rs/st=5/7 find the indicated value of x
._______________._______.
R 2x+9 S 4x-15 T
You are going to have to explain what you are talking about before help can be provided. Perhaps whatever you typed did not turn out the way you intended. I recommend using / and parentheses for fractions. You never know where the denominators will turn up, otherwise.
if st=15 and rt=40, then rs=
25
To find the indicated value of x in the given ratio rs/st = 5/7, we need to set up an equation and solve for x.
Given:
rs/st = 5/7
Let's substitute the values of r, s, and t using the given information:
r = 2x + 9
s = 4x - 15
t = ?
Now, replace r, s, and t in the ratio equation:
(2x + 9)/(4x - 15) = 5/7
To solve this equation, we will cross-multiply:
7 * (2x + 9) = 5 * (4x - 15)
Simplify both sides:
14x + 63 = 20x - 75
Bring similar terms together:
14x - 20x = -75 - 63
-6x = -138
Divide both sides by -6:
x = (-138)/(-6)
Simplify:
x = 23
Therefore, the indicated value of x in the given ratio rs/st = 5/7 is 23.