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blagie [28]
2 years ago
7

The area of a parallelogram can be found by the

Mathematics
1 answer:
Daniel [21]2 years ago
4 0

I think that it might be 7.87 sorry if i am wrong

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16m - (5 + 9m) which one is it
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a 76 inch pipe is cut into two pieces One piece is three times the length of the other find the lengh of the shorter piece?
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What is the probability that both spinners land on red or orange?
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What is the value of y?<br> 72°<br> A. 1080<br> B. 540<br> C. 36°<br> D. 720
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Which is not an equation of the line going through (6, 7) and (2, –1)?
garri49 [273]
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you basically find the equation of the line first and eliminate the wrong answers...

Strategy:  before u do any of this, label your coordinates as (X1,Y1) and (X2,Y2) and u can choose any of ur points to be as x1 or x2 or y1 or y1...
basically, I'll choose (6,7) as (x1,y1) and (2,-1) as (x2,y2). SO,

First you have to  find the gradient (m) of the line.
  you do this by using the formula m = Y2-Y1 / X2-X1 (where '/' is division sign) ....
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NOW.
use the formula Y-Y1=m(x-x1) to find the equation of the line.Again u can use any Y1 and X1 here but remember your m is 2

replace the digits and solve...Hopefully you'll get sth like this if you use the points (6,7):
Y-7 = 2(x-6) ....
y=2x-12+7...
Y=2x-5! <<<< this is your straight line equation!
Now all u gotta do is rearrange all your options into y = mx+c.
D. is incorrect as it gives us y=2x+5 and not y = 2x-5 unlike the others 
 

Hope you get it!




7 0
3 years ago
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