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Bogdan [553]
3 years ago
10

A circle has a diameter of 42 mm. What is the circumference of this circle? (use 22/7 for pi; show your work in numbers)

Mathematics
1 answer:
stellarik [79]3 years ago
8 0

Answer:

132

Step-by-step explanation:

Find Radius (r)

42/2 = 21

Plug 21 into Circumference Equation

2πr (In this case, π is 22/7)

Simplify

42 (22/7)

<u>132</u>

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vovikov84 [41]

Let's say "m" is the manufactoring cost per drill (in dollars).

Then the manufactorer sells it for $4 more, so this would be:

    m+4

Then the chain store sells it for 140% of the price is paid the manufactorer, so this would be "140% of (m+4)" which translates to "1.4•(m+4)" or more simply:

    1.4(m+4)

P(m) = 1.4(m+4), where m is the initial manufactoring cost (in dollars).

Simplifying, you could rewrite this as:

     P(m) = 1.4m + 5.6

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
What is the simplified form of this expression? (8x − 7) + (-2x − 9) − (4x − 3)
Murljashka [212]

Answer:

The answer to your question is:         2x -13

Step-by-step explanation:

         Simplified                             (8x − 7) + (-2x − 9) − (4x − 3)

                                                       8x - 7 - 2x - 9 - 4x + 3

         Simplified like terms            8x - 2x - 4x - 7 - 9 + 3

                                                       2x -13                                                        

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3 years ago
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Answer:

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Interval Notation: ( -2, ∞)

Step-by-step explanation:

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3 years ago
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