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IRINA_888 [86]
3 years ago
10

How does one derive to an answer for different problems... is there a simple rule for 7th grade math?

Mathematics
1 answer:
ruslelena [56]3 years ago
5 0
Honestly, there isn't a set rule. The rules differ for every topic of a subject within a certain grade. For example, the Pythagorean Theorem doesn't pertain to solving for the polynomial.  
I hope this helps! :)
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C is the midpoint of line segment AB Find the value of x, if line segment AB = 5x and line segment AC = 20.
Softa [21]
D.8

A and C are out because they would get you ether lower or equal to 20, which is equal to AC and your trying to find X in AB which is so posed to be the what equals AC+BC.
AB=AC+BC
5x=20+BC
5(8)=20+BC
40=20+BC
40=20+20

AC equals 20. AB will have to equal AC+ CB. If you put in A.4 in AB 5X you will get twenty and that not what you want. You want to get a number that will get you the an answer greater to AC. So 5(8)=40. 
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3 years ago
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Rainbow [258]
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3 years ago
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makkiz [27]

Answer:

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Step-by-step explanation:

7 0
3 years ago
The point (-7,4) is reflected over the line x=-3. Then the resulting point is reflected over the line y=x. Where is the point lo
Ne4ueva [31]

Answer:

  (4, 1)

Step-by-step explanation:

Since the first reflection is over the vertical line x=-3, the y-coordinate remains the same. The x-coordinate of A' will make the point (-3, 4) on the line of reflection be the midpoint between A and A':

  (-3, 4) = (A +A')/2

  2(-3, 4) -A = A' = (-6-(-7), 8 -4) = (1, 4)

The reflection over the line y=x simply interchanges the two coordinate values:

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3 0
3 years ago
PLEASE HELP ANGLE OF A TRIANGLE
Vikki [24]

Answer:

59°

Step-by-step explanation:

The angles of a triangle equal 180°.

Also the angle of a straight line is 180°.

So you first find the missing bottom angle by taking 180-147 to equal 33.

Then you take 33+88+x=180

solve for x by subtracting 88 and 33 from 180 to equal 59.

8 0
3 years ago
Read 2 more answers
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