its the first one because you would have 3 left over.
Answer:
The equation would be x + 2y = -8
Step-by-step explanation:
To find the standard form of this line, start by using point-slope form with the given information. Then solve for the constant.
y - y1 = m(x - x1)
y + 3 = -1/2(x + 2)
y + 3 = -1/2x - 1
1/2x + y + 3 = -1
1/2x + y = -4
x + 2y = -8
Answer:
Step-by-step explanation:
Since you are multiplying the same thing by itself, it'll have an exponential value, so count the t's and that is your exponent. Don't forget the "-" sign.
an = a1r^(n-1)
a5 = a1 r^(5-1)
-6 =a1 r^4
a2 = a1 r^(2-1)
-48 = a1 r
divide
-6 =a1 r^4
---------------- yields 1/8 = r^3 take the cube root or each side
-48 = a1 r 1/2 = r
an = a1r^(n-1)
an = a1 (1/2)^ (n-1)
-48 = a1 (1/2) ^1
divide by 1/2
-96 = a1
an = -96 (1/2)^ (n-1)
the sum
Sn = a1[(r^n - 1/(r - 1)]
S18 = -96 [( (1/2) ^17 -1/ (1/2 -1)]
=-96 [ (1/2) ^ 17 -1 /-1/2]
= 192 * [-131071/131072]
approximately -192
