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
X= -5
Hopefully this helped :))
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>
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.
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