3 years ago

Find the area of the circle with the given radius or diameter. Use = 3.14. r = 2 A =?

Mathematics

1 answer:

dalvyx [7]3 years ago

8 0

A = 3.14 (2)^2
A = 3.14 (4)
A = 12.56

answer
A = 12.56

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Rationalize the denominator and simplify. StartFraction 5 minus StartRoot 3 EndRoot Over 4 plus 2 StartRoot 3 EndRoot EndFractio

nasty-shy [4]

Answer:

$\frac{13-7\sqrt{3}}{2}$

Step-by-step explanation:

We need to rationalize the denominator of $= \frac{5-\sqrt{3}}{4+2\sqrt{3}}$ . For rationalizing we multiply the equation by $\frac{4-2\sqrt{3}}{4-2\sqrt{3}}$

So, solving

$= \frac{5-\sqrt{3}}{4+2\sqrt{3}}*\frac{4-2\sqrt{3}}{4-2\sqrt{3}} \\=\frac{(5-\sqrt{3})(4-2\sqrt{3})}{4+2\sqrt{3}*4-2\sqrt{3}}\\=\frac{(5-\sqrt{3})(4-2\sqrt{3})}{(4)^2-(2\sqrt{3})^2}\\= \frac{5(4-2\sqrt{3})-\sqrt{3}(4-2\sqrt{3})}{16-(4*3)}\\=\frac{20-10\sqrt{3}-4\sqrt{3}+2*3}{16-12}\\=\frac{20+6-14\sqrt{3}}{4}\\=\frac{26-14\sqrt{3}}{4}\\= \frac{2(13-7\sqrt{3})}{4}\\=\frac{13-7\sqrt{3}}{2}$

5 0

3 years ago

Create 2 lines thatare parallel to 8x + 2y = 7?

Alinara [238K]

d1 = ax + by + c = 0 and d2= mx + ky + f = 0

if they are parallel :

$\frac{a}{m} = \frac{b}{k} \neq \frac{c}{f}$

8x + 2y = 7

8x + 2y - 7 = 0

8x + 2y -9 = 0
4x + y -6 = 0
16x + 4y - 19 = 0

you can create more whatever you want =)

Hope this helps ^-^

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3 years ago

Which integer is closest to √55 ?

julsineya [31]

Answer:

when you simplify √55

you get

7.41619848.....

the integer closest to 7.41619848... is 7

So the answer is 7

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3 years ago

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irga5000 [103]

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writing utensils= 16

School supplies=20

16:20

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3 years ago

Polynomial question,

arsen [322]

Answer:

Look at the attachment

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3 years ago