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ArbitrLikvidat [17]

3 years ago

5

there are 4 lunch choices in a school cafeteria.The percentage of students that chose salad is 15%.If 300 students ate lunch, wh

at is the total number of students that chose salad.

2 answers:

Sergio [31]3 years ago

8 0

I hope this help

it is 45

Ad libitum [116K]3 years ago

3 0

Just do 15 times 3
the answer is 45 students

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3 years ago

What is the perimeter of a polygon with vertices at (−2, 1) , (−2, 4) , (2, 7) , (6, 4) , and (6, 1) ?

alekssr [168]

First we need the distances of the sides of the polygon, because perimeter = sum of all sides.
$d = \sqrt{{(y2 - y1)}^{2} + {(x2 - x1)}^{2} }$
$d1 = \sqrt{{(1 - 4)}^{2} + {( - 2 - - 2)}^{2} } \\ = \sqrt{{(- 3)}^{2} + {(0)}^{2} } = \sqrt{9} \: = 3$
$d2 = \sqrt{{(4 - 7)}^{2} + {( - 2 - 2)}^{2} } \\ = \sqrt{{(- 3)}^{2} + {( -4)}^{2} } = \sqrt{9 + 16} \\ = \sqrt{25} \: = 5$
$d3 \: = \sqrt{{(7 - 4)}^{2} + {(2 - 6)}^{2} } \\ = \sqrt{{(3)}^{2} + {( - 4)}^{2} } = \sqrt{9 + 16} \\ = \sqrt{25} \: = 5$
$d4 = \sqrt{{(4 - 1)}^{2} + {(6 - 6)}^{2} } \\ = \sqrt{ {(3)}^{2} + {(0)}^{2} } = \sqrt{9} \: = 3$
$d5 = \sqrt{{(1 - 1)}^{2} + {(-2 - 6)}^{2} } \\ = \sqrt{ {(0)}^{2} + {( - 4)}^{2}} = \sqrt{16} \: = 4$
Now, we add all sides for the perimeter:
p = d1 + d2 + d3 + d4 + d5
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5 0

3 years ago

Read 2 more answers

10x4thousands=______thousands=

Zepler [3.9K]

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3 years ago

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3 years ago

ZABD and ZDBC are supplementary angles.

PSYCHO15rus [73]

<h2>Answer:</h2>

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x = 180° - 78°

x = 102°.

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2 years ago

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