She bought it at a 15% discount because 15 percent of 40 is 6 and 40-6=34
X57 I think no just doing this for points so made a random number lol
Answer:Yo puedo hablar español and i can speak english and Также я могу говорить по русски=i can also speak russian
Step-by-step explanation:
Answer:
30) A) 0 / 15 = 0
31) A) 0/28 = 0
Step-by-step explanation:
30)
0 / 15 = 0
15/0 undefined
15 + 0 = 15
15 - 0 = 15
Answer:
0 / 15 = 0
31) Answer: A) 0/28 = 0
Answer: Level of the liquid dropping at 28.28 inch/second when the liquid is 2 inches deep.
Step-by-step explanation:
Since we have given that
Height = 9 inches
Diameter = 6 inches
Radius = 3 inches
So, 
Volume of cone is given by

By differentiating with respect to time t, we get that

Now, the liquid drips out the bottom of the filter at the constant rate of 4 cubic inches per second, ie 
and h = 2 inches deep.

Hence, level of the liquid dropping at 28.28 inch/second when the liquid is 2 inches deep.