In a race brian collins has to cross 10 hurdles. find the probability that he jumps a hurdle is 2/3. find p(knocks down all hurdles)

 Option 'a' is correct.

Step-by-step explanation:

Since we have given that

Probability that he jumps a hurdle =

Total number of hurdles = 10

Probability that he knocks down =

So, Probability (knocks down all hurdles ) is given by

Hence, Option 'a' is correct.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

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