$\bf 3^{n+2}-3^n=8\cdot 3^n\implies \boxed{3^n\cdot 3^2}-3^n=8\cdot 3^n
\\\\\\
\stackrel{common~factor}{3^n}(3^2-1)=8\cdot 3^n\implies 3^2-1=\cfrac{8\cdot \underline{3^n}}{\underline{3^n}}\implies 3^2-1=8
\\\\\\
9-1=8\implies 8=8$

6 0

2 years ago

Suppose you invest $63 a month in an annuity that earns a 3.3% APR

lisov135 [29]

Answer: $3227.93 APEX

4 0

3 years ago

A real estate agent earns a 6% commission on each property she sells. If she sells a detached house for $200,000 and a cottage f

xz_007 [3.2K]

I think d is the answer

3 0

2 years ago

Choose all the angles which are adjacent to < 3<br> Select all that apply

morpeh [17]

Answer:

A and B

Step-by-step explanation:

Adjacent angles are angles that share a common vertex

More specifically adjacent angles are next to each other.

The two angles that are next to ∠3 are ∠4 and ∠2 therefore the correct answer would be A and B

8 0

2 years ago