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andriy [413]
3 years ago
10

31. What is the solution to the system of equations? -7x-2y+z=-2 6x-y-z=-18 5x+4y-z=18

Mathematics
1 answer:
Law Incorporation [45]3 years ago
8 0

Answer:

x = -1, y = 7, z = 5

  1. -7 -2 -1 -2
  2. 6 -1 -1 -18
  3. 5 4 -1 18

use 2. - 3.

= -1 -5 0 -36 --- 4.

use 1. + 2.

= -1 -3 0 -20 --- 5.

use 4. + 5.

= 0 -8 0 -56

=> y = 7

y = 7 back into 5.:

x - 35 = -36

=> x = -1

x = -1 and y = 7 back into 1.:

7 - 14 + z = -2

=> z = 5

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Jim buys a car for $22,500. He decides to finance through the dealership at 3.5% simple interest for 5.5 years. How much interes
borishaifa [10]

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7 0
3 years ago
Need help please !!!
blsea [12.9K]

Answer:

option C is the correct answer

Step-by-step explanation:

The trigonometric equation you are using has a general form

y = A* tan w*(x - r)

Where

A is the amplitude of the function

w is the frequency rad/s

r  is the phase shift

In your case

A = -2

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w = 8

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7 0
2 years ago
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