<u>Answer:</u>
The correct answer option is B.
.
<u>Step-by-step explanation:</u>
The following is the formula that is used to find the sum of a geometric progession:
![S _ n = a _ 1 [ \frac { 1 - r ^ n } { 1 - r } ]](https://tex.z-dn.net/?f=%20S%20_%20n%20%3D%20a%20_%201%20%5B%20%5Cfrac%20%7B%201%20-%20r%20%5E%20n%20%7D%20%7B%201%20-%20r%20%7D%20%5D%20)
where
is the sum,
is the first term,
is the common ratio while
is the number of terms.
Answer:
12
Step-by-step explanation:
7/9 x 27 - 18 + 1/3 x 27
Express 7/9 ×27 as a single fraction.
7 x 27 / 9 - 18 + 1/3 x 27
Multiply 7 and 27 to get 189.
189/9 - 18 + 1/3 x 27
Divide 189 by 9 to get 21.
21 - 18 + 1/3 x 27
Subtract 18 from 21 to get 3.
3 + 1/3 x 27
Multiply 1/3 and 27 to get 27/3.
3 + 27/3
Divide 27 by 3 to get 9.
3+9
Add 3 and 9 to get 12.
12
Answer:
56
Step-by-step explanation:
Answer: 20% increase
Step-by-step explanation:
Think about it this way 1/5 of 100 is 20. 1/5 of 15 is 3. So 15+3=18