Question

1. State a conjunction or disjunction equivalent to the open sentence |a – 9| ≤ 4.
(Points : 1)
a – 9 ≥ 4 and a – 9 ≤ –4
a – 9 ≤ 4 or a – 9 ≥ –4
a – 9 ≥ 4 and a – 9 ≤ –4
a – 9 ≤ 4 and a – 9 ≥ –4
HELP!!!

Answer 1

2. State a conjunction or disjunction equivalent to the open sentence.

8 – 2|n + 5| ≥ 4
(Points : 1)
n + 5 ≥ 2 and n + 5 ≤ –2
n > –3 or n < –7
n + 5 ≤ 2 and n + 5 ≥ –2
n < –3 or n > –7


3. Solve the equation. |k + 9| = 4
(Points : 1)
{–13, –5}
{–5, 5}
{–5, 13}
{all real numbers greater than or equal to –13 and less than or equal to –5}


4. Solve the inequality. 4 + |t + 2| < 11
(Points : 1)
t < 5 and t > 9
t > 5 or t < –9
–5 < t < 9
–9 < t < 5

Answer 2

It means that a-9 must be between -4 and 4.

You select which of the choices represents the concept that a-9 is between -4 and 4.

Answer 3

Second question: Take whats inside the absolute value and set it equal to 4 and - 4.
Because the absolute value of -4 is 4, and the absolute value of 4 is 4.

Answer 4

Your #4, is the same as your first one.