Mark has a pony nickel, dime, and quarter
in
his pocket. He randomly
selects a coin from his
pocket, replaces it, and
selects another coin What
is the probability that both
coins are pennies?
PLEASE HELP

What is the slope of the line shown below?

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

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.