You first have to distribute the negative to the second pair of parenthesis. So the new equation would be 2n-4-4n+3. Next you combine like terms. So your final answer is -2n-1.
SURE! IM WELLING TO HELP YOU ^_^
Step-by-step explanation:
I'm here to help you to do that Math homework:) Where is it?
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Combinations
nCr
you have n items and how many ways are there to chose r of them
nCr=

remember than n! means n times all numbers before like
3!=3*2*1, 5!=5*4*3*2*1
9 stations, how many ways are there to chose 6 of them
9C6=

=

=

=

=

=
84
84 ways
Answer: Can I see a better pic?
Step-by-step explanation:
Answer:
Δ SHD ≅ Δ STD (By SAS)
Step-by-step explanation:
Given:
SD⊥HT
SH=ST
Prove:
Δ SHD ≅ Δ STD
Computation:
SH=ST (Given)
SD = SD (Common)
∠SHD = ∠SDT (right angle) (SD⊥HT)
So,
Δ SHD ≅ Δ STD (By SAS)