Let 
be the constant factor between terms, so that
and so on, with
(notice how the exponent and the subscript add to 
)
Then
so if
then
Now,
so the third term in the sequence is 30.
Answer: x1=-2
x2=2
Step-by-step explanation:
5x²+4x-19=4x+1
5x²+4x-19-4x-1=0
5x²-20=0
5x²=20
x²=20/5
x²=4
x1=-√4=-2
x2=+√4=2
Answer:
Below.
Step-by-step explanation:
{ a1 = 0.5
{ an = an-1*(-0.2)
The first 4 terms are:
= 0.5, -0.1, 0.02, -0.004
Answer: -(x+8)(x-8)
Step-by-step explanation:
-(x^2-64)
x^2-8^2x^2
x^2-8^2=(x+8)(x-8)
-(x+8)(x-8)
The number in the ten thousands place is 7
Look at the number in the place value next to it. It is a 5. Note that numbers 5 and greater round up, while 4 and lower round down.
103,080,000 is your answer
hope this helps
