pdas5085

(((3)/(k+3))-((1)/(k-9)))/(((3)/(k-9)+((2)/(k+2)))

1.      

Given the total utility function (Tu)=150x+40x²-x³,then drive marginal utility function and find the value of x at which total utility is maximum

What do you mean completing the square?

What is the mass of 6.3 mol of CO?

What is 2 x 2?

f(x) = (7ax + 3)(5bx - 8);

Rules for Differentiating Algebraic Forms:

What is 10 x 10?

y is a function of x, and the function definition is given as: y = f(x) = 1/(1 + x2). Find the output values of the function for x = 0, x = −1, and x = √2.

Differentiate x tan x.

What does the quadratic formula do?

 Solve ?

Which zero pair could be added to the function x2+8x+6 so that the function can be written in vertex form?

(a)16,-16

(b)8,-8

(c)9,-9

(d)2,-2.

Solve for 8x - 3 = 6x - 9

1) Factor: k2 - 4

a. (k-2) (k-2)
b. (k2 + 4) (k2 - 4)
c. (k+2) (k-2)
d. (k+4)(k-4)
e. None of the above

2) Solve for x: (5x - 10)/(x - 2) = (3x)/(x + 1)

a. No Solution
b. -5/2
c. -1/2
d. 8
e. None of the above

3) Solve for x
x2 + 10x + 1 = 0

a.7
b.-5 ± v10
c.7 or -17
d.-5 ± 2v6

4) Solve for y:
x = (3 + y)2

A.-3 + v18 + x or -3 - v18 + x
B.-3 + vx or -3 - vx
C. -3 or 3
d. -3
e. None of the above

5) Find the real number restrictions on x in the expression

x2 / (x2 - 14x + 49)

A.0 and 7
b.7 and -7
c.7
d. none
e. None of the above

A company finds that its profits can be modelled with the formula P= 67.2x - 4.2x2, where P is the profit in millions of dollars and xis the production (in thousands of units). At what profit level isthe model valid? Hint: Look at the Axis of Symmetry andVertex

A.P = $268.8 million
B.P = $4,515.8 million
C.P = $504 million
D.P = $672 million
E.None of the above


7) Solve for x: x2 - 3x + 2 = 0


A.{-2, -1}
B.{1, 2}
C.{-1, 2}
D.{-2, 1}
E.None of the above



8) Solve for x: x + 3 = 4(3x - 1)

A.7/11
B.5/11
C.-1/11
D.4/11
E.None of the above

9) Simplify: (7ab) / (a2 - b2) - (a - b)/(a + b)

A.(-a2 + 5ab - b2 ) / (a + b)(a - b)
B.(a2 + 5ab - b2 ) / (a + b)(a - b)
C.(a2 + 9ab + b2 ) / (a + b)(a - b)
D.(-a2 + 9ab - b2 ) / (a + b)(a - b)
E. None of the above

10) Solve for x (3/x) + 9/(2x) = 1
A.15/2
B.4
C.1/4
D. No solution
e. None of the above

What is the weight of an kg crate?

Find f. (x>0)
f ''(x) = x^-2
x > 0
f(1) = 0
f(4) =0

Inequality statement:  2|5 - x| > 16

Inequality Statement: -32x + 7 +1 -38

What is the greatest common factor of 8x and 40?

What is the greatest common factor of and ? 

What is the greatest common factor of  ?

4.  Factor the following as a difference of squares.

a) x^2−25

b) x^2−169

c) 81 x^2−100

d) 64−121x^2

3. Factor the following trinomials (use the method of sum and product.)

a) x^2+7x+10

b) x^2+2x+1

c) x^2−3 x−18

d) x^2−4 x+3

e) x^2+5 x−14

f) x^2−13 x+36

g) x^2+6 x−27

h) x^2−10 x+25

i) −2 x^2 + 8 x+10