# Posts by Anonymous

Total # Posts: 106,827

**math**

A pair of dice is rolled. Find the probability of rolling ?a) a sum not more than 1010?, ?b) a sum not less than 77?, ?c) a sum between 33 and 77 ?(exclusive).

*February 28, 2017*

**Chemistry **

Calculate the wavelength of nitrogen molecule travelling with a speed of 500 m/s

*February 28, 2017*

**Math - Linear Approximation **

Use a linear approximation to estimate the number (27.07)^(2/3)

*February 28, 2017*

**Related Rates**

Nevermind, I got it. it's 7.21

*February 28, 2017*

**Calculus**

The graph of the equation is x^2+xy+y^2=9 a) What is the equation of the right most vertical tangent? b) That tangent touches the ellipse where y= what? I've calculated the derivative to y'=(-y-2x)/(2y+x) and I found the horizontal tangents. How do I do this part?

*February 28, 2017*

**science**

The effects of electricity can be explained by the structure of the _______?

*February 28, 2017*

**Math - implicit differentiation**

What numbers am i plugging in? Solving for y' gives me (-y-10x-2)/x. Plugging in 2 for x doesn't give me the right answer, so I don't know where to go from there.

*February 28, 2017*

**Math - implicit differentiation**

Suppose 5x^2+2x+xy=2 and y(2)=?11. Find y?(2) by implicit differentiation.

*February 28, 2017*

**Physics**

12.8cm

*February 28, 2017*

**physics**

Find the length of a pendulum that oscillates with a frequency of 0.25 Hz

*February 28, 2017*

**Intermidiate Algebra**

While hovering near the top of a waterfall in a national park at 23042304 Ã¢â‚¬â€¹feet, a helicopter pilot accidentally drops his sunglasses. The height h left parenthesis t right parenthesish(t) of the sunglasses after t seconds is ...

*February 28, 2017*

**Math**

Calculate the perimeter of a rectangle whose length and breadth are 15m and 12m.find the cost of fencing the field at the rate of rs 25 per meter.

*February 28, 2017*

**BUSINESS MATHS**

William has been contracted to paint a school classroom. The classroom is 20 m long, 15 m wide and 5 m high. There are four windows (2m by 3m) and a door (2m by 1m). a) What is the cost of painting the ceiling at N$ 6.50 /m²? [5 marks] b) What is the cost of painting the ...

*February 28, 2017*

**Us HISTORY**

How badly do you think relations with the Soviet Union were strained when the U2 was shot down in 1960? Explain your answer...

*February 27, 2017*

**chemistry**

Write the reactants and products of the reaction between zinc and oxygen. Include the half-reactions. What type of reaction is this? I know the reaction is 2Zn + O2 -> 2ZnO I am not really sure where to go from here.

*February 27, 2017*

**Bology**

Lysosome in plants-what organelles do you have experience working with? What skill set does it have?

*February 27, 2017*

**Physics**

A car drive straight of the edge of a cliff that is 54m high. The police note that the point of impact is 130m from the base of the cliff. How fast was the car travelling when it went off the cliff.

*February 27, 2017*

**History**

What are the similarities between Socialism and Marxism? For some reason, when I search this on google, only the differences pop up.

*February 27, 2017*

**History**

What year was socialism founded/ came into prominence? Was it 19th century SAme thing with Marxism?

*February 27, 2017*

**History**

Thank you

*February 27, 2017*

**History**

What century was capitalism founded

*February 27, 2017*

**physics**

The eye of a hurricane passes over Grand Bahama Island. It is moving in a direction 77.2 ? north of west with a speed of 49.0 km/h. Exactly 2.92 hours later, the course of the hurricane shifts due north, and its speed slows to 22.4 km/h, as shown. How far from Grand Bahama is ...

*February 27, 2017*

**Stats**

A normal distribution has a mean of 120 and a standard deviation of 20. What range of scores would form the middle 60%?

*February 27, 2017*

**Stats**

A normal distribution has a mean of 120 and a standard deviation of 20. What score corresponds to the 90th percentile?

*February 27, 2017*

**Stats**

A normal distribution has a mean of 120 and a standard deviation of 20. What score separates the top 40% of the scores from the rest?

*February 27, 2017*

**go math 5 gr**

ellen needs to buy 180 inches of ribbon to wrap a large present. the store sells ribbons only in whole yards. how many yards does ellen need to buy to have enough ribbon?

*February 27, 2017*

**Physics**

A ball (mass of 0.3kg) is suspended on a string that is attached to the ceiling. The ball is charged with an unknown charge q. Determine the magnitude of the charge on the ball if the electric field strength is 3000N/C, and the string forms an angle of ? = 20° as ...

*February 27, 2017*

**Social Studies**

D

*February 27, 2017*

**MATH help me pls :D**

Find the length of the missing leg of a right triangle given a leg of length 15 and a hypotenuse of length 17. Leave your answer in simplest radical form.

*February 27, 2017*

**World history**

Thanks.

*February 27, 2017*

**MINNESOTA STUDIES**

lol

*February 27, 2017*

**Math**

If the diameter of a circular pond is 50 m and the width is 2 m then what is the area of the pathway

*February 27, 2017*

**maths**

differentiate the cube root of (1+3xsquare)square.everytin over x

*February 27, 2017*

**physics**

(a) What do you understand by the term inductive reactance?

*February 27, 2017*

**Chemistry**

An organic compound on analysis gave C=57.8% and H=3.6% and rest of oxygen.The vapour density of the compound was found to be 83.Find the molecular formula of the compound?

*February 27, 2017*

**math**

use nCr on calculator N= # of items r= # items being chosen answer= 84 combinations

*February 27, 2017*

**Maths, triangle trigonometry **

The captain of a ship sailing along a bearing of 070oT observes two lighthouses in a line due North of himself. The ship continues on the same course for a further 5 km. Now, one of the lighthouses has a bearing of 280oT from the ship and the other has a bearing of 320oT from...

*February 26, 2017*

**Physics-Work, Energy, and Power**

A 56.9 kg sledder descends an 8.21-meter high hill, encountering a friction force of 11.7 N, Fill in the blanks and determine the speed of the sledder after traveling the 31.7 meters to the bottom of the hill. Top of the hill: KE=0J PE=_ W=_ Work=_ PE=0J KE=_ At the bottom of ...

*February 26, 2017*

**math NEED HELP ASAP**

The Royal Fruit Company produces two types of fruit drinks. The first type is 65% pure fruit juice, and the second type is 90% pure fruit juice. The company is attempting to produce a fruit drink that contains 75% pure fruit juice. How many pints of each of the two existing ...

*February 26, 2017*

**math **

A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 6% vinegar, and the second brand contains 11% vinegar. The chef wants to make 250 milliliters of a dressing that is 9% vinegar. How much of each brand should she use?

*February 26, 2017*

**Math**

A group of students were asked to select their preferred breakfast drink from among coffee, tea, and orange juice. The results of the survey are shown in the table along with information about whether the students are in high school (HS) or in college (C). Create a two-way ...

*February 26, 2017*

**physics**

Located 10 centimeters apart from each other are two charged particles. Both have equal mass. The second object has a charge that is twice as large as the charge on the first object. They experience a repulsive force of 95N due to the electrical interactions. What is the ...

*February 26, 2017*

**physics**

You push a charge of 0.1C through an electric field. Through this process, you do 48 J of work on the charged object. Determine the voltage between where you started and where you ended.

*February 26, 2017*

**physics**

At each corner of an equilateral triangle, there is a charge, as diagrammed below. The length of each side of the triangle is .4 meters. Find the net force acting upon q1, given the following values for each of the charges: q1 = ?2.00 ?C, q2 = 3.00 ?C, and q3 = 4.00 ?C.

*February 26, 2017*

**Algebra**

or maybe you just know without writing it out that 1 = 10^0 10 = 10^1 100 = 10^2 hundreds 1,000 = 10^3 thousands 10,000 = 10^4 = 100^2 100,000 = 10^5 1,000,000 = 10^6 millions .... 1,000,000,000 =10^9 billions ..... 1,000,000,000,000 = 10^12 trillions etc

*February 26, 2017*

**Algebra**

Form a quadratic statement from the given: Zeroes at 2 and 3, f(1)=12. f(x)=?

*February 26, 2017*

**Ethics**

In the treatment of terminally ill patients, is it logical to permit physicians to provide palliative sedation that is given with the intent of relieving suffering but that also can be reasonably expected to make a patient die more quickly while prohibiting physicians from ...

*February 26, 2017*

**physical sciences**

hearing rattles from a snake, a boy make two rapid displacements of magnitude 1.8m and 2.4m in sketches show how the two displacements might add up to give magnitude of

*February 26, 2017*

**Social Studies**

1.A, B , D 2. A 3. D 4. C

*February 26, 2017*

**Algebra**

A rectangular pen with one side along a river will be bounded by a fence on the other three sites. If 600m of fence are available, what the dimensions of the rectangle should be in order to enclose maximum area and how much this area is?

*February 26, 2017*

**Calc**

Suppose the integral from 2 to 6 of g of x, dx equals 12 and the integral from 5 to 6 of g of x, dx equals negative 3 , find the value of the integral from 2 to 5 of 3 times g of x, dx

*February 26, 2017*

**MATH NEEDS HELP NOWw**

Consider the sequence t1=1, t2=-1, and that tn=t(n-2)*(n-3)/(n-1), where n>2. Find the value of t1998. (1998 is the term, so is n, t1, and t2)

*February 26, 2017*

**maths**

does it say which 2 angles?

*February 26, 2017*

**math**

sum of angles of any polygon is 180*(n-2) where n is the number of sides in the polygon. 1800/180 = 10, 10+2= 12. there are 12 sides 1800/12 =150 degrees

*February 26, 2017*

**math**

a typist can type 70 words in 1 minute. then how many words can he type in 1.5 minutes?

*February 26, 2017*

**Math**

A: The variables x and y vary directly. When x is 3, y is 6. Find x when y = 2/3. B: The force acting on an object varies directly with its acceleration. A force of 25 newtons accelerates an object at 1.25 m/s. What is the acceleration of a 35 newton force? (some steps or ...

*February 26, 2017*

**Philosophy**

It actually dose not but thanks for not helping me

*February 25, 2017*

**Math**

1. pyramid 12*12 *12/3

*February 25, 2017*

**History**

It says to represent the characteristics of it so I didnt know if that meant I had to do something different

*February 25, 2017*

**History**

On one of my assignments it says to create a bubble chart that represents and explains the characteristics of 19th century capitalism and to provide examples Should i just make a bubble chart graphic organizer with a circle in the middle and other circles extending outwards ...

*February 25, 2017*

**History**

What are the preconditions for industrialization

*February 25, 2017*

**maths**

How to factorise 4(x+y)(3a-2b)+(6x+y)(2b-3 a)

*February 25, 2017*

**math**

pq is a tower standing vertically on the horizontal ground. from a, the angle of elevation of top p of the tower is 45°. on moving 50 m. up a slope of 15°, the angle of elevation becomes 75° from b. find height of the tower

*February 25, 2017*

**Math**

Janet Foster bought a computer and printer at Computerland. The printer had a $620 list price with a $100 trade discount and 2/10, n/30 terms. The computer had a $2,200 list price with a 25% trade discount but no cash discount. On the computer, Computerland offered Janet the ...

*February 24, 2017*

**Chemistry **

sulfuric acid can be prepared by a multistep process summarized as: 2 SO2 + O2 + 2 H2O--> 2 H2SO4 What mass of sulfuric acid could be produced daily by a process using 38 kg per day of sulfuric dioxide with a 70% conversion efficiency ("yield"), assuming that ...

*February 24, 2017*

**Chemistry **

How many grams of a solid mixture containing strontium chloride would one need to make 558 mL of a 0.100 M strontium chloride solution, if the solid mixture contains 58.6% strontium chloride by weight

*February 24, 2017*

**Algebra**

What is the solution and magnitude of the following problem: (x^4)-1=0 (x^3)+1=0 (x^3)-1=0 (x^6)-1=0 (x^6)+1=0

*February 24, 2017*

**Chemistry**

the correct answer is 3.375x10^-22 J. But i don't know how to get this answer correctly.

*February 24, 2017*

**Chemistry **

High-pressure sodium vapor lamps are used in street lighting. The two brightest lines in the sodium spectrum are at 589.00 and 589.59 nm. What is the diffrence in energy per photon of the radiations corresponding to these two lines?

*February 24, 2017*

**Calculus**

Find the derivative of the integral from x^3 to 5 of cosk/(k^2+2). My answer is ((-cos(x^3)(3x^2))/(x^6+2).

*February 24, 2017*

**Math**

Given: f(x) = 8 - 4x A. Find f(-2) B. Find x, when f(x) = 8 C. Graph the function. D. State the domain and range of the function. E. Use the graph to find x, when f(x) = 0. Show details on the graph. F. Use the graph to find f(x) when x = 3. Show details on the graph.

*February 24, 2017*

**Calculus**

Find the derivative of the integral from x to 6 of ln(1 + t^2). My answer is -ln(1+x^2).

*February 24, 2017*

**ELA AND HELP!!!!!!**

Hint: Is there one word that can be replaced by a person's name?

*February 24, 2017*

**Math **

Ed’s rental charges a flat fee of $5 plus $2 per hour to rent a pair of skates. A. Write an equation to model the cost of renting skates, y, for x hours. B. Graph the equation. Label the y-intercept. C. Use the graph to find the cost for renting the skates for 2 hours. ...

*February 24, 2017*

**English**

The title “Another Evening at the Club” is close in meaning to “Just Another Evening at the Club.” Given the events of the story, what is the significance of this meaning?

*February 24, 2017*

**Social Studies**

is it b

*February 24, 2017*

**math **

-3x 2 = 1/4 (2 raised to the power -3x = 1/4)

*February 24, 2017*

**American History**

Did the concept of race exist since the beginning of time?

*February 24, 2017*

**chemistry, science**

how many moles of he atoms are there in 0.02g of he?

*February 24, 2017*

**Math**

Given: f(x) = 8 - 4x A. Find f(-2) B. Find x, when f(x) = 8 C. Graph the function. D. State the domain and range of the function. E. Use the graph to find x, when f(x) = 0. Show details on the graph. F. Use the graph to find f(x) when x = 3. Show details on the graph.

*February 24, 2017*

**Math**

Given: f(X)= 8-4x A. Find f(-2) B. Find x, when f(x)= 8 C. Graph the function. D. State the domain and range of the function. E. Use the graph to find x, when f(x) = 0 . Show details on the graph. F. Use the graph to find f(x)when x = 3. Show details on the graph.

*February 23, 2017*

**Math**

Consider the sequence t1=1, t2=-1, and that tn-tn-2(n-3)/(n-1), where n>2. Find the value of t1998. (1998 is the term, so is n, t1 and t2)

*February 23, 2017*

**math**

there are 64 seventh graders at a middle school. This is 32% of the students at the school. The sixth graders comprise 38% of the school how many sixth graders attend the middle school

*February 23, 2017*

**math**

Maya has 4 1/2m of ribbon. She uses 1 3/4m to wrap a present and 1/3m to make a bow. How much ribbon is left?

*February 23, 2017*

**Ethics**

The World Medical Association (WMA) states that FGM does not violate the principles of medical ethics, if FGM is part of the cultural tradition where the physician is practicing medicine. True False I say false

*February 23, 2017*

**Math**

x y -2 -5 0 -1 1 1 2 3 A. Graph the ordered pairs. B. Is the function linear? Explain. C. Write a rule for the ordered pairs in terms of x and y. D. What is the value of y when x = 10?

*February 23, 2017*

**math**

geez - impatient much?

*February 23, 2017*

**Math**

5 thousand 22 tens and 9 ones equals what number

*February 23, 2017*

**Algebra**

Give the interval(s) on which the function f is positive if f is defined as: f(x)=x(5?x)(2x?3)

*February 23, 2017*

**physics**

A ball moving at a velocity of 10 meters/second has a momentum of 8.0 kilogram meters/second. What is its mass?

*February 23, 2017*

**Social studies**

Yalp is wrong. Listen to Ms. Sue

*February 23, 2017*

**Physics**

11469.9

*February 23, 2017*

**Social Studies**

Also Among the first laws passed by FDR was the Truth-in-Securities Act. How did it support his New Deal goals? A. The law’s purpose was to make sure farmers’ investments were safe. B. The law’s goal was to prevent another economic crash. C. The law was focused ...

*February 23, 2017*

**Social Studies**

Which of the following best summarizes Hoover’s and Roosevelt’s policies? A. Hoover was most concerned about stabilizing the banks, while Roosevelt chose to provide jobs. B. Hoover believed in providing public works and welfare, while Roosevelt wanted the people to ...

*February 23, 2017*

**Algebra **

Let f (x)= (x^2 + 3x - 4) and g(x)= (x + 4) a. Find f*g and state the domain b. Find f/g and state the domain

*February 23, 2017*

**Science**

The answers are 1.A 2.B 3.C 4.C 5.B 6.B 7.D 8.C 9.C 10.B 11.C 12.D 13.C

*February 23, 2017*

**Science**

is 1. correct

*February 23, 2017*

**Algebra **

Use the coordinates of the two points that show male life expectancies for 1980 and 2000 to write a linear function that models life expectancy. E (x), for men born in this community x years after 1960 Coordinates are 1960-66.8 1970-67.5 1980-69.9 1990-70.5 2000-74.1 2004-75.2

*February 23, 2017*