Step-by-step explanation:
the answer is in the above image
The appropriate formula here is l = a + (n-1)d, where l represents the last term.
Here the first term is -5 and the common difference is +4. Thus,
l = -5 + (n-1)(4) (answer)
Check: we are given the arith sequence -5, -1, 3, 7. Does our formula correctly predict the 1st term? l = -5 + (1-1)(4) = > -5. Yes.
Does it correctly predict the 3rd term? l = -5 +(3-1)(4) => -5+2(4) = 3. Yes
Answer:
20 glasses a day
Step-by-step explanation:
2.5litres equals 2500millilitres
2500÷125=20
Yes, this series converges. We can check using the integral test; we have
and
I= PRT
Interest = (Principal)(Rate)(Time in years)
320 = (4,000)(rate)(2)
320 = 8,000r
0.04 = r
Then convert to a percentage, and get 4%
