Answer:
11970 barrels of oil
Step-by-step explanation:
1 day use 285 barrels of oil
6 weeks = 6*7 = 42 days
42 days use: 42 * 285 = 11970 barrels of oil
Hope this help you :3
Answer:
A cow possess 4 legs.
So, 30 of them will have 4 × 30= 120 legs
Option 3
Answer:
x=8
Step-by-step explanation:
The ratio of a side of PQRS to the corresponding side in TUVW. is 6:4=3:2.
The ratio of RS:VW=3:2. RS=12, and VW=x. 12:x=3:2. 3 multiplied by 4 is 12, so 2 multiplied by 4 is x. So, the makes x=8.
Solution :
Group Before After
Mean 693.75 743.75
Sd 155.37 143.92
SEM 54.93 50.88
n 8 8
Null hypothesis : The preparation course not effective.

Alternative hypothesis : The preparation course is effective in improving the exam scores.
(after - before)
The next number would be 8+13 = 21