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jeka94
3 years ago
7

135 is 30% of what number

Mathematics
1 answer:
V125BC [204]3 years ago
4 0
So,

135 is 30% of x

135 = 30% of x

135 = 30% * x

135 = 0.3x

135= \frac{3}{10}x

Multiply both sides by the reciprocal.

135* \frac{10}{3} =x

\frac{135*10}{3} =x

\frac{45*10}{1}\ or\ 450 =x

135 is 30% of 450.
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In a square all 4 sides are equal, so when you cut it along the diagonal to make a triangle, both the base and the height of the triangle would be the same.


The area of a triangle is found by the formula 1/2 x base x height

Since the base and height are the same the formula becomes Area = 1/2 x S^2 ( where S is the length of a side).

The area is given as 0.72 square units.

Now you have 0.72 = 1/2 x S^2

First multiply both sides by 2:

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To find S, take the square root of both sides:

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S = 1.2

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4 years ago
find the x-intercepts of the parabola with vertex(6,27) and y-intercept (0,-81). write answer in form (x1,y1)(x2,y2). if necessa
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The x-intercepts are ( 3, 0 ) and ( 9, 0 ).
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