Jeffrey thinks that the largest place value that 8.21 and 19.5 have in common is the tens place. austin thinks that the largest place value they have in common is the ones place. a.) who is correct, jeffrey or austin? b.) write how you would explain your answer to the person who answered incorrectly.

Anne is twice as old as bill, and bill is 3 years older than christie. the sum of anne s and christie s ages equal 72. find their age difference.?

Anyone know? will mark brainliest if correct!

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.