Answer:
√10,−√10
Step-by-step explanation:
award brainliest
Becouse k and n are 'neighbours' so their sum are 180
so k=180-42=138
She did 12 questions, and needs to do 36.
36 / 12 = 3, so it will take 3 times as long.
1 hour 20 minutes times 3 = 4 hours.
It will take her 4 hours.
