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karebareyo
07.02.2022 •
Mathematics
A mom is 4 times older than her daughter. In four years,she will be 3 times older than her daughter. Find there ages now
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Ответ:
8 years and 32 years old
Step-by-step explanation:
Let x be the age of the mother now and y be the age of the daughter now then...
x=4y
4+x=3(y+4)
Note that in the second equation we are adding 4 because it says "in four years"
Simplify the second equation to get:
4+x=3(y)+3(4)
4+x=3y+12
Subtract 4 from both sides
x=3y+8
Solve using substitution (substitute 4y for x)
4y=3y+8
Subtract 3y from both sides
y=8
x=4(8)=32
The mother is 32 years old and her daughter is 8 years old
Ответ:
daughter=8 and mom=32years
Step-by-step explanation:
mmom
ddaughter
m=4d
m+4=3(D+4)
4d+4=3d+12
4d-3d=12-4
d=8 and m=4*8=32
Ответ:
y = 1/4x - 8
Step-by-step explanation:
Given
y + 2 = 1/4 ( x - 24 )
Arranging in slope intercept form; y = mx + c
y + 2 = 1/4x - 24 /4
y+ 2 = 1/4x - 6
y = 1/4x - 6 - 2
y = 1/4x - 8
Hope it will help :)