Which statements are equivalent to -2.5< 8/13

The question looks to be incomplete (without the appropriate choices). But still answering related to the inequalities part:

Inequalities are the relationships between two expressions which are not equal to one another. The symbols used for inequalities are <, >, ≤, ≥ and ≠.

reads as '7 is greater than x' (or ' x is less than 7', reading from right to left). Here above, Statements are equivalent when both sides are true or logically the inequality holds good here.

We have , -2.5<8/13 . which is equivalent to -2.5< 0.615 which holds true. We know that any negative number is always smaller than any positive number, also less than 0. And , -2.5 value is less than 0.615. ∴ Inequality holds good!

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step-by-step explanation:

by definition, an arc subtended by a central angle of some given measure has the same measure. so .