Answer: The answers are
(i) The slope of segments DE and AC is not 0.
(ii) The coordinates of D and E were found using the Midpoint Formula.
Step-by-step explanation: We can easily see in the proof that the co-ordinates of D and E were found using the mid-point formula, not distance between two points formula. So, this is the first flaw in the Gina's proof.
Also, we see that the slope of line DE and AC, both are same, not equal to 0 but is equal to
which is 0 only if 
So, this is the second mistake.
Thus, the statements that corrects the flaw in Gina's proof are
(i) The slope of segments DE and AC is not 0.
(ii) The coordinates of D and E were found using the Midpoint Formula.
Answer:
Angle 1 = 156°
Step-by-step explanation:
The angle opposite 12 is also equal to 12 because the rhombus is split into two congruent triangles.
The other part about a rhombus is that the line angles in half meaning that where 12 is cut in half, the full angle is 24.
With this info, we now know that the other two angles that are in the triangle with angle 1 have a sum of 24°
Subtract: 180 - 24 = 156°
Answer:
Step-by-step explanation:
Answer:
C. 6 kg
Step-by-step explanation:
Let m represent the mass of plates on one side of the barbell. Then the total weight of the barbell is ...
2m +24 = 60 . . . . . kilograms
m +12 = 30 . . . . . . . divide by 2
m = 18 . . . . . . . . . . . subtract 12
The mass of plates on one side of the barbell must total 18 kg. If they all have the same mass, then that must be a divisor of 18. In whole numbers, that would include plates of mass 1, 2, 3, 6, 9, 18 kg.
The only one of these on your list of answer choices is ...
6 kg
