According to what your saying, the answer should be bradley got 4 more hours
Step-by-step explanation:
The grammar on this question is kind of bad so i might of misunderstood it but it should be 4 hours.
In any quadratic equation: ax² + bx + c = 0,
the discriminant is Δ = b² - 4.a.c
1) If Δ > 0 → we have 2 distinguished roots
2) If Δ = 0 → we have 2 EQUAL roots
3) If Δ < 0 → we have no real roots (we call the results imaginary or complex)
16x² +8x + 1 = 0
Δ = 8² - 4(16)(1) →Δ = 64 - 64 = 0
Since Δ = 0, we have 2 equal roots→ x' = x"
Solve the equation:
x' = [(-8)+√0]/2(16) = -8/32 = -1/4
x" = [(-8)-√0]/2(16) = -8/32 = -1/4
11.25/2.50 you get 4.5 feet. You can purchase 4.5 feet of candy.
The Most Logical Answer is B
Answer:
The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
For this problem, we have that:
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%
