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matrenka [14]
2 years ago
7

Find the matrix product, if possible.

Mathematics
1 answer:
kondor19780726 [428]2 years ago
3 0

Answer:

below.

Step-by-step explanation:

The number of columns in the first matrix must equal to the number of rows in the second for multiplication to be possible.

Here first matrix has 3 columns and second one has 3 rows so POSSIBLE.

[ -8 2 2]    { 3 }

                [ 0 ]

                [ -3]

=  -8*3  + 2*0 + 2 * -3 = [-30]  <-------- Answer.

Note  a  1*3 matrix multiplied by a 1*3 matrix gives a 1*1 result.

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A complete table with values for x or y that make this equation true:3x+y=15
Reika [66]

Answer:

Table is attached

Step-by-step explanation:

We are given equation as

3x+y=15

We will complete each column

First column:

we are given x=2 and we have to find y

3\times 2+y=15

6+y=15

y=9

Second column:

we are given y=3 and we have to find x

3x+3=15

3x=12

x=4

Third column:

we are given x=6 and we have to find y

3\times 6+y=15

18+y=12

y=-6

Fourth column:

we are given x=0 and we have to find y

3\times 0+y=15

0+y=15

y=15

Fifth column:

we are given x=3 and we have to find y

3\times 3+y=15

9+y=15

y=6

Sixth column:

we are given y=0 and we have to find x

3x+0=15

3x=15

x=5

Seventh column:

we are given y=8 and we have to find x

3x+8=15

3x=7

x=\frac{7}{3}

now, we can complete table



8 0
3 years ago
The ratio in the table for red balls to blue balls is constant in each column. Let r = number of red balls corresponding to 16 b
Ne4ueva [31]

Answer:

b

Step-by-step explanation:

16 red balls corresponding to

4 0
2 years ago
Another name for a dummy variable is a binary variable.a.Trueb.False
Sveta_85 [38]
Another name for a dummy variable is a binary variable
a.True
7 0
3 years ago
How to find the x-intercept of of y+12=3(x-9)?
tester [92]
To find the x intercept, sub in 0 for y and solve for x

y + 12 = 3(x - 9)
0 + 12 = 3x - 27
12 = 3x - 27
12 + 27 = 3x
39 = 3x
39/3 = x
13 = x.....so ur x int is 13 or (13,0) <==

and if u wanted to find the y int, u could sub in 0 for x and solve for y
7 0
3 years ago
An item is regularly priced at $25. Kaitlin bought it on sale for 20% off the regular price. How much did Kaitlin pay?
horsena [70]

Answer:

$20

Step-by-step explanation:

25 x (20/100) = 5

25 - 5 = 20

8 0
3 years ago
Read 2 more answers
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