Saturday

August 27, 2016
Total # Posts: 620

**algebra**

What would be the discriminant for this equation: x^2-2x+12=0 How many solutions are there? I have that the discriminant is -44 and since the discriminant is negative, the square root of the discriminant is a pure imaginary number. Is this correct?
*March 7, 2008*

**Algebra**

Thank you very much. I am not very good at Algebra, but maintaining an "A". I want to totally understand how the numbers are arrived at and then it makes complete sense.
*March 6, 2008*

**Algebra**

Aki's Bicycle Design has determined that when x hundred bicycles are built, the average cost per bicycle =0.9x^2-1.7x+10.861, when C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle? C(x)=0.9x^2-1.7x+10.861 = C(...
*March 6, 2008*

**algebra**

Aki's Bicycle Design has determined that when x hundred bicycles are built, the average cost per bicycle =0.9x^2-1.7x+10.861, when C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle? C(x)=0.9x^2-1.7x+10.861 = C(...
*March 5, 2008*

**algebra**

Is it possible to have different quadratic equations with the same solution? Explain.
*March 2, 2008*

**algebra**

Simplify ^3sqrt1000
*February 25, 2008*

**english**

How do you write a report on improvements in your area?
*February 24, 2008*

**algebra**

simplify 23sqrt(32x^2)-2sqrt(50x^4)
*February 21, 2008*

**Math Analysis**

The solution of 5x>2x is?
*February 18, 2008*

**algebra**

yes, please and thank you
*February 17, 2008*

**algebra**

5sqrt18^2-3sqrt50x^2=
*February 17, 2008*

**algebra**

How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression as an example.
*February 17, 2008*

**algebra**

Why is it important to simplify radical expressions before adding or subtracting?
*February 17, 2008*

**algebra**

Find the LCM 15b^3a^3, 5b^8,a^2, 6b^2a^6
*February 12, 2008*

**algebra**

Solve. 8/w = 9/w - 1/2 The solution is:
*February 12, 2008*

**algebra**

Subtract. Simplify if possible. 6/x+b - 6/x-b
*February 12, 2008*

**algebra**

Thanks Guido.
*February 12, 2008*

**algebra**

Add. Simplify if possible. 7/9z^3 + 1/21z^3 I came up with 49+3z/63z^3 Is this correct?
*February 12, 2008*

**algebra**

Divide and simplify -35+7w / 121w-605 ______ __________ 5 25 I know you invert the second half of the equation to multiply and then I am stuck.
*February 12, 2008*

**algebra**

Simplify by removing factors of 1. 9v-81 over 9v
*February 11, 2008*

**algebra**

multiply and simplify 10x^3 over 3r^3 multiplied by 9r^4 over 100x Is the correct answer 3x^4r^6 over 10??
*February 11, 2008*

**algebra**

When solving a rational equation, why is it necessary to perform a check?
*February 10, 2008*

**algebra**

Thanks Dan. You are one very smart cookie.
*February 7, 2008*

**algebra**

Factor: check by multiplying x^2-6x Is this correct? x^2(x-5)
*February 7, 2008*

**algebra**

Add (r-8s+6)+(4r+7s)+(s+3) Is this right? 5r+9
*February 7, 2008*

**algebra**

Factor by grouping 5x^3-5x^2-x+1 Would it be? (x-1)(5x^2-1) or (5x^2-1)(x-1) Usually the answers are in descending order.
*February 7, 2008*

**algebra**

Choose the simplifed form of (4n^-3)^-3. The choices are 1/64n^9 4n^-9 64/n^9 64n^9 I chose 64/n^9
*February 7, 2008*

**algebra**

Is there a reason that the answer wouldn't just be 6^3? The instructions say to type the exponential notation with positive exponents.
*February 7, 2008*

**algebra**

Divide and simplify 6^6/6^3 Would the answer be 216 or 6^3?
*February 7, 2008*

**algebra**

So, would the answer be -2x^4+7^2
*February 7, 2008*

**algebra**

Multiply (7-2x^4)^2 Is this right? 36(-2x^4+7)
*February 7, 2008*

**algebra**

Factor completely w^2+9-6w Is this right? (w-3)(w-3)
*February 7, 2008*

**algebra**

Simplify 1/9^-4 One divided by 9^-4 Directions say to simplify answer and type an integer or a fraction. Is 6561 correct?
*February 7, 2008*

**algebra**

(-7x+3)+(4x^2+1/2x-10) one-half Is this right? 8x^2-13x-14 divided or over denominator 2
*February 7, 2008*

**story problem**

Thanks. You are such an ego booster. I am doubting how much I really know.
*February 7, 2008*

**story problem**

The mass of Pluto is about 1.31 x 10^19 metric tons. The mass of the sun is about 1.998x10^27 metric tons. About how many times the mass of Pluto is the mass of the sun? Give answer in scientific notation. Is this correct? 1.53x10^8
*February 7, 2008*

**more algebra**

(4-x)(3-2x)= Is this correct? 12-11x+2x^2
*February 7, 2008*

**algebra**

(1.6x^3+4.7x^2-3.8x)-(-4.3x^3-4.4x^2+55) Is this correct? 5.9x^3+9.1x^2-3.8x-55
*February 7, 2008*

**algebra**

(x^6-13x^3+42)divided by (x^3-6) Is this correct? x^3-7
*February 7, 2008*

**algebra**

40x^8-56x^4+24x divided by 8x Is this correct? 5x^7-7x^3+3
*February 7, 2008*

**algebra**

Factor - check by multiplying Is this right? x^2-6x = x^2(x-6)???
*February 6, 2008*

**algebra**

No, really the problem is &-7x+3)+(4^2+1/2 {one half}x-10 I came up with -14x^2+8x^2-13 over 2 Is this correct?
*February 5, 2008*

**algebra**

(-7x+3)+(4x^2+1/2x-10)
*February 5, 2008*

**algebra**

(-7x+3)+(4x^2+1/2x-10) Simplify answer - -14x^2+8x^2-13 over denominator of 2?
*February 5, 2008*

**algebra**

If I add x^5+5x^4 is the answer 6x^9?
*February 2, 2008*

**algebra**

Yes, thank you. I had the answer you wrote but wasn't sure.
*February 2, 2008*

**algebra**

Would the problem (xz^3)^-4 be simplified to 1/x4z12?
*February 2, 2008*

**algebra**

So, I come up with -8x^6-8x^2+-5 Would that simplify to x4+-5?
*February 2, 2008*

**algebra**

Divide 32x^8-32x^4+20x^2 by -4x^2
*February 2, 2008*

**algebra**

Find the perimeter of a polynomial with sides 3x 9 4x 6 6x+1 6
*February 2, 2008*

**algebra**

thank you so much
*January 15, 2008*

**algebra**

Given f(x)=2x+4, find f(a-4) a) 2a-4 b) 2a c) a+2 d) a-4
*January 15, 2008*

**algebra**

a) 2a-4 b) 2a c) a+2 d) a-4
*January 15, 2008*

**algebra**

Given f(x)=2x+4, find f(a-4)
*January 15, 2008*

**algebra**

Are the following lines parallel, perpendicular, or neither? x-6y=12 6x+y=6
*January 15, 2008*

**algebra**

Write the equation of the line passing through (1,0) and (1,-1) a) x=1 b) y=1 c) y=x+1 d) y=-x
*January 15, 2008*

**algebra**

it would be 9+7
*January 15, 2008*

**algebra**

When I multiply 6v^9*10v^7 I get 60v^16 My question is, do I add the 9+7 or multiply the 9*7?
*January 15, 2008*

**algebra**

here I go, answer d
*January 15, 2008*

**algebra**

Write the equation of the line passing through (1,0) and (1,-1) a) x=1 b) y=1 c) y=x+1 d) y=-x
*January 15, 2008*

**algebra**

answer a
*January 15, 2008*

**Algebra**

Are the following lines parallel, perpendicular, or neither? x-6y=12 6x+y=6
*January 15, 2008*

**Science-- Physics**

Does an object need to have a velocity of 0 meters per second to be in equilibrium and why/why not?
*January 10, 2008*

**math**

purple- 21/63 reduced to 1/3 brown- 21/62
*January 10, 2008*

**algebra**

Adult tickets for a play cost $16 and child tickets cost $5. If there were 22 people at a performance and the theater collected $275 from ticket sales, how many children attended the play? A) 6 B) 7 C) 8 D) 15
*January 10, 2008*

**algebra**

Given f(x) = 5xsquared - 3x + 1, find f(-2)
*January 10, 2008*

**algebra**

graph the inequality y > -4
*January 10, 2008*

**algebra**

Sorry, it should read y=-5x+3
*December 27, 2007*

**algebra**

Solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent. 10x+2y=7 y==5x+3
*December 27, 2007*

**algebra**

Find values for m and b in the following system so that the solution to the system is (-3,4). 5x+7y=b mx+y=22
*December 26, 2007*

**algebra**

Solve the following systems by substitution. 4x-12y=5 -x+3y=-1
*December 26, 2007*

**Algebra**

Rewrite into standard form (0,5), m=-3/5. Write the equation of the line passing through each of the given pairs of points. Write the answer in slope-intercept form, where possible. (2,-3) and (2,4)
*December 9, 2007*

**GCSE Biology**

how is the structure of a sensory neurone allows it to do its job
*December 9, 2007*

**SOCIOLOGY**

explain to me why applying sociological perspective can make as seen less in control of oor lives
*December 8, 2007*

**math**

A full grown oak tree loses an average of about 7 tons of water through its leaves per day. About how many tons of water is that per year? I need an exact answer using partial products. Can anyone please hlep?
*December 4, 2007*

**Algebra**

2(x-3) - 3(x+5) = 3(x-2) -7 (2x-6) - 3x+-15 = (3x-6) -7 -x-21 = 3x-13 -x-3x = -13+21 -4x = 8 x = 8/-4 x = -2 Is this correct?
*November 25, 2007*

**Algebra**

2(x-3) - 3(x+5) = 3(x-2)-7 2x - 6 - 3x + 15 = 3x - 6 - 7 2x - 6 + 6 - 3x +15 + 6 = 3x - 6 - 7 2x - 3x + 22 = 3x - 7 2x + 22 = -7 Now I am stuck
*November 25, 2007*

**Algebra**

2(x-3)-3(x+5) = 3(x-2)-7
*November 25, 2007*

**Chemistry**

I have a bag of m&m's with 52 in it and on the pkg it states it weighs 47.9g. If I divide by 52 it gives me .92g per m&m. To find out what the mass is of a mole of m&m's do I Multiply 6.02 x 10 to the 23 power x .92g for my answer?
*November 9, 2007*

**Social Studies**

The Adironadack Mountains, the Hudson and Mohawk Valleys, and the Atlantic Coastal Plain are all examples of ?
*October 16, 2007*

**physics**

OH! Then subtract 273 from answer to change it to celcius.
*April 26, 2007*

**physics**

1000 = (5.67*10^8)(1m^2)(T^4) Then solve for T :)
*April 26, 2007*

**Vitamins**

I just took a quiz with this exact same question and the answer is Vitamin A, Vitamin D, and B6.
*April 20, 2007*

**organic cehmistry**

I am totally lost on the subject of Fischer projection. I have no clue on where to begin solving : (S) 3-chloro-1-penten-4-yne http://www.mhhe.com/physsci/chemistry/carey/student/olc/ch07projections.html
*April 7, 2007*

**Math**

An electronics firm uses 600 cases of transistors each year. The cost of storing one case for a year is 90 cents, and the ordering fee is $30 per shipment. How many cases should the firm order each time to keep total cost at a minimum, assuming the transistors are used at a ...
*March 19, 2007*

**Calculus II**

What is sin(i) -- (sin of the imaginary number, i) What is cos(i)-- cosine of the imaginary number, i orrr tan(1+i) You can derive these things from the equation: Exp(i x) = cos(x) + i sin(x) ---> sin(x) = [Exp(ix) - Exp(-ix)]/(2i) cos(x) = [Exp(ix) + Exp(-ix)]/2 tan(x) = 1...
*March 5, 2007*

**Math Question**

Which one of the following pairs of triangle must be similar? a) two isosceles triangles with congruent vertex angles b) two right triangles c) two scalene triangles with congruent bases d) two obtuse triangles a) if the two vertex angles are the same then the other two angles...
*March 4, 2007*

**Math**

If two angles of one triangle are congruent to two angles of another triangle, these triangles must be a) scalene b) similar c) congruent d) isosceles Dont all traiangles have 180 degrees? So if two angles were congruent, what about the third? I still don't get it. I would...
*March 4, 2007*

**Math Question**

If two sides of a triangle have lengths 4 and 9, then the length of the third side may be any number a) less than 13 b) greater than 5 but less than 13 c) greater than 4 but less than 9 d) greater than 5 I suggest you draw this. It is not d, nor a. it is b. Am I correct? yes ...
*March 4, 2007*

**chemisty help**

for the reaction shown, compute the theoretical yield of the product in grams for each of the following initial amounts of reactants. Ti + 2F2 to make TiF4 There are 3 sub questions for this. Help me out with one, then I'll try to figure out the rest. thanks a) 4.8g Ti; 3....
*March 1, 2007*

**Poetry: The Next War Wilfred Owen**

The theme of this poem is a look to the future where men would war against death to save lives.
*February 8, 2007*

**science**

230 volts, 120 watts what fuses will i need a 3A, 5A, 13A please answer Power= V*I so currnt= power/V in this case 120/230, in this case less than an ampere. So use the 3A.
*January 25, 2007*

**Why can't I post**

I dont know why, but i am getting a friend to post this up for me, but i cannot post a question, when i do, the successful window never comes up. it just goes back to the forum and doesnt add. can anyone help me why? or what i might need to do to get it fixed? This posted and...
*January 18, 2007*

**math**

3vt+v(5v-7t 5v^2 - 7vt + 3vt combine the last two terms.. 5v^2-10vt factor out a 5v 5v ( you do the rest).
*January 10, 2007*

**Chemistry Check if its right XD**

Ok here is the problem but i only need help on part a XD i think i did it wrong..so can you check my work? and tell me where i made the mistake? The space shuttle uses aluminum metal and ammonium perchlorate, NH4ClO4, in tis reusable booster rocket. The products are aluminum ...
*January 9, 2007*

**Biology help..!**

How does the nucleotide sequence in one chain of DNA compare with the other chain of DNA? The are complementary. How does the nucleotide sequence in one chain of DNA compare with the other chain of DNA?
*January 9, 2007*

**Biology**

1. How many base pairs are in a full turn or twist of a DNA molecule? 2. Name the complementary base pairs on DNA. A-T; G-C are the pairs, you name them. there are 10 1/2 base pairs for a full twist in DNA How does the nucleotide sequence in one chain of DNA compare with the ...
*January 9, 2007*

**English, Poetry Riddles**

Legs I have got, yet seldom do I walk; I backbite many, yet I never talk; In secret places most I seek to hide me, For he who feeds me never can abide me. [p.s pleeeeeeease help me!! :S
*January 8, 2007*

**physics**

IO, a small moon of the girant plant jupiter has an orbital period of 1.77 days and an orbital raduis equal to 4.22*10^5km. From these data, determine the mass of jupiter. nvm XD i solved it myself ^^
*January 8, 2007*

**physics**

A satellite has a mass of 100 kg and is in an orbit at 2.00*10^6 m above the surface of the Earth (a) what is the potential enegry of the satellite at this location?(b) what is the magnitude of the gavitational forece on the satellite? a) Since the weight drops somewhat as a ...
*January 8, 2007*