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maxonik [38]
4 years ago
12

I need help solving this proportion!! 3/x-1 = 2/x+4

Mathematics
1 answer:
Gelneren [198K]4 years ago
3 0
1. Move 2/x to the left side of proportion by changing sign before it:
3/x - 1 - 2/x = 4

2. Move 1 to the right side of proportion and change it's sign as well:
3/x - 2/x = 4 + 1

3. Sum numerators in the left side of proportion since they have common denominator (x) abd also sum the numbers in the right side too:
(3-2)/x = 5

4. Calculate numerator in the left side of proportion:
1/x = 5

5. Move 1 to the right side of proportion by dividing that side by it:
x = 1/5

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stepladder [879]

the probability is 7/15

Step-by-step explanation:

because there are 7 girls and 8 boys

6 0
3 years ago
Please answer the question because I don’t understand can you answer please!,,
Minchanka [31]

Answer:y= 2x+7


Step-by-step explanation:

They are all pretty much want you to create the equation so the formula they want is y=mx+b format.


First problem(1,9) slope 2


Y=mx +b


Where y is 9,x is 1 and slope (m) is 2.


Now solve for b using equation


Y=mx +b

9= 2(1)+b

9=2+b

9-2=b

7=b


Now you can create equation


Y= 2x+7


Prob.4


(3,-6) and (-1,2)


First find slope


M= y2-y1/x2-x1

M= 2-(-6)/-1-3

M = 8/-4


M= -2


Your slope "m" is -2


Now do as problem 1 get one of the points and your slope to get equation .


(3,-6) slope -2

Y=mx+b

-6= -2(3)+b

-6= -6+b

-6+6=b

0=b


Y= -2x


Problem 7


(5,13) (10,14)


You solve this one as problem 4 same steps that I did above .


Problem 8 is also the same as steps in problem 4


( 2,160) and ( 2.75,220)


I hope this helps you

5 0
4 years ago
How do I work this problem out..23÷560
attashe74 [19]
Divide 560 by 23, 23 goes into 560 24.347 times.
5 0
4 years ago
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Answer:

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3 years ago
At which angle will the hexagon rotate onto itself?<br> 60<br> 90°<br> 120°<br> 180°
-BARSIC- [3]

Answer:

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