3 years ago

Help me pleaseeeeeeeeee

Mathematics

1 answer:

gayaneshka [121]3 years ago

7 0

THE ANSWER IS A.....

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How many subsets does set A have if set A has 3 elements

kifflom [539]

Good morning ☕️

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Step-by-step explanation:

it has 8 subsets.

>Remember< : the number of subsets that set A have if set A has n elements

equal to 2ⁿ

In this case we A have 3 elements then its number of subsets is 2³=8

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At school store, 6 pencils sell for $.99. At this rate, what is the cost of 16pencils

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Step-by-step explanation:

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Step-by-step explanation:

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The average length of the dragon used in the performance is 12 feet. The dragon is divided into 9 sections. How long is each sec

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2 years ago

Example:

Aleonysh [2.5K]

Answer:

AB // CD and AD // BC, then ABCD is a parallelogram

Step-by-step explanation:

Step 2: Show AD // BC

A = (-3 , 3) and D = (0 , 0)

Find the slope of AD

$m_{AD}=\frac{0-3}{0--3}=\frac{-3}{3}=-1$

B = (2 , 5) and C = (5 , 2)

$m_{BC}=\frac{2-5}{5-2}=\frac{-3}{3}=-1$

The slope of AD = the slope of BC

So AD // BC because they have the same slope

Step 3:

Each two opposite sides are parallel in quadrilateral ABCD

So the quadrilateral is a parallelogram

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