The correct answer is A.) { - 0.79 ; 1.08 }, because
 For ax^2 + bx + c = 0, the value of x is given by: ;
a = - 7 ; b = 2 ; c = 6 ;
b^2 - 4ac = 4 + 168 = 172 ; $\sqrt{172}$ ≈ 13.11 ;
x 1 = ( - 2 + 13.11 ) / (- 14) = 11.11 / ( - 14 ) ≈ -0.79 ;
x = 2 = ( - 2 - 13.11 ) / ( - 14 ) = (-15.11) / (- 14 ) ≈ 1.08 ;

5 0

3 years ago

X² +12x+27 = 0 Find the roots of each equation by factoring

Setler79 [48]

Answer:

x = -9, -3

Step-by-step explanation:

${x }^{2} + 12x + 27 = 0$

$(x + 3)(x + 9) = 0$

x = -3, -9

5 0

2 years ago

Read 2 more answers

A random sample of 25 college statistics textbook prices is obtained and the mean price is computed. To determine the probabilit

Lubov Fominskaja [6]

Answer:

We need to refer to the population distribution of all college statistics textbook prices.

Step-by-step explanation:

From the given information;

We are being given the sample size and the mean that has already been computed. Thus, to determine the probability of a more extreme mean, we need the t-test statistics value. In this case, we will need the sample mean, thus we need to refer to the population distribution of all college statistics textbook prices.

4 0

3 years ago