Answer:
20-15z
Step-by-step explanation:
-1+21-15z
20-15z
The number of terms, 'n' is 8
<h3 /><h3>How to determine the number of terms</h3>
Let's determine the common ratio;
common ratio, r = 3/1 = 3
The formula for sum of geometric series with 'r' greater than 1 is given as; Sn = a( r^n - 1) / (r - 1)
n is unknown
Sn = 3280
Substitute the value
3280 = 1 ( 3^n - 1) / 3- 1
3280 = 3^n -1 /2
Cross multiply
3280 × 2 = 3^n - 1
6560 + 1 = 3^n
6561 = 3^n
This could be represented as;
3^8 = 3^n
like coefficient cancels out
n = 8
Thus, the number of terms, 'n' is 8
Learn more about geometric series here:
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Answer:
$ 15.00
Step-by-step explanation:
9.95 is JUST about 10
5.25 is close to 5
10 + 5 = 15
Answer:
<h2>8 times greater</h2>
Step-by-step explanation:
The formula of a volume of a cube:
a - edge length
-----------------------------------
The edge length of cube B is a.
The edge length of cube A is 2a.
Calculate the volumes:
How many times greater is the volume of the cube A than the volume of cube B?
Make the quotient:
