Answer:
Option B.) –6x3 + x2 – √5
Step-by-step explanation:
A is wrong because, polynomial expressions cannot have a variable as a denominator.
C is wrong because there is no constant.
D is wrong because, polynomial expressions cannot have a variable as a denominator.
Hope that helps! :-)
a quarter of a circle is 19.625
so the area of full circle is 19.625 x 4 = 78.5 sq. km
area of a circle is PI x r^2
78.5 = 3.14 x r^2
78.5/3.14 = 25 = r^2
r = sqrt(25) = 5
radius is 5 km
circumference ( perimeter) = 2 x PI x r
2 x 3.14 x 5 = 31.4 km
perimeter is 31.4 km
Answer:
-2 1/4z +1/4
Step-by-step explanation:
3/4 - 4z +5/4 z- 1/2 + 1/2 z
Put like terms near each other
3/4- 1/2 - 4z +5/4 z+ 1/2 z
We need to get common denominators to combine
First the constant terms
3/4 - 1/2*2/2
3/4 - 2/4 = 1/4
Then the variable terms
-4z *4/4 +5/4z + 1/2z *2/2
-16z/4 + 5/4z +2/4z
-9/4z
Changing from an improper fraction to a mixed number
-2 1/4 z
-2 1/4z +1/4
You have to use implicit derivative
dy / dx = y'
xy^3+y=3x
y^3 + 3xy^2 y' + y' = 3
[3xy^2 + 1) y'= 3 - y^3
3 - y^3
y' = ----------------- <-----------answer
3xy^2 + 1
Answer:
I believe the answer is D.