# Posts by Anonymous

Total # Posts: 107,853

**science **

describe the inner planets.

**math**

How do you know its a right angle when the answer is 34 i thought it has to be 90?

**art**

i need help for answer please!!! ;)

**Math**

The probabilities for randomly picking out marbles from a jar are given below. Green: 0.3 Blue: 0.2 Red: 0.2 Yellow: 0.3 What is the probability of picking out a marble that is not green and not yellow?

**history**

disagree on the first, agree on the second.

**Equations with Fractions**

4/5 - 3/10 = 8/10-3/10 = 5/10 = 1/2 so 6 gallons is half a tank :)

**Biology **

Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

**Calculus**

what does y = e^.5 x look like? at x = 0, y =e^0 = 1 at x = .1, y .= e^.05 = 1.05 at x = .2 y = 1.11 at x = ln(3) = 1.098 = 1.1 y = e^.5 ln (3) = e^ln (sqrt 3) = 1.73 well, y goes from 1 at x = 0 to y = 1.73 at x =1.1l so it looks like washers but the sensible way might be to ...

**Biology **

Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

**calculus- optimization**

I will work on 1/4 of the circle y = height x = half of width r^2 = x^2 + y^2 = 4 A = x y so x = A/y A^2/y^2 + y^2 = 4 A^2 + y^4 = 4 y^2 let p=y^2 p^2 -4p = -A^2 p^2 - 4p + 4 = -A^2+4 (p-2)^2 = - (A^2-4) p = 2 so y = sqrt 2 and A = 2 and x = 2/sqrt2 = sqrt 2 so height= y = ...

**Math**

A rectangle has the area of 25 square feet. A similar rectangle has an area of 240 square feet. What is the ratio of the area of these similiar triangles?

**Science**

The combined resistance of two identical resistors connected in series is 8 ohm. Their combined resistance in a parallel arrangement will be?

**Biology **

Please help with these questions question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing culture of Escherichia coli bacteria. What could explain the gradual consumption of oxygen, even though no glucose has yet been added to the ...

**life orientation**

explain in a short paragraph what can trigger spectator aggression in sport

**thinking works math**

Part 'A' answer: Show all of your calculations and label your answer. *

**Phyiscs**

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 4.2m, 3.0m and 0.6m?

**Science 6**

I think you are right.

**Phyiscs**

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

**Physics **

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 4.2m, 3.0m and 0.6m?

**Science **

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

**Phyiscs**

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

**Related Rates**

Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 25 feet high? Recall that...

**Physics**

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

**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).

**Chemistry **

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

**Math - Linear Approximation **

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

**Related Rates**

Nevermind, I got it. it's 7.21

**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?

**science**

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

**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.

**Math - implicit differentiation**

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

**Physics**

12.8cm

**physics**

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

**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 ...

**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.

**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 ...

**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...

**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.

**Bology**

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

**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.

**History**

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

**History**

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

**History**

Thank you

**History**

What century was capitalism founded

**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 ...

**Stats**

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

**Stats**

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

**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?

**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?

**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 ...

**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.

**World history**

Thanks.

**Social Studies**

thx samantha!!! and btw atrue is wrong

**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

**maths**

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

**physics**

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

**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?

**math**

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

**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...

**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 ...

**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 ...

**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?

**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 ...

**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 ...

**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.

**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.

**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

**Algebra**

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

**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 ...

**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

**maths**

834

**Social Studies**

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

**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?

**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

**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)

**maths**

does it say which 2 angles?

**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

**math**

105

**math**

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

**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 ...

**Philosophy**

It actually dose not but thanks for not helping me

**Math**

1. pyramid 12*12 *12/3

**History**

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

**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 ...

**History**

What are the preconditions for industrialization

**maths**

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

**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

**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 ...

**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 ...

**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

**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

**8th Social studies**

The answer is on brainly.

**Chemistry**

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

**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?

**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).

**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.

**Calculus**

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

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

I was thinking Judge, so A.