First we need to find the common ratio by dividing the second term by the first term. 36/120 = 3/10
an = a1 * r^(n-1)
n = term to find = 5
a1 = first term = 120
r = common ratio = 3/10
now we sub and solve
a5 = 120 * 3/10^(5 - 1)
a5 = 120 * 3/10^4
a5 = 120 * .0081
a5 = 0.972 <=== fifth term
or we could have just done this......since we multiply by 3/10 to find the next number...
a3 = 10.8......10.8 * 3/10 = 3.24 <== 4th term
3.24 * 3/10 = 0.972 <== fifth term
Answer:
161 cm
Step-by-step explanation:
The door opening is 2 meters high, so to compare the gap and Casey's height, you need to first convert the meters to centimeters. Since there are 100 centimeters in 1 meter:
where 'x' is the number of centimeters
100(2) = x or x = 200 cm
From the total height of the door (200cm), there is a 29 cm gap to the top of Casey's head:
200 - 39 = 161cm, so Casey must be 161 cm tall.
Answer:
solution
Step-by-step explanation:8 days