Enter your answer as a decimal. Round ONLY your final answer to the nearest tenth.
2 answers:
In order to solve this this problem, you first need to know the formula of a triangle which is b×h/2 (First measure the bottom of the triangle and find how long that is and then measure the height of the triangle and do the same thing. Then multiply both of those measurements together and with your answer divide it by two.) And of course your answer should be a decimal, so if you need help with entering your answer as a decimal or rounding to the nearest tenth or any other problem that I can hopefully answer, you can send me a message on brainy. Good luck!
(I put a picture of an example of how to find the area of a triangle) Click on the image to enlarge just in case you can not see the whole picture.
(I put a picture of an example of how to find the area of a triangle) Click on the image to enlarge just in case you can not see the whole picture.
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Step-by-step explanation:
- 1
vector AB(3-(-6); 5-7)
vector AB(9;-2)
AB= =
- 2
M is the midpoint of AB
we have B(-5;10) and M(1;7)
let A(x;y)
(x-5)/2 = 1 ⇒ x-5 = 2⇒ x = 7
(10=y)/2 = 7⇒ 10+y = 14 ⇒y= 4
so : A(7;4)
- 3
the center of the circle is the midponit of the line joining both ends of the diameter
let A(x;y) be the other end
(-2+x)/2 = 2 ⇒ -2+x = 4⇒ x= 6
(5=y) = -1 ⇒ 5+y = -2 ⇒ y= -7
so the coordinates of the other end are (6; -7)
- 4
A,B and C are collinear such as AB=BC so b is the midpoint of AC
(-5+1)/2 = y ⇒ y = -4/2 ⇒ y = -2
((-3=x)/2 = 7 ⇒ -3+x = 14 ⇒ x = 17
so x= 17 and y = -2