If (3a-5b) : (3a+5b)=1:4 then find the value of a:b​

Identify the number 127 as a rational or irrational. explain

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "