It has been calculated that the average baby uses 3,528 nappies which end up in landfill sites.

there were 24,476 births last year in northern ireland.

by rounding each of these figures to 1 significant figure, estimate the number of nappies that will be used.

(give your answer in millions to 1 significant figure.)

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Is the figure congruent? yes or no?