Answer:
Step-by-step explanation:
<u>According to sequence we observe:</u>
- the first term is a₁ = 1
- the common ratio is r = 2/7
<u>Equation of nth term of GP:</u>
<u>Substitute to get:</u>
- aₙ = 1*(2/7)ⁿ⁻¹ = (2/7)ⁿ⁻¹
Correct choice is A
Its adding the current number by the previous number so the next three would be 21,34,55
C. 0.4 times 6 is 2.4. Hope that helps.
Answer: <em>33 square feet</em>
Step-by-step explanation:
<em>First, let's take the area of the rectangle shown here which is 6ft long and 4ft wide</em>
<em>6x4=24</em>
<em>Now let's take the area of the square which is 3ft long and 3ft wide</em>
<em>3x3=9</em>
<em>Now add 24 and 9 for the total area</em>
<em>24+9=</em><em>33 square feet</em>
(x-12)(x-1) is the answer.
