problem is solve for the unknown
2/3 over 10 = 1.8 over r
dont even know where to start to solve this please help
cross-muliply
2/3 r = 18
multiply both sides by 3/2
thank you
To solve the equation (2/3) / 10 = (1.8) / r, you can cross-multiply. This means multiplying the numerator of the left side by the denominator of the right side and vice versa.
So, cross-multiplying gives you (2/3) * r = 10 * (1.8).
Simplifying the right side, you get (2/3) * r = 18.
To solve for r, you need to isolate it on one side of the equation.
You can do this by multiplying both sides of the equation by the reciprocal of (2/3), which is 3/2. This ensures that the coefficient of r on the left side is 1.
Multiplying both sides of the equation by 3/2 gives you:
(3/2) * (2/3) * r = (3/2) * 18
The 2/3 and 3/2 fractions cancel each other out on the left side, leaving you with:
r = (3/2) * 18
Simplifying the right side, you get:
r = 27
So, the solution to the equation is r = 27.