Answer:
x = 27/7 and y = -3/7
Step-by-step explanation:
In order to solve this, we will first solve the first equation for y.
y + 4 = 2/3(x -1)
y + 4 = 2/3x - 2/3
y = 2/3x - 14/3
Now we can plug the value of the equation in for y in the second equation and use it to solve for x.
x + 2y = 3
x + 2(2/3x - 14/3) = 3
x + 4/3x - 18/3 = 9/3
7/3x - 18/3 = 9/3
7/3x = 27/3
x = 27/7
Then we can use this value to find the value of y.
x + 2y = 3
27/7 + 2y = 3
27/7 + 2y = 21/7
2y = -6/7
y = -3/7
Answer: The three numbers are 8, 12 and 20.
Explanation:
Let k be the ratio of the numbers
The numbers: 2k, 3k, 5k
(2k)^2 + (3k)^2 (5k)^2 = 608
4k^2 + 9k^2 + 25k^2 = 608
38k^2 = 608
k^2 = 16
k = 4
Hence, the three numbers are 8, 12 and 20.
Answer:
x= -2, x = 5
Step-by-step explanation:
x= -2, x = 5