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3 years ago

What are x,y, and z if x+y+4z=5, -2x+2z, 3x+y+2z=-1, i am desperate

Mathematics

1 answer:

natulia [17]3 years ago

6 0

Answer:

how I learned it in school was that the variable had to always equal something, so you would have to put on the side or where ever x=(a number) and also you multiply those numbers cause no sign would mean multiply (I'm so sorry if it's not write though, I hope I could help you a little)

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Solve the system of equations by substitution

fenix001 [56]

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2 years ago

Rewrite this standard form quadratic equation into vertex form by completing the square. Upload your work here to show your thin

Alex787 [66]

Solution :

Given the equation :

$y = x^2 - 6x+3$

$y=1(x^2 - 6x +n)+3$

$n = \left(\frac{b}{2}\right)^2$

$n = \left(\frac{6}{2}\right)^2$

n = 9

$y=1(x^2 - 6x +9-9)+3$

$y=1(x^2 - 6x +9)-9+3$

$y=1(x-3)^2- 6$

Therefore the vertex form of $y = x^2 - 6x+3$ is $y=1(x-3)^2- 6$ .

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3 years ago

Which of the following is an example of a permutation?

Yuki888 [10]

Permutation

Step-by-step explanation:

Permutation is an example of the mathematics in which item are arranged in different way.
For example ABC, ACB, BCA, CBA, CAB, BAC etc.
The order of an arrangement are different in each alphabet.
The product of number also be defined as in the form of n to 1
for example : 5*4*3*2*1 = 120

Learn more: permutation

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6 0

3 years ago

NEED HELP ASAP ! answers !

bazaltina [42]

Answer:

92 degrees

Step-by-step explanation:

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3 years ago

Write this percentage as a fraction in its simplest form.<br> 20%

Kobotan [32]

Answer:

it is 1/5

Step-by-step explanation:

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

7 0

3 years ago