Answer:
50
Step-by-step explanation:
-2.5 × -20
negative multiply negative equals positive
(-) × (-) = (+)
so, the answer would be positive.
-2.5 × -20
= <u>5</u><u>0</u>
Answer: the answer is 25 percent
Step-by-step explanation: 25 percent times 48 is 12
<h2>
Hello!</h2>
The answer is:
The correct option is the option D

<h2>
Why?</h2>
To calculate the acceleration, we need to use the following formula that involves the given information (initial speed, final speed, and time).
We need to use the following free fall equation:

Where:
is the final speed.
is the initial speed.
g is the acceleration due to gravity.
t is the time.
We are given the following information:



Then, using the formula to isolate the acceleration, we have:


Now, substituting we have:


Therefore, since we are looking for a magnitude, we have that the obtained value will be positive, so:

Hence, the correct option is the option D

Have a nice day!
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]](https://tex.z-dn.net/?f=A%3DB%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D1%262%5C%5C4%265%5C%5C7%268%5Cend%7Barray%7D%5Cright%5D)
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.