3 years ago

In DEF, C is the centroid if DM=45 , find DC and CM DC= ? Units

Mathematics

1 answer:

IgorC [24]3 years ago

7 0

Answer:

DC=30

CM=15

Step-by-step explanation:

Given

Triangle DEF with C centroid

DM=45 (length of median)

centroid divides median in the ratio 2:1(larger side at vertex)

⇒

DC $=\frac{2}{3} \times DM=\frac{2}{3} \times 45= 2\times 15=30$

⇒DC=30

DC+ CM=DM

30+CM=45

⇒CM=15

You might be interested in

On a straight road, a car speeds up at a constant rate from rest to 20 m/s over a 5 second interval and a truck slows at a const

KIM [24]

To determine the total distance traveled by an object in constant speed, just multiply the speed by the time. So, for the car, the total distance traveled is,
distance by car = (20 m/s)(5s) = 100 m
For decelerating object, the distance traveled is,
distance = Vt - (at^2)/2
For the truck,
distance by truck = (20 m/s)(10s) - (2m/s^2)((10s)^2)/2 = 100 m

Relatively, both have traveled the same distance.

7 0

3 years ago

movie theater sold 5400 tickets yesterday of those, 3240 tickets were for Star Wars. what was the percentage it sold yesterday w

Gnesinka [82]

3240 star wars tickets divided into 5400 total tickets = .6 × 100 = 60%
May the Force be with you.

8 0

3 years ago

Selene's checking account balance was -$33, and then she withdrew $42 more. What is her checking account balance after the withd

Rainbow [258]

Answer:

-75

Step-by-step explanation: