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3 years ago

What is the best approximation for the area of a circle with a diameter of 19 meters?

Mathematics

2 answers:

lakkis [162]3 years ago

7 0

Answer:

area = 283.39 m²

Step-by-step explanation:

r = 19/2 = 9.5

area = πr² = (3.14)(9.5²) = 283.39 m²

Talja [164]3 years ago

5 0

Area=3.14(r)^2
radius is half of diameter
3.14(9.5)^2=283.385
rounded is 283.39

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The top one is right!

Gnesinka [82]

Answer:

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Step-by-step explanation:

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2 years ago

Students attending the University of Florida can select from 130 major areas of study. A student's major is identified in the re

omeli [17]

Answer:

1. 8385 double majors

2. 18252 major codes

3. 8515 codes

4. Yes

Step-by-step explanation:

Given

Major areas = 130

Alphabets = 26

There are 130 major areas in the university.

To get a double majors, means one select any of two of the major areas in the university.

i.e. just 2 alphabets are needed

Number of Double Majors = 130C2

130C2 = 130!/(128!*2!)

130C2 = 130 * 129/2

130C2 = 8385.

Number of major codes available = Number of 2 digit codes + Number of 3 digit codes

Number of 2 digit codes = 2 alphabets

There are 26 ways of selecting the first letter

There are 26 ways of selecting the second letter

So, number of 2 digit codes = 26 * 26 = 676.

Number of 3 digit codes = 3 alphabets

There are 26 ways of selecting the first letter

There are 26 ways of selecting the second letter

There are 26 ways of selecting the third letter

So, number of 3 digit codes = 26 * 26 * 26 = 17576

Thus, number of major codes = 17576 + 676 = 18252

Number of codes to identify a student with either a single major or double major

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3 years ago

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Answer:

Step-by-step explanation:

We need to first rewrite the equation the proper way.

(-2x+4x²+5)-(x²+3x)

We need to distribute the negative thought the 2nd set of parenthesis.

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3x²-5x+5

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3 years ago

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Marizza181 [45]

Answer:

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Step-by-step explanation:

1 - 2/3 = 1/3

1/5 x 1/3 = 1/15 of the bill

1/15 of bill is paid by azuma

10/15 is by tom

so 1 - 10/15 - 1/15 = 4/15 by tina

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2 years ago

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Answer:

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