Answer:
0.5+1.1+1.7+2.3+2.9+3.5+4.1+4.7+5.3+5.9+6.5+7.1+7.7+8.3+8.9+9.5+10.1+10.7+11.3+11.9
Step-by-step explanation:
tell me if this isn't 20 terms
= 124
The sum to n terms of an arithmetic series is
= [ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Here a₁ = 0.5 and d = a₂ - a₁ = 1.1 - 0.5 = 0.6 , then
= [ (2 × 0.5) + (19 × 0.6) ]
= 10 (1 + 11.4 )
= 10 × 12.4
13.2
90% of the milkshakes had whipped cream because 90/100 as a percentage is 90%
n = 5
100,000 = 10^n
Take the log of both sides
log 100,000 = log 10^n
log 100,000 = n * log 10
Dividing both sides by log 10
log 100,000 / log 10 = n * log 10 / log 10
n = log 100,000 / log 10
= 5 / 1
In 5 years, you will have $1,288.48
