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Paladinen [302]
3 years ago
5

Solve the equation-2(n+3)=13

Mathematics
2 answers:
bonufazy [111]3 years ago
7 0

Answer:

im thinking n is 6.5 not sure wait not 6.5 its 3.5

Svetradugi [14.3K]3 years ago
5 0

Answer:

Use distributive property

Divide both sides by (-2)

Step-by-step explanation:

First method: Use distributive property:

-2(n + 3) = 13

-2n - 6 = 13    

      -2n = 13 + 6

      -2n = 19

         n = 19/-2

        n = -9.5

2) Divide both sides by (-2)

-2(n +33) = 13

\frac{-2(n + 3)}{2}=\frac{13}{-2}\\\\n + 3 = -6.5\\      n = -6.5 - 3\\      n = -9.5

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jok3333 [9.3K]
Answer: Choice C) 2

----------------------------------------------

Explanation:

Using the law of sines, we get
sin(B)/b = sin(C)/c
sin(18)/7 = sin(C)/11
0.0441452849107 = sin(C)/11
11*0.0441452849107 = sin(C)
0.4855981340177 = sin(C)
sin(C) = 0.4855981340177
C = arcsin(0.4855981340177) or C = 180-arcsin(0.4855981340177)
C = 29.0516679549861 or C = 150.948332045013
There are two possibilities for angle C because of something like sin(30) = sin(150) = 1/2 = 0.5

Those approximate values of C round to
C = 29.05 and C = 150.95

If C = 29.05, then angle A is
A = 180-B-C
A = 180-18-29.05
A = 132.95
Making this triangle possible since angle A is a positive number

If C = 150.95, then angle A is 
A = 180-B-C
A = 180-18-150.95
A = 11.05
making this triangle possible since angle A is a positive number

There are two distinct triangles that can be formed. 
One triangle is with the angles: A = 132.95, B = 18, C = 29.05
The other triangle is with the angles: A = 11.05, B = 18, C = 150.95
The decimal values are approximate
7 0
3 years ago
8. Let f(x) = 3x + 2 and g(x) = x - 3. Find f(x) - g(x) and state its domain.
Dvinal [7]
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then add like terms
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Step-by-step explanation:

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