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Base in your question the triangle ABC is a triangle that is translated 6 units up and 3 units left and create a new triangle A'B'C'. So if a vertex A is located at a point of (-1,2) the possible coordinates of A' is (-4, 8) and i hope you are satisfied with my answer
Answer:

Step-by-step explanation:
step 1
<em>Calculate the volume of the cylinder (flower vase)</em>
The volume is equal to

we have
-----> the radius is half the diameter

substitute the values
------> exact value
step 2
Calculate 2/3 of the volume

Answer:
Amount of Niobium-91 initially
= 300/91 =3.2967mol
2040 years = 3 ×680 = 3 half-lives
therefore, amount left = 0.4121mol
mass of Niobium-91 remaining = 0.4121 ×91 =37.5g
Please give brainliest