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Vikentia [17]
3 years ago
7

Evaluate the determinant for the following matrix: [-5 1, 1 4]

Mathematics
2 answers:
MrRissso [65]3 years ago
4 0
The matrix given is \left[\begin{array}{ccc}-5&1\\1&4\end{array}\right]

To find determinant \left[\begin{array}{ccc}a&b\\c&d\end{array}\right] we do ad-bc

So, the determinant of the given matrix is
(-5)(4)-(1)(4) = -20 - 4 = -24
nalin [4]3 years ago
3 0

Answer: -24

Step-by-step explanation:

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Question 9: You have 2/3 of a pumpkin pie left over from Thanksgiving. You want to give 1/2 of it to your sister. How
Sophie [7]

Answer:

1/3

Step-by-step explanation:

1/2 of 2/3 = 1/3

5 0
3 years ago
What is the rule for finding the coordinates of an image reflected over the line y=-x
joja [24]
You can find the coordinates of any graph by using a coordinate table, which looks as so in the chart provided below.

What you do is you, put in the letter x and then put what y is equal to in the second box. You plug in any number for x and you solve in order to find the y coordinate. Once you do, for example for plugging in -1 into x you get 1. So your coordinate would be (-1,1).

8 0
3 years ago
Read 2 more answers
What is the equation of the line passing through the points (3,6) and (2,10)
andrezito [222]

Answer: y= - 4x+18

Step-by-step explanation:

Equation: y=mx+b

***remember: b is the y-intercept and m is the slope.

m=\frac{y2-y1}{x2-x1}

3= x1

2= x2

6= y1

10=y2

m=\frac{10-6}{2-3}= \frac{4}{1}= -4

m=-4

Now we have y=-4x+b , so let's find b.

You can use either (x,y) such as (3,6) or (2,10) point you want..the answer will be the same:

   (3,6). y=mx+b or 6=-4 × 3+b, or solving for b: b=6-(-4)(3). b=18.

   (2,10). y=mx+b or 10=-4 × 2+b, or solving for b: b=10-(-4)(2). b=18.

Equation of the line: y=-4x+18

3 0
3 years ago
What is (2x+1) (3x+2)?
Pie

Answer:

In picture...

Step-by-step explanation:

I solved it step by step in picture. U can have a look

✌️

7 0
3 years ago
Read 2 more answers
Solve and graph the following inequality: 3(7x+17) > -19 + 14x
love history [14]

Answer:

Solving the inequality we get: \mathbf{x>-7}

Step-by-step explanation:

We need to solve and graph the inequality 3(7x+17) > -19 + 14x

Solving:

3(7x+17) > -19 + 14x

Step 1: Multiply  3 with terms inside the bracket

21x+51 > -19 + 14x

Step 2:Subtracting 51 on both sides

21x+51-51 > -19 + 14x-51\\21x>14x-70\\

Step 3: Subtract 14x on both sides

21x-14x>+14x-70-14x\\7x>-70

Step 4: Divide both sides by 7

\frac{7x}{7}>\frac{-70}{7}\\x>-10

Solving the inequality we get: \mathbf{x>-7}

The graph is attached in the figure below.

5 0
3 years ago
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