Answer:
Step-by-step explanation:
Let base be b, height be h
h = 7+b or we can say that b = h -7
A = 15 cm²
General formula for area of a triangle
A = b · h
Substitute what we know to find the height h
15 = (h-7) · h
15 = h² -7h
0 = h²-7h -15
h = (7 ±√49 + 4·1·15)/2
h = (7 ±√109)/2
h ≈ -1.72 reject this solution because height cannot be negative
h ≈ 8.72 cm
Answer:
c
Step-by-step explanation:
hope it helps
Answer:
EBC
Step-by-step explanation:
two triangles are congruent if:
the sides are the same,
two sides and the included angle are equal,
two angles and the included side are equal
it doesn´t matter if they are rotated or reflected
Answer:
y -1 = 6(x +4)
Step-by-step explanation:
The point-slope form of the equation for a line is ...
y -k = m(x -h)
for a line with slope m through point (h, k). You have m=6, (h, k) = (-4, 1), so your equation is ...
y -1 = 6(x -(-4))
This simplifies to ...
y -1 = 6(x +4)
