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Sloan [31]
3 years ago
10

4x - 2y - 5z = -51 4x - y – 2z = -36 4x - 2y + 4z = -24

Mathematics
1 answer:
Triss [41]3 years ago
8 0

Answer: x = -6; y = 6 and z = 3

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Mrs Larsen made 12 pillows from 16 yards of the same fabric. How much fabric was used to make each pillow? between what two whol
Zepler [3.9K]
Yards per pillow.....yds/pillow....make sure u put the yds over the pillows when dividing

16/12 = 1.33 (or 1 1/3) yds per pillow....this lies between 1 and 2 yds
4 0
3 years ago
Please help!!!! :)))))))
Tanzania [10]

Answer:

10 units

Step-by-step explanation:

1. Do the square in the middle

2 x 2 = 4

2. Do the triangle on the left

2 x 2 divided by 2 = 2

3. Do the triangle on the right

4 x 2 divided by 2 = 4

4. Add them all up

4 + 2 + 4 = 10

8 0
2 years ago
Read 2 more answers
A car travels 568km in 8 1/2 hours. What is the average speed in meters/second?
GaryK [48]

Answer:

The speed would be 60kph

60/60=1

Step-by-step explanation:

60x24=1,440

It would at a speed of 1,440km per day.

In a year it would go 525,600 km.

Every nanosecond it would go 0.0001 cm.

3 0
2 years ago
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Use a matrix to solve the system:
Romashka-Z-Leto [24]

Answer:

(2.83 , 1 , 4)

Step-by-step explanation:

2x+2y-z=4\\4x-2y-2z=2\\3x+3y-4z=-4\\

Rewrite these equations in matrix form

\left[\begin{array}{ccc}2&2&-1\\4&-2&-2\\3&3&-4\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\

we can write it like this,

AX=B\\X=A^{-1}B

so to solve it we need to take the inverse of the 3 x 3 matrix A then multiply it by B.

We get the inverse of matrix A,

A^{-1}=\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right]  \\

now multiply the matrix with B

X=A^{-1}B\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}7/15&1/6&-1/5\\1/3&-1/6&0\\3/5&0&-2/5\end{array}\right]\left[\begin{array}{ccc}4\\2\\-4\end{array}\right] \\\\\\\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}2.83\\1\\4\end{array}\right] \\

4 0
2 years ago
Select the correct answer.<br> Which of these graphs represents a function?
enyata [817]

Answer:

W.

Step-by-step explanation:

Because it's a cubic function which means it has to be a function because it literally has function in it.

7 0
2 years ago
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