Which sequences have a common ratio of 1/4
choose exactly two answers that are correct

a. -8, 2, -1/2, 1/8, -1/32
b. 3, 12, 48, 192, 768
c. -1/5, -1/20, -1/80, -1/320, -1/1280
d. 320, 80, 20, 5, 1.25

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Need same math paper but the back now i hope your able to read it cleary i need with hw

Idon't want to fail summer school.the probabilities of contamination in medicine capsules due to the presence of heavy metals and different types of microbes are given in the table.the probability of capsule b having microbial contamination is (the same as, greater than, less than) the probability of capsule d having it.