Answer:
0.81 & 0.83
Step-by-step explanation:
Well, since it is asking for an average, we have to add
78+89+87+96=
350... then we divide by 4
which would be 87.5 which IS greater than 80 :)
and less than 90 :)
A distance-time graph tells us how far an object has moved with time. The steeper the graph, the faster the motion. A horizontal line means the object is not changing its position - it is not moving, it is at rest. A downward sloping line means the object is returning to the start.
The area of the shaded region is 
<h2>Area of composite objects</h2>
The area of the shaded region is expressed according to the formula:
Get the area of the square As
As = a²

Take the difference in the areas
Area of the shaded part = 
Area of the shaded part = 
Hence the area of the shaded region is 
Learn more on area of composite objects here: brainly.com/question/22716761
Answer:
The height of the right trapezoid is 
Step-by-step explanation:
Let
x ----> the height of the right trapezoid in units
we know that
The perimeter of the figure is equal to
we have

---> because is a square
substitute
-----> equation A
<em>In the right triangle CDH</em>


so
Remember that 




so


substitute the values in the equation A
-----> equation A




![6=x[5+\sqrt{3}]](https://tex.z-dn.net/?f=6%3Dx%5B5%2B%5Csqrt%7B3%7D%5D)
