Draw a scaled copy of the circle using a scale factor of 2.

how does the circumference of the scaled copy compare to the circumference of the original circle?

how does the area of the scaled copy compare to the area of the original circle?

a circle with the center marked with a dot.

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

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

Find the arc length of the semicircle. 7the grade