3 years ago

What is the circumference of a circle when the radius is 7

Mathematics

1 answer:

svetlana [45]3 years ago

7 0

Answer:

43.98

Step-by-step explanation:

pier2

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Which polygon has an interior angle sum of 1080°?

rosijanka [135]

Answer:

its octagon. first and last one it has total 8 sides

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2 years ago

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How can I find the exact distance between the points(√7,-√2)and (4√7,5√2)

chubhunter [2.5K]

$\bf \textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ \sqrt{7}}}\quad ,&{{ -\sqrt{2}}})\quad 
% (c,d)
&({{4\sqrt{7}}}\quad ,&{{ 5\sqrt{2}}})
\end{array}~~~
% distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}
\\\\\\
$

$\bf d=\sqrt{[4\sqrt{7}-\sqrt{7}]^2~+~[5\sqrt{2}-(-\sqrt{2})]^2}
\\\\\\
d=\sqrt{(4\sqrt{7}-\sqrt{7})^2~+~(5\sqrt{2}+\sqrt{2})^2}\implies d=\sqrt{(3\sqrt{7})^2~+~(6\sqrt{2})^2}
\\\\\\
d=\sqrt{3^2\cdot 7~~+~~6^2\cdot 2}\implies d=\sqrt{63+72}\implies d=\sqrt{135}
\\\\\\
\begin{cases}
135=5\cdot 3\cdot 3\cdot 3\\
\qquad 5\cdot 3^2\cdot 3\\
\qquad 15\cdot 3^2
\end{cases}\implies d=\sqrt{15\cdot 3^2}\implies d=3\sqrt{15}$

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3 years ago

Evaluate x-1/3 when x=2/3

eduard

Answer:

1/3

Step-by-step explanation:

x-1/3 x=2/3

2/3-1/3 (same denominator)

=1/3

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2 years ago

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vodomira [7]

I think it c 50y and 6m

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2 years ago

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A fish store received a shipment of 246 goldfish. The owner of the store arranged the fish into small tanks of 8 fish per tank.

saw5 [17]

Answer:

he would need 31 tanks

30 tanks would hold 240 fish with 6 left over

Step-by-step explanation:

246/8= 30.75

30*8 = 240

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3 years ago

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