Answer: D. 21ways.
Step-by-step explanation:
This is based on selection, fixing two '3' numbers into 5numbers to make it 7 numbers can be done in 7C2 ways.
Generally, nCr = n!/(n-r)!r!
7C2 = 7!/(7-2)!2!
=7!/5!2!
=7×6×5!/5!×2!
=7×6/2
=21ways (D)
Answer:
−5c5−15a−25b+10
Step-by-step explanation:
13+2−5−15a−25b−5c5
=13+2+−5+−15a+−25b+−5c5
Combine Like Terms:
=13+2+−5+−15a+−25b+−5c5
=(−5c5)+(−15a)+(−25b)+(13+2+−5)
=−5c5+−15a+−25b+10
Answer:
=−5c5−15a−25b+10
Answer:
Step-by-step explanation:3,339,933
(6,-3) m=-3
formula is y=mx+c
substitute: -3= 3(6)+c
-3=-18+c (takeaway 18 from both sides)
-15=c
Rewrite equation in form y=mx+c
Therefore answer is y=-3x-15
I think this is how u do it from what I can remember :)
To simplify the given equation, you want to combine like terms. Since both terms have x^8, we can add the coefficients and leave the x^8
3x^8-7x^8 (do 3-7)
=-4x^8 so the answer is C
Hope this helps
