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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 ​feet, 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 ...

Social Studies
D

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

MINNESOTA STUDIES
lol

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.

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