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Alona [7]
3 years ago
12

-7x+14=4x-19 please help w/ answer

Mathematics
2 answers:
Vladimir79 [104]3 years ago
6 0
The correct answer is x=3. Hope this helps!!
dezoksy [38]3 years ago
4 0

14+19 = 7x + 4 x

33 = 11x

33/11 = 11x/11

x = 11

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Show so that the expression of cos4A in term of SinA is 8Sin^4 - 8Sin^2A + 1​
Degger [83]

Answer:

Step-by-step explanation:

L

H

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L

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=

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(

1

−

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)

2

−

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(

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−

4

sin

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x

+

4

sin

4

x

)

−

1

=

2

−

8

sin

2

x

+

8

sin

4

x

−

1

=

8

sin

4

x

−

8

sin

2

x

+

1

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R

H

S

sin

2

x

+

cos

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cos

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substitute in the equation as follows

8

cos

4

x

−

8

cos

2

x

+

1

=

8

cos

2

x

(

cos

2

x

−

1

)

+

1

=

8

(

1

−

sin

2

x

)

(

1

−

sin

2

x

−

1

)

+

1

=

8

(

1

−

sin

2

x

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(

−

sin

2

x

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+

1

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sin

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8

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5 0
3 years ago
Where is EF to the nearest tenth??
Katena32 [7]

Answer:

37.7

Step-by-step explanation:

EF and ED define the Tangent of D

Tan(37) = side opposite D / side adjacent to D

Opposite means a line (FE) that is not connected to the angle. It is never the longest line (hypotenuse) in a Right Triangle

Adjacent means the leg that is connected to the angle, but is not the hypotenuse.

Tan(D) = opposite over adjacent

Opposite = x

Adjacent = 50

Tan(37) = 0.7536 rounded to 4 places, but I've kept the exact value in my calculator.

0.7536 = x / 50     Multiply both sides by 50

0.7536*50 = x

x = 37.6777

The nearest 1/10 is 37.7

6 0
3 years ago
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-Dominant- [34]
The answer would be 18
4 0
3 years ago
Use substitution to solve the system of equation<br><br> x=y+6<br> x+y=10
DiKsa [7]
X = 8
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6 0
3 years ago
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Which is the simplified form of r^-7 + s^-12
makkiz [27]

Answer:

The simplified form of r^-7 + s^-12 is ----> 1/r^7 + 1/s^12

Step-by-step explanation:

3 0
3 years ago
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