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2 years ago

Helppppppppppppppp pleaseeeeee fasttttt with problem 4

Mathematics

2 answers:

V125BC [204]2 years ago

8 0

Which one is problem number 4?

grigory [225]2 years ago

4 0

3237=3229+ c
-3229
c= 8

equation would be y= 3229 + c

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A cylinder has diameter of 4ft and a height of 9ft. Explain whether halving the diameter has the same effect on the surface area

elena55 [62]

Answer:

See Below

Step-by-step explanation:

The surface area of cylinder is given by the formula:

$SA=2\pi r^2 + 2\pi r h$

Where

r is radius ( diameter is 4, so radius is 4/2 = 2)

h is height ( h = 9)

Lets find original surface are:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (9)\\SA=8\pi +36\pi\\SA=44\pi$

Halving diameter:

diameter would be 4/2 = 2, so radius would be 2/2 = 1

So, SA would be:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (1)^2 + 2\pi (1) (9)\\SA=2\pi +18\pi\\SA=20\pi$

Halving height:

Height is 9, halving would make it 9/2 = 4.5

Now, calculating new SA:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (4.5)\\SA=8\pi + 18\pi\\SA= 26\pi$

Original SA is $44\pi$ ,

Halving diameter makes it $20\pi$

Halving height makes it $26\pi$

So, halving diameter does not have same effect as halving height.

5 0

2 years ago

In the cafeteria, 100 milk cartons were put out for breakfast. At the end of breakfast, 27 remained. 1.What is the ratio of milk

goldenfox [79]

1. The ratio of milk cartons taken to total milk cartons,
100 - 27 = 73 were taken
73/100 is the ratio of milk cartons taken to total milk cartons

2. The ratio of milk cartons remaining to milk cartons taken
27 / 73 is the ratio of milk cartons remaining to milk cartons taken

7 0

2 years ago

18,932,612-9,096,089

LekaFEV [45]

Answer:

9836523 is the answer

5 0

2 years ago

Read 2 more answers

Isaiah brought two dozen donuts to a class party. Half of the donuts had vanilla frosting with sprinkles, 2 had strawberry frost

bearhunter [10]

22 donuts had sprinkles.
So 22/24 simplifed to 11/12.