9514 1404 393
Answer:
7.83 km/h
Step-by-step explanation:
At her constant pace, Nina's time for 6 km will be found by the proportion ...
(time for 6 km)/(6 km) = (time for 9 km)/(9 km)
time for 6 km = (6 km)/(9 km) × (75 min) = 50 min
Jo's time for the same distance will be 4 minutes less: 50 -4 = 46 min. Jo's speed is ...
speed = distance/time
= (6 km)/(46/60 h) = 360/46 h ≈ 7.83 km/h . . . . Jo's speed
_____
<em>Additional comment</em>
From the 6 km point, the remaining race is half the distance already run, so will take half the time already taken. As we know, Nina will finish in 25 more minutes; Jo will finish in 46/2 = 23 more minutes, 2 minutes ahead of Nina.
The answer is D: -1
If you plug it in, it’s the only one that works
Answer:
56
Step-by-step explanation:
Multiply 4 by 14 to get your answer.
Step-by-step explanation:
okay so im in 8th grade and i just worked the problem out and i got , 809 ,
first you add 230 + 349 to see how much she has in her farm
she has 579, then you add 579 because she has that many , and he has 230 so you add 579 +230 and tou get 809
work:
230
+349
----------
579
+230
---------
809
hope i helped!!
