Answer:
(-2,0)
Step-by-step explanation:
the difference between the x values are 16 and dividing this by 4 is 4. So if Point A is moved 4 on its x-axis the value is -2.
the difference between the y values is 12 and dividing this by 4 is 3. So if point A is moved on its y-axis the value is 0. the end coordinates are (-2,0)
1. Since we have <span>two sides (AC and AB) and the included angle (60°), we are going to use the law of cosines to find the length of BC:
</span>
<span>
We can conclude that the length of the side BC is </span>
.
2. To find the area of triangle ABC we are going to use Heron's formula:
where
is the area of the triangle
is the semi-perimeter of the triangle
But first, we are going to find the semi-perimeter of our triangle using the formula:
We can infer for our triangle and from our previous calculation that
,
, and
. Lets replace those values to find the semi-perimeter of our triangle:
Finally, we can use Heron's formula to find the area of our triangle:
We can conclude that the area of our triangle is
10.42 square units.
Answer:
well 660
Step-by-step explanation:
well frist we will have to subtract 408 with every other number
408-138=270
270-111=159
this is what he had left
but if it's the other way around 410+140+110=660