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azamat
3 years ago
14

True or False: (x + 4)(x - 4) = x2 - 8x + 16

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0
False . yesssssss itssss false
Maurinko [17]3 years ago
6 0
(x + 4)(x - 4)
x2 - 4x + 4x - 16
x2 - 16

The statement above is False.
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The altitude A in feet of a plane t minutes after takeoff is approximated by the function a=7000 In(0.2t)+2000. Solve for the t
konstantin123 [22]

Answer:

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Step-by-step explanation:

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Now we can divide both sides by 7000 and we got:

\frac{A-2000}{7000} = ln(0.2 t)

Now we can apply exponential in both sides of the equation and we got:

e^{\frac{A-2000}{7000}}= 0.2 t

And now we can divide both sides by 0.2 and we got:

t=  \frac{1}{0.2} e^{\frac{A-2000}{7000}} = 5e^{\frac{A-2000}{7000}}

And for this case we can use the last equation when we want the altitude and we want to know how many minutes the plane was at air after the takeoff

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