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October 1, 2014

Posts by becky


Total # Posts: 505

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

physics
Given that the Moon's period about the Earth is 27.32 days and the distance from the Earth to the Moon is 3.84*10^8 m estimate the mass of the Earth. Assume the orbit is circular. Why do you suppose your estimate is high? The force of attraction= centripetal force G MeMm/d...
January 8, 2007

physics
Use the table of 7.3 to find the point between the Earth and the Sun at which an object can be placed so that the net gravitational force exerted on it by these two objects is zero. TABLE 7.3 <--- for the earth and the sun Body
January 8, 2007

physics
1. the average distance separating the Earth and the Moon is 384 000 km. Use the data table 7.3 to find the net gravitational force the eath and the moon exerts on a 3.00*10^4-kg spaceship located halfway between them. TABLE 7.3 <--- for the moon and the earth Body
January 8, 2007

math
the vertices are at (2,1) and (2,7) and focus is at (2,*) write the equation of the hyperbola that meets each set of conditions. Is the asterisk supposed to be an 8? It has to be some number. I will set this up for you later of you respond. The fomulas you need are in most ...
January 4, 2007

US history
here is my question Why did socialism appeal to some Americans in the late 1800s? Many people were disturbed by the horrendous working conditions for laborers in factories. They worked long hours, made very little money, and therefore lived economically impoverished lives. ...
January 4, 2007

physics
A 2000-kg car rounds a circular turn of a radius 20m. if the radius flat and the coefficient of friction between tires and road is .70, how fast can the car go without skidding? centripetal force = frictional force m v^2/r= mg*mu solve for v. um i was wondering..do i need to ...
January 2, 2007

physics
hi i have a physics question i dont understand here is the question A sample of blood is placed in a centrifuge of radius 15 cm. the mass of the corpuscle is 3.0*10^-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.0X10^-11 N. At how many...
January 2, 2007

English Essay
i was wondering if anyone can help me with an essay that is a comparison between the Rapunzel by the Grimm Brother's to a story called "Rapunzel Rapunzel" by Jean Ryes. The prompt is: Compare the two essays with the hair,tower and princ and how it is related to ...
December 10, 2006

Physics
sorry i know i keep asking but my teacher wont be here today and tomorrow..and i dont understand these four problems... 1) a 65.0-kg person throws a .045kg snowball forward with a ground speed of 30.0 m/s. a second person with a mass of 60.0-kg catches the snowball. both ...
December 8, 2006

Physics-momentum/impluse
hi well i have two questions i dont understand how to solve and all. 1) The front of a 1400-kg car is designed to absorb the shock of a collision by having a "crumple zone" in which the front of 1.2m of the car collapses in absorbing the shock of a collision. if a ...
December 6, 2006

the big idea of energy
You guys I have an assesment on the "The Big Idea of Energy" and I have no clue about it, no one told be anything! It's soooo stupid so you have got to tell me what it NOW!!!
December 5, 2006

physics-energy
HI well i have two questions 1) a 2.0-m-long pendulum is released from rest when the support string is at an angle of 25 with the vertical. what is the speed of the bob at the bottom of the swing? 2)A 2.0*10^3-kg car starts from rest at the top of a 5.0-m-driveway that is ...
November 27, 2006

Math-acceleration
An object moves across a straight line so that after t seconds, is distance from its starting point is: D(t)=t^3 - 12t^2 + 100t + 12 meters. Find the acceleration of the object after 3 seconds. I believe acceleration is calculated by taking the second derivative. D'(t) = ...
October 3, 2006

technology
can you please tell me types of metal and about them thanks
September 23, 2006

making dot arrays
Numbers that CAN be made into a 2-row dot array are EVEN numbers (2,4,6,8,etc). Those that CANNOT are called ODD (1,3,5,7). in other words, if the question is asking you to make a 2-row array, it wants you to divide the number by two and make 2 rows of X dots. Example - Make a...
August 31, 2006

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