I've heard this before, submit the rest and I will attempt to solve.
Answer: 405
Step-by-step explanation:
ratio r for the geometric sequence: 5, 15, 45, 135
r is a radios of a circle,
d is the Diameter
r1=5. r2=15, r3=45, r4=135, r5=?
2*r=d
so:
d1=10, d2=30, d3=90, d4= 270
now following the sequence:
r1+d1=r2 5+10=15
r2+d2=r3 15+30=45
r3+d3=r4 45+90=135
r4+d4=r5 therefore 135 + (135*2) = 135+270=405
Answer:
How to Round to the Nearest Feet (Step-by-Step)?
First and foremost, identify the given feet number.
Now, look at the digit that we have to round off which is the first digit after the decimal point.
If that value is between 0 to 4, then leave the digit we care for and trim all digits to the right.
Step-by-step explanation:
To find the common ratio in a geometric sequence, u divide the second term by the first term. 20/80 = 1/4 <== common ratio
Terms are found in a geometric sequence by multiplying each number by the common ratio to get to the next number.
start with 80
80 * 1/4 = 80/4 = 20
20 * 1/4 = 20/4 = 5
5 * 1/4 = 5/4
5/4 * 1/4 = 5/16 <===
5/16 * 1/4 = 5/64 <===
5/64 * 1/4 = 5/256 <===
The answer to the question is 15
