1/7-9/7n+6/7
1-9/7n
That is the extended form and is simplified
Hope it helps! :)
Hi,
1) ax²+2bx+c=0 have real roots then (2b)²-4ac>=0 ==> 4b²>=4ac ==> b²>=ac
2) bx²-2√(ac)x+b=0 have real roots then
(-2√(ac))²-4b²>=0==> 4ac>=4b²==> ac>=b²
So b²>=ac>=b²==> b²=ac
To find your answer, you would find 25% of 52. To find 25% of 52, you would multiply 52x.25.
52x.25=13
Now you need to subtract 52-13. 52-13 is 39. The original amount is 39 companies.
Answer:
Perimeter = 18
Step-by-step explanation:
P=2(l+w)=2·(7+2)=18cm
