Round 23,556 to the nearest ten thousand

20,000

Step-by-step explanation:

So, the 2 is the ten thousand and the 3 is in the thousands. 4 or less means to round down so 23,556 rounds down to a 0 and change the rest to a 0. 20,000. If the number 23,556 had a 5 or more in the thousands, it would have rounded to 30,000 to the nearest ten thousands but it didn't so the answer is 20,000.

6e14 is the answer.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: