-4,-4 - 9,-1 is the answer, i think
Answer:
n < 20
Step-by-step explanation:
2n – 1 < 39
Add 1 to each side
2n – 1+1 < 39+1
2n < 40
Divide each side by 2
2n/2 < 40/2
n < 20
First time = 7:12
second time = 7:40
40 - 12 = 28
28 minutes have past
Answer:
419
Step-by-step explanation:
the answer is 419 because 38+39=77+40=117+41=158+130=288+131=419
hope my math is correct =)