05/30/15

f(x) = -9x2 + 8x + 5. what is the aproximate value of x if f(x)=0
  a. {1.31, –0.42}b. {-9, 8} c. {–0.89, –0.56} d. {–1.80, 1.60}
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05/28/15

Algebra 2 help please??
Consider the set x= { #, $, @, ^, *}1. Find the numbers of subsets there are for set X.2. Find the number of 4- element subset of set X.I am so confused, anything helps, thank you!!!
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05/28/15

x^2(3x^2+k/x)^8 The constant is 16128. Find k
 This is binomial expansion. I need to find k. The constant is 16128.   x2(3x2+k/x)8
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05/28/15

Consider the expansion of (x+3)^10. Find the term containing x^3.
please help. Calculus!  
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05/28/15

Let f(x)=e^2x. The line L is the tangent to the curve of f at (1,e^2). Find the equation of L in the form y=ax+b.
please help. Calculus!  
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05/28/15

After hammering away at this problem, I arrived at the right answer according to my online homework program but it still isn't very clear.
I have the correct answer for a but I'm still hazy on how I got there. For part b, I'm tol   A massive black hole is believed to exist at the center of our galaxy (and most other spiral... more
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05/28/15

Hello has anyone heard of the "what's missing" method?
Im adding and Subtracting unlike denominators and my teacher keeps talking about the whats missing method? If anyone has heard of this please let me know and explain it to me asap!!
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05/28/15

Given the function complete the following
 f(x)={x+3   if x<-2, |x-1|-3  if -2≤x<3,   -1  if x>3   a. Graph the function.   Based on the graph, find the following values:   b. limx→-2- f(x) c. limx→-2+ f(x) d. limx→-2... more
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05/27/15

Write the following log in terms of log 3 log 5 and/or log 2
1) log 5/12  Write the log equations for each then solve using logs 2) x=5 square root (72.43)* 3 square root (.00035)^2 all divided by six square root 5.84 3) 2.35^x=342.7
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05/27/15

12x + 8 / 9x^2 - 4 and 12x^2-3x/ 4x^3 + 7x^2-2x and 2x^2+13x+20 /16x^2+13x-5 *9x-1/3x+1
Simplify the expression and state all restrictions. Please show work 
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05/27/15

Solve each equation on the interval
0 less than or equal to theta less than or equal to 2pi cos(theta)=1/2 cos(theta)=-square root 3/2
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05/27/15

General solution of differential equation?
What is the general solution of (2+x)y'=3y? I've gotten to e^((1/3)lny) = e^(ln(2+x)+c) , but I don't know how to simplify it further.
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05/27/15

at what speed must alex travel to make her trip an average speed of 50 mph
alex already traveled 2 miles at 30 mph.  if she travels two more moles, how fast will she have to be going to have a total average speed of 50 mph 
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05/26/15

how much will the total cost of wire be at a price of $5.05 per foot?
a highschool  cellular is building a cell tower on level ground. after the antenna was assembled the job foreman realizes that guy wires are needed to keep the tower both perpendicular and stable... more
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05/26/15

child got allowance of 1 cent for each year of age, since age 6, and is now 50 years old, how much would that be worth today considering inflation?
Considering inflation, how would I calculate what he would be entitled to in present time? As a weekly allowance.  
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05/25/15

If p,q are the roots of Ax^2-bx+c=0. Then find the value of p+q
if p,q are the rots of ax2-bx+c=0 . then find the value of p+q .  
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05/25/15

What function gives the time (t) it takes the rider to finish the race in terms of (s)?
In a bike race, a rider covers a 5-mi flat stretch of road at a speed of (s) mi/h. She then doubles her speed down a hill 1 mi long. Finally, she reduces her downhill speed by 12 mi/h as she rides... more
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05/25/15

How to factor polynomials
1.) 125x^3-8 2.) x^2-9x-22 3.) 2x^2-5x+2 4.) x^3-x^2+5x-5 5.) 2x^3-3x^2+4x-6    
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05/25/15

a shipping box has a base eara of 4x^2 + 52 +168 and a height of x/4x +28. what is the volume of the box?
It's algebra.
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05/25/15

Solve. Check for inadmissible roots.
5x = 7-12(5-x)
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05/25/15

Draw a circle and point p in it. Measure to calculate the power of P.
a.) Are there other locations for P within the same circle that have the same power? Find a few and explain your reasoning. b.)Find the locations of all points within your circle that have the... more
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05/25/15

What is the angle of depression in the airplane must use for its descent?
The plane is flying at 5 miles above the ground. The horizontal distance from the airplane to the start of the runway is 19 miles.
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05/25/15

How to write a formula for a logging company that cuts down 10% of acres per year and replants 10,000 acres each year
starting acres of 200,000
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05/25/15

Raman has to score a minimum 40% marks for passing examination. he gets 178 marks and fails by22 marks.find maximum marks?
this is a percentage related questions of commercial maths
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05/25/15

probability
a professor of economics has 2 graduate assistants helping him. the probability that the older of two assistants will be absent on any given day is 0.08, the younger one 0.05, the probability that... more
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