x^2-xy+3y^2=15 x-y=2
Make the equation X:
x = y + 2
Plug in and Solve:
(y+2)^2 - y(y+2) + 3(y+2)^2 = 15
y = (√46) - 7/3
y = - 7 + (√46)/3
Answer:
just use the pie sign in your calculator
Answer:
4/12 + 9/12 is 13/12 ( the mix number is 1 1/12)
Step-by-step explanation:
Answer:
AD ≅ CD.
Step-by-step explanation:
Statement : consider triangles ADB and DBC.
1) AB = CD
2) ∠ABD = ∠DBC
3) DB = DB
4) ⇒ ΔADB and ΔDBC are congruent triangles.
5) AD = DC.
Reasons ;
1) given, AB = CB
2) given, DB bisects ∠ ABC
3) common side of both triangles
4) as two sides and one angle are equal in both triangles
5) congruent triangles
