Answer:
(2,-2)
Step-by-step explanation:
To solve this using substitution you would take your second equation and plug it in for y of the first equation (4x-10= -3x+4). You then would add the 10 over (4x= -3+14). Next you add the 3x over(7x=14). Finally divide both sides by 7, which should give you x=2. Now all you have to do is plug the two in for x in one of your equations (which ever equation you prefer) (y=-3(2)+4). Solve the equation and you will then have the answer to y, which you can then put into a point.
Answer:
<u>2 years old</u>
Step-by-step explanation:
Let Ellie's age ⇒⇒⇒ x
And Genya's age ⇒⇒⇒ y
∵ The sum of Ellie's age and Genya's age is 60
∴ x + y = 60 ⇒ (1)
∵ In six years, Genya will be eight times as old as Ellie
∴ (y + 6) = 8 (x+6)
∴ y + 6 = 8x + 48 subtract 6 from both sides
∴ y = 8x + 42 ⇒ (2)
By substituting from 2 at 1 with the value of y
∴ x + (8x + 42) = 60
∴ 9x = 60 - 42 = 18
∴ x = 18/9 = 2
∴ y = 60 - x = 58
So, Ellie's age now = 2 years old
And Genya's age = 58 years old
if you want to multiply mixed numbers you need to turn them into improper fractions
8000(.09)=720 8000+720=8720
