Ally dropped a stone from the top of a cliff. the height of the stone throughout its flight is shown below.

select the most appropriate unit to measure the amount of time that the stone remains in the air.

seconds
minutes
milliseconds
hours

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.

When is g(x) = 0 for the function g(x) = 5.23x + 4?

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer