B(5,1) I’m smart and don’t worry the answer is correct
We need to find the area of the package
10 times 12 times 1 is 120
the package is 120 in squared
each cube that holds one ring is 1 inch and there are 120 inches
so the jewelry store reveiced 120 rings.
the explaination. to find how many rings are in a package we need to find the volume of that package. Then once we have that we need to find how many of the cubes can fit into that area.
Well to find the angles, simply see what must the angles be, to equal to 180 or 90 degrees. So we know the angle between C and D would be 90 degrees, so will the angle between A and C. The angle between B and A and the angle between B and C must give us a total of 90 degrees, so that means each would be 45 degrees. As 45 + 45 = 90. Also I would assume that angle between D and F would also be the same as between B and A which would be 45 degrees. Finally the angle between A and F would be the difference between 180 and 45 degrees. So it would be 180 - 45 = 135 degrees.
Answer:
21 + 220i
Step-by-step explanation:
reminder that i² = - 1
(- 11 - 10i)²
= (- 11 - 10i)(- 11 - 10i) ← expand using FOIL
= 121 + 110I + 110I + 100I²
= 121 + 220I + 100(- 1)
= 121 + 220i - 100
= 21 + 220i
