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mixer [17]
3 years ago
11

The height of a cone-shaped container is 15 centimeters and its radius is 14 centimeters. Kate fills the container completely wi

th honey. Every day Kate uses 40 cubic centimeters of honey from the container to make honey cookies. After how many days will the container be completely empty? Round your answer to the nearest whole number. (Use π = 3.14.)
Mathematics
2 answers:
lesantik [10]3 years ago
7 0
The volume of the cone with radius r=14 cm and height h=15 cm is,
V= \frac{1}{3}  \pi r^2h =  \frac{1}{3}  \pi *14^2*15 = 3077.2~cm^3

Each day 40 cm^3 is subtracted from the volume. So the volume of honey left after [d] number of days would be the starting volume minus 40 times number of days passed.
V left=V start-40*d
V left = 3077.2 - 40d

It asks when the volume will be empty, The volume left is zero after how many days?
0 = 3077.2 - 40d
d=76.93 days,  or 80 days rounding to whole numbers.
7nadin3 [17]3 years ago
3 0

Answer:


Step-by-step explanation:

the answer would actually be 76.93 when rounded it comes to 77 so that would be the answer

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We have:

A philanthropist pledges to donate 10% of a fund each year.

We can find the amount left after 7 years as follows:

A = 450000(1 - 0.1)⁷

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Need help with question 15
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Answer:

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Step-by-step explanation:

Part 15) we know that

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1.

Let the sandwich be represented by = x

Let the drink be represented by = y

As given, Joe charges $10.00 for two sandwiches and one drink, so equation becomes 2x+y=10    ....(i)

He charges $6.50 for one sandwich and one drink, so equation becomes x+y=6.50  ....(ii)

Subtracting (ii) from (i) we get

x=3.50

And as x+y=6.50

y=6.50-3.50=3.00

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2.

the question is incomplete. coordinates are missing

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Let us take x for 20% material, y for 50% material

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