Answer:
5
Step-by-step explanation:
We are given the geometric series:
-1, - 2, - 4, - 8.......
In the geometric series above, the common ratio = second term/first term = -2/-1
= 2
Where common ratio is greater than 1(r >1)
The sum of a geometric progression =
Sn = a(rⁿ -1)/r - 1
In the question we are asked to find the number of term = n
Sn = -31
a = -1
r = 2
Hence,
-31 = -1(2ⁿ - 1)/2 - 1
-31 = -1(2ⁿ - 1)
-31 = -2ⁿ + 1
2ⁿ = 1 + 31
2ⁿ = 32
2ⁿ = 2^5
n = 5
Therefore, the number of terms(n) = 5
Answer:
83%
Step-by-step explanation:
100% - 17% = 83%
Cutting the number of pages by 17% leaves 83% of the original number of pages.
I will give you 2 points.
y+1=1/3(x-3)
y+1=1/3x-1
y=1/3x-2
If x=0:
y=0-2
y=-2
(0,-2)
If x=3
y=3*1/3-2
y=1-2
y=-1
(3,-1)
Answer: 14 7/8
Step-by-step
I put the 4 1/4 into an improper fraction then did keep change flip
Answer:
D
Step-by-step explanation:
The definition a triangle is a shape with three angles and three sides. An example of something in the shape of a triangle is a piece of pizza.
