Wednesday
July 30, 2014

Posts by Jacob


Total # Posts: 654

Math
Thanks-got it cubic trinomial. Here's another one when I have to change signs of negatives and positives for addition and subtraction. How do I do for example 5w^2-4w-7-8w^2+3w-3?

Math
Q1. How do I know what a expression is called for example 6x^3-9x+3?

Physics
A horse draws a sled horizontally across a snow-covered field. The coefficient of friction between the sled and the snow is 0.195, and the mass of the sled, including the load, is 202.4 kg. If the horse moves the sled at a constant speed of 1.857 m/s, what is the power needed ...

Math
Enter parentheses to make the following expression have a Value of 45: 24/8*3+5*2+18/3 *= times/multiple /= divided by

Math
Enter parentheses to make the following expression have a Value of 45: 24/8*3+5*2+18/3 *= times/multiple /= divided by

National Junior Honor Society Essay Check
Don't Junior Honor Society Essays need to be in paragraphs?

math
compare rectangular pyramids and rectangular prisms.How are they alike?

physics help please
Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d: centripetal force on you t...

PHYSICS PLEASE HELP !
Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d: centripetal force on you t...

physics- MC QUESTIONS
thank you :]

math
what is a shape called with 1 small top,1 big bottom,and when the sides go up it gets smaller and when it goes down it gets bigger.

world history
B

physics
Q: AN OBJECT IS MOVING PAST YOU IN A STRAIGHT LINE WITH A CONSTANT SPEED. YOU CAN CONCUDED A. THAT THERE IS A CONSTANT FORCE IN THE DIRECTION OF MOTION B. THAT THERE ARE NO FORCES ACTING ON THE OBJECT C. THAT THE NET FORCE ON THE OBJECT IS ZERO D. NONE OF THE ABOVE Q#2 IF YOU...

PHYSICS
Q: AN OBJECT IS MOVING PAST YOU IN A STRAIGHT LINE WITH A CONSTANT SPEED. YOU CAN CONCUDED A. THAT THERE IS A CONSTANT FORCE IN THE DIRECTION OF MOTION B. THAT THERE ARE NO FORCES ACTING ON THE OBJECT C. THAT THE NET FORCE ON THE OBJECT IS ZERO D. NONE OF THE ABOVE Q#2 IF YOU ...

math
A snail crawled for 40 seconds at an average speed of 15 millimeters per second.Explain how to find the distance the snail traveled in centimeters

calculus
A magician writes a list of numbers, 1 through 10, on the board then turns his back to the board. Two audience members are asked to write different numbers from 1-10 in the first two spaces. One of the spectators adds the two numbers and places the result in position 3. Then t...

Computer Science
I got part one but part 2 is confusing. Part1: Create a class called Person that has two subclasses Student and Employee. Make Faculty and Staff subclasses of Employee. A person has name and address. A student has GPA as a real number between 0.00 and 4.00. An employee has an ...

math
a survey was taken at the park. Children were asked how many times they had visited the park this year. Find the range, mode, and median of the data to the right. trips to the Park ----------------------- number of number of visits visitors 3 ///// 4 /// 5 /////// 6 //////

statistics
writing to explain. the median score on a test is 90. is it possible to add two more scores to the data and still have a median score of 90? explain ypur answer

math
a survey was taken at the park. Children were asked how many times they had visited the park this year. find the range, mode, median of the data to the right. trips to the park. number of visits 3 4 5 6

math
a survey was taken at the park. Children were asked how many times they had visited the park this year. find the range, mode, median of the data to the right.

Math
64/8*3+25/5*8=

Math
There are four people that want to cross a bridge. Sam can cross in 1 minute, Joe can cross in 2, Jack can cross in 5, and Steve can cross in 10. They have one flashlight, and two can cross at a time, but they must go at the same pace. So if Steve and Sam cross together, they ...

math
57 Cds in 8 organizers drawpicturesto tell how many are in each group and how many are left over.

math
9 because you have the answer.9x8=72

maths
can someone please help?

maths
could you please help me.... Draw the graph of y=x-3 for values of x from -3 to 4 also how would you draw the graph of to 2x+y=7 for values of x from 0 to 5 i don't need the graph drawn i just need two plots for each! thanks

3 grade math
my teacher dose not teach us that

Chemistry
How many grams of Ag2S can be generated from a mixture of 2.48 g Na2S and 3.41 g of AgNO3 given the following unbalanced reaction: Na2S(aq) + AgNO3(aq) → Ag2S(aq) + NaNO3(aq)

calculus
a.) g(1)= 1^5= 1 f(g(1))=5e^1= 5e? d.) g(f(x))= g(5e^x) = (5e^x)^5? e.) I'm really guessing on this last one because I'm not sure but I'll try it anyway ((5e)^t)(t^5)?

calculus
For the function f(x)=5e^x and g(x)=x^5, find the following: (a) f(g(1))= (b) g(f(1))= (c) f(g(x))= (d) g(f(x))= (e) f(t)g(t)=

Physics
A pendulum has a period of 0.70 s on Earth. What is its period on a planet where the acceleration of gravity is about 0.31 that on Earth?

calculus
Evaluate the following integrals by using appropriate method : ∫cos⁡ ^3 ( 2x-5 )dx help

calculus
find dy/dx when y = (5 sec^2 x-7 ) ^3 (x^5-5 cosec x - 1)^7 help

math
x^2 +6x+9=24+9 (X+3)^2=33 x+3=sqrt(33) x=+-sqrt(33)-3 or look up Quadratic formula

Physics
Assume that the Starship Enterprise is moving through space at the speed of light. Calculate how much kinetic energy the ship has at this speed. The Enterprise has a mass of 1*10^6kg. Now imagine that Captain Kirk wants to bring the ship to a complete stop in a distance of 30k...

math
1/2 is the same as .5 and 50% 2/5 is the same as .4 and 40% fractions, decimals and percentages are all interchangeable, however percentages are generally just used in charts for a marketing group to understand (they like percents better).

chemistry
metals have lots of free or lose electrons that allows the energy to move freely while insulators electrons are tightly bound and don't allow for lots of energy movement

Ap calc
A particle moves on the x axis so that it's position at any time t is greater than or equal to 0 is given by x(t)=2te^-t. A) find velocity for any t is greater or equal to 0

Calculus
If x^3 = 1 and x does not equal 1, x(x+1)= ?

Statistics
The lifetime of a certain smart phone battery has an unknown distribution with mean value of 8 hours and standard deviation of 2 hours. What is the approximate probability that the average battery lifetime of a sample of 36 batteries will exceed 8.1 hours?

Statistics
The lifetime of a certain smart phone battery has an unknown distribution with mean value of 8 hours and standard deviation of 2 hours. What is the approximate probability that the average battery lifetime of a sample of 36 batteries will exceed 8.1 hours?

precalculus
State the parent function that must be transformed to create the graph of y=2/3x^3 - 2. Describe the transformation that must be applied to the parent function. Parent function= x^3 I don't know the transformation...

Math
Explain how you can determine if a linear factor of a function is squared or cubed by examining the graph of the function. Halp I dont know :|

Math
Can someone help me with these T.T 1.Which polynomial function would have the end behaviour of as x-> -∞, y= +inf and as x-> ∞, y-> -∞? a) f(x) = -6x^4 - x^5 + 5x^3 - x^2 - 4x + 9 b)f(x)= 6x^4 + x^5 - 5x^3 + x^2 + 4x - 9 c)f(x) = 3x^2 + x - 11 d)-2x^...

social studies
what was the boston massacre

Math
Some students might argue that if you know how to factor a sum of cubes, then you do not need to know how to factor a difference of cubes. Explain why you agree or disagree.

Math
A rectangle with vertices at (2,5), (7,5), (7,8) and (2,8) is revolved around the line y=5 to obtain a cylinder. What is the volume of the cylinder? Express your answer in terms of pi.

Math
Explain how to determine the value of x that gives a maximum for a transformed cosine function in the form y=acos(k(x-d)) + c, a>0, if the maximum for y=cosx occur at (0degrees, 1)

Physics
A ball of mass 5.3 kg and radius 8 cm rolls without slipping horizontally at 4.3 m/s and hits a spring attached to a wall. What is the maximum change in length of the spring if the spring constant k=41100N/m? (Assume the floor is frictionless)

Physics
A Ferris wheel with radius 11.0 m rotates at a constant rate, completing one revolution every 33.9 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction (in degrees below direc...

Pre Calc
sec(cos-1 (4/5))=?

Pre Calc
tan(tan-1 7.4)=?

Accounting
Because DeVry is asking you this question in this week's discussion...seriously, do the research yourself...see you in the threads!

derivatives
How do I find the 2nd derivative of x^(-1/15)

consumer mathB
Your box of raisin bran cost $1.89 last year. This year it costs $2.25. What is the inflation rate?

Chemistry
Obtain the radius of a sphere of zinc if its mass is 0.23 mg. The density of zinc is 7.14 g/mL. The given formulas are: d=m/v v=(4/3)pi r^3

chemastrey
of exhow many grams of no2 can be produced by the reaction of excess o2 with 19.8 of no

SCIENCE
Last one. What is the first element on the periodic table? I already answered these questions but I'm making sure they are correct:D Thanks

SCIENCE
K is the chemical symbol for which element?

SCIENCE
What is the name of the 2nd biggest planet in our solar system?

Science 6TH Grade
ffefeffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

World History
a.kush

chemistry 12
i got K= (HOBr2)(OH)/(HOBr) 2.0x10^-9 = (x)(x)/0.18M x= 11x10^-6 (OH-) =11x10^-6 (H3O)= 1.0x10^-14/11x10^-6 =9.0x10^-8

chemistry 12
Calculate [H3O+] and [OH-] in 0.18M hydrobromic acid, HOBr(aq), having a K of 2.0x10^-9? I got 9.0x10^-8

chemistry 12
What i got was : a) K = (3.0x10^-6)(0.12)/(0.12)(0.12)= 0.6 b) i got 1.90%

chemistry 12
A) Calculate [OH^-] in a o.12 M solution of hydrazine, H2NNH2(aq), having K of 3.0x10^-6. B) what is the percent ionization of the H2NNH2(aq) I can't get these for the life of mee!

Math
On Friday, Jan hiked in the woods. If she hiked a vertical distance of 60 meters relative to sea level and then down 86 meters, where would she be relative to sea level if she started at 0?

Math
On Friday, Jan hiked in the woods. If she hiked a vertical distance of 60 meters relative to sea level and then down 86 meters, where would she be relative to sea level if she started at 0?

science
why are minerals important and what are 2 examples

ENG
how to write a article review ?

Math
There are one thousdand students in Central High School. Three hundred twenty-eight of the students are seniors. Write the decimal that shows what part of the student body is in the senior class.

math/geometry
A football isnt a sphere

algebra
After m minutes an adult blikns about 10+3times.about how many times does an adult blink in three minutes? in two hours?

math please help me
18n-20 = 36-10n then what is n? please please help me

5th Grade Math
you want to estimate 5.25 - 3.3. why would using front-end estimation and adjusting tell you more about the answer than rounding?

geometry
Given that Vector BD Angle ABC, Measures Of Angle ABC =6x - 12, And Angle = 72 Degres, Which Equations Could Be Used To Find The Value Of X? A - 6x - 12 = 72 B - 1/2 (6x-12) = 72 C - 2(6x - 12 = 72 D 6x - 12= 2(72) Can Anyone Help Me How To Solve Or Help Me On Anything

geometry
Use formulas to find the lateral area and surface area of the given prism. The base of the prism is the rectangle with sides of length 13m and 5m. Show your answer to the nearest whole number.

Math - Calculus
I don't understand? Can you please explain?

Math - Calculus
Find the equation of the non-vertical asymptote. What is the smallest value of x at which f(x) intersects its? -6x^3 + 2x^2 - 9x +3 / -5x^2 +9x - 4 1)Find the equation of the non-vertical asymptote. 2)What is the smallest value of x at which f(x) intersects its non-vertical as...

Chemistry
A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy if the pressure is increased to 894 torr at constant temperature?

English
im english

Reading
Which word from the choices below is described the poem that follows? We start escaping this when we Sing "A-B-C-D-E-F-G." That song is not enough, and yet The first step is the alphabet! a. aristocrat b. illiteracy c. aura d. essence Help if you can

Reading
Woops sorry and thanks lol

Reading
Poem "A Voice," By Pat Mora How do you interpret the speaker's statement that her mother's breath "moves through the family like the wind moves through the trees

Social Studies
What Indian tribe helped Lewis and Clark build a canoe?

Statistics
Use the multiple regression equation to predict a persons salary. Assume that the variable A is the number of years of college. Assume that the variable B is the number of years of experience. Suppose the person has 7 years of college and 3 years of experience. What should the...

physics hw urgent please
show how you would you arrange to find f in terms of v,m and r from four equations below. f=1/t, f=ma,v=2piR/T,a=v^2/R Thanks

chemistry
what are the acids, bases, conjugated nacids and conjugated bases of the equation H2O+H2O->OH-+H3O?

MATHS
i need majer help man

math
find the axis of symmetry f(x)=-2x2-12x+8find the axis of symmetry f(x)=-2x2-12x+8

Algebra
Pauline sells computers on commission. She spends 2 hours on selling a laptop and 1 hour on selling a desktop computer. She works no more than 40 hours per week and routinely sells at least 1 laptop and at least 4 desktops each week. To maximize her income, how many of each ty...

Math
Math.. find limit help? Find the given limit. (x→ 1)lim: (square root x-1) + 1

Math
First find the general derivative of f (x) = (√x −1) . Then find the equation of the tangent line to the graph at x = 10.

algebra
Part $30000 is invested at 6% another part at 7% and the remainder at 8% yearly interest the total yearly income from the 3 investments is $2200

algebra
Melinda invested three times as much money at 9% yearly interest as she did at 7%. her total yearly interest from the two investments was 170$ How much did she invest at each rate Thanks !!

Algebra
X+y+z=2200

Algebra
Not really having trouble with this one for some reason

Algebra
Sam invested $1950 part of it at 6% and the rest at 8% yearly interest. The yearly income on the 8% invest was 6$ more then twice the income from the 6% investment. how much did he invest at each rate

Math
Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

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