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Natasha_Volkova [10]
3 years ago
9

PLEASE HELP KZKKSOvnfkdjd for sloeidkcncnsk get callallapwd

Mathematics
1 answer:
astraxan [27]3 years ago
7 0
S = -3...

get rid of your fraction by multiplying everything by 12...

now minus each side by 60

that leaves you -3 because the right side was 57.
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Karolina [17]

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1.7724538509

Step-by-step explanation:

I used a calculator

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3 years ago
Can someone please help <br> ill give you a brainlist
posledela

Answer:

y = -3x - 6

Step-by-step explanation:

Your y-intercept is given as b = -6

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5 0
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55. If 3x = 4y, the value of (x + y)^2 : (x - y)^2 is:<br>​
ladessa [460]

Answer:

\large\boxed{(x+y)^2:(x-y)^2=49}

Step-by-step explanation:

3x=4y\qquad\text{subtract}\ 3y\ \text{from both sides}\\\\3x-3y=y\qquad\text{distributive}\\\\3(x-y)=y\qquad\text{divide both sides by 3}\\\\x-y=\dfrac{y}{3}\qquad(*)\\------------------\\3x=4y\qquad\text{add}\ 3y\ \text{to both sides}\\\\3x+3y=7y\qquad\text{distributive}\\\\3(x+y)=7y\qquad\text{divide both sides by 3}\\\\x+y=\dfrac{7y}{3}\qquad(**)\\------------------

(x+y)^2:(x-y)^2=\dfrac{(x+y)^2}{(x-y)^2}\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\=\left(\dfrac{x+y}{x-y}\right)^2\qquad\text{substitute}\ (*)\ \text{and}\ (**)\\\\=\left(\dfrac{\frac{7y}{3}}{\frac{y}{3}}\right)^2=\left(\dfrac{7y}{3}\cdot\dfrac{3}{y}\right)^2\qquad\text{cancel}\ 3\ \text{and}\ y\\\\=(7)^2=49

5 0
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Name
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3 0
3 years ago
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zalisa [80]

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Step-by-step explanation:

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I hope I helped!

4 0
3 years ago
Read 2 more answers
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