Question

pls help fast and fast​

Answer 1

Answer:

x= 12 YRS AND Y = 6 YRS

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation

Let x = sisters present age; 4 yrs hence her age will be x+4

Then 2x= other girls present age; 4 years hence her age will be 2x+4

Sooooo

(x+4)(2x+4)=160

Using FOIL we have 2x^2+4x+8x+16=160

2x^2+12x+16=160. divide each term by 2

x^2+6x+8=80 or

x^2+6x-72=0 quadratic in standard form and it can be factored

(x+12)(x-6)=0

x=-12-----no good can't have negative age

x=6-----answer

sisters age is 6

girls age is 12

Check

(6+4)(12+4)=160

160=160