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ohaa [14]
3 years ago
7

Answer question 4. Please show work.

Mathematics
1 answer:
Finger [1]3 years ago
6 0
X+12 +5x =6x+12 =90
-12 from 90
=78
/6
X=13
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Will someone help me with problem 21?
Juliette [100K]
Sin^(1/2) x cos x - sin^(5/2) cos x
= sin^(1/2) x cos x - sin(1/2)x sin^2 x cos x
factoring we get:
cos x sin^(1/2) x ( 1 - sin^2 x)
Now 1 - sin^2 x = cos^2 x so we have

cos x sin^(1/2) x * cos^2 x

= cos^3 x sqrt sin x
6 0
3 years ago
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Aleksandr-060686 [28]

Answer:

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5 0
3 years ago
3x - 6<br> _____<br> x - 2 ?????????
slega [8]
Answer:  The expression given simplifies to:  3 .
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Explanation:  
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Factor the numerator into:  3(x-2).
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    \frac{3(x-2)}{(x-2)} ;
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6 0
3 years ago
Find the surface area of each figure. Round your answers to the nearest hundredth, if necessary.
Veronika [31]

Answer: surface area = 313.2 cm²

Step-by-step explanation:

The given figure is an hexagonal pyramid. It has a hexagonal base and six triangular lateral faces. The formula for determining the surface area of the pyramid is expressed as

Surface area = 3ab + 3bs

Where

a represents the apotherm which is the distance from each side of the hexagon to the center.

b represents the base length

s represents the slant height of the hexagonal base.

From the information given,

a = 5.2 cm

b = 6 cm

s = 12.2 cm

Surface area = (3 × 5.2 × 6) + (3 × 6 × 12.2) = 93.6 + 219.6 = 313.2 cm²

6 0
3 years ago
When 3(2x + 9) = 4x - 7 is solved for X, the solution is<br> 1<br> 3.<br> is 17<br> 4<br> xs-17
lyudmila [28]

\\ \sf\longmapsto 3(2x+9)=4x-7

\\ \sf\longmapsto 6x+27=4x-7

\\ \sf\longmapsto 6x-4x=-7-27

\\ \sf\longmapsto 2x=-34

\\ \sf\longmapsto x=17

8 0
3 years ago
Read 2 more answers
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