Answer:
Step-by-step explanation:
Given
i.e. 10 people
Required
Probability of being next to each other
First, we calculate the total possible arrangements (without any restriction)
If the three are to be next to each other,
First, we arrange the three
Now, the 3 will be seen as 1; so, we have a total of 8 people i.e. (1 + 7 others)
The arrangement is:
So, the total arrangement, when they have to be next to one another is:
The probability is:
Expand
Express as percentage
6.4 is the answer you are looking for! Hope that helps :))
Answer: a) 1,600
b) 35,000
c) 120,000
<u>Step-by-step explanation:</u>
First, round each number to one significant digit (the first digit).
Then multiply them.
a) 17 --> rounds to 20
82 --> rounds to 80
20 x 80 = 2 x 8 with two zeros
= 1 6 0 0
b) 54 --> rounds to 50
671 --> rounds to 700
50 x 700 = 5 x 7 with three zeros
= 3 5 0 0 0
c) 207 --> rounds to 200
643 --> rounds to 600
200 x 600 = 2 x 6 with four zeros
= 1 2 0 0 0 0
Answer:
975 tickets
Step-by-step explanation:
1200 + 750 =1950/8 = 975
Answer:
1) x = 4
2) a square root cannot be equal to a negative value
Step-by-step explanation:
1) add 1 to each side
2) square each side
(√2x + 1)² = 3²
2x + 1 = 9
2x = 8
x = 4
2) subtract 4 from each side
√2x + 1 ≠ -5
