Answer:
x=-3
y=6
Step-by-step explanation:
5x+2y=-3 3x+3y=9
3x=9-3y
x=3-y
5(3-y)+2y=-3
15-5y+2y=-3
18=3y
6=y
x=3-y
x=3-6
x=-3
The variable(s) in each triangle below 9, 12 and 16.
<h3>What is Area of Triangle?</h3>
The basic formula to find the area of a triangle is, area of triangle = 1/2 (b × h); where 'b' is the base and 'h' is the height of the triangle.
Let the base of the triangle be 15.
So, the area is:
Area= 1/2*b*h
= 1/2*15*20
= 150.
Let the base of the triangle be 25.
So, the area is:
Area= 1/2*b*h
150= 1/2*25*h
= 300/25
h =12
Now, using Pythagoras Theorem
15²= h²+x²
15²=12²+x²
225-144= x²
x²= 81
x=±9
Now, x+y=25
y=16
Thus , values are 9,12 and 16.
Learn more about Area of Triangle here:
brainly.com/question/27683633
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7*(60+8) = 420+56 = 476
(i am not sure)
Step-by-step explanation:
I might be able to help what exactly is the question?