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2 years ago

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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adelina 88 [10]

Answer:

b ≈ 9.5, c ≈ 14.7

Step-by-step explanation:

Using the Sine rule in Δ ABC, that is

$\frac{a}{sinA}$ = $\frac{b}{sinB}$ , substitute values

$\frac{7}{sin23}$ = $\frac{b}{sin32}$ ( cross- multiply )

b × sin23° = 7 × sin32° ( divide both sides by sin23° )

b = $\frac{7sin32}{sin23}$ ≈ 9.5 ( to the nearest tenth )

Also

$\frac{a}{sinA}$ = $\frac{c}{sinC}$

$\frac{7}{sin23}$ = $\frac{c}{sin125}$ ( cross- multiply )

c × sin23° = 7 × sin125° ( divide both sides by sin23° )

c = $\frac{7sin125}{sin23}$ ≈ 14.7 ( to the nearest tenth )

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2 years ago

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stealth61 [152]

<span>NEVER use a lower case L as a variable
.
$5M+$8L=$45
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Medium only:
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2 years ago

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gladu [14]

Answer:

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Answer:

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Step-by-step explanation:

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