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WARRIOR [948]
3 years ago
5

Calculate the value of y

Mathematics
2 answers:
Reika [66]3 years ago
4 0
157 degrees ... set 4x-5 = x+16 then solve, you should get x=7, plug in 7 for one of the equations and you'll get 23. subtract 23 from 180 and get 157. hope that helped :)
Afina-wow [57]3 years ago
4 0

Answer:

157°

Step-by-step explanation:

(4x - 5)° = (x + 16)°.. (vertical angles)

4x - 5 = x + 16

4x - x = 16 + 5

3x = 21

x = 21/3

x = 7

(x + 16)° + y ° = 180°...(Linear pair angles)

(7 + 16)° + y° = 180°

23° + y° = 180°

y° = 180° - 23°

y° = 157°

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E=number of eagles
c=number of condors

ttoal is 480
c+e=480

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we have
c+e=480
5c+9e=3260

eliminateion
elmiminate c
times first equation by -5

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add to other equation

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<u> 5c+9e=3260 +</u>
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sub back

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minus 215 from both sides
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thiis spring is

265 condors
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