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ivann1987 [24]
3 years ago
9

Can you find the value of x please​

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

Answer:

x = 5.4

Step-by-step explanation:

4/3 = 0.75

7.2*0.75 = 5.4

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what algebraic expression must be added to the sum of 3x squared + 4x + 8 and 2x squared -6x + 3 to give 9x squared -2x - 5 as t
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<span>3x^2 + 4x + 8 + 2x^2 - 6x + 3 to give result as 9x^2 -2x - 5


</span>3x^2 + 4x + 8 + 2x^2 - 6x + 3 
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so

9x^2 -2x - 5 - (5x^2 - 2x + 11)
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answer

expression (4x^2 -16) must be added to the sum of (3x^2 + 4x + 8) and (2x^2 - 6x + 3) to give the result as (9x^2 - 2x - 5)
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The position vector for a particle moving on a helix is
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a) 25.15

b)

   x = 1

   y = t

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Step-by-step explanation:

a)

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v(t) = (-sin(t), cos(t), 2t)

The velocity at t0=4pi is:

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b)

The tangent line to c(t) at t0 = 4pi has the parametric form:

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Since

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The tangent curve has the following components:

x = 1

y = t

z = (4pi)^2 + t *(8pi) = 4pi(4pi + 2t)

c)

The intersection with the xy plane will occurr when z = 0

This happens at:

  t1 = -2pi

Therefore, the intersection will occur at:

(x,y) = (1, -2pi)

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