Because two fractions are equal fractions when they represent the same part of a whole. if denominators are different you need to first equal the denominator then further proceed to solve
Sn=sum of the n terms of the geometric sequence.
a= the first term
r=the common ratio
n=numbers of terms.
Sn=a[(1-r^n)/(1-r)]
In this case:
a=-3
r=a₂/a₁=15/-3=-5
n=9
S₉=-3[(1-(-5)⁹) / (1-(-5))=
S₉=-3(1+1953125)/6)=
S₉=-3(1953126/6)=
S₉=-3(325521)
S₉=-976563
Answer: A. -976563
Answer:
The vertical change
Step-by-step explanation:
The vertical change between two points is called the rise, and the horizontal change is called the run. The slope equals the rise divided by the run: . This simple equation is called the slope formula.
Answer:
4,8,6
Step-by-step explanation:
replace x with 0
multiply 4 and 0
divide each term by 2
simplify
repeat with -2 and -1
5(4x-1) = 80
20x - 5 = 80
20x - 5 + 5 = 80 + 5
20x = 85
20x/20 = 85/20
X = 85/20
X = 17/4 if reduced to lowest terms by dividing both the top and bottom number by 5.
