mshields1994

22.04.2020 • 

Mathematics

The following is an incorrect flowchart proving that point L, lying on line LM which is a perpendicular bisector of segment JK , is equidistant from points J and K:

Segment JK intersects line LM at point N

Line LM is a perpendicular bisector of segment JK, Given. Two arrows are drawn from this statement to the following two stateme

What is the error in this flowchart? (5 points)

JL and KL are equal in length, according to the definition of a midpoint.

The arrow between ΔJNL ≅ ΔKNL and segment J L is congruent to segment K L points in the wrong direction.

An arrow is missing between the given statement and ∠ LNK ≅ ∠ LNJ..

Triangles JNL and KNL are congruent by Side-Angle-Side (SAS) Postulate instead of Angle-Angle-Side (AAS) Postulate.

Ответ:

anggar20

30.10.2021

Mathematics

---

If A and B are equal:

Matrix A must be a diagonal matrix: FALSE.

We only know that A and B are equal, so they can both be non-diagonal matrices. Here's a counterexample:

Both matrices must be square: FALSE.

We only know that A and B are equal, so they can both be non-square matrices. The previous counterexample still works

Both matrices must be the same size: TRUE

If A and B are equal, they are literally the same matrix. So, in particular, they also share the size.

For any value of i, j; aij = bij: TRUE

Assuming that there was a small typo in the question, this is also true: two matrices are equal if the correspondent entries are the same.

---

0,0(0 оценок)