This is the answer for both number 9 and number 11.
Good luck
Good luck
Simone used this formula to find the height of a triangle.
2 answers:
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A=1/2h(b+c)
times both sides by 2/1
2A=h(b+c)
divide both sides by h
=b+c
minus c from both sides
-c=b
times both sides by 2/1
2A=h(b+c)
divide both sides by h
minus c from both sides
Answer:
(1.25, - 5 )
Step-by-step explanation:
Given the 2 equations
- 4x + 3y = - 20 → (1)
4x + 2y = - 5 → (2)
Adding the 2 equations term by term will eliminate the x- term
5y = - 25 ( divide both sides by 5 )
y = - 5
Substitute y = - 5 into either of the 2 equations and solve for x
Substituting into (2)
4x + 2(- 5) = - 5, that is
4x - 10 = - 5 ( add 10 to both sides )
4x = 5 ( divide both sides by 4 )
x = = 1.25
Solution is (1.25, - 5 )