The formula for the sum of n terms in an arithmetic progression is:
S = n/2 * (2a + (n-1)d)
Here, the common difference, d, is 8 and the first term, a, is 1. Substituting these into the formula, we get:
S = n/2 * (2*1 + 8(n - 1))
S = n + 4n² - 4n
S = 4n² - 3n
The answer is A.
Answer:
3
Step-by-step explanation:
The map is <em>not a function</em> if any value of input maps to more than one value of output. We see that is the case in map D. The other three maps show functional relations.
3 mapping diagrams represent functions
Answer:
<h2>x = -2 or x = 2</h2>
Step-by-step explanation:
It seems you need 2 equations:
We first must solve for: distance = rate * time
Using return flight data: distance = 237 * 13 = 3,081 miles
Then, using flight TO Burbank data: time = distance / rate
time = 3,081 / 215 time = 14.3302325581 hours
