- 6 + 6(2- 12) divided by (-15) please and thank you

4.4

Step-by-step explanation:

-6 +12-72

6-72

-66÷(-15)

4.4

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225