2520 bolts
Explained:
If it starts working at 3 PM, and makes 900 nuts at the rate of 600 nuts per hour. 900/600 =1.5. So it stopped making nuts at 4:30.
Then it started making bolts at a rate of 720 per hour for 3.5 hours between 4:30 and 8:00pm. 720 x 3.5 = 2520 bolts
Okay so
area of picture= 192cm
area of frame= 40×24=960
960÷ 192= 5
Therefore the picture is 1/5 of the frame.
Length of picture = 1/5 × 40 = 8cm
Width of picture = 192/8 = 24
The dimensions of the picture are then 8cm × 24 cm.
Answer:
d=19.6 km,r=9.8 km
Step-by-step explanation:
USE equation for C
C=2rπ
19.6π=2rπ
19.6=2r
d=19.6 km
r=9.8 km
Answer: There are 45 combinations.
Step-by-step explanation:
If the order in which you watch the episodes does not matter, then we can use the combinatory defined as:
If we have N elements, and we want to make groups of K elements, we have
combinations.
In this case, we have a total of N = 10 episodes, and we want to make groups of K = 2.
Then we have:

There are 45 combinations.