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3241004551 [841]
4 years ago
15

Which system of equations is represented by the graph?

Mathematics
1 answer:
motikmotik4 years ago
8 0

Answer:

A

Step-by-step explanation:

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Does have an inverse? Why or why not?
Mkey [24]

A

A square matrix is invertible if its determinant is not zero.

The determinant for this matrix is

\begin{vmatrix}4&8\\7&14\end{vmatrix} = 4\cdot14 - 8\cdot7 = 56 - 56 = 0

so it does not have an inverse because its determinant is zero.

5 0
3 years ago
What is the equation of a line that passes through the points (–3, 4) and (2, 8)?
sveta [45]

Answer:

=5

Step-by-step explanation:

4-9= -5

2-3 = -1

=5

.....

3 0
3 years ago
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Worth 10 points please help me
Bumek [7]

Answer:

the co_ordinate of d is 0

3 0
3 years ago
Which of the following is the result of expanding
andrey2020 [161]

The given expression is 2x-3 .

So when x =1, we will get 2(1)-3 = 2-3 =-1

When x=2, we will get, 2(2) -3 = 4-3 =1

When x=3, we will get 2(3)-3 = 6-3=3

When x=4, we will get 2(4)-3 = 8-3=5

So the required result of the expansion is -1+1+3+5=8

Correct option is the second option .

7 0
4 years ago
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Which ordered pair is a solution to the inequality?<br><br> Help please!!
Murrr4er [49]

Choice A is the answer which is the point (1,-1)

=========================================

How I got this answer:

Plug each point into the inequality. If you get a true statement after simplifying, then that point is in the solution set and therefore a solution. Otherwise, it's not a solution.

-------------

checking choice A

plug in (x,y) = (1,-1)

y - 2x \le -3

-1 - 2(1) \le -3

-3 \le -3

This is true because -3 is equal to itself. So this is the answer.

-------------

checking choice B

plug in (x,y) = (2,4)

y - 2x \le -3

4 - 2(2) \le -3

0 \le -3

This is false because 0 is not to the left of -3, nor is 0 equal to -3. We can cross this off the list.

-------------

checking choice C

plug in (x,y) = (-2,3)

y - 2x \le -3

3 - 2(-2) \le -3

7 \le -3

This is false because 7 is not to the left of -3, nor is 7 equal to -3. We can cross this off the list.

-------------

checking choice D

plug in (x,y) = (3,4)

y - 2x \le -3

4 - 2(3) \le -3

-2 \le -3

This is false because -2 is not to the left of -3, nor is -2 equal to -3. We can cross this off the list.


4 0
3 years ago
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