Answer:
Proven
Step-by-step explanation:
Let ABC be a triangle and D, E and F are midpoints of BC, CA and AB.
The sum of two sides of a triangle is greater than twice the median bisecting the third side,
Hence in ΔABD, AD is a median
⇒ AB + AC > 2(AD)
Hence, we get
BC + AC > 2 (CF
)
BC + AB > 2 (BE)
On adding the above inequalities, we get
(AB + AC) + (BC + AC) + (BC + AB )> 2 (AD) + 2 (CD) + 2 (BE
)
2(AB + BC + AC) > 2(AD + BE + CF)
AB + BC + AC > AD + BE + CF - Proven
* Sorry I don't have any attachments, use your imagination!
Answer:
$1,400
Step-by-step explanation:
275×4=1,100
2,500-1,100 = 1,400
1, 1.5, 2, 2.5, 3, 3.5
Y si no se cuenta el uno:
1.5, 2, 2.5, 3, 3.5, 4.
Answer:
1 1
------ + -------
r^7 s^12
Step-by-step explanation:
r^(-7) + s^(-12) can be re-written as
1 1
------ + ------- by putting to use the rule:
r^7 s^12
1
x^(-a) = ----------
x^a
Answer:
7.5 is the blank
Step-by-step explanation:
1 in = 60 m
? in 450 m
450÷60 = ? in
7.5 in = ?
Therefore the length of the tunnel on the map is 7.5 inches
