When solving the proportion x−26=1x+3, santos first starts by using the cross product property, multiplying the extremes and the means, to get 6=x2+x−6. then, he subtracts 6 from both sides of the equation 6=x2+x−6 and finds the equation 0=x2+x−12. part a: what should santos do next to solve the equation? part b: what is/are the solution(s) to the proportion? select one answer for part a, and select all answers that apply for part b.

  A: factor the equation to (x -3)(x +4) = 0

  B: solutions are x=-4, x=3

Step-by-step explanation:

A: Santos has the equation in standard form. Several options for solution are available: graphing (see attached), completing the square, factoring, using the quadratic formula. I find factoring to get to the solution most directly. The other methods work just as well.

To factor the equation, Santos needs to find two factors of -12 that have a sum of +1. Those would be +4 and -3. Putting these numbers into the binomial factors, Santos would have ...

  (x +4)(x -3) = 0

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B: The values of x that make the factors zero are ...

  x = -4, x = 3

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6