Un estudiante obtiene 76% y 65% en sus primeras tres evaluaciones. asumiendo que todas las evaluaciones tienen el mismo peso, cuanto debería obtener en su cuarta evaluación para que su promedio final sea mayor de 80%?

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?

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?