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tatiyna
2 years ago
14

Solve each system by elimination 9x - 6y = -21 and -9x + 9y = 18

Mathematics
2 answers:
IrinaK [193]2 years ago
7 0

Answer:

X= -3, Y= -1

Step-by-step explanation:

loris [4]2 years ago
6 0
<h2>Answer</h2>

= {x, y}

= {-1.-3}

X = -1

Y = -3

<h2>Explain</h2>

Look at the picture :)

#LearnWithBrainly

<h3>gak bisa bahasa inggris</h3>

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ra1l [238]
<h3>Answer:   5</h3>

=================================================

Work Shown:

x^2 - 5x + 1 = 0

x^2 + 1 - 5x = 0

x^2 + 1 = 5x

(x^2 + 1)/x = 5    .... where x is nonzero

(x^2)/x + (1/x) = 5

x + (1/x) = 5

---------------

An alternative method involves solving the original equation using the quadratic formula. After you get the two roots x = p and x = q, you should be able to find that p + 1/p = 5 and also q + 1/q = 5 as well.

In this case,

p = (5 + sqrt(21))/2

q = (5 - sqrt(21))/2

8 0
2 years ago
Read 2 more answers
Someone please help myst teacher never explains the hw
harina [27]

Answer:

Prob gonna be prob b

Step-by-step explanation:

3 0
3 years ago
The coordinates A(0,0) B(0,4) C(3,4) and D(3,0) are graphed and connected together. What 3 dimensional shape will be created whe
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All you have to do is rotate the current dots, and bam.

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3 years ago
In the triangle below,
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Answer:

12.3

Step-by-step explanation:

You will use cosine to solve for y because you are given the hypontenuse and need to find the adjacent side.

cos 35 degrees = adjacent/hypontenuse

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