What is the nth term rule of the quadratic sequence below? -5, -3,3, 13, 27, 45, 67, ...
2 answers:
Answer:
Step-by-step explanation:
a +b + c = - 5 First term in sequence
3a + b = 2 Difference between first two terms
2a = 4 Difference between the difference of the first two terms and the second third terms (the difference between -5 and -3 is 2 the difference between -3 and 3 is 6; the difference between 6 and two is 4)
2a = 4 so a = 2; 3(2) + b = 2 → 6 + b = 2 so b = -4; 2 - 4 + c = -5 → -2 + c = -5 so c = -3
You might be interested in
Answer:
5/33
Step-by-step explanation:
The table with proper formatting is attached in the image below.
We have to calculate the experimental probability that the next customer buys a red notebook with 150 pages.
Total number of customers in the experiment = Sum of all the values in the given table = 396
Number of customers who bought red notebook with 150 pages = 60
Experimental probability =
Number of favorable outcomes in the experiment were 60 and the total outcomes in the experiment were 396.
Therefore, the probability that next student buys a red notebook with 150 pages will be 60/396 = 5/33