Hello,
Answer C (2,-5)
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Answer:
10
Step-by-step explanation:
3(4) -2 = 12 - 2 = 10
Ax^2+bx+c=0
a=2
b=-1
c=-3
b+-sqrt( b^2 - 4ac)
2a
so...
-1 +- sqrt(1 + 24)
4
-1 +- 5
4
x= -1 + 5 = 1
4
or
x= -1 - 5 = -3/2
4
Area of square =6*6= 36 cm^2
Area of trapezoid =1/2( base1+base2)*height
base 1=7
base2=21-6=15
height=6
Area of trapezoid =1/2( 7+15)*6= 66
whole area = area of square + area of trapezoid= 36+66=102
Answer 102