Abag contains x blue chips and y red chips. if the probability of selecting a red chip at random is 3/7, then x/y = . 7/11b. 3/4c. 7/4d. 4/3e. 11/7

D.

Step-by-step explanation:

We have been given that a bag contains x blue chips and y red chips. The probability of selecting a red chip at random is 3/7. We are asked to find the .

Since we are told that probability of selecting a red chip at random is 3/7, so red balls are 3 and total balls are 7:

Since total balls are 7, so we will get:

Upon substituting in expression , we will get:

Therefore, the value of is and option D is the correct choice.

f

step-by-step explanation:

f

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a