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madam [21]
3 years ago
10

Whats the value c Pleaseee help

Mathematics
2 answers:
nikklg [1K]3 years ago
8 0

Step-by-step explanation:

the value of x is 20 that's it good luck

tiny-mole [99]3 years ago
4 0

Step-by-step explanation:

6c + c + 10 + c + 10 = 180

8c = 160

c = 20

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Step-by-step explanation:

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What is the quadratic equation whose roots are -3, -1 and has a leading coefficient of 2 with X to represent the variable?
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f(x)=2(x+3)(x+1)\\
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If the smallest angle of a triangle is 20° and it is included between sides of 4 and 7, then (to the nearest tenth) the smallest
lawyer [7]

Answer:

3.5

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The smallest side of a triangle is formed by the smallest angle in the triangle.

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Let c be the side opposite to the 20 degree angle.

Assign variables:

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Substituting these variables, we get:

c^2=4^2+7^2-2(4)(7)\cos 20^{\circ},\\c^2=16+49-56\cos 20^{\circ},\\c^2=12.377213236,\\c=\sqrt{12.377213236}=3.51812638147\approx \boxed{3.5}

Therefore, the shortest side of this triangle is 3.5.

5 0
3 years ago
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