Question

Algebraic expression of an arithmetic sequence is 3n + 2.
a) Find the sum of first 10 terms.
b) Write the algebraic expression of the Sum.​

Answer 1

Answer:

$3x + 7y = 65 Solving 3x + 7y = 65 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7y' to each side of the equation. 3x + 7y + -7y = 65 + -7y Combine like terms: 7y + -7y = 0 3x + 0 = 65 + -7y 3x = 65 + -7y Divide each side by '3'. x = 21.66666667 + -2.333333333y Simplifying x = 21.66666667 + -2.333333333y$