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Marizza181 [45]

4 years ago

6

Two-fifths of a number is decreased by three. Find the value of the expression if the number is twenty-five.

2 answers:

sweet [91]4 years ago

7 0

2/5x -3

If we plug in 25, we get:

2/5(25) - 3 =

50/5 - 3 =

10 - 3

7

prohojiy [21]4 years ago

6 0

We can make an equation out of this by defining this mystery number as x. We can also use the word "of", by realizing that the word means multiplication.
Therefore, we have:
2/5x -3
If we plug in 25, we get:
2/5(25) - 3 =
50/5 - 3 =
10 - 3 =
7
Hopefully this helps!

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) Find the coordinates of the point A' which is the symmetric point

soldier1979 [14.2K]

Let, coordinate of point A' is (x,y).

Since, A' is the symmetric point A(3, 2) with respect to the line 2x + y - 12 = 0.

So, slope of line containing A and A' will be perpendicular to the line 2x + y - 12 = 0 and also their center lies in the line too.

Now, their center is given by :

$C( \dfrac{x+3}{2}, \dfrac{y+2}{2})$

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Also, C satisfy given line :

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