# Posts by ANONYMOUS

Total # Posts: 106,655

**Physics **

Let F1=10i-15j-20k,F2=6i+8j-12k. Find their dot product and the angle between those two vectors

*March 22, 2017*

**Chem**

How does water's shape make it a good solvent

*March 22, 2017*

**Math1**

P=6438 P=4% is correct

*March 22, 2017*

**Ethics**

Is there an ethical right to health care? If so, what are the practical consequences of concluding that this ethical right exists? I believe so but not too sure

*March 22, 2017*

**Math - Rate Of Change**

What does it take to win a tug of war? PUNCHLINE • Algebra • Book A 2006 March Mathworks

*March 22, 2017*

**la **

which of the following is considered plagiarism A. adding footnotes B.presenting your own opinion C.including a works cited page D.directly quoting without providing the source

*March 22, 2017*

**Social Studies**

It was D

*March 22, 2017*

**Social Studies**

Thank you

*March 22, 2017*

**Social Studies**

Or D

*March 22, 2017*

**Social Studies**

Which of the following events led to the Korean War? A. the invasion of Japan into Korea B. the sending of UN forces into Korea to assist South Korea C. the formation of the Demilitarized Zone D. the division of Korea between the Soviets and Americans I think B???

*March 22, 2017*

**Physics **

Find the centripetal acceleration of a car that rounds an 80 m radius curve at 10 m/s.

*March 22, 2017*

**math real and complex numbers lesson**

(7,-9)+(3,5)

*March 22, 2017*

**Science**

Two students discover that 500g of water occupies a volume of 50mL. Is this result correct? Explain your answer.

*March 22, 2017*

**Math**

You can register a pickup truck as a passenger vehicle if the truck is not used for commercial purposes and the weight of the truck with its contents does not exceed 8500 pounds. Your pickup truck weighs 4200 pounds. Write an inequality to represent the numer of pounds your ...

*March 22, 2017*

**Math**

If you have 2 balls in your mouth, and 3 men come in. How much balls do you have in your mouth?

*March 22, 2017*

**Calculus - Optomization Problem**

The volume of the largest right circular cone that you can inscribe in a sphere of radius r equals _______ (Your answer will be an expression in r.)

*March 21, 2017*

**Science**

Two students discover that 500g of water occupies a volume of 50mL. Is this result correct? Explain your answer.

*March 21, 2017*

**History**

When the ghetto closed in, what did it mean for the Jew? I dont undestand this question

*March 21, 2017*

**grammar**

If I enjoy the cruise, and if I have enough money, I shall buy a yacht on which I shall continue to party until I drop - what kind of sentence is this

*March 21, 2017*

**Calculus**

The model for the velocity of a shuttle, from liftoff at t = 0 s until the solid rocket boosters were jettisoned at t = 50.2 s, is given by v(t)=0.001495833t^3?0.089395t^2+18.86t?0.52 (in feet per second). Using this model, estimate the absolute maximum value and absolute ...

*March 21, 2017*

**Math**

A fence 3 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

*March 21, 2017*

**Maths **

There were some people on the bus. At the first stop 19 people got off and 17 people got in. Now there are 63 people inside the bus. How many were there at the start? We have to find THREE ways I found Two : 1) 19-17 = 2 63 + 2 = 65 2). 63 - 17 = 46 46 + 19 = 65 I need help ...

*March 21, 2017*

**geometry**

A garden is in the shape of a rectangle 26 feet long and 35 feet wide. If the fencing costs $5 a foot, what will it cost to place fencing around the perimeter of the garden?

*March 21, 2017*

**Maths**

1^=1 2^=8 3^=27 4^=64 4/100 =1/25

*March 21, 2017*

**Maths**

By picking a natural number randomly up-to 100.find the probability of the number being a perfect cube?

*March 21, 2017*

**math**

a bus ride costs $1.50. A 30-day bus pass costs $36. Write an equation to represent the number of bus rides you would need to take for the bus pass to a better deal.

*March 21, 2017*

**math**

Given suitable examples of sets A,B,C,show that: A?B=A?C, B?C A?B=A?C, B?C

*March 21, 2017*

**Algebra**

The value of a boat is $21,200 It loses 6% of its value every year. Find the approximate monthly percent decrease in value. Round your answer to the nearest hundredth of a percent.

*March 20, 2017*

**Math**

A swimming pool holds 27460L of water. How long will it take to fill the pool at a rate of 50L/min?

*March 20, 2017*

**math**

You have the numbers 1- 10 in a bag.You draw a slip at random and draw another without replacing the first. Find the probability that both numbers are odd.

*March 20, 2017*

**Math**

2/5 of the 40 students in class are girls. 1/4 of the girls wear glasses. How many girls do not wear glasses?

*March 20, 2017*

**Trig**

what are the intercepts of the graph of f(x)=4cos^2 -3 on the interval [0, 2pi]?

*March 20, 2017*

**Social Studies**

I just rechecked and all the correct answers are C,D,A

*March 20, 2017*

**Social Studies**

Thank you very much Ms. Sue for responding :)!! Are the whole answers 1. A 2. D 3. A ?

*March 20, 2017*

**Social Studies**

Is 3. A and 1. B?

*March 20, 2017*

**Social Studies**

Hi I was just wondering if anyone could check my answers, Thank you!! 1. Unstable government holds back economic development most in a. Namibia b. Botswana c. Somalia d. South Africa*** 2. What was the effect of diversity in Dafur? a. NGOs b. Apartheid c. Nationalism d. ...

*March 20, 2017*

**math**

Geo uaually drinks 36 ounces of water per day. He read that he should drink 64 ounces of water per day. If he starts drinking 64 ounces, what is the percent increase? Round to the nearest percent.

*March 20, 2017*

**Math**

Find the equation of the ellipse having axes along the coordinate axes and passing through the points (4 ,3), (-1,4).

*March 20, 2017*

**Math**

Determine the value of a and b, so that the points (a , b, 3 ) , (2 ,0,-1), (1 , -1 ,3) are collinear.

*March 20, 2017*

**science**

A gas sample has a volume of 150ml when the pressure is 175kPa. If the temperature and amount of gas remains constant, what volume will the gas sample occupy at a pressure of 120 kPa

*March 20, 2017*

**Physics/Mechanics**

A particle A of mass 150g lies at rest on a smooth horizontal surface. A second particle B of mass 100g is projected along the surface with a speed of u m/s and collides directly with A. On collision the masses coalesce and moves on with a speed of 4 m.s . find the value of u ...

*March 20, 2017*

**MATHEMATICS**

at a farmers market you buy 4 lbs of tomatoes and 2 lbs. of sweet potatoes.

*March 20, 2017*

**Chemistry**

Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level n = 4 to the level n = 1.v

*March 20, 2017*

**Physics**

What is the direction of the displacement of a person who walks 10 km at 37 degrees south of east, then 14 km due west?

*March 19, 2017*

**math**

?_0^1??_1^2??(x^2+y^2)dxdy?using simpson's one third rule

*March 19, 2017*

**Trigonometry**

prove (sinx-tanx)^2=(tan^2x)(cosx-1)^2

*March 19, 2017*

**math**

One number is greater than another by 40/11. If the smaller number is less than 47/22 by 1/2, find the numbers.

*March 19, 2017*

**Math**

There was a sample of 550 milligrams of a radioactive substance to start a study. Since then, the sample has decayed by 5.2% each year. Let t be the number of years since the start of the study. Let y be the mass of the sample in milligrams. Write an exponential function ...

*March 19, 2017*

**math**

In a quadrilateral ABCD, AB || DC and AD||BC . Find the perimeter of ?COD if the diagonals of the quadrilateral intersect each other at pointOand AC = 20 in, BD = 20 in, AB = 13 in.

*March 19, 2017*

**Math**

One of the angles of a parallelogram is 36° greater then another one. Find the angles of the parallelogram.

*March 19, 2017*

**chemistry**

. What is the pH of a solution in which 15 mL of 0.10 M NaOH is added to 25 mL of 0.10 M HCl?

*March 19, 2017*

**micro economics theory 2**

a watch making firm operating in a competitive market.given by c= 100+ q2., where q is the level of output & c is total cost. a.the price of watches is birr is 60, how many watches produce to maximize profit? b.what will your profit level be? c.at what minimum price will you ...

*March 19, 2017*

**iqra**

. The equation for a demand curve has been estimated to be Q = 100 - 10P + 0.5Y, where Q is quantity, P is price, and Y is income. Assume P = 7 and Y = 50. a. Interpret the equation. b. At a price of 7, what is price elasticity? c. At an income level of 50, what is income ...

*March 19, 2017*

**Chemistry**

What mass of ammonia is necessary to produce 500 kJ of heat? 4 NH3(g) + 5 O2(g) ? 4 NO(g) + 6 H2O(g) ?rH = -906 kJ mol-1

*March 18, 2017*

**Science**

Mass of iron cube having edge length 1.8m is 70g.Find it's density.

*March 18, 2017*

**Human resource**

Why absolutely not?

*March 18, 2017*

**Human resource**

Suppose you are a staff nurse in a hospital that uses an incentive compensation system. Do you have an obligation to disclose the nature of the compensation arrangement to patients? if so, how should this information be communicating, and by whom?

*March 18, 2017*

**Educational Technology**

Of the following websites, the least trustworthy is the one that: A: Has the author's name and the current year as the date the site was posted. B: Has in-depth information and has a .gov URL. C: Has photographs and a copyright date of 1997. D: Has a company logo and the ...

*March 18, 2017*

**chemistry**

8/1=?1/8=8=1/8

*March 18, 2017*

**chemistry **

Under the same condition temperature and pressure hydrogen diffuses 8 times as fast as gas y calculate the rmm of gas y the rmm of h=2

*March 18, 2017*

**Chemistry**

O = 16 g/mol Mg = 24 g/mol so mass MgO/mass Mg = (24+16)/24 mass MgO = 24 (24+16)/24 = 40 grams

*March 18, 2017*

**physics**

(1/2) k x^2 = (1/2)(144)(.01) Joules

*March 18, 2017*

**Algebra**

Difference of two ninbers is 5 and difference of thier reciprocal is 1/10 find the numbers. Answer: X-Y=5 X=Y+5 1/X - 1/Y = 10 1/Y+5 - 1/Y =10 LCM ....

*March 17, 2017*

**Math**

7m long flagstaff is fixed on tower standing on horizontal plain . Frm a point on the ground angle of elevation of top and bottom of flag staff are 60 and 40 find height of tower

*March 17, 2017*

**chemistry**

Calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10 M Na2CO3. (Ka = 4.3 x10-7)

*March 17, 2017*

**Math - Trigonometry**

When calculating the lengths for a square based pyramid, is there a way to calculate the length from a point to the point opposite of it, given the side length and height? Thanks in advanced.

*March 17, 2017*

**Physics**

A wire runs left to right and carries a current in the direction shown. What is the direction of the magnetic field at point Z?

*March 17, 2017*

**Physics**

A positive charge moving up enters a magnetic field pointing out of the screen. What is the direction of the magnetic force on the charge? up down right left

*March 17, 2017*

**Physics**

direction of the magnetic field?

*March 17, 2017*

**Physics**

What must be known to determine the direction of the magnetic force on a charge? the type of the charge the amount of the charge the direction of the magnetic field the velocity of the charge the strength of the magnetic field

*March 17, 2017*

**Physics**

Here are the choices: 0.01 T 0.05 T 0.1 T 0.2 T

*March 17, 2017*

**Physics**

that's not one of the choices

*March 17, 2017*

**Physics**

The magnetic field 0.02 m from a wire is 0.1 T. What is the magnitude of the magnetic field 0.01 m from the same wire?

*March 17, 2017*

**Language Arts**

Thank you!!

*March 17, 2017*

**Language Arts**

If I had to change my answer I would think 1 is C.

*March 17, 2017*

**Language Arts**

The Tide Rises, the Tide Falls by Henry Wadsworth Longfellow The tide rises, the tide falls, The twilight darkens, the curlew calls; Along the sea-sands damp and brown The traveller hastens toward the town, And the tide rises, the tide falls. Darkness settles on roofs and ...

*March 17, 2017*

**Language Arts**

Thank you!

*March 17, 2017*

**Language Arts**

1. Which of the following sentences has correct subject-verb agreement? A. A scarf or a hat keep you warm in the winter. B. Either Grandma or your brother pick your birthday gifts each year. C. Stacey and her sisters go to the beach every summer.** D. A dog or a cat are a good...

*March 17, 2017*

**Language Arts**

Thank you!!

*March 17, 2017*

**Language Arts**

1. what is the best way to correct the error in this sentence? Neither Tim nor Kristina go to the movies often A.delete the conjunction B.Change go to attend C.Change the verb to goes** D.Change neither to either 2. Which sentence below contains a dependant clause ? A. I know ...

*March 17, 2017*

**Math - Trigonometry**

A, B and C are three towns, the bearing of B and C from A being 295° and 205°, and their distances from A are 280km and 800km respectively. Find the bearing of C from B to the nearest minute.

*March 17, 2017*

**Math - Trigonometry**

Standing on top of a building 42 m high, an observer sights two objects at P and Q on opposite sides of the building. The angles of depression from the observer to P and Q are 23° 18' and 35° 33' respectively. What is the distance between P and Q to the nearest...

*March 17, 2017*

**Math - Trigonometry**

Ok, I know how to do this question, but I just don't get the apostrophe after 15. Supposedly, it means seconds but I don't know what that has to do with this.

*March 17, 2017*

**Math - Trigonometry**

The diagonal of a rectangle of width 3.8, makes an angle of 32° 15' with each of the longer sides. Find the length of the diagonal, and the length of the rectangle. Im not sure how to picture/draw the shape, which in term will tell me if it is cos, sin or tan. Also ...

*March 17, 2017*

**Math**

area of a rectangle is length times width and 3/4 mile is width

*March 17, 2017*

**physical science**

2.0x10^19-protons is net electric charge since electrons are negative and protons are positive.Is the protons given also?

*March 17, 2017*

**math**

2/3=4/6 and 1/6=1 drop

*March 17, 2017*

**math**

in cooking 1 drop equal 1/6 of a dash. if a recipe calls for 2/3 of a dash, how many drops would that be.

*March 17, 2017*

**Math**

half of 4 is 2 and 4 1/2 is 2 1/4

*March 17, 2017*

**Math**

What is half of 4 and 4 1/2

*March 17, 2017*

**English**

dancing is an action verb not an adjective. Dance could be a noun or adjective depending what is used, so the first one is correct since its describing classes.

*March 17, 2017*

**world history**

how was the roman empire latinized? how did roman culture and politics spread?

*March 16, 2017*

**Math**

I have a rectangle with a semicircle on each end.the area of the rectangle is 5500 sqare meters. What is the perimeter of the track

*March 16, 2017*

**economics**

explain the role of moral considerations in policy selections

*March 16, 2017*

**Math**

I need some help on this function rule question please. 8.) Find the function rule. x: -2 -1 0 1 2 y: 9 4 -1 -6 -11 I'm having a really hard time figuring this out. Thanks to anyone that helps:)

*March 16, 2017*

**LA**

which line in the river poem contains a simile

*March 16, 2017*

**Chemistry**

You dissolve 2.35 g of sodium carbonate (Na2CO3) in sufficient water to produce a final solution volume of 100.0 mL. Assuming all of the solid dissolves, calculate the solution pH.

*March 16, 2017*

**Calculus**

How do you use u-substitution with 20sin(x^2/35)?

*March 16, 2017*

**Maths**

A car travels 240 km in 2 hours. How long will it take to travel 600 km at the same speed?

*March 16, 2017*

**Physics**

Given that charge of the electron is 1.6 x10^-19 C,What is the energy gained by the cathode ray particle when a voltage of 800 volts is applied between the electrodes of a cathode ray tube

*March 16, 2017*