Joelene wanted to find the area of her rectangular back yard. She measured the length of the yard as 21 m and the width as 9 m.
Later, the actual dimensions of the yard were more accurately measured as 20.8 m and 9.2 m.

What is the relative error in her area calculation to the nearest thousandth?

A.) 0.012
B.) 0.013
C.) 0.015
D.) 0.018

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Shared decision making is always a positive strategy to take