martin spent 6 hours on homework every day . what percentage of the day did martin spend doing homework ?
1 answer:
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Answer:
Step-by-step explanation:
The quadrilateral ABCD consists of two triangles. By adding the area of the two triangles, we get the area of the entire quadrilateral.
Vertices A, B, and C form a right triangle with legs ,
, and
. The two legs, 3 and 4, represent the triangle's height and base, respectively.
The area of a triangle with base and height
is given by
. Therefore, the area of this right triangle is:
The other triangle is a bit trickier. Triangle is an isosceles triangles with sides 5, 5, and 4. To find its area, we can use Heron's Formula, given by:
, where
,
, and
are three sides of the triangle and
is the semi-perimeter (
).
The semi-perimeter, , is:
Therefore, the area of the isosceles triangle is:
Thus, the area of the quadrilateral is:
You factor the expression first leaving you with 
Then you would cancel out 3xy as because there is exactly one on each side. This, in turn, would leave you with z - 1
Then you would cancel out 3xy as because there is exactly one on each side. This, in turn, would leave you with z - 1