Four positive numbers form a geometric sequence. the sum of the four numbers is one more then the common ratio. if the first number is 1/10, find the common ratio.

r=3 where r is the common ratio

Step-by-step explanation:

The sum of geometric progression for n terms is given by:

, where is the

first term of the series and r is the common ratio.

Now, according to the question, there are four terms and they form a geometric progression. So sum of four terms is given as and .

Also according to the above formula:

Using the values as given in the question into the above equation we get:

[ Using formula ]

which is the required answer.

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation:

it is 570

step-by-step explanation: