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Reptile [31]
3 years ago
14

Important reminder for the weebs _ - - - - - - -

Mathematics
2 answers:
RideAnS [48]3 years ago
6 0

Answer:

I wish I could... T-T

Step-by-step explanation:

sukhopar [10]3 years ago
6 0

Answer:

what's that ??? I don't understand

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If two matrices, A and B, are equal, which of the
alexandr402 [8]

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:

A=B=\left[\begin{array}{cc}1&2\\4&5\\7&8\end{array}\right]

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.

8 0
3 years ago
Read 2 more answers
two parallel lines are graphed on a coordinate plane.how many of the lines could represent proportional relationship?Explain.
soldi70 [24.7K]

It's not necessary that either one represents a proportional
relationship.  But if either one does, then the other one doesn't. 
They can't both represent such a relationship.

The graph of a proportional relationship must go through
the origin.  If one of a pair of parallel lines goes through
the origin, then the other one doesn't. (If two parallel lines
both went through the origin, then they would both be the
same line.)

7 0
3 years ago
Read 2 more answers
PLZ HELP ME AND HURRRY
schepotkina [342]

Answer:

for the third question y = 5, x = 3

Step-by-step explanation:

6 0
3 years ago
What is the are of a circle that measures 12 ft in diameter?<br>​
Alexus [3.1K]

Answer:

113.04

Step-by-step explanation:

the equation for the area of a circle is pie times radius squared

5 0
2 years ago
For a moving object, the force is acting on the object varies directly with the object’s acceleration. When a force of 9 N acts
svetlana [45]

Answer:

12 Newtons

Step-by-step explanation:

We can use Newton’s Second Law to find the mass first.

F = ma

9 = 3m

mass = 3

Substitute this into the second equation.

F = ma

F = 3(4)

F = 12N

Hope this helps! :D

8 0
2 years ago
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