If it takes 1/2 hour to walk 2/7 of a field, how long will it take to walk the whole field

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Asphere has a diameter of 10 in. what is the volume of the sphere?

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.