Question 4.
The diagram shows various measurements of a field. Calculate the perimeter to the nearest metre.

For the second triangle, the base is eight plus three. Also, for the first triangle, there is another triangle that has the exact same measurement so that's why I added 20 with 20. The perimeter is 175 m
Hope this helps :)

This is too long-standing now get out

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.