2 years ago

How do I solve this?

Mathematics

1 answer:

crimeas [40]2 years ago

6 0

The answer is -1/8 :)

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The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken

agasfer [191]

33.3..........................................

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3 years ago

What is the value of -36 - (-40) 0-76 076 O 4 0-4

maksim [4K]

Answer:

Step-by-step explanation:

→ –36 – ( –40 )

Whenever there is sign of subtraction before the brackets, signs of the numbers inside the brackets get changed when we removed the brackets.

( – ) × ( – ) = ( + )

→ –36 + 40

→ 4

$\therefore$ 4 is the required answer.

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30 POINTS!!! What is the area of this figure? Enter your answer in the box

Elza [17]

Area of parallelogram: lw = 9(5)=45m
Area of triangle: 1/2bh = 1/2(9)(8) = 36m

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2 years ago

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AlladinOne [14]

Answer:x is equal to 2. Hope this is helpful

Step-by-step explanation:

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3 years ago

Read 2 more answers

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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3 years ago