Conor had 5 times more 20c coins than Alex. Conor had €4. How many 20c coins did Alex have?​

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0