Math Answers

1 Find the value of
f(x)=x3+x2−5x+1
f(x)=x3+x2−5x+1
, when x=2
a. 6
b. 4
c. 3
d. 1

A zoo has a circular pool for its seals. The diameter of the pool is 32 feet.How much fence is needed to enclose the pool?

if an additional data value that is far below the rest of the data is added to a data set, then the standard deviation will be increased.

If
B=ab
such that a, b are integers , then B is a set of _____numbers

if they currently have 80 employees and they want to hire 5% more how many computer will they need to buy more

if 〖101〗_(n )=〖22〗_(4 ) find n

if x=1/2-root3 then find the value of x cube - 2x square - 7x - 4

1. If u = f(x,y) be a function of two independent variables x and y, then ∂u/∂y is equal to
a) lim△x→0f(x+△x,y)−f(x,y)△x
b) lim△y→0f(x,y+△y)−f(x,y)△y
c) limy→0f(x,y+△y)−f(x,y)△y
d) lim△y→0f(x+△x,y)−f(x,y)△x
2. Find the total differential of the function
u=x2y−3y

a)2x+(x2−3)dy
b) 2xydx+x2dy
c) 2xydx+(x2−3)dy
d) 2xydx+(x3−2)dy
3. The total differential du of a function u (x, y) = 0 is defined as

a) ∂u∂xdx+∂u∂xdy=0
b) ∂u∂xdy+∂u∂xdy=0
c) ∂u∂xdx+∂u∂ydx=0
d)∂u∂xdx+∂u∂ydy=0

What is the Vertex Formula, and how does it work?

Classify each of the following qualitative variables as ordinal or nominative. Explain
your answers.
Qualitative Variable
Personal computer operating system