Prove this plz I really need it

See below.

Step-by-step explanation:

1) Statement: BM is a median of TK and BM is an altitude of ΔKBT

Reason: Given

2) M is the midpoint of TK

Reason: Definition of median

3) TM ≅ MK

Reason: Definition of midpoint

4) BM⊥TK

Reason: Definition of altitude

5) ∠BMT and ∠BMK are right angles

Reason: Definition of ⊥

6) ∠BMT ≅ ∠BMK

Reason: Right angles are ≅

7) BM ≅ BM

Reason: Reflective property of ≅

8) ΔBMT ≅ ΔBMK

Reason: SAS Congruent Triangles

9) BT ≅ BK

Reason: CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

Hope that helped! :) Proofs are a killer.

A.  The difference of the two means is significant, so the null hypothesis must be rejected.

B.  The difference of the two means is significant, so the null hypothesis must be accepted.

C.  THE DIFFERENCE OF THE TWO MEANS IS NOT SIGNIFICANT, SO THE NULL HYPOTHESIS MUST BE REJECTED.

D.  The difference of the two means is not significant, so the null hypothesis must be accepted.