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garri49 [273]
3 years ago
14

When seven is subtracted from half of a number, the result is negative three. Find the number

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
5 0

Answer:

8

Step-by-step explanation:

0.5x-7=3

add 7 to both sides

0.5x=4

multiply both sides by 2

x=8

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Answer:

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2) The second one is the vertical line that divides the square in two even sides. Note that this line will also divide both stars at half. The left side will be projected on the right one (and vice versa) trough the symmetry line.

A third line could be thought to be a diagonal between opposite vertices, but notice that the stars projection won't by symmetric in this case.

So, we only have 2 symmetry lines.

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