360
12x=360-300
12x=60
x=5
hope this helped !!
a = 4, b = -21, c = -18
to keep from getting "mixed up", evaluate the discriminant first ...
b<sup>2</sup> - 4ac = (-21)<sup>2</sup> - 4(4)(-18) = 729
sqrt(729) = 27
x = (21 +/- 27)/8
x = -3/4, x = 6
since the discriminant is a perfect square, the original quadratic will factor ...
4x<sup>2</sup> - 21x - 18 = 0
(4x + 3)(x - 6) = 0
x = -3/4, x = 6
9x +1= 0
9x/9 +1-1=0
X= 9-1
X= 8
