Answer:
i would say i think it's A if not sorry
Step-by-step explanation:
Answer:
12 1/4 or (Decimal: 12.25)
Step-by-step explanation:
(3 1/2) (3 1/2)
= 7/2 (3 1/2)
= 7/2 (7/2)
= 49/4
= 12 1/4
I hope I helped you!!
Answer:
The last gearwheel would make 3 revolutions.
Step-by-step explanation:
The measure of the revolution of a gear per minute is referred to as the speed ratio. The speed ratio is the ratio of the speed of the driver gear to that of the driven gear, or ratio of the number of teeth of the driven gear to the number of teeth of the driver gear.
In the given question, the second and third gears are idlers. while the first is the driver and the fourth the driven.
The revolution of the last gearwheel can be determined by;
Speed ratio = 
= 
= 
Speed ratio = 1 : 3
The last gear would make 3 revolutions.
Add 2 hours to make it 9:30, which is too long. Then subtract one minute to make it 9:29. so the answer is 1 minute less than 2 hours, or 1 hour and 59 minutes
I think it’s D hope that helped