Answer:
x=−50
Step-by-step explanation:
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:
y+2= -4(x-8)
Step-by-step explanation:
Answer:
37 miles an hour
Step-by-step explanation:
you set up a ratio
100/62 on left 60/x on right
cross mult and get 100x=60(62)
100x=3720
x= 37.2