Answer:
r = nT-n
Step-by-step explanation:
- T = 1 + r/n
- T-1 = r/n
- n(T-1) = r
- nT-n = r
Answer:
2 (real) solutions.
Step-by-step explanation:
A quadratic always has two solutions, whether they are real or complex.
Sometimes the solution is complex, involving complex numbers (2 complex), sometimes they are real and distinct (2 real), and sometimes they are real and coincident (still two real, but they are the same).
In the case of
x^2+3x = 3, or
x² + 3x -3 = 0
we apply the quadratic formula to get
x = (-3 +/- sqrt(3^2+4(1)(3))/2
to give the two solutions
{(sqrt(21)-3)/2, -(sqrt(21)+3)/2,}
both of which are real.
Answer:
25%
Step-by-step explanation:
4+3+5=12
3/12 ×100=25
Answer:
n>-15 or c
Step-by-step explanation:
The sum of a geometric series is given by:
Sn=[a(r^n-1]/(r-1)
the nth term is given by
an=ar^(n-1)
From the information given:
a1=0.28, r=6
the sum of the first 5 terms will be:
s₅=[0.28(6^5-1)]/(6-1)
s₅=[0.28(7776-1)]/5
s₅=2177/5
s₅=435.4