Triangle B: Two sides have length 10 cm, and the included angle measures 60°. Triangle C: Base has length 15 cm, and base angles measure 40°.
Triangle D: All angles measure 60°.
Which triangle is not a unique triangle? Triangle A Triangle B Triangle C Triangle D
Answer:
Triangle D is not a unique triangle.
Step-by-step explanation:
Triangle A: All sides have length 12 cm.
such a triangle will be a unique triangle and it will be an equilateral triangle.
Triangle B: Two sides have length 10 cm, and the included angle measures 60°.
Such a triangle will also be unique because with the help of the given angle measure and and the angles opposite to equal sides are equal we can find the measure of those two angles.
and hence we can construct a triangle with the help of these information.
Triangle C: Base has length 15 cm, and base angles measure 40°.
Such a triangle will also be unique as a unique triangle could be constructed with the help of these information.
Triangle D: All angles measure 60°.
Such a triangle will be an equilateral triangle but we can't say it will be unique as we can construct infinite number of triangles with different side lengths.
Hence such a triangle is not unique.
-20
-4
4
20
The addition is one of the four fundamental mathematical operations. The correct option is B.
The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.
Given that the price of a stock decreased $4 per day for 3 days and increased $2 per day for 4 days. Therefore, The change in the price of the stock is,
Change in the price = (-$4 × 3 days) + (+$2 × 4 days)
= -$12 + $8
= -$4
Hence, the correct option is B.
Learn more about Addition:
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Answer:
-4
Step-by-step explanation:
so 4 would be negative because it decreased and 2 would be positive because it increased so multiply -4 by 3 wich is -12 then add it by 2 times 4 which is 8 and it is -4