What is the common ratio of the following geometric sequence?
2/5, -4/15, 8/45, -16/135, 32/
a.2/5
b. -2/5
c. -2/3
d. 2/3

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.