Answer:
Step-by-step explanation:
<u>Given AP with:</u>
- a₁= 28, aₙ = 79, Sₙ = 963
<u>Use the formula:</u>
- Sₙ = 1/2n(a₁ + aₙ), sum of the first n terms
<u>Substitute given values and solve for n:</u>
- 963 = 1/2n(28 + 79)
- 963 = 1/2n(107)
- 1/2n = 963/107
- 1/2n = 9
- n = 9*2
- n = 18
Answer:
-3,9
Step-by-step explanation
2 to -4 would take 6 units down and 8-1 is 7 and 7+2 is 9.
hope this helps!
Step-by-step explanation:
50-3n
or,50=3n
or,50/3=n
or,n=16.67
Thus,the value of n is 16.67.
Answer: The 4 answers are x=18, x=3, x=48, x=81 1/2.
Step-by-step explanation: Isolate the variable by dividing by each side by factors that don't contain the variable.