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3 years ago

HI I NEED THIS ANSWER PRONTO!!

Mathematics

2 answers:

pav-90 [236]3 years ago

4 0

Answer:

using the formula( y2-y1/x2-x1 = m)

m= slope

9 - (-2)/-9 -2 =m

11/ -11 = m

m= -1( slope)

since m is also = y- y1/ x-x1

y - (-2)/ x- 2 = -1= y +2 / x -2 = -1 (cross multipy)

-1 (x -2) = y +2

-x +2 = y + 2

-x -y = 2 -2

-x - y = 0(multiply both sides by -1)

x + y = 0

Step-by-step explanation:

PLS MARK BRAINLIEST

Inga [223]3 years ago

3 0

This is correct Y+2=-1•(x-2) in point slope form

or

Y=-x for intercept form

:)

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Twice the sum of x and y decreased by 23

Andrew [12]

Answer:

2(x+y) - 23 or

2x + 2y - 23

Step-by-step explanation:

twice the sum of x and y means

2(x+y)

decreased means minus or -

decreased by 23 means

- 23

twice the sum of x and y decreased by 23

2(x+y) - 23

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1 year ago

Please help, solve for x and n

Vlada [557]

Answer:

1. $\boxed{ \bold{ \huge{ \boxed{ \sf{x = 1}}}}}$

2. $\boxed{ \bold{ \huge{ \boxed{ \sf{n = - 5}}}}}$

Step-by-step explanation:

1. $\sf{ \frac{6}{x + 1} = \frac{3}{x} }$

Do cross multiplication

$\dashrightarrow{ \sf{6x = 3(x + 1)}}$

Distribute 3 through the parentheses

$\dashrightarrow{ \sf{6x = 3x + 3}}$

Move 3x to left hand side and change it's sign

$\dashrightarrow{ \sf{6x - 3x = 3}}$

Collect like terms

$\dashrightarrow{ \sf{3x = 3}}$

Divide both sides by 3

$\dashrightarrow{ \sf{ \frac{3x}{3} = \frac{3}{3} }}$

Calculate

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2. $\sf{ \frac{2}{6} = \frac{2n + 8}{n - 1}}$

Do cross multiplication

$\dashrightarrow{ \sf{2(n - 1) = 6(2n + 8)}}$

Distribute 2 through the parentheses

Similarly, distribute 6 through the parentheses

$\dashrightarrow{ \sf{2n - 2 = 12n + 48}}$

Move 12n to left hand side and change it's sign

Similarly, move 48 to right hand side and change it's sign

$\dashrightarrow{ \sf{2n - 12n = 48 + 2}}$

Collect like terms

$\dashrightarrow{ \sf{ - 10n = 48 + 2}}$

Add the numbers : 48 and 2

$\dashrightarrow{ \sf{ - 10n = 50}}$

Divide both sides by -10

$\dashrightarrow{ \sf{ \frac{ - 10n}{ - 10} = \frac{50}{ - 10} }}$

Calculate

$\dashrightarrow{ \sf{n = - 5}}$

The value of n is -5 .

Hope I helped!

Best regards! :D

7 0

3 years ago

Help help math straightforward answer ASAP pelsss thanks

Sav [38]

Answer:

55 degrees

Step-by-step explanation:

a line is 180 degrees. also, all angles in any triangle add up to 180 degrees. so, find the missing angle in the triangle by 180-30-25=125 degrees. Then to find angle 4, 180-125=55 degrees.

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3 years ago

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The exponential function that represents the table is $y =2\times 2^x$

<h3>What is an exponential function?</h3>

An exponential function is any function that has its constant raised to the power of an argument.

An exponential function is represented as:

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Where:

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From the table we have the following ordered pair

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So, we have:

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Also, we have:

$y = ab^x$

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Divide both sides by 2

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So, we have:

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Hence, the exponential function is:

$y =2\times 2^x$

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Answer:

YES

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4 years ago

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