What is the common ratio for the geometric sequence? −15,−9,−27/5,−81/ enter your answer in the box.

3/5

Step-by-step explanation:

to find the ratio, take the 2nd term and divide by the first term

-9/-15  = 9/15

which simplifies to 3/5

check by dividing the 3rd term by the 2nd term

-27/5  / -9

-27/5 * -1/9 = 3/5

the ratio is 3/5

i understand basic  sinxsin⁡x  and  cosxcos⁡x  min/max, but i am having a problem solving the minimum and maximum of the following:

f(x)=sin2x−sinxf(x)=sin2⁡x−sin⁡x

oh, and the range is  0≤x≤3π2