Solve the system using the addition method. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x. x - 2y = 1-7x - 3y = -75
A. (-9, 5)
B. (8, 5)
C. (9, 4)
D. Inconsistent, ?
Answer: C
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Answer the question.Suppose that a test for a disease correctly gives positive results for 95% of those having the disease and correctly gives negative results for 90% of those who don't have the disease. Suppose also that the incidence of the disease is 1%. If a person tests positive for the disease, what is the chance that they have the disease? Find the exact percentage.
A. 8.8% B. 13.4% C. 95% D. 10%
Provide an appropriate response.Factor the polynomial completely: 7x2 - 19x - 6
A. 7(x - 2)(x - 3) B. 7(x2 - 19x - 6) C. (7x - 2)(x - 3) D. (7x + 2)(x - 3)
Use the quadratic formula to solve the equation.8y2 + 30y + 25 = 0
A. - 
, - 
B. - 
, - 
C. 
, 
D. 
, - 
Provide an appropriate response.If the original price for an item was $5.50 and it increased by 100%, the new price is $12.00.
A. True B. False