Explain: How are unit rates used in the real world? no plagiarism, first legit answer gets brainlest.

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

If u good at math hit me up on insta or sum @basic_jaiden or @ and

∠1 and ∠2 are vertical angles. ∠2 has a measure of 63°. what is the measure of ∠1 ? enter your answer in the box.