1/4(9-12)+1/3(9+9) what is the answer can you me

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

What are the soultion(s) to the quadratic equation 40- x^2=0

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?