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slava [35]
2 years ago
15

Can someone help me with these 2 polygons and how to figure out a circumference

Mathematics
1 answer:
Svetlanka [38]2 years ago
7 0

The circumference of a circle is found by using the equation: C= 2 x PI x r

Both circles have r = 1

Circumference = 2x 3.14 x 1 = 6.28.

Diameter is 2 times the radius= 2x1= 2

The ratio of the circumference to the diameter = 6.28 / 2 = 3.14 which is the value of PI

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What is the midpoint of the segment shown below?
Aneli [31]

Answer:

(1, -3/2)

Step-by-step explanation:

The x coordinate is the same for both endpoints so the x coordinate for the midpoint is 1

The y coordinate for the midpoint is found by adding the two y coordinates and dividing by 2

(2+-5)/2 = -3/2

The midpoint is

(1, -3/2)

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3 years ago
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At a restaurant, your bill has a food total of $28.20. Find the amount of an 15% tip on the food total.
damaskus [11]
Just multiply by 0.15 to get the tip amount and add to your original number. This gives you 32.43
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Why are verticle angles congruent?
crimeas [40]
Vertical angles are equal, which is similar to saying "vertical angles are congruent."  Note:  vertical, not verticle.

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3 years ago
Solve for x. Evaluate and round your answer to 1 decimal place(tenths place). 10x=1200
Mandarinka [93]

Answer:

<h2>x = 3.1</h2>

Step-by-step explanation:

<h3>{10}^{x}  = 1200</h3>

<u>To solve first take logarithm to both sides</u>

That's

<h3>log_{10}(10) ^{x}  =  log_{10}(1200)</h3><h3 /><h3>log_{10}(10)^{x}  = x log_{10}(10)</h3>

But

<h3>log_{10}(10)  = 1</h3>

So we have

x =  log_{10}(1200)

<u>Write 1200 as a number with the factor 100</u>

That's

1200 = 100 × 12

So we have

<h3>x =  log_{10}(100 \times 12)</h3>

<u>Using the rules of logarithms</u>

That's

<h3>log_{a}(x \times y)  =  log_{a}(x)  +  log_{a}(y)</h3>

Rewrite the expression

That's

<h3>x =  log_{10}(100)  +  log_{10}(12)</h3><h3 /><h3>x =  log_{10}(10)^{2}  +  log_{10}(12)</h3><h3>x = 2 log_{10}(10)  +  log_{10}(12)</h3><h3>log_{10}(10)  = 1</h3><h3 /><h3>x = 2 +  log_{10}(12)</h3>

x = 3.079

So we have the final answer as

<h3>x = 3.1 to one decimal place</h3>

Hope this helps you

8 0
3 years ago
Bailey sold pumpkin pies for two days. on Monday, she sold 13 pies and on Tuesday she sold 23 pies. If she used 3/4 cup of pumpk
MArishka [77]

Answer:

27

Step-by-step explanation:

13 + 23 = 36 x 3/4 = 27

8 0
2 years ago
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