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Elden [556K]
3 years ago
6

Gina is working on a jigsaw puzzle.She completed 1/10 of the puzzle today.In simplest form, what fraction of the puzzle is compl

eted?

Mathematics
2 answers:
SashulF [63]3 years ago
8 0

2/5 is the correct answer


Vinil7 [7]3 years ago
4 0
2/5 because 3/10 + 1/10 is 4/10 divide that by 2 and get 2/5
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Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.
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Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

a\cdot b=0

By using the property

(u+v)\cdot (u-v)=0

We know that

(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2

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\mid u\mid^2=\mid v\mid^2

Magnitude is always positive

When power of base on both sides are equal then base will be equal

Therefore,

\mid u\mid=\mid v\mid

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