Given: ΔABC with Prove:

Statement Reason
1. given
2. Addition Property of Equality
3. using common denominators
4. AB = AD + DB
CB = CE + EB segment addition
5. Substitution Property of Equality
6. Reflexive Property of Congruence
7. ΔABC ~ ΔDBE SAS similarity criterion
8. ∠BAC ≅ ∠BDE Corresponding angles of similar triangles are congruent.
9. If the corresponding angles formed by two lines cut by a transversal are congruent, then the lines are parallel.
10
What is the missing step in this proof?
A.
∠ABC ≅ ∠DBE
B.
∠BCA ≅ ∠BDE
C.
∠ACB ≅ ∠DEB
D.
∠BDE ≅ ∠ADE
E.
∠CAB ≅ ∠DAC

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

x=-2

step-by-step explanation:

i began by flipping the problem to give me x= on the left (keeps it clearer for me).   so my problem simply became 10x-3=4x-6.  

1)   subtract 4x from the right side, which equals 0.   you do the same to the left of the equal as the right; therefore, subtract 4x from 10x, leaving 6x on the left.

              10x-3=4x-6   :   4x-4x on the right leaves only the -6        

2)             6x-3= 0-6 :    

                6x+3=   -6

3) divide

answer: not good

step-by-step explanation: