10. acute angles: 0
Right angles: 4
Obtuse angles: 0
Perpendicular lines: 0
Parallel lines: 2
11. Acute angles: 2
Right angles: 0
Obtuse angles: 1
Perpendicular lines: 0
Parallel lines: 0
12. H
$412 i am pretty sure that is right if not i'm sorry but good luck :)
Answer: <u>17</u>
<u></u>
Equation: 8 - (-9)
Keep Change Change (KCC): 8 + 9
8 + 9 = 17
Have a great day!
answer: the system had no solution
Answer:
x^2-1=48
x^2=48+1
x^2=49
x=
x=7
Step-by-step explanation: