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Dovator [93]
3 years ago
6

Anul acesta varsta tatalui este de 4 ori mai mare decat a fiului,dar peste 20 de ani va fi de 2 ori mai mare.Cati an va avea fiu

l peste 5 ani.
Mathematics
1 answer:
Xelga [282]3 years ago
3 0
T = varsta tatalui
f = varsta fiului

anul acesta: t = 4 x f
peste 20 de ani: t+20 = 2 x (f+20)

=> 4 x f +20 = 2 x f + 2 x 20
4 x f - 2 x f = 2 x 20 - 20
2 x f = 20
f = 10
anul acesta fiul are 10 ani
peste 5 ani fiul va avea...
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Answer: x = -54

Step-by-step explanation:

Simplifying

(2x) = (4x + 108)

Reorder the terms:

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Remove parenthesis around (108 + 4x)

(2x) = 108 + 4x

Solving

(2x) = 108 + 4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4x' to each side of the equation.

(2x) + -4x = 108 + 4x + -4x

Combine like terms: (2x) + -4x = -2x

-2x = 108 + 4x + -4x

Combine like terms: 4x + -4x = 0

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Review the federal income tax table.
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4 0
3 years ago
What is the value of y?
tatuchka [14]
X = 8
y = 40 

the two base angles are equal to each other so you would do 5x = 40 and solve for x

a triangle has 180 total degrees. 40*2 = 80 
                                                       180 - 80 = 100
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4 0
3 years ago
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omeli [17]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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