Most people perceive an increase of 10dB as a doubling in volume of a sound. How many times louder would a 70-dB sound appear to be when compared to a 40-dB sound? Explain your answer.
help pls

What could explain what happened when the time was equal to 120 minutes

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups