Answer:
x : y = 9 : 13
Step-by-step explanation:
Given that
3x - y : x + 2y = 2 : 5
Express the ratio in fractional form, that is
= 
( cross- multiply )
5(3x - y) = 2(x + 2y) ← distribute parenthesis on both sides )
15x - 5y = 2x + 4y ( subtract 2x from both sides )
13x - 5y = 4y ( add 5y to both sides )
13x = 9y ( divide both sides by 13 )
x = 
y ( divide both sides by y )
= , that is
x : y = 9 : 13
Answer:
70%?
Step-by-step explanation:
because 7 precent of 10 is 70%
I set it up as an equation. 1/4x = 1/7x + 3. After you solve it out, it’s 28.
(5, 90)
You can solve both equations for y and then set equal to each other. Then use the quadratic equation to solve for x
Answer:
2
Step-by-step explanation:
