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ra1l [238]
3 years ago
6

Solve each equation for the indicated variable. Solve for pi.

Mathematics
1 answer:
frutty [35]3 years ago
4 0

9514 1404 393

Answer:

  π = 2A/r²

Step-by-step explanation:

Multiply by the inverse of the coefficient of π.

  A = π(r²/2)

  π = 2A/r²

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A company developed the following linear model to help budget annual expenses over time. In this model, x represents the number
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The only reasonable answer I could think for this is "A.<span>The company's expense budget for 2009 was $189,785."
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3 years ago
A driver starts his parked car and within 7 seconds reaches a velocity of 75 m/s as he travels west. What is his acceleration?​
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6 0
3 years ago
What is the value of ( 0.4) ^3
cestrela7 [59]

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Step-by-step explanation:

( 0.4) ^3

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8 0
3 years ago
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s344n2d4d5 [400]

I've answered your other question as well.

Step-by-step explanation:

Since the identity is true whether the angle x is measured in degrees, radians, gradians (indeed, anything else you care to concoct), I’ll omit the ‘degrees’ sign.

Using the binomial theorem, (a+b)3=a3+3a2b+3ab2+b3

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Substituting a=sin2(x) and b=cos2(x), we have:

sin6(x)+cos6(x)=(sin2(x)+cos2(x))3−3(sin2(x)+cos2(x))sin2(x)cos2(x)

Using the trigonometric identity cos2(x)+sin2(x)=1, your expression simplifies to:

sin6(x)+cos6(x)=1−3sin2(x)cos2(x)

From the double angle formula for the sine function, sin(2x)=2sin(x)cos(x)⇒sin(x)cos(x)=0.5sin(2x)

Meaning the expression can be rewritten as:

sin6(x)+cos6(x)=1−0.75sin2(2x)=1−34sin2(2x)

3 0
3 years ago
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