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Vinil7 [7]
3 years ago
12

Solve the following system of equations by using the inverse of a matrix.

Mathematics
1 answer:
Zepler [3.9K]3 years ago
6 0

Answer:

(x, y, z) = (-8,4,-2)

Step-by-step explanation:

.......................................

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What is the equation of the line that is parallel to the line 5x + 2y = 12 and passes through the point (-2, 4)?
Aneli [31]

Answer: 5x + 2y = -2

Step-by-step explanation:

Change 5x+2y=12 to slope intercept: 2y = 12 - 5x, y = -5x/2 + 6

A parallel line has the same slope, so the line we try to find is y = -5x/2 + b.

Substitute (-2, 4) in and get 4=5+b, so b = -1.

Therefore the answer is y = -5x/2 - 1, or if you want it in the original form it would be 2y = -5x - 2 ---> 5x+2y = -2.

Hope that helped,

-sirswagger21

7 0
3 years ago
Nour drove from the Dead Sea up to Amman, and her altitude increased at a constant rate. When she began driving, her altitude wa
labwork [276]

Answer:

y = - 400 + 700x

Step-by-step explanation:

Nour's altitude increased at a constant rate from the Dead Sea up to Amman.

Initially, her altitude was 400 meters below from the sea level and then she arrived at an altitude was 1000 meters above sea level arrived to Amman, 2 hours later.  

So, she moves (400 + 1000) = 1400 meters in 2 hours.

Therefore, her rate of change of altitude is \frac{1400}{2} = 700 meters per hour.

Therefore, if y represents Nour's altitude in meters relative to the sea level after x hours then the relationship between the altitude and number of hours is given by  

y = - 400 + 700x  (Answer)

7 0
3 years ago
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The price of a cd is $16 if the sales tax is 4% what will be the total price of the cd
djverab [1.8K]
Well u would turn 4 into a decimal. this is 0.04. then multiply it by 16. that answer will be added to the original price 16. this would be the answer.
6 0
3 years ago
The first two steps in the derivation of the quadratic formula by completing the square are shown below.
lidiya [134]

Answer:C

Step-by-step explanation:

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3 years ago
*** WHITE Given m|n, find the value of x. (2x-3) (6X+17)​
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Step-by-step explanation:

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3 years ago
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