Answer:
420
Step-by-step explanation:
The number of students in the school is unknown, so we'll call it x.
55% of the number of students are girls.
There are 321 girls.
55% of x = 231
0.55x = 231
x = 231/0.55
x = 420
Answer: 420
Answer:
Step-by-step explanation:
<h3>Given GP</h3>
<h3>To find</h3>
<h3>Solution</h3>
<u>nth term formula</u>
- aₙ = a₁rⁿ⁻¹, where r- common ratio, n- number of the term
<u>We have</u>
- a₁ = -9
- r = 27/-9 = -81/27 = -3
<u>Find a₁₂</u>
- a₁₂ = (-9)*(-3)¹¹ = 1594323
Correct choice is B