Answer:
Step-by-step explanation:
A will represent Anna. k will represent Kylie.
7a+7k=231
a=9+k
Substitute for a
7(9+k)+7k=231
63+7k+7k=231
14k=168
k=12
Then plug in the k value
a=9+12
a=21
Final answer: Anna=21 mph, Kylie= 12 mph
Answer:
23/42
Step-by-step explanation:
width/length
46/84
=23/42
23:42
=.5476
Answer:
23 and 7
Step-by-step explanation:
Multiply 23 and 7 to get 161. Subtract 7 from 23 and get 16
Answer:
The answer is 600 minutes (10 hours)
Step-by-step explanation:
20 minutes = 1 student.
30 students x 20 = 600 minutes
600mins / 60 (because an hour has 60 mins) = 10 hours.
