Need quick ! which operations on the system of equations could be used to eliminate the x variable? 2x-y=4 x-2y=-1 select the correct answer below. a. divide the first equation by 2 and add the result to the first equation b. divide the first equation by -4 and add the result to the first equation c. multiply the second equation by 4 and add the result to the first equation d. multipy the second equation by -2 and add the result to the first equation

The price of a coat increased from $78 to $92. what is the price increase percentage?

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.

Layla answer 21 of the 25 questions on his history test correctly.what decimal represents the fraction of problem he answer incorrectly.