Question

HELP!!! ARE THESE CORRECT?

Answer 1

Question 2.2. 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


Question 3.3. 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}


Question 4.4. 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

2. A
3.B
4.A
THESE ARE THE ANSWERS I CHOSE

Answer 3

I think you are not correct.
Let me solve 2

Answer 4

Ok thanks

Answer 5

\[8-2\left| n+5 \right|\ge 4\]
\[-2\left| n+5 \right|\ge4-8\]
\[\left| n+5 \right|\le \frac{ -4 }{-2 },\left| n+5 \right|\le2,-2\le n+5 \le2\]

Answer 6

so number to is C?

Answer 7

yes

Answer 8

what about the other two?

Answer 9

\[3.\left| k+9 \right|=4\]
\[k+9=\pm4\]
can you solve it?

Answer 10

i really dont understand how to solve it. is there a formula?

Answer 11

k+9=4
k=4-9=-5
and k+9=-4
k=-4-9=-13
solution set is {-13,-5}

Answer 12

\[4+\left| t+2 \right|<11,\left| t+2 \right|<11-4,\left| t+2 \right|<7\]
-7<t+2<7
-7-2<t+2-2<7-2
-9<t<5

Answer 13

thanks

Answer 14

\[If \left| x+a \right|\le b,then-b \le x+a \le b or x+a lies between -b and b\]
\[If \left| x+a \right|\ge b,\]
\[then x+a \le -b and x+a \ge b\]
orx+a does not lie between -b and b

Answer 15

yw