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DENIUS [597]
3 years ago
8

How many inches are equal to 13 feet?

Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0

Answer:

156

Step-by-step explanation:

1 foot = 12 inches

hope it helps

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I’m not sure how to complete this if anyone can solve it for me
finlep [7]

Answer:  AD = 108

               BD = 105

             ADB = 213

             ABC = 182

<u>Step-by-step explanation:</u>

If no radius is given, assume it is length 1.

Then, the length of the arc is equal to the central angle.

Reminder that a circle is 360°

\bold{\underline{\stackrel\frown{AD}:}}

The central angle = 108°, so the arc length = 108

\bold{\underline{\stackrel\frown{BD}:}}

BD = BC + CD

     = 35° + 70°

     = 105°

The central angle = 105°, so the arc length = 105

\bold{\underline{\stackrel\frown{ADB}:}}

ADB = AD + CD + BC

     = 108° + 70° + 35°

     = 213°

The central angle = 213°, so the arc length = 213

\bold{\underline{\stackrel\frown{ABC}:}}

First, find the angle of AB.

AB = 360° - ADB  

     = 360° - 213°      

     = 147°

ABC = AB + BC

     = 147° + 35°

     = 182°

The central angle = 182°, so the arc length = 182

5 0
3 years ago
yequals(9 x Superscript 4 Baseline minus 4 x squared plus 6 )Superscript 4 To find StartFraction dy Over dx EndFraction ​, write
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Answer:

Step-by-step explanation:

Given the function

y = (9x⁴ — 4x² + 6)⁴

We need to find the derivative of y with respect to x i.e. dy/dx.

So let u = 9x⁴—4x² + 6

Then y = u²,

Then, y is a function of u, y=f(u)

Also, u is a function of x, u = g(x)

In this case,

u = g(x) = 9x⁴—4x² + 6

So let differentiate this function y(x).

This is a function of a function

Then, we need to find u'(x)

u (x) = 9x⁴—4x² + 6

Then, u'(x) = 36x³ — 8x

Also we need to find y'(u)

Then, y = u²

y'(u) = 2u

Using function of a function formula

dy / dx = dy/du × du/dx

y'(x) = y'(u) × u'(x)

y'(x) = 2u × 36x³ — 8x

y'(x) = 2u(36x³ — 8x)

Since, u = 9x⁴—4x² + 6

Therefore,

y'(t) = 2(9x⁴—4x² + 6)(36x³ — 8x)

So,

dy/dx = 2(9x⁴—4x² + 6)(36x³ — 8x)

dy/dx = (18x⁴—8x² + 12)(36x³ — 8x)

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