Answer:
5
Step-by-step explanation:
an = an_(n - 1) - 5
a2 = a1 - 5
a2 = 20 - 5
a2 = 15
===========
a3 = a2 - 5
a3 = 15 - 5
a3 = 10
============
a4 = a3 - 5
a4 = 10 - 5
a4 = 5
I think the question would be, In an auto race which is 25,000 meters, there are ten laps covered. How long is the first lap, and what is the percentage of the lap to the total distance?
So that the calculation will be
25000/ 10 = 2500 m (Length of the first lap)
the percentage of the lap to the total distance
(2500/25000) × 100 = 10 %
Answer:
you have a 50% chance of getting an odd number and a 60% chance of getting a number less than 26.
Step-by-step explanation:
Between 1 and 40 there are 20 odd numbers
20÷ 40 x 100=50, This means you have a 50% (20:20) chance of getting an odd number.
Between 1 and 40 there 25 numbers less than 26
15÷25 x 100=60, This means you have a 60% (25:15) chance of getting a number under 26.
Answer:
-10
Step-by-step explanation:
f(n)= f(n-2)+f(n-1)
• Put n = 3
=> f(3) = f(3-2) + f(3-2)
=> f(3) = f(1) + f(2)
=> f(3) = -6 + -4
=> f(3) = -10