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denpristay [2]
3 years ago
13

2 Points

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
8 0

The answer would be 0

vodomira [7]3 years ago
3 0

1 is the magnitude of this question bro because it is process

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Which statement includes two quantities in the real-world that are additive inverses?
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C I don’t know the answer because I am just try level up
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Two numbers, 3 and a, have a geometric mean of 9. Find the value of a.
Ket [755]
The geometric mean of two numbers x and y is √(xy).

So, if the geometric mean of 3 and a is 9 =>

9 = √(3a)

=> 9^2 = 3a

=> a = 9^2 / 3

a = 81 / 3

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Answer: the value of a is 27.
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√x+4=√3x <br><br> A.) x=2<br> B.) x=-2<br> C.) x=3<br> D.) x=-3
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Let u= &lt;4,3&gt;. Find the unit vector in the direction of u, and write your answer in component form.
aksik [14]
Take the vector u = <ux, uy> = <4, 3>.

Find the magnitude of u:

||u|| = sqrt[ (ux)^2 + (uy)^2]

||u|| = sqrt[ 4^2 + 3^2 ]

||u|| = sqrt[ 16 + 9 ]

||u|| = sqrt[ 25 ]

||u|| = 5

To find the unit vector in the direction of u, and also with the same sign, just divide each coordinate of u by ||u||. So the vector you are looking for is

u/||u||

u * (1/||u||)

= <4, 3> * (1/5)

= <4/5, 3/5>

and there it is.

Writing it in component form:

= (4/5) * i + (3/5) * j

I hope this helps. =)
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3 years ago
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