W dwudziestopięcioosobowej klasie VI b chłopcy stanowią 60% wszystkich uczniów. 25% tych chłopców lubi jeździć na rolkach. ilu chłopców z klasy VI b lubi jeździć na rolkach? ​

Mr. walker gave his class the function f(x) = (x + 3)(x + 5). four students made a claim about the function. each student’s claim is below. jeremiah: the y-intercept is at (15, 0). lindsay: the x-intercepts are at (–3, 0) and (5, 0). stephen: the vertex is at (–4, –1). alexis: the midpoint between the x-intercepts is at (4, 0). which student’s claim about the function is correct?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Find two numbers if their sum is 91 and the ratio is 6: 7?