Final answer:
To find the value of x that makes the ratios 2:7 and 8:x equivalent, we can set up a proportion and solve for x.
Step-by-step explanation:
To find the value of x so that the ratios 2:7 and 8:x are equivalent, we can set up a proportion. We know that 2/7 is equal to 8/x. To solve for x, we can cross-multiply and solve the resulting equation.
2x = 7 * 8
2x = 56
x = 28
Therefore, the value of x that makes the ratios equivalent is 28.