Answer:
5.7% per year
Step-by-step explanation:
For an ordinary annuity, the final amount can be calculated by:
Where A is the final amount, R is the value invested monthly, r is the annual interest, n is the number of months in a year, and t the time in years. So:
(\frac{(1+\frac{r}{12} )^{156}-1}{\frac{r}{12} }) = 230.39
(\frac{(1+\frac{r}{12} )^{156}-1}{r}) = 19.2
Solving that in a graphic calculator,
r = 0.057
r = 5.7% per year
1,200(1.039)^.66666
1200(<span>1.02583386437)
$1231.00
</span>
Answer:
65
Step-by-step explanation:
TAB is an isosceles triangle by the point to tangent theorem theorem.
BAT and BAT are congruent because of the isosceles triangle definition.
CAT and ABT are right angles by the tangent theorem.
Thus, CAB and CBA are both 90 - 65 = 25.
ACB is 130 because triangles' angles add up to 180.
APB is one half of ACB by the inscribed angles theorem.
<span>
$230,000 in bank A, $240,000 in bank B, $220,000 in bank C
</span>
Answer: B: n^2+6n+1
Step-by-step explanation:
A=n
B=2n+6
C=n^2-1
AB-C
n(2n+6)-n^2-1
2n^2+6n-n^2+1
n^2+6n+1
