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3 years ago

Solve for x.

Mathematics

2 answers:

marusya05 [52]3 years ago

6 0

The answer is B) x=-3y-8

Ghella [55]3 years ago

3 0

Answer:

Answer is below

Step-by-step explanation:

Always remember to flip the equation

$x+8=3y$

Add -8 to both sides.

$x+8+-8=3y+-8\\x=3y-8$

So therefore, your answer is B

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3 years ago

The lines y=3x-1 and y=ax+2 are perpendicular if a=___

mezya [45]

Answer:

$a = \frac{-1}{3}.$

Step-by-step explanation:

The equation of line in the form .

y = mx + c

Where m is the slope and c is the y- intercept .

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8 0

3 years ago

Read 2 more answers

Which two numbers add up to 6 and muliply to -126

SashulF [63]

Xy=-126
x+y=6
minus x

y=6-x
sub
x(6-x)=-126
6x-x^2=-126
minus (6x-x^2) both sides
0=x^2-6x-126

in form
ax^2+bx+c=0
x= $\frac{ -b+/-\sqrt{b^{2}-4ac} }{2a}$

a=1
b=-6
c=-126

x= $\frac{ -(-6)+/-\sqrt{(-6)^{2}-4(1)(-126)} }{2(1)}$
x= $\frac{ 6+/-\sqrt{36+504} }{2}$
x= $\frac{ 6+/-\sqrt{540} }{2}$
x= $\frac{ 6+/-6\sqrt{150} }{2}$
x= $3+/-3\sqrt{150}$

the numbers are
$3+3\sqrt{150}$ and $3-3\sqrt{150}$

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3 years ago