V = 0.5*b*h*l
v = 0.5*4.8*3.2*7
v = 0.5*107.52
v = 53.76cm3
Answer: D
Step-by-step explanation: i did the exam.
Answer:
5
Step-by-step explanation:
for the first gear
revolutions/teeth
1 / 24
2 / 48
3 / 72
4 / 96
5 / 120
6 / 144
for the second gear
revolutions/teeth
1 / 40
2 / 80
3 / 120
4 / 160
<em>the two marks will meet after 120 teeth, 5 revolutions of the first gear and 3 revolutions of the second.</em>
the way to get that amount of teeth is
![24 = 2 \times 2 \times 2 \times 3 = {2}^{3} \times 3](https://tex.z-dn.net/?f=24%20%3D%202%20%5Ctimes%202%20%5Ctimes%202%20%5Ctimes%203%20%3D%20%20%7B2%7D%5E%7B3%7D%20%20%5Ctimes%203)
![40 = 2 \times 2 \times 2 \times 5 = {2}^{3} \times 5](https://tex.z-dn.net/?f=40%20%3D%202%20%5Ctimes%202%20%5Ctimes%202%20%5Ctimes%205%20%3D%20%20%20%7B2%7D%5E%7B3%7D%20%20%5Ctimes%205)
the Least Common Multiple equals the product of all factors, but those factors who are repeted for both numbers should be only once.
![{2}^{3} \times 5 \times 3 = 120](https://tex.z-dn.net/?f=%20%7B2%7D%5E%7B3%7D%20%5Ctimes%205%20%5Ctimes%203%20%3D%20120)
120 teeth are 5 revolutions for gear1 and 3 por gear2
105 m = 2.5 h
x miles = 1 hour
You cross multiply since it's a proportion:
2.5 * x
105 * 1
=
2.5x = 105
Then you divide everything by 2.5
The answer is 42
Answer:
I think the answer is 19
Step-by-step explanation: