A1 or just a as it is in the equations is just the initial term of the sequence. In this case a1=1
r is the common ratio which is that constant ratio found by dividing any term by the term preceding it...
In this case r=3/1=9/3=27/9=etc=3
So a1=1 and r=3, C. is your answer.
Summing to zero means the two numbers are additive inverses, i.e. negatives of each other. We choose the pair of negations:
Answer: -3, 3
to just find the tip amount, multiple 24 by .15 (since percents are just the number divided by 100) to get the answer (3.60) or for the total multiple the amount by 1.(whatever the percent is), or in this case 1.15 to get the answer (27.60)
Answer:
Step-by-step explanation:
Given
Required
Solve for x
Add 7 to both sides
Multiply through by 6
