The diameter of a circle is 15 cm. Find its circumference in terms of Pi

What is the first step of an indirect proof of a number that is divisible by two

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625