answersLogoWhite

0

yn = 1/2n2 + 2 1/2n + 3

y9 = 1/2(9)2 + 2 1/2(9) + 3

y9 = 40 1/2 + 22 1/2 + 3

y9 = 66

User Avatar

Wiki User

13y ago

What else can I help you with?

Related Questions

What number is next 5 10 15 10?

The Next NumberThe next number is 25 if you use the following pattern: 5, (the number 10), 15 (the first number +10), (the number 10), and the next number is the third number +10 or 25.or you could think of it this way:5, 10 (+5), 15 (+5), -5 (10)The pattern is +5, +5, -5, so the next number would be 15, the next 20, and the next 15.


What is the next number in the number pattern 3 6 10 15?

21: (3)+3=(6)+4=(10)+5=(15)+6=(21)


What is the number pattern for 10 4n-1?

is this question number 10? 4n - 1 creates the pattern 3, 7, 11, 15, 19, etc.


What is the next number in the sequence 5-10-15- 10?

there is not much of a pattern there but i would say 45


What is the pattern in 15 1.5 0.15 0.015?

Each consecutive number is being divided by 10


Which number is the next logical number in the following sequence of numbers 5 10 15 10?

5+5 = 10 10+5 = 15 15-5 = 15 10+5 = 15


What number increased by -10 is 5?

15. 5 - -10 = 5 + 10 = 15 → 15 + -10 = 15 - 10 = 5


What is 5 x 10 to the 9th power?

5 x 10 to the 9th power is equal to 5 billion. When you multiply 5 by 10 raised to the 9th power, you are essentially multiplying 5 by 1 followed by 9 zeros. This results in a large number that is commonly expressed in scientific notation as 5 x 10^9.


What would be the next number in this series 15 12 13 10 11 8?

What would be the next number in this series 15 12 13 10 11 8?


What is the rule for the number pattern 1 6 16 31?

The rule is 5, 10, 15 and so the next number will be 20+31 = 51


10 plus the quotient of a number and 15?

10 + 15a * * * * * No! It is 10 + n/15


Which number is next in the senquence 5 10 15 10?

5 10 15 10 5