Saturday

December 3, 2016
Total # Posts: 102,974

**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 Î± = 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*

**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**

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*

**Math grade7**

Anybody answer those

*November 26, 2016*

**pre calculus **

find (a)2v+u, (b)u-3v), and (c)5u-v. 1.u=i-j, v=6i+9j 2.u=2i+3j, v=-i-2j

*November 26, 2016*

**pre calculus**

find (a)2v+u, (b)u-3v), and (c)5u-v u=<-2,-3> v=<-1,-10>

*November 26, 2016*

**pre calculus**

Forces with magnitudes of 250 pounds and 130pounds act on an object at angles 45degrees and -60degrees respectively with the positive axis. Find the direction and magnitude of the resultant of these forces.

*November 26, 2016*

**pre calculus**

Find the component form and magnitude of the vector w that has initial point(-8,-12) and terminal point (4,1)

*November 26, 2016*

**pre calculus**

A triangular parcel of land has borders of lengths 55 meters, 85 meters, and 100 meters. Find the area of the parcel of land.

*November 26, 2016*

**pre calculus**

find (a)2v+u, (b)u-3v, and (c)5u-v u=<0,-4>, v=<-2,-8>

*November 26, 2016*

**pre calculus **

Write the complex number 100(cos240°+ i sin240°) in standard form.

*November 26, 2016*

**pre calculus**

Write the complex number z=-2+2i in trigonometric form.

*November 26, 2016*

**math**

you want to buy three books that are on sale at 20% off. the original prices of the books are $2.50, $4.95, and $6.00. How much will you save?

*November 26, 2016*

**pre calculus**

ea + bi = ea(cos b + i sin b) This formula gives rise to the equation e?i + 1 = 0. . Show how Euler’s formula can be used to derive this equation.

*November 26, 2016*

**pre calculus**

how do you use e^a+bi = e^(cos b + i sin b) to derive the equation e?i + 1 = 0

*November 26, 2016*

**math**

If f is a function such that the limit as x approaches a of the quotient of the quantity f of x minus f of a and the quantity x minus a equals 7, then which of the following statements must be true?

*November 26, 2016*

**math**

If f(?1) = ?3 and f prime of x equals the quotient of 4 times x squared and the quantity x cubed plus 3 , which of the following is the best approximation for f(–1.1) using local linearization

*November 26, 2016*

**math**

Which of the following is the best linear approximation for f(x) = sin(x) near x = ? seconds?

*November 26, 2016*

**Physics**

If the angle of incidence is 30degree and refractive index is 2 find the angle of refraction.find whether the medium is denser or rarer

*November 26, 2016*

**.**

This is what I got I was just unsure if it was right, thank you.

*November 26, 2016*

**Maths help asap please**

What is the smallest integer of c that satisfies the inequality of 3c-7 > 5c+4 Many thanks.

*November 26, 2016*

**math**

Thr sum of three numbers is 33.The first no.is twice the third no.The second no.is one more than the first.Determine the nos.

*November 26, 2016*

**Math**

The sum of two nos is 40, the smaller no is 6 less than the larger no, Find the nos

*November 26, 2016*

**Physics**

I omega = constant before I suppose we could model the device as a flat disk I = .5 M r^2 = .5(118)(1.8)^2 I omega = I (.47*2 pi) now after Inew = I + 20(1.8)^2 so I omega = Inew Omeganew .5(118)(1.8)^2(.47*2 pi)=Inew* Omeganew that will give omega new in radians/sec divide by...

*November 25, 2016*

**Physics**

A playground merry–go–round has a mass of 118 kg and a radius of 1.80 m and it is rotating with an angular velocity of 0.470 rev/s. What is its angular velocity after a 20.0–kg child gets onto it by grabbing its outer edge? The child is initially at rest.

*November 25, 2016*

**chemistry **

if i have an isopropyl group and the a carbon with a methyl group on it, will the methyl protons be split by the isopropyl protons? (CH3)2---C-C-(CH3)

*November 25, 2016*

**Physics**

(1/2) m v^2 = m g h

*November 25, 2016*

**Physics **

Jacob is a little too excited about finishing his homework and throws his hands up in the to shout, "I'm done!" He accidentally drops his 2.3 kg pencil straight down from a height of 2.12 m. what will be the kinetic energy of the pencil just before it hits the ...

*November 25, 2016*

**Physics **

Jacob is working on his physics portfolio and stands on a 0.45m high step. If Jacob’s mass is 103kg, what is his potential energy while on top of the step? Givens: Unknown: Equation: Substitute: Solve:

*November 25, 2016*

**biochemistry **

how many grams each of tris and tris HCl are needed to make up 500ml of 1m tris buffer with a PH of 8.0. pka of tris =8.3 mwt of tris =121 mwt of tris HCl =175

*November 25, 2016*