Question

найдите знаменатель геометрической прогрессии если b1=250, b4=-2 заранее спасибо!!!

Answer 1

b1= 250 

b4= -2 

b4= b1*q^3

q^3=b4/b1

q^3= -2/250

q^3= - 1/125

q= -1/5

Answer 2

Finding the Common Ratio of a Geometric Progression

To find the common ratio (r) of a geometric progression when given the first term (b1) and the fourth term (b4), we can use the formula:

b4 = b1 * r^3

Given: - b1 = 250 - b4 = -2

We can use the given values to solve for the common ratio (r).

Calculation

Using the formula b4 = b1 * r^3, we can solve for the common ratio (r):

- -2 = 250 * r^3

Now, let's solve for r:

- r^3 = -2 / 250 - r^3 = -0.008 - r = (-0.008)^(1/3)

Result

The common ratio (r) of the geometric progression is approximately -0.464.