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tino4ka555 [31]
3 years ago
6

eric is ten years older than sal & mick is twice sals age their combined age equals 110 how old is sal

Mathematics
1 answer:
Olenka [21]3 years ago
7 0
2x + x  + 10 + x = 110
4x + 10 = 110 (Subtract ten from both sides)
4x = 100 (divide both sides by four)
x = 25

Plug in values to check...

2(25) + 25 + 25 + 10 = 110
50 + 50 + 10 = 110
110 = 110

Mick is 50 years of age.
Sal is 25 years of age.
Eric is 35 years of age.
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Please answer! this is an important exam that im taking right now.
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Answer:

Required ordered pair is (0,0) for system of equation

Step-by-step explanation:

The given system of equation is

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On simplifying the equation A

9^{12x} = 9^{3y}

Take log on both side,

(12x) (log9) = (3y) (log9)

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To find the solution of the system of the equation :

Replacing value of y=4x in equation B,

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(4x)^{4} - 9(4x)^{2} x^{2} =16(4x)

256x^{4} - 144x^{2} x^{2} =64x

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We get,

x=0 and x=0.829

Since, 0.829 is not integer number

Only solution of equations is x=0

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