The formula for finding the circumference of a circle with radius, r, is circumference = 2π r. what is the formula for the circumference of a circle with radius r/2? a. circumference = π r/4 b. circumference = π r/2 c. circumference = π r d. circumference = 4π r

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?

There are a total of 75 students in the robotics club and science club. the science club has 9 more students than the robotics club. how many students are in the science club?

Given right triangle abc, what is the value of tan(a)?