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VLD [36.1K]
3 years ago
6

How do I simplify this expression (-3)(4x - 12)​

Mathematics
2 answers:
pav-90 [236]3 years ago
6 0

Answer:

Step-by-step explanation:

Remark

This is an example of the distributive property. -3 multiplies both the 4x and the -12. The minus sign between them is NOT destroyed.

-3 * 4x = -12x

-3 * -12 = 36

Answer: - 12x + 36

Sindrei [870]3 years ago
3 0

Answer:

-12(x-3)

Step-by-step explanation:

If you are only trying to simplify, you can factor out a 4 from (4x - 12).

4(x-3)

now multiply the 4 and -3

-12(x-3)

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liraira [26]

Missing information:

How fast is the temperature experienced by the particle changing in degrees Celsius per meter at the point

P = (\frac{1}{2}, \frac{\sqrt 3}{2})

Answer:

Rate = 0.935042^\circ /cm

Step-by-step explanation:

Given

P = (\frac{1}{2}, \frac{\sqrt 3}{2})

T(x,y) =x\sin2y

r = 1m

v = 2m/s

Express the given point P as a unit tangent vector:

P = (\frac{1}{2}, \frac{\sqrt 3}{2})

u = \frac{\sqrt 3}{2}i - \frac{1}{2}j

Next, find the gradient of P and T using: \triangle T = \nabla T * u

Where

\nabla T|_{(\frac{1}{2}, \frac{\sqrt 3}{2})}  = (sin \sqrt 3)i + (cos \sqrt 3)j

So: the gradient becomes:

\triangle T = \nabla T * u

\triangle T = [(sin \sqrt 3)i + (cos \sqrt 3)j] *  [\frac{\sqrt 3}{2}i - \frac{1}{2}j]

By vector multiplication, we have:

\triangle T = (sin \sqrt 3)*  \frac{\sqrt 3}{2} - (cos \sqrt 3)  \frac{1}{2}

\triangle T = 0.9870 * 0.8660 - (-0.1606 * 0.5)

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3 0
3 years ago
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alisha [4.7K]

Answer:

Below in bold.

Step-by-step explanation:

sin 66.4 = opposite side / hypotenuse

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3 0
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Step-by-step explanation:

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