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hram777 [196]
3 years ago
9

Use trigonometry to determine the m>DEC to the nearest degree

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0

Answer:

m∠DEC  = 50° to the nearest degree

Step-by-step explanation:

cos D = adjacent side/hypotenuse

         = 36/56

m∠DEC = arccos (36/56) =50° to the nearest degree

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Solve by using elimination. Express your answer as an Ordered pair (-x +2y=3 3x-2y=7
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Answer:

(5,4)

Step-by-step explanation:

-x+2y=3

3x-2y=7

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  • 2x=10

Divide both sides by 2

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To find y, substitute x in for y in one of the equations

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add 5 to both sides

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3 years ago
The Thompson Family decides to plant a total of 180 plants in order to prepare for a larger
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Step-by-step explanation:

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= 3/10 * 180

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Answer:

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multiply:

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distribute:

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Step-by-step explanation:

The area of the rectangle is equal to the multiple of its two sides this is equal to two inches times an expression three less than a certain number "x". Using the distributive property, we can solve this expression further to find that the area of this rectangle is also equal to six less than doubling a certain number x.

5 0
3 years ago
Read 2 more answers
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