Step-by-step explanation:
2x +34 =64
2x=30
X=30/2
X=15
Step-by-step explanation:
(5)(-x)
= -5x
multiply both and put the minus /(-) there
The formula of arithmetic sequence is
an = a₁ + d(n - 1)
Then we need to find the formula to determine n. I reverse the equation so the 'n' will be on the left side.
a₁ + d(n - 1) = an
Then I move all the terms on the left one by one to the right side except n
a₁ + d(n - 1) = an
d(n - 1) = an - a₁
n - 1 = (an - a₁)/d
n = 1 + (an - a₁)/d
This is the formula to solve n
n = 1 + (an - a₁)/d
Answer:
the distance between A and C
