Howland middle school assigns a four digit identification number to each student. the number is made from the digits 1,2,3, and 4, and no digit is repeated. if assigned randomly, what is the probability that an id number will end with a 3?

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles