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The parabola has a turning point at (z,-8); it intersects the y-axis a y=10 and one of the x-intercepts is x=5. Find: a) The value of z b) The equation of the parabola Please help :/

The parabola has a turning point at (z,-8); it intersects the y-axis a y=10 and one of the x-intercepts is x=5. Find: a) The value of z b) The equation of the parabola

When I place it into the formula though, I get 2.926 (Before multiplying it by 2 and subtracting 9)

A ball has the property that when it falls from a height h to the ground it rebounds to a height of 2/3h. If a ball is dropped from a height of 9m, find: a) How far has it travelled altogether by the time it hits the ground for the fourth time? b) Theoretically, how far will it travel before...

thank you that makes sense :)

Find three numbers in an arithmetic sequence whose sum is 33 and whose product is 1320 Been trying to find it all day, could someone shed some light please? >:(