1(3694820-1223400=2471420. Ans. B
2)4*40*0.05=8 Ans. B
3)Ans. D
4)2*3*2*3=6*6=36 Ans. 2,2,3,3
5)4*(10)/2=40/2=20 Ans 20
6) Ans. Distributive Property
7)Ans. 5
8)Ans. 60° angle, because 90-30=60
Those are mixed number
<span>3 1/3 + 1 1/4
10/3+5/4
take LCM
40+15/12
55/12=4.5833 or u can write in mixed form 4 7/12</span>
<u>Correct </u><u>Inputs </u><u>:-</u>
In ΔABC right angled at A, D and E are points on BC, C such that BD = CD and AD ⊥ BC

Let us know about definition of altitude first. The altitude of a triangle is the perpendicular line segment drawn from the vertex to the opposite side of the triangle.
Median is the line segment from a vertex to the midpoint of the opposite side.
<u>Let us Check all options one by one </u>
- CD is line segment which starts from vertex C but don't falls on opposite side AB thus it is not an altitude.❌
- BA is line segment which starts from vertex B and falls perpendicularly on opposite sides AC and is thus an altitude.✔️
- AD is line segment which starts from vertex A and falls perpendicularly on opposite side BC and is thus an altitude.✔️
- AE is a line segment which starts from vertex A but doesn't falls perpendicularly on opposite side BC and is thus not an altitude.❌
- AD falls on BC with D as mid point because BD = CD and is thus a median. ✔️