A stretch of highway that is 12\dfrac14124112, start fraction, 1, divided by, 4, end fraction kilometres long has speed limit signs every \dfrac7887start fraction, 7, divided by, 8, end fraction of a kilometre. How many speed limit signs are on this stretch of highway?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

In an improper fraction, is the numerator equal to, less than, or greater than the denominator