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e-lub [12.9K]
3 years ago
13

What does the double bracket mean in this equation: f(x)=[[x]]

Mathematics
1 answer:
elena-s [515]3 years ago
4 0
[[x]] means that the integer should be rounded down to the greatest integer that is of the same value as x or is lower than x.
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What is the area of the right triangle shown?
prisoha [69]
The 30:60:90 proportion is 1:sqrt 3: 2

So,

x = 10/2
x = 5

y = 10/sqrt 3

Finding the area:

1/2 * 5 * 10/sqrt 3
25/sqrt 3

Hope this helps!
3 0
3 years ago
Factor the polynomial:<br> ab −3b+b^2−3a
Pavlova-9 [17]

ab(b-3)


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a(b-3) b(b-3)

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8 0
3 years ago
Write the equation of the line that is perpendicular to the line y = 2x + 2 and passes through the point (6, 3).
weeeeeb [17]

Answer:

\[y = (-1/2) * x + 6\]

Step-by-step explanation:

Equation of the given line: y=2x+2

Hence the slope of the line is given by 2

Any line which is perpendicular to the given line will have a slope m such that m*2 = -1

Or, \[m = \frac{-1}{2}\]

Only options 2 and 3 satisfy this condition.

The line is also supposed to pass through the point (6,3).

Substituting these values in the option 2:

\[3 = (-1/2) * 6 + 3\]

Or, \[ 3 =0 \] which is false . Hence option 2 is not valid.

Now substituting (6,3) in option 3:

\[3 = (-1/2) * 6 + 6\]

Or, \[ 3 =3 \] which is true . Hence option 3 is the required equation of the line.

5 0
3 years ago
Isabel needs to cut a square piece of wood with the area of 70 in.² approximate the size of the square and round to the nearest
Alla [95]

Answer:  8.4 inch

Step-by-step explanation:

To find the size of the square, just find the square root of 70. Because the area of a square is the side length squared

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5 0
3 years ago
Determine the intercepts of the line <br> Y ——-,——-<br> X——-,——-
77julia77 [94]

Answer:

(-8,0), (0,-6)

Step-by-step explanation:

3 0
2 years ago
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