Let
, so that
,
, and
. Then
Now let
, so that
. Then
Transform back to
to get
and again to get back a result in terms of
.
Answer:
A. Infinitely many solutions
Step-by-step explanation:
x − 2y = 5 | × (- 2)
2x − 4y = 10
- 2x + 4y = - 10
2x - 4y = 10
----------------------- +
- 2x + 2x + 4y - 4y = - 10 + 10
0 = 0
A. Infinitely many solutions
assuming 7/10 eom means 7 - 10 days after, your answer would be A. April 18th, 2012.
5.88%, 1 pound? I’m not sure
Using an=a1rn−1, what is the 10th term in this geometric sequence? 0.2, 1, 5, 25, 125, ... f 1,953,125 g 9,765,625 h 390,625 j 7
RSB [31]
Use the formula a(n) = a(1)*r^(n-1), where r is the common factor and n is the counter.
The first term, a(1), of <span>0.2, 1, 5, 25, 125, ... is obviously 0.2. Note that multiplying 0.2 by 5 gives us 1; mult. 5 by 5 gives us 25, etc., so the common factor r is 5.
Thus, a(n) = a(1)*r^(n-1) becomes a(n) = 0.2*(5)^(n-1), and
a(10) = 0.2*(5)^(10-1), or 0.2*5^9, or 0.2(1953125), or 390625 (answer)</span>