Using the quadratic formula, which of the following is the solution to the quadratic equation x2 - 3x - 28 = 0? a. x = -7, -4 b. x = 7, 4 c. x = -7, 4 d. x = 7, -4

The answer is (x+7)(x-4)

hence, the solution should be C

x = [ -)-3)  +/- sqrt((-3)^2 - 4*1*-28) ] / 2

=  (3 + sqrt 121) / 2   and (3 - sqrt 121) / 2

= 3/2 + 11/2  and 3/2 - 11/

= (1.5 + 5.5)   and 1.5 - 5.5

Answer is 7, -4

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.

step-by-step explanation: