Which of the following is not a characteristic of non-euclidean geometry? . a.. space is saddle-curved.. b.. the sum of the angles in a triangle is always 180.. c.. the parallel postulate is false.. d.. there are no straight lines.

Kevin and randy muise have a jar containing 78 coins, all of which are either quarters or nickels. the total value of the coins in the jar is $13.90. how many of each type of coin do they have?

What is the solution to the equation in the & show work i’m very

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.