Figure CDEF is a parallelogram.

Mathematics

2 answers:

MissTica3 years ago

8 0

Answer:

n=10

CF=59

FE=42

the rest are false

Step-by-step explanation:

Salsk061 [2.6K]3 years ago

3 0

We see that CF and DE are parallel to each other, which means that they had the same length with each other, so:
6n-1=5n+9
Subtract 5n for both side
6n-1-5n=5n+9-5n
n-1=9
Add 1 for both side
n-1+1=9+1
n=10
CF=
6n-1
=6(10)-1
=60-1
=59
DE=
5n+9
=5(10)+9
=50+9
=59
CD/FE:
4n+2
=4(10)+2
=42
True/False:
n=10 True
n=7 False
CF=59 True
FE=42 True
CD=30 False. As a result, n=10;CF=59; and FE=42 is your final answer. Hope it help!

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