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iren [92.7K]
3 years ago
14

Evaluate a + (-b) where a = 4 and b =2

Mathematics
2 answers:
DochEvi [55]3 years ago
6 0

Answer:

2

Step-by-step explanation:

Given the expression : a + (-b)

where a = 4 and b = 2

Therefore: a + (-b) = 4 + (-2)

=4 - 2

= 2

kotegsom [21]3 years ago
5 0

Answer:

The answer is 2

Step-by-step explanation:

4 + (-2) = 2

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Find the coordinates of the midpoint of the segment with endpoints A(-5, 6) and B(3, 2). You must show all work in order to rece
OLga [1]
Midpoint Formula = M = ( \frac{ x_{1}+x_{2}}{2}) + ( \frac{ y_{1} + y_{2}} {2})

We are given the coordinates: A(-5,6) and B(3,2)
Plug the values into the equation to get:
M = ((3 - 5)/2, (2 + 6)/2)
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4 0
3 years ago
What is the determinant of <br><br>15<br><br>18<br><br>154
IgorC [24]

Answer:

The determinant is 15.

Step-by-step explanation:

You need to calculate the determinant of the given matrix.

1. Subtract column 3 multiplied by 3 from column 1 (C1=C1−(3)C3):

\left[\begin{array}{ccc}-25&-23&9\\0&3&1\\-5&5&3\end{array}\right]

2. Subtract column 3 multiplied by 3 from column 2 (C2=C2−(3)C3):

\left[\begin{array}{ccc}-25&-23&9\\0&0&1\\-5&-4&3\end{array}\right]

3. Expand along the row 2: (See attached picture).

We get that the answer is 15. The determinant is 15.

6 0
3 years ago
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