Find the value of x

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

5 0

Answer:

79 degrees

Step-by-step explanation:

Quadrilaterals have a total of 360 degrees. They already gave you three of them so you just have to add all the given degrees and subtract it by 360. 101+124+56=281 ; 360-281=79

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Express sin A, cos A, and tan A as ratios

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<h3>Answer: Choice B</h3><h3>sqrt(3)/2, 1/2, sqrt(3)</h3>

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Explanation:

Sine of an angle is the ratio of the opposite side over the hypotenuse. For reference angle A, the opposite side is BC = 6sqrt(3). The hypotenuse is the longest side AB = 12

Sin(angle) = opposite/hypotenuse

sin(A) = BC/AB

sin(A) = 6sqrt(3)/12

sin(A) = sqrt(3)/2

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

Cosine is the ratio of the adjacent and hypotenuse

cos(angle) = adjacent/hypotenuse

cos(A) = AC/AB

cos(A) = 6/12

cos(A) = 1/2

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Tangent is the ratio of the opposite and adjacent

tan(angle) = opposite/adjacent

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3 years ago

If ⅔ of a number is 20 what is ½ of the number?

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Answer:

Step-by-step explanation:

2/3 of 30 is 20, so 1/2 of 30 is 15

6 0

2 years ago

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Simon has a scale model of the Concorde airplane. The actual length of the Concorde is approximately 200 feet. If the ratio of t

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The answer is: "40 cm " .
_________________________________________________________
Note:
_________________________________________________________

$\frac{200 ft }{ (x) cm} = \frac{5}{1}$ ;

Solve for "x" (in "cm" ) ;

→ 5x = 200 * 1 ;

→ 5x = 200 ;

Divide each side of the equation by "5" ;
to isolate "x" on one side of the equation; & to solve for "x" ;

→ 5x / 5 = 200 / 5 ;

to get:

→ x = 40 .
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The answer is: " 40 cm " .
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