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3 years ago

Can someone find the area please?

Mathematics

2 answers:

balu736 [363]3 years ago

5 0

12 times 5 is 60

12-10=2, so 2 times 6 is 12, divided by 2 is 6

The area is 66

GarryVolchara [31]3 years ago

5 0

The areas here would be 66

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mrs_skeptik [129]

Answer:

$a{\cdot}b=0$

Step-by-step explanation:

It is given that,

Magnitude of a A, $|A|=3$

magnitude of B, $|B|=9$

The angle betwern a and b is $\dfrac{\pi}{2}\ rad=90^{\circ}$

Dot product,

$a{\cdot} b=|a||b|\ \cos\theta\\\\a{\cdot} b=3\times 9\times \ \cos(90)\\\\a{\cdot} b=0$

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3 years ago

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garik1379 [7]

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1 year ago

Check my answers? GIving medal:

Nana76 [90]

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3 years ago

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The expression that gives the number of Jackets that can be made from a fabric of 1634 yards will be found as follows:
let the number of jackets be x.
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If 4 divides a^2-3b^2, then at least one of the integers a and b is even.

OleMash [197]

Answer:

Step-by-step explanation:

Suppose, on the contrary, a and b are both odd integers, that is:

$a=2n+1\\\\b=2m+1\\\\$

m and n being some integers numbers.

This way you have to:

$a^{2}-3b^{2}=(2n+1)^2-3(2m+1)^2=(4n^2+4n+1)-3(4m^2+4m+1)\\\\a^{2}-3b^{2}=4(n^2-3m^2+n-3m)-2=4(n(n+1)-3m(m+1))-2$

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