B. 361/4
you get: x^2-19x+361/4=(x-19/2)^2
Answer:
651.
Step-by-step explanation:
Note: In the given series it should be -29 instead of 29 because 29 cannot be a term of AP whose first term is 91 and common difference is -6.
Consider the given series is
It is the sum of an AP. Here,
First term = 91
Common difference = 85 - 91 = -6
Last term = -29
nth term of an AP is
where, a is first term and d is common difference.
Sum of AP is
Therefore, the sum of given series is 651.
Answer:
3 inch
Step-by-step explanation:
1 inch = 3 feet
12 feet = x
x = 12/3
x = 3
Answer: C. 78
Step-by-step explanation: Good luck! :D
There are 12 inches in a foot, there are 6 feet. 6 x 12 = 72
1/2 of a foot is 6 inches. 72 + 6 = 78!