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Julli [10]
2 years ago
7

What is the value of y = 3x -1 when x is equal to 4?

Mathematics
1 answer:
UkoKoshka [18]2 years ago
8 0
-11
I guess
Explanation
I don’t know the answer yes I am that dum
Ashiii
He is a picture for motivation

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If the hypotenuse of a right triangle is 11 and one leg is 2, what is the length of the other leg?
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3 years ago
Solve the following system. Please show me how you did it.
Andrej [43]

Answer:

x = 3, y = 4 and z = -5.

Step-by-step explanation:

Use the elimination method:

-3x + 2y + z = -6...........(1)

x + 3y + 2z = 5..............(2)

4x + 4y + 3z = 13..........(3)

Multiply the first equation by -2:

6x - 4y - 2z = 12   Add this to equation (2):

7x  - y  = 17...........(4)

Now Multiply equation (2) by 3 and equation (3) by -2

3x + 9y + 6z = 15 ............(5)

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-5x + y = -11..........(7)

Now Add (7) and (4):

2x = 6

x = 3.

Now  substitute for x in (4):

7(3) - y = 17

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y = 4.

Finally substitute for x and y in equation (3) to find z:

4(3) + 4(4)  +3z = 13

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z = -5.

4 0
2 years ago
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