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Sergeeva-Olga [200]
2 years ago
5

Find the value ............​

Mathematics
2 answers:
charle [14.2K]2 years ago
8 0

\boxed{\large{\bold{\blue{ANSWER~:) }}}}

  • 2-3a+7=8a+3-a

  • 9-3a=7a+3

  • 7a+3a=9-3

  • 10a=6

  • a=6/10

  • a=3/5
Fed [463]2 years ago
3 0

Step-by-step explanation:

\tt{2-3a+7 =8a+3-a } ⠀

\tt{8a-a+3a=2+7-3  } ⠀

\tt{11a-a=9-3  } ⠀

\tt{10a=6  } ⠀

\tt{ a=\dfrac{6}{10} } ⠀

\tt{a=\dfrac{3}{5}  } ⠀

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Find the slope of the line passing through the points of (3,-5) and (-9,-6)
slavikrds [6]

Answer:

1

m = ---

12

Step-by-step explanation:

The formula is y2-y1

---------

x2-x1

(x1,y1) (x2,y2)

(3,-5) (-9,-6)

You get the 2 Y's and subtract them

Do the same with the X's

Y's above , X's below

(y2- y1)

⬇

-6-(-5) -1 1

--------- = ---- = ---- = m

-9-(3) -12 12

⬆

(×2- x1)

This equation is backwards, thats why it was harder to understand. (-9,-6) is farther left and below point (3,-5), making it the REAL first point in the equation.

5 0
3 years ago
HELP ILL GIVE BRAINLIST
Serggg [28]

Answer:

$4.25

Step-by-step explanation:

Easy price is 85 so

Divide 85 by 100

0.85

then multiply by 5

0.85*5=4.25

Brainliest please and you're welcome

5 0
3 years ago
Write the equation of line in slope-intercept form. Line parallel to y=−2x+3 that passes through the point (−100,−100)
GrogVix [38]

Remark

The line you want is parallel to y = - 2x + 3

That means it has the same slope as the given line.  The given line has a slope of  -2

y = -2x + b is what you have so far. Now you have to use the point to get b

y = - 100

x = - 100

Solve for b

-100 = -2(-100) + b

-100 = 200 + b       Notice the sign change. Two minus's make a plus. Subtract 200 from both sides.

- 100 - 200 = b

- 300 = b

Answer

y = - 2x - 100

3 0
3 years ago
Read 2 more answers
What is the value of the y-intercept of the line 7x-4y=20?<br> 7/4<br> 5<br> -5
USPshnik [31]

Answer:

-5

Step-by-step explanation:

Once you get y alone the equation will look like this y=-7/4x-5.

The slope intercept form dictates that y=mx+b, with b being the y-intercept, so -5 is b, therefore the y intercept.

3 0
3 years ago
Find an equation of the line given one point and the slope. (–10, –5);
allochka39001 [22]
You forgot to provide the slope but here is how you do this 

the slope 5 = (y2 - y) / (x2 - x) but we know that (x2, y2) = (-10, -5)
=> (-5 - y) / (-10 - x) = 5 --- multiply both sides by (-10 - x)
=> (-5 - y) = 5 (-10 - x) 
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=>  -y = (-50 + 5) - (5)x --- multiply both sides -1 
=> y = 5x + 45  --- this will be your equation. 
7 0
3 years ago
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