**Answer**: D
Some triangles may have right angels but all triangles never have all 3 right angles
So the answer is D
Answer:
C 7 times 5 plus 7 times 4 is the answer
Answer:
no
Step-by-step explanation:
The set of perfect squares includes {0, 1, 4, 9, 16, 25, ...}.
Subtracting a couple of the elements, we get ...
4 - 1 = 3 . . . . not a member of the set
The set is NOT CLOSED under subtraction.
Answer:
zero
Step-by-step explanation:
A basic rule to remember with functions is that a function with a horizontal line always has a 0 slope.
Both Fred and Victoria are correct.
