Answer:
A. 4
Step-by-step explanation:
80 ÷ 20 = 4.
There will be 4 red balloons for each green balloon
Answer:
1.45 per ounce
Step-by-step explanation:
........................
Answer:

Step-by-step explanation:

Flip the equation:

Subtract 6 from both sides:


Divide both sides by 2:


Answer: (75, 135)
Step-by-step explanation:
Because the empirical rule is 3 standard deviations of the mean you would add and subtract to get your desired interval.
In this case our mean is 105 and our deviation is 10.
What you would do is add 10 to 105, 3 times to find your greatest number and the you would subtract 10 from 105, 3 times to get your lowest number.
105 + 10 + 10 + 10 = 135
105 - 10 - 10 - 10 = 75
Answer: (75, 135)