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x^4-16x^3+90x^2-111x+173 When I put this equation into the graphing calculator, I get a parabola. I'm not sure how to find the zeros. Can you help?

16 years ago

Please help. Can you tell me how to find 1. what is the weight of 1 mole of pure sodium (Na)? 2. How many molecules of Na are in 1 mole of Na?

16 years ago

I have some questions that relate to table 2.1 which lists the chemical elements that occur naturally in the human body. Similar percentages of these elements are found in most living organisms. a. In what abiotic (non-life) chemical forms are these eleme...

16 years ago

Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90x^2-111x+173 Once I know it is multiplied out right then I can continue. Thanks

16 years ago

Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90^2-211x+173 I then need to put it in the graphing calc and see what the roots are.

16 years ago

A farmer with 8000 meters of fencing wants to enclose a rectangular plot that borders on a river. If the farmer does not fence the side along the river, what is the largest area that can be enclosed? Does that mean I have to consider it a triangle?

16 years ago

Shelby can paint a room in 4 hours. Zoe can paint the same room in 7 hours. How long will it take them to paint the room if they work together? If they start 9:30a.m., and want to see a movie that is playing 45 minutes from their house and starting 12:00...

16 years ago

Hello, Having trouble with this one... Solve the inequality: (2x-3)(4x)+x^2=>(3x+4)^2 I did 2x-3*4x 9x^2-12x on the left side on the right side: 9x^2+24x+16 I substracted everything on the right side over to the left and made it => zero 9x^2-12x-9x^2-24x-...

16 years ago

This is the summary formula for photosynthesis: 6CO2+6H20 yields C6H12O6+6O2 Refer to the summary formula for photosynthesis. If you know the number of molecules or moles of any of the reactants used (or products produced), how would you calculate the num...

16 years ago

My teacher said this is a very hard question, but I'm trying to make an attempts. Can you guide me? A biologist places a plant in a closed chamber. A sensor in the chamber maintains the carbon dioxide level at the normal atmospheric concentration of 0.03%...

16 years ago

is the liver inferior or lateral to the lungs

16 years ago

On the question below, Bob Pursley said it was correct, however, I just wanted to make sure that it's not supposed to have another x value since it has x^2 in it. Solve the inequality: (2x-3)(4x)+x^2=>(3x+4)^2 I did 2x-3*4x 9x^2-12x on the left side on th...

16 years ago

The height s of a ball, in feet, thrown with an initial velocity of 112 feet per second from an initial height of 6 feet is given as a function of time t (in seconds) by s(t)=-16t^2+112t+20. 1. What is the maximum height of the ball? 2. At what time does...

16 years ago

Determine the center and the radius of the following circle: x^2+y^2+8x-2y=8 so I figured I'd use completing the square after putting it in standard form: (x^2+8x)+(y^2-2y)=8 I'm not sure where to go from here.

16 years ago

Actually, It is not a parabola, it is a W shape. I try to adjust my window and still can't see it on the screen ok. please help

16 years ago

No, I have never solved a quartic nor am I familiar with working with complex numbers. The only thing I have used is the rational roots theorem and that doesn't work here. Does that mean it can't be solved on the graphing calculator? Is there any way for...

16 years ago

Someone did answer it, however, I believe that their answer is incorrect. Also, I changed my answer a bit. I'm sorry, I messed up but I am becoming very frustrated with this problem.

16 years ago

Oh thanks didn't see this post. I realized I needed to make it equal zero. I keep getting 90 x^2 instead of 102 and 173 instead of 166. Why do they make this so hard?

16 years ago

Please disregard, I found your answer.

16 years ago

I'm looking at your solution and I can't figure out where that -6 came from.

16 years ago

You have to solve the absolute value first, then change the sign to the opposite. So, it is 4.3 + -7.2 = -2.9 Then take the absolute value of -2.9 which is 2.9

16 years ago

Thanks, getting something right gives me great confidence!

16 years ago

Thanks. I'm still confused though. I'm not sure how you got Area= W(8000-2W)= 8000w-2W^2 What happened to the L Do I need a system of equations? Sorry, this has got me stumped.

16 years ago

Ok, thanks so much for your explanations. So, is the max area 8,000,000?

16 years ago

Thank you soooooooo much, you are a great teacher! I truly understand!

16 years ago

THANKS!

16 years ago

Thanks, but I'm still really confused (that seems to be my mantra lately). I haven't had chemistry for 2 years and I'm at a loss, where to next?

16 years ago

Yes, I do know the meanings however I am confused because they both mean that they are away from the midline of the body Inferior is from the head down lateral is away from the mid I'm thinking lateral but still not positive can you clear it up for me?

16 years ago

The question states the lung is ______ to the liver I think it is inferior

16 years ago

so if the liver is below the diaphram and the lungs are above the diaphram isn't it inferior. Am I looking at this incorrectly?

16 years ago

OMG!!!! I can't believe I did that, thanks so much for your help

16 years ago

Figured it out -- sorry for doubting you. It's right!

16 years ago

oops! don't know why I put AP Calc, it's actually pre-calc....

16 years ago

Thanks for the info. I will ask my teacher on Monday.

16 years ago