A and 90-a is the measure of the two angles
a=90-a-6
2a=84
a=42
42° and 48°
So what you do is
make into ax^2+bx+c=0 form
add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x=

ax^2+bx+c=0
1y^2-2y+9/2
a=1
b=-2
c=9/2
subsitute
x=

x=

x=

x=

x=

x=

x=

x=

x=

answer is C
Answer:13
Step-by-step explanation:
Answer:
0.25 feet
7.62 centimeters
3 inches
Step-by-step explanation:
Not really a clear question-
Answer:
D. 25°
Step-by-step explanation: