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uranmaximum [27]
3 years ago
9

What is the length of a 45 arc

Mathematics
2 answers:
Andru [333]3 years ago
8 0

Answer:

1.5707

Step-by-step explanation:

i solved it using the furmola :

2\pi \times r \frac{45}{360}

boyakko [2]3 years ago
4 0

Answer:

<h2>a = 1.57 in</h2>

Step-by-step explanation:

We know that the length of the arc in a circle is proportional to its corresponding angle which means:

a corresponds to 45

2πr corresponds to 360

then

\frac{a}{45} = \frac{2\pi r}{360}

then

a = (45÷360)×4×π

 =1.570796326795

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xxTIMURxx [149]

Answer:

(-2 , 5)

(-1 , 0)

(1 , -4)

(3 , 0)

(4 , -5)

Step-by-step explanation:

<u>First solve the equation:</u>

x² - 2x - 3

<em><u>Find two numbers with have a sum of -2 and a product of -3.</u></em>

-3 and 1

(x - 3)(x + 1)

Solve for x:

x - 3 = 0

x = 3

x + 1 = 0

x = -1

You know that the graph will cross the x-axis at -1 and 3.

(-1 , 0)

(3 , 0)

You know that the graph is positive.

<u>Complete the square to find the vertex</u>

x² - 2x - 3

(x - 1)² = x² - 2 + 1

x² - 2x - 3 = x² - 2 + 1 - 2 = (x - 1)² - 2

1 = 0

x = 1

Substitute into the original equation:

x² - 2x - 3 =

1² - (2 * 1) - 3 =

1 - 2 - 3 =

-4

(1 , -4)

<em><u>You can input any two numbers within -10 and 10. Such as -2 and 4.</u></em>

x² - 2x - 3 =

-2² - (2 * -2) - 3 =

4- -4- 3 =

5

(-2 , 5)

x² - 2x - 3 =

4² - (2 * 4) - 3 =

16 - 8 - 3 =

-5

(4 , -5)

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3 years ago
MATH QUESTION, PLEASE HELP !!!<br> (will mark branliest )
Aleksandr [31]

Answer:

I am not certain if its right

Step-by-step explanation:

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I NEED MAJOR HELP ON THESE QUESTIONS!!!
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On the bottom left, the answer is subtraction property of equality because you need to subtract 4x to the 7x to simplify the equation.
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Solve: -2/5 (1/4 x -4)
Nimfa-mama [501]

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2/5 is tje correct answer for your question

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