Trig

What is the solution set of the inequality x^2-x>20?
a)x>5
b)-4<x<5
c)x>5 or x<-4
d)x>0

  1. 👍
  2. 👎
  3. 👁
  1. Factor x^2 -x -20 = 0

    There are zeroes at x= 5 and x = -4.
    In between -4 and 5, x^2 -x is less than 20. Therefore the answer is not b)

    Take it from there

    1. 👍
    2. 👎
  2. please help more

    1. 👍
    2. 👎
  3. The Answer in c - x>5 or x<-4
    as when x is less than -4 the inequality holds true as well as when x is greater than 5 it is still true.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra 1

    Write the solution to the inequality in set-builder notation. 5r + 8 < 63 {r | r < 11}** {r | r < 15} {r | r < 71} {r | r < 8}

  2. Algebra

    1. Choose the correct solution in roster form. N is the set of natural numbers that are factors of 12. {1, 2, 3, 4, 6} {1, 2, 3, 4, 6, 12} {1, 2, 3, 4, 5, 6, 8, 12} *this is my answer {1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12} 2. Write

  3. math

    which of the ff. coordinates of points belong to the solution set of the inequality y

  4. Math

    y - 6 ==> 12 Solve the inequality and describe the solution set

  1. Algebra 2

    solve the inequality. Graph the solution set. 5r + 4 is less than or equal to 5

  2. algebra

    Solve the inequality graph the solution set 26+6b>2(3b+4) answers are. All real numbers, b11/2, no solution thanks

  3. Algebra

    Write the solution set of the inequality |x + 2| < 5 in the interval notation.

  4. mathematics

    Write and graph an inequality for the given solution set. {x∣x

  1. Math

    Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3

  2. Math

    Write the solution to the inequality in set-builder notation. 9t-4>32 a. {t|t>4} b. {t|t>6} c. {t|t>28} d. {t|t>36}

  3. Algebra

    Which inequality represents the solution set for the compound inequality below? -3

  4. Math

    1. Which number is a solution of the inequality? 10.68 A)-5 B)-6 C)6*** D)7 3. Which number is a solution of the inequality? 12 < y ( 8 - y ) A. 0 B. 1 C. 2 D. 3*** 4. If N is the set of natural numbers that are factors of 24,

You can view more similar questions or ask a new question.