Answer:
3 > -7
Step-by-step explanation:
-9 < 21
/-3 /-3
------------
3 < -7
Now, whenever you divide or multiply by a negative, you will change the inequality sign.
So, 3 < -7 becomes 3 > -7
Answer:
Step-by-step explanation:
X = 2V6 + 4 or x =-2V6 + 4
Answer:
Therefore,
l(AB) = 15 units
Step-by-step explanation:
Given:
AD = DC
angle DBA = angle DBC = 90°
AB = 5x
CB = 4x - 3
To Find:
AB = ?
Solution:
In Δ ABD and Δ CBD
AD ≅ DC ……….{Given}
∠ DBA ≅ ∠ DBC …………..{measure of each angle is 90° given}
DB ≅ DB ....……….{ Reflexive property}
Δ ABD ≅ Δ CBD ..........….{By Hypotenuse Leg Theorem}
∴ AB ≅ CB ..............{corresponding sides of congruent triangles}
on substituting the values we get

Now we require AB

Therefore,
l(AB) = 15 units