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
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<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.
Answer:
198 g
Step-by-step explanation:
Let y = the new weight
the healthy cub gains 7% of its newborn weight per day = 0.07 × 100 = 7 g
after d days
y = 100 + 7 d
after 14 days,
the new born will weigh = 100 + (7 × 14) = 100 + 98 = 198 g
Answer:
The number ins't simplified
Step-by-step explanation:
If you convert it into a mixed number it will be a lot easier to see where it goes. In this case tho 6 divided by 3 just equals 2, so the two is what you put on a number line.
Step-by-step explanation:
........ .......... ....
Step-by-step explanation:
15 percent of solution = 12 × 0.15 = 1.8 Gallons of bleach
12 - 1.8 = 10.2 Gallons of water
