An isotope decays at a rate of 25% every decade. Find the adjusted rate of decay if it is calculated annually

grace would use 12 apple slices

29 is x=.7

30 is y=3.375 or 3 and 3/8

the figure is a concave pentagon.

step-by-step explanation:

in mathematical context, a pentagon is a flat, two-dimensional closed shape (polygon) with 5 straight sides and 5 angles.

now a pentagon is said to be concave if one or more corners bend inwards and at least one of its angles is 180 degrees or more than 180 degrees.

in the given figure, we can see that we have a corner which is bending inwards and an angle which is clearly greater than 180°. therefore, it is a concave pentagon.