HELP ASAP! Write a completely simplified rational expression that represents the exchange rate Salma will receive in dollars per euro. Explain how you came up with your expression

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn