Thursday
December 8, 2016

Posts by anonymous

Total # Posts: 103,168

precalculus
Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1
November 30, 2016

pre calculus
can you check this question? An object moving vertically is at the given heights at the specified times. Find the position equation s = at^2 + v0t + s0 for the object given the following conditions. •At t = 1 seconds, s = 48 feet •At t = 2 seconds, s = 64 feet •...
November 30, 2016

Calculus
Consider the function f(x) = {0, x = 0 and 1 - x, 0 <= x <= 1}. Which of the following statements is false? a. f is differentiable on (0, 1). b. f(0) = f(1) c. f is continuous on [0,1] d. The derivative of f is never equal to zero on the interval (0,1). B and D are true...
November 30, 2016

English
I got it...sent it in all ready.It is C....We all ready know God sees all and knows all, so that is not what is being reveled. Kugler regrets not finding the money is being reveled. Thanks for your help. :)
November 30, 2016

English
If you had read The Last Judgement could you please help me? God...."The fifth and sixth people were an old married couple;he finished them off with an axe and found practically no money, although they had more than twent thousand hidden away." Kugler jumped up: ...
November 30, 2016

Math
Find all solutions of the equation cot(theta)+1=0 through the interval [0,2pie).
November 30, 2016

precalculus
please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations given below. x+y+z=2 -x+3y+2z=8 4x+y=4 answer: 0...
November 30, 2016

Calculus
Which of the following functions does not satisfy the conditions of the Mean Value Theorem on the interval [-1, 1]? a. 5th root of x b. 2x arccosx c. x/(x - 3) d. sqrt(x + 1)
November 30, 2016

Chemistry 1
Which shows equilibrium between solute and solvent? I'm stumped. a. 2 M CaCl2 b. 1 g Na2CO3 & 100 mL H2O c. 2 mL methanol & 4 mL hexane d. 1 mL H2O & 3 mL ethanol
November 30, 2016

Chemistry
A 26.3 gram sample of solid potassium chlorate decomposed and produced 9.45 grams of oxygen gas. What is the percent yield of oxygen?
November 30, 2016

pre calculus
Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6
November 30, 2016

precalculus
Write the form of the partial fraction decomposition of the rational expression. 1/9x^2-4
November 30, 2016

michelle
An object moving vertically is at the given heights at the specified times. Find the position equation s = at2 + v0t + s0 for the object given the following conditions. • At t = 1 seconds, s = 48 feet • At t = 2 seconds, s = 64 feet • At t = 3 seconds, s = 48 feet
November 30, 2016

consumers math
Sam Sounds received a $290 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem.
November 30, 2016

Math
I am an odd number I am less than 100 The sum of my digits is 12 What am I
November 30, 2016

math
Town P is on bearing 315 degree from town Q. While town R is south of town P and west of town Q. If town R is 60km away from Q, how fara is R from P?
November 30, 2016

precalculus
write the equation of the parabola y=ax^2+bx+c that passes through the points(0,3), (1,4), and (2,3)
November 29, 2016

precalculus
write the system of equations in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6
November 29, 2016

precalculus
how do you determine when a system of equations is written in row-echelon form?
November 29, 2016

precalculus
write the form of the partial fraction decomposition of the rational expresion. (x^2-x+2)/x(x-1)^2
November 29, 2016

precalculus
write the form of the partial fraction decomposition of the rational expression (2x-4)/(x^2-1)
November 29, 2016

physics
why you expect the temperature of water at the bottom of Niagara falls to be slightly higher than the temperature at the top of the falls. Why?
November 29, 2016

Math
The of stamps owned by Shirley, Mary and Daisy is in the ratio of 5: 6 7. The total number of stamps is 540. Mary gives so of her stamps to Shirley and 40 stamps to Daisy. Find the new ratio of their stamps.
November 29, 2016

Math
1. Use point-slope form to write the equation of a line that has a slope of 2/3 and passed through (-3,-1). Write your final equation in slope-intercept form. Is the answer y=2/3+-1 2. Write an equation of the line that passed through (2,-1) and is parallel to the graph of y= ...
November 29, 2016

Math
I have 2 questions that I need help with if someone could please help me step by step to figure out how to do this equation it would be very helpful. Thank you 1. Suppose y varies directly with x and, y=15 and x=5. Write a direct variation equation that relates x and y. What ...
November 29, 2016

maths
a) 11,250 mL b) $60
November 29, 2016

Math
Needs more information...
November 29, 2016

Math
1.125 hours or 9/8 hours
November 29, 2016

American History
In New England, the town is a major unit of local government. Except for a few major cities, each of the six states in the region is divided into towns. Each town generally includes all of the rural and the urban areas within its boundaries. Which best describes the ...
November 29, 2016

social studies
How were the lives of white people in the north and south alike and different? can someone help me please
November 29, 2016

OPRE
A producer is very proud of the peaches he grows. He claims that, on average, 10% or less of his peaches in a bushel are defective. You take a sample of 400 peaches and find that 50 are defective. If α = 0.025, what will be the decision?
November 29, 2016

Math
There are 24 students in mrs. garcia's class .she wants to divide the class evenly into groups of at least 4students .write ways in which she can divide the class
November 29, 2016

pre calc
Find all solutions to the equation 2 sin^2(?) ? sin(?) ? 1 = 0. Please explain throughly. Thank you so much :)
November 29, 2016

Physics
A 42-kg box slides down a frictionless inclined plane. The angle of the inclined plane is 34.0 degrees. The distance from the box to the bottom of the inclined plane is 3 m. Draw the free body diagram of the force vectors acting on the box. Determine: a. The weight of the box ...
November 29, 2016

social studies
At home on the hills of Vermont or in the woods of Maine or the Texan ranch comrade of Californians comrade of free north sweeteners of every hue caste am I of every rank and religion. Why did Whitman compose these lines? A. to point out the vastness of the United States B to ...
November 29, 2016

Writing help
I know how to write a thesis statement... I just need some examples of what I could use as the proposals for small businesses..
November 29, 2016

Writing help
This is a proposal also..
November 29, 2016

Writing help
I need ideas for a thesis statement with the topic of "Helping Small Businesses Succeed."
November 29, 2016

social studies
The answer for the second is d
November 29, 2016

social studies
At home on the hills of Vermont or in the woods of Maine or the Texan ranch comrade of Californians comrade of free north sweeteners of every hue caste am I of every rank and religion. Why did Whitman compose these lines? A. to point out the vastness of the United States B to ...
November 29, 2016

math
y+4=-2(x+6)
November 29, 2016

social studies
Thanks
November 29, 2016

social studies
We were worked in all weathers. It was never too hot or too cold it could never rain blow hail or snow too hard for us to work in the field. Work work work The longest days were short for him and the shortest nights too long for him. Which statements best paraphrases the view ...
November 29, 2016

precalculus
Write the form of the partial fraction decomposition of the rational expression. 2x-4/x^2-1
November 29, 2016

pre calculus
Use Gaussian elimination to write the system of equations given below in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6
November 29, 2016

math volume
Tommy decided to also make a sampler can with a diameter of 2 inches and a height of 3 inches. Tommy calculated that the area of the base was es002-1.jpg, and multiplied that by the height of 3 inches for a total volume of es002-2.jpg. Explain the error Tommy made when ...
November 29, 2016

Latin
how do you say we will love in Latin?
November 29, 2016

Math
A class of 12 students has taken an exam, and the mean of their scores is 71. One student takes the exam late, and scores 92. After including the new score, what is the mean score for all 13 exams?
November 29, 2016

pre calculus
solve 2x + y = 8 4x + 2y = 16
November 29, 2016

PHYSICS
A girl on a carousel has a centripetal acceleration of 21.3 m/s2. What is the acceleration of the girl if the carousel's angular velocity is doubled?
November 29, 2016

precalculus
solve 17-9x=18y 12y=11-6x
November 29, 2016

precalculus
how do you solve 2x + y = 8 4x + 2y = 16
November 29, 2016

chemistry
Find the volume of carbondioxide produced when 25grams ofCalcium carbonate was completely burnt
November 29, 2016

chemistry
Find the volume of carbondioxide produced when 25grams ofCalcium carbonate was completely burnt
November 29, 2016

pre calculus
Create systems of equations in two variables that have (a) no solution, (b) one distinct solution, and (c) infinite solutions. Show that each system has the indicated number of solutions by using a graph or solving the system.
November 29, 2016

pre calculus
Describe the advantages and disadvantages of The method of substitution”, “The method of graphing”, and “The method of elimination” of solving systems of equations
November 29, 2016

precalculus
Which of the following shows an inconsistent system of equations? ________________________________________ 4x - 2y = 10 ; y = 2x - 5 3x + 2y = 1 ; 2x - 3y = 1 2x + y = 2 ; y = -2x - 2 3x + 4y = 5 ; 6x + 8y = 10 Is 4x-2y=10 y=2x-5 the correct answer?
November 29, 2016

precalculs
how do you find all the solutions to the system of equations .2x^2-2x-y=14 .2x-y=-2
November 29, 2016

precalculus
how do you find all the solutions to the system of equations .x+y=0 .x^3-5x-y=0
November 29, 2016

precalculus
8. Solve the system of equations shown below. .3/4x-5/2y=-9 .-x+6y=28 x = 21.5, y = 8.25 x = -8, y = 6 x = 8, y = 6 x = -21.5, y = 8.25
November 29, 2016

math
ervin sells vintage cars. every three months, he manages to sell 13 cars. assuming he sells cars at a constant rate, what is the slope of the line that represents this relationship if time in months is along the x-axis and the number of cars sold is along the y-axis?
November 28, 2016

Physics
A gun is shot horizontally from a building that is 10 meters high at a velocity of 220 meters/ second: I need to know what Vx is and Vy along with answering Vx after 3 seconds Vy after 3 second. We were given these equations Vy= Vy0-9.8t y= y0+Vy0t-4.9t^2 x=Vxt ,but I'm ...
November 28, 2016

math
Suppose you want to build a house on the edge of a hill that overlooks a deep valley. what measures could you take to be sure your home will not have problems due to weathering or erosion?
November 28, 2016

Math
an at display includes two sound-effects speakers. They need to be positioned on the wall so that when you stand midway between the speakers, you are no closer than 7 feet to either speaker. each speaker should be the same distance from the corner. How far from the corner ...
November 28, 2016

Math
Write an equation in slope-intercept form of the line that passed through (-3,4) and (1,4). I think the answer is y=0/4x+4 Thank you
November 28, 2016

probability
Rolling a 5 on a fair number cube
November 28, 2016

math
11 is correct, I checked on a calculator.
November 28, 2016

physics
3.23x104J / 1.21x104 = 2.66
November 28, 2016

Social Studies
Thanks
November 28, 2016

Social Studies
Where can I find a good map of China from the california standards chapter 7 lesson 1-4?
November 28, 2016

Algebra
y= 3x + 13 2x= y -9
November 28, 2016

Math word problems
Sally has 108 muffins,which he needs to box up, 6 of which are blueberry, into dozens. How many boxes does he need
November 28, 2016

Math
How do I write 15 times 3.4 using the distributive property?
November 28, 2016

World History
How did the Shinto belief system develop in early Japan? A. Clans erected shrines to worship their ancestors. B. Buddhist ideas evolved into Shinto beliefs. C. Warriors built shrines to remember fallen comrades D. Clans honored powerful natural spirits and gods. Is the answer ...
November 28, 2016

precalculus
Which of the following would be the best first step when solving the following system using the substitution method? • x - y = -4 ; • x + 2y = 5 x = -4 - y x = -4 + y 2y = 5 - x 2y = 5 + x I have solved the equation but I am unsure which is the best first step. x-y=-...
November 28, 2016

precalculus
Which of the following would be the best first step for solving the system of equations by elimination? • 6.3x + 7.2y = 5.4 • 5.6x + 6.4y = 4.8
November 28, 2016

pre calculus
A small fast food restaurant invests $4000 to produce a new food item that will sell for $3.50. Each item can be produced for $2.15. How many items must be sold in order to break even? Round to the nearest item.
November 28, 2016

precalculus
A small fast food restaurant invests $4000 to produce a new food item that will sell for $3.50. Each item can be produced for $2.15. Which of the following systems shows the cost and revenue functions for x items produced and sold?
November 28, 2016

Math
First, divide 56 by 14.That will give you the cost per each bottle. Then you multiply that cost by 50, to find the cost of the 50 bottles.
November 28, 2016

Physics
hi
November 28, 2016

Math
If the inverses of two functions are both functions, will the inverse of the sum or difference of the original functions also be a function? Explain your reasoning.
November 28, 2016

Math
How does one solve this? A= LxW ;w This is exactly how it was written and I heard your supposed divide something but I don't know...
November 28, 2016

Physics
A 27.9 kg block (m1) is on a horizontal surface, connected to a 6.50 kg block (m2) by a massless string as shown in the figure below. The frictionless pulley has a radius R = 0.090 m and a moment of inertia I=0.060 kgm2. A force F = 192.1 N acts on m1 at an angle theta = 32.1&...
November 28, 2016

maths
A boy throws a ball vertically upwards with a velocity of 10m/s.What is the velocity of the ball when it is half way up?
November 28, 2016

Math
Jasmine has taken a quiz she ks on question 16 and has completed 20% of the quiz. How many questions does the quiz have?
November 27, 2016

math
In a football game, a touchdown with an extra point is worth 7 points and a field goal is worth 3 points. Suppose that in a game the only scoring done by teams are touchdowns please help!!!!
November 27, 2016

pre calculus
Find all of the solutions of the equation x4-625i=0 and represent the solutions graphically. what is the next step to answer the question? (x^2-25?i)(x^2+25?i) (x-5?i)(x+5?i)(x-5?i i)(x+5?i i) i = 1 cis ?/2 ?i = ?1 cis ?/8
November 27, 2016

precalculus
use the information to solve the triangle. If two solutions exist, find both solutions can you show how to work this out? A=150°,b=4.8,a=9.4
November 27, 2016

Environmental Science please help
9 is false not true but I got a 9/10
November 27, 2016

Environmental Science please help
Number nine is wrong. It should be false
November 27, 2016

math
If 3 people worked and earned $5554.52 in one day. How much does each person earn if one worked for 5 hours, the other worked 7 and the other worked 8 hours?
November 27, 2016

pre calculus
How do you use de Moivre's formulas to find ?i?
November 27, 2016

precalculus
How do you convert <12,13> to polar form?
November 27, 2016

precalcalculus
use the information to solve the triangle. If two solutions exist, find both solutions. How do you work this out? 1.A=36°, B=98°, c=16 2.a=4,b=8,c=10 3.A=35°,b=8,c=12 4.A=25°,b=28,a=18 5.B=130°,c=10.1,b=5.2 6.A=150°,b=4.8,a=9.4
November 27, 2016

precalculus
how do you convert to polar form?
November 27, 2016

Physics
A brick of mass 2kg just begins to slide down an inclined plane at an angle of 45 degree with horizontal.what will be the force of friction
November 27, 2016

Math
find the velocity and direction of flight of a plane that is headed at 126 degrees with a ground speed of 215 mph in a 34 mi wind from south 36 degrees west
November 27, 2016

science
What is the average speed of a race cow that travels 60 meters in 20 seconds?
November 26, 2016

Instructional Materials
exam 026039RR
November 26, 2016

Math
A cooperation must appoint a president, CEO, COO,and a CFO. It must also appoint a planning committee with 3 different members. There are 15 candidates and officers can also serve on the planning committee. How many different ways can the officers be appointed? How many ways ...
November 26, 2016

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