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blondinia [14]
3 years ago
6

How can I use math to explain why other people's work is right or wrong?

Mathematics
1 answer:
valentinak56 [21]3 years ago
6 0

Answer:

you can use math to explain others wrong by maybe doing calculations

Step-by-step explanation:

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If u is a unit vector, find u · v and u · w. (assume v and w are also unit vectors.) equilateral triangle
serg [7]

solution:

we know that ,

u.v = ΙuΙ ΙvΙcosθ

here,

θ =60° (since the given triangle is equilateral triangle)

u.v = ΙuΙ ΙvΙcos60°

     = 1 x 1 x 1/2

u.v = 1/2

now, u.w = ΙuΙ ΙwΙcosθ

              = ΙuΙ x cos(60x2)

u.w = -1/2


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4 years ago
3x\2-x=x/6-5/3<br> Solve
Scilla [17]
X= -5

Hopefully this helped :))
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3 years ago
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Lashaundra bought a bracelet and a ring for each of the 7 girls in her group. The bracelet cost $2.50 each and the ring cost $1.
puteri [66]
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5 0
3 years ago
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Will mark brainliest if right
azamat

Answer: 5x^2 + 3x + 1

Step-by-step explanation:

1.) Put the two equations together into an addition problem.

<em>3x^2 + 4x + 2x^2 - x + 1</em>

2.) Combine like terms.

<em>3x^2 + 2x^2 = 5x^2</em>

<em>4x - x = 3x</em>

<em>1 = 1</em>

3.) Order the like terms together.

<em>5x^2 + 3x + 1</em>

8 0
3 years ago
S=L (1 - r), for r
maria [59]
OK. Then let's solve for ' r '.  That means you have to come up with an equation that says     r =    everything else.

Step #1: 
Write the equation you're given:   <span>S = L (1 - r)

Let's divide each side by ' L ':      S/L = 1 - r

Subtract 1 from each side :         S/L - 1 = -r

Multiply each side by -1 :          <em>  1 - S/L = r</em>

and there you have it.
</span>
3 0
3 years ago
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