# Posts by Charlie

Total # Posts: 468

**physics**

A hippo has a mass of 6000kg. When standing on 4 feet, how much pressure is exerted on the ground? Assume each foot has an area of 0.10 square meter. Show your work.

*February 6, 2017*

**maths**

Calculate the area of the following triangles, giving your answers to 2 decimal places: (a) The right-angled triangle with sides a=16, b=63, and c=65. (b) The triangle with angle ? = 40° and adjacent sides b=10 and c=20.

*November 18, 2016*

**Algebra**

There are 3 red chips and 2 green chips. You win the game if you take out all the chips of the same color. What is the probability you take all the green chips out?

*November 16, 2016*

**Algebra**

In a set of 6 numbers, {-2, -1, 0, 1, 2, 3}, what is the probability the product of any two numbers is zero?

*November 16, 2016*

**math**

A 5.35 kg steel block is spun around a motor at 36.5 rpm. The angular acceleration of the block is -2.14 rads/s^2 and it takes 1.79 s for the block to come to a complete stop. What is the angular displacement while the block slows to a stop?

*October 23, 2016*

**Statistics**

a ball rolls off a table and falls 0.80 m to the floor, landing with a speed of 4.5 m/s. 1. What was the initial speed of the ball? 2. What initial speed must the ball have if it is to land with a speed of 5.8 m/s? 3. What is the magnitude of the acceleration of the ball just ...

*October 9, 2016*

**logarithm functions**

use the properties of logarithms to expand the expression as sum, difference or multiple of logarithms. Simplify. a.log(x^3/2) b.log base4 16a

*September 11, 2016*

**math**

a board is 19ft 9inches long is cut into nine equal pieces to the nearest inch. how long is each piece? how many inches of board will be left over?

*July 21, 2016*

**math**

a+b=76 a-b=38 a/g=?

*May 21, 2016*

**Chemistry**

How would one work through this problem? -Calculate the number of liters of 1.25M solution that can be made from 6.400g of barium nitrate. - I know that it's just stoichiometry, but I'm confused. The formula for molarity is the number of moles of the solute divided by ...

*May 7, 2016*

**Chemistry**

What volume of coffee (pH =5.0) would be required to have .25 moles of H3O+ ions? (Hint: two step)

*April 25, 2016*

**Physics**

D.0

*March 8, 2016*

**Language arts**

Yes number two is correct.

*March 1, 2016*

**Chemistry**

Thank you so much.

*March 1, 2016*

**Chemistry**

I am sorry I think autocorrect changed it to that. It is supposed to so corrected no or reacted.

*March 1, 2016*

**Chemistry**

Some hydrogen is collected over water at 10 degrees C and 105.5 kPa pressure. The total volume of the sample was 1.93 L. Calculate the volume of the hydrogen or reacted to STP.

*March 1, 2016*

**educational tec connections academy**

I believe that A is a good thing, but is it really a rule to be used in an A.U.P? I think not, the answer is B.

*February 25, 2016*

**life orientation**

she should go through it cautiously and be smart about it. don't try to fix it then and there, do it gradually so she can get it done alright and efficiently. don't try to push it

*February 25, 2016*

**life science,mathematics,agricultural,tourism**

whatever study field your heart desires. what do you think will make you happy to wake up to in the morning. what will make you love your job and your career choice? if you can see yourself happy with whatever it is then GO FOR IT :D

*February 25, 2016*

**10 drivers ed questions?**

if you look up the drivers manual online, you should find it.

*February 25, 2016*

**10 drivers ed questions?**

look in your manual, all your answers should e there. That's how I found all my answers when I took driver's ed.

*February 25, 2016*

**history,geography,life science,maths literacy**

why don't you do it yourself? nobody is going to do your work for you!

*February 25, 2016*

**Geometry**

Thanks!

*February 25, 2016*

**Geometry**

Find the area of each rectangle wit the given base and height... A=lw 1) 4ft, 4in 2) 30in, 4yd 3) 2ft 3in, 6in 4) 40cm, 2m

*February 25, 2016*

**Physics,geo,life scince,pure maths,**

how about you learn some basic grammar first :)

*February 25, 2016*

**Geometry**

WHICH STATEMENT IS TRUE? a) a right angle has a complement b)and obtuse angle has a complement c)the supplement of a right angle is a right angle d) every angle has a supplement****

*February 24, 2016*

**Math**

Can you show me how to translate 9^x six units to te right? Thanks

*February 24, 2016*

**math**

Erica started her own pizza restaurant. She offers one type of crust, one kind of sauce and 6 different toppings: sausage, pepperoni, mushroom, onions, green peppers and tomatoes. 1. How many different two-topping pizzas can she make? 2. Erica decides to offer three kinds of ...

*February 20, 2016*

**math**

steve your n idiot

*February 20, 2016*

**math**

thanks

*February 20, 2016*

**math**

I need 1 paragraph explaing where math came from for my uncle

*February 20, 2016*

**j**

5/7=40/X (cross multiply) 5X=280 X=56 B

*January 31, 2016*

**Chemistry**

look at any mole, what is the ratio of particles of the numerator compared to the number of particles in the denominator?

*January 31, 2016*

**Can someone help me on imperialism???**

I had no assigned materials Ms sue, This was it, i was told to research it and figure it out. i just needed a little bit of help. Thank you reed for your help!

*January 21, 2016*

**Can someone help me on imperialism???**

No choices, this is study material for a project that's due next week, these are questions to help me study for it.

*January 21, 2016*

**Can someone help me on imperialism???**

I need help identifying this, can you give me some help? Identify the situation regarding Imperialism. Identify what Americans thought about Imperialism or Isolationism.

*January 21, 2016*

**Check 2 of my world history answers??**

i didn't repost them.. i got it now

*January 21, 2016*

**Check 2 of my world history answers??**

Thanks for the reading suggestion Damon, ill be sure to read it.

*January 21, 2016*

**Check 2 of my world history answers??**

star* by my answer 2. All of the following are considered causes of the Great Depression EXCEPT Problems in Agriculture** Uneven distribution of wealth Lack of stock available 7. Hoover believed in which of the following strategies to end the Great Depression? Volunteerism and...

*January 21, 2016*

**PLEASE CHECK MY WORLD HISTORY ANSWERS**

star* by my answers 1. This man became President after the 1928 election and became the "face" of the Great Depression in the United States. Theodore Roosevelt Woodrow Wilson Herbert Hoover** 2. All of the following are considered causes of the Great Depression ...

*January 21, 2016*

**Check my world history answers??**

star* by my answers 1. This man became President after the 1928 election and became the "face" of the Great Depression in the United States. Theodore Roosevelt Woodrow Wilson Herbert Hoover** 2. All of the following are considered causes of the Great Depression ...

*January 21, 2016*

**Algebra 2**

Thank you.

*January 18, 2016*

**Algebra 2**

Two times a number subtracted from its square equals 143. Find the number(s).

*January 18, 2016*

**World history/ Latin America**

1. The policy by which strong nations extend their control and influence over weaker territories is called? Socialism Imperialism * Populism 2. This theory justified the use of racial, national and cultural superiority that nations used to build their empires? Populism * ...

*January 17, 2016*

**World history/ Latin America**

sorry let me put my answers, i put the wrong one.

*January 17, 2016*

**World history/ Latin America**

Check my answers please?? i have a star by my answer. 1. The policy by which strong nations extend their control and influence over weaker territories is called? Socialism Imperialism Populism 2. This theory justified the use of racial, national and cultural superiority that ...

*January 17, 2016*

**maths**

there are 12 sweets in a bag. 7 of the sweets are strawberry flavou. 5 of the sweets are lime flavour. harriet takes 2 sweets at random work out the probability that she takes at least one strawberry sweet.

*January 14, 2016*

**Kinesiology**

What is your opinion about companies that charge higher insurance premiums for their employees who have health risk behaviors (i.e Obese, Tobacco Users, etc.)?

*December 9, 2015*

**History**

8. How did Native Americans and whites differ in their views on land use? * Native Americans saw themselves as part of nature and considered it sacred, while whites saw it as a natural resource used to produce wealth. Indian cultures had no regard for preserving land and were ...

*December 1, 2015*

**History**

number 5 is Promontory, Utah. number 6 would be coal

*December 1, 2015*

**History**

number 5 Sacramento, California ?? number 6 gold?

*December 1, 2015*

**History**

i check one for number 2. theres starts at the end of questions too

*December 1, 2015*

**History**

check my answers??? 1. During Reconstruction, Southern agriculture thrived because it became more diverse and expanded with the diminishing demand for cotton and tobacco. * True* or False 2. Identify the factor which helped limit the economic recovery of the South following ...

*December 1, 2015*

**math packet**

Solve this equation for x. 0.5(5-7x) = 8-(4x+6)

*November 20, 2015*

**algebra**

Solve this equation for x. 0.5(5-7x) = 8-(4x+6)

*November 18, 2015*

**Social Studies**

do you have the answers to this

*November 10, 2015*

**Social Studies ( Check my answer)**

do you know the rest of the answers for this quiz?

*November 9, 2015*

**maths**

Thabo is 5years older than Amy,in 7years time Amy will be 3/4`s of thabo`s age. How old is Amy now?

*September 29, 2015*

**Algebra**

Sorry I messed up it was actually -7 divided by 14/3

*September 18, 2015*

**Algebra**

1. Find the quotient -7 divided by 14/13 A.-2/3 B.-98/3 C.-1/2 D.-3/2

*September 18, 2015*

**Computer Science Principles**

I need to know what's wrong with my code and it's supposed to be in the Next-Line blocking style. import java.util.Scanner; public class AreaOfCircle{public static void main(String[] args) { double PI = 3.14159;double get_this; double v; Scanner keyboard = new Scanner(...

*September 13, 2015*

**Algebra**

Thank you so much.

*September 8, 2015*

**Algebra**

An algebra teacher is writing a test. There will be two types of questions: multiple-choice and open-ended. The multiple-choice questions take 3 minutes to complete and the open-ended questions take 12 minutes to complete. There must be at least 3 open-ended questions, at ...

*September 8, 2015*

**Math**

If a 20 inch pully runs at 350rpms, what size does the second pully have to be to run at 3500rpms? I Don't remember the equation all I am looking for is the equation please

*September 2, 2015*

**math**

how does 3x(x-4)+5=12 = x=6+sq rt 57-3 or x=6-sq rt 57/3

*June 3, 2015*

**math**

What is the solution to the following equation? 3x(x-4)+5=12

*May 31, 2015*

**math packet**

how do I solve the following: 2x(x-3)+3=4

*May 25, 2015*

**utu secondary school papuanew guinea**

A given mass of air has a volume of 6.0l at 1 atom.what volume will it occupy at 190mm hg if the temperature does not change?

*March 3, 2015*

**Math lit, geography, life sciences and agriculture**

Hi i am still in matric and i don't know myb i cn be a chef under this subj...or an jenourlist

*February 11, 2015*

**accounting**

Greco Resort Adjusted Trial Balance August 31, 2007 Debit Credit Cash $ 19,600 Accounts Receivable 800 Prepaid Insurance 3,375 Supplies 450 Land 20,000 Building 120,000 Accumulated Depreciation- Building 1,080 Equipment 16,000 Accumulated Depreciation—Equipment 360 ...

*February 5, 2015*

**Physics**

An object fired at an angle of 31.9° above the horizontal takes 2.55 s to travel the last 15.5 m of its vertical distance and the last 10.5 m of its horizontal distance. With what speed was the object launched? (Note: This problem does not stipulate that the initial and ...

*February 1, 2015*

**Math**

Check my math please... is the probability of three events with the following individual probs: 1/161x10/100x20/100=0.00012; and that is a 0.012% (1.2%) chance? Thanks

*January 24, 2015*

**physics**

Fall time under g is sqrt 2h/g. Can someone give a derivation from the equations of motion please? Thanks.

*December 17, 2014*

**Physics**

1) Planet Zero has a mass of 5.0*10^23 kg and a radius of 2.0*10^6 meters. What is the acceleration of gravity on planet zero? 2)Phobos, a satellite of Mars, has a radius of 11km and a mass of 10^16 kg. Its a bit lumpy, but let's assume its spherical to get a doable ...

*December 6, 2014*

**Physics**

1) Planet Zero has a mass of 5.0*10^23 kg and a radius of 2.0*10^6 meters. What is the acceleration of gravity on planet zero? 2)Phobos, a satellite of Mars, has a radius of 11km and a mass of 10^16 kg. Its a bit lumpy, but let's assume its spherical to get a doable ...

*December 6, 2014*

**Physics**

1) Determine the force of gravitational attraction between the earth(m=5.98*10^24kg) and a 70-kg physics student if the student is in an airplane at 4.950 meters above the earth's surface.

*December 6, 2014*

**algebra**

a grocery store has 116 bags of marshmallows. over 6 months, it sells 8 bags of marshmallows per month. how many marshmallows are in inventory at the end of 6 months?

*December 2, 2014*

**algebra**

How do you find the unit rate for ....861 bagels divided by 3 days

*November 20, 2014*

**math**

A street light is at the top of a 16.0 ft. tall pole. A man 5.9 ft tall walks away from the pole with a speed of 5.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 47 feet from the pole?

*November 12, 2014*

**math**

Water is leaking out of an inverted conical tank at a rate of 6700 cubic centimeters per minute at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 meters and the diameter at the top is 3.5 meters. If the water level is rising at...

*November 12, 2014*

**CHEMISTRY**

V1P1/T1 = V2P2/T2 Temp in Kelvin and assuming room temp of 25C(298K) 7.5×150/293 = V2x1/298 V2 = 1144L Remeber to round your answer to 2 sig figs: 1.0 x 10^3

*November 6, 2014*

**can't figure it out**

let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=___

*October 30, 2014*

**Physics**

A father pulls his son, whose mass is 26.7 kg and who is sitting on a swing with ropes of length 3.27 m, backward until the ropes make an angle of 35.6° with respect to the vertical. He then releases his son from rest. What is the speed of the son at the bottom of the ...

*October 21, 2014*

**Physics**

A father pulls his son, whose mass is 26.7 kg and who is sitting on a swing with ropes of length 3.27 m, backward until the ropes make an angle of 35.6° with respect to the vertical. He then releases his son from rest. What is the speed of the son at the bottom of the ...

*October 21, 2014*

**Physics**

A 25.0-g metal cylinder is placed on a turntable, with its center 70 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is μs = 0.71. A thin, massless string of length 70 cm connects the center of ...

*October 7, 2014*

**Physics**

whats the answer?

*October 6, 2014*

**Physics**

what's the answer?

*October 6, 2014*

**Physics**

Calculate the dot product Ā·Ê(where Ê = Ē/E ~ is the unit vector in the direction of Ē ) and plot both Ā and Ê, showing how Ā·Ê is the projection of Ā on Ê. Ā= −4ˆi + 3ˆj Ē= 12...

*September 18, 2014*

**math**

what is the tenth term

*September 5, 2014*

**math packet**

11 nickles and 5 dimes

*September 1, 2014*

**math**

WOW! Thanks, I had trouble setting up the equation to solve. But it makes sense, like when solving an interest problem.

*July 8, 2014*

**math**

It is important for Bob to have a gross salary in his fifth year of at least $100,000. He is promised salary increases of 3 percent per year in the second and third years and 5 percent thereafter. What must be his starting salary be to achieve his goal? My original answer was...

*July 8, 2014*

**math**

Thank you.That one had me stumped, but the way you explained it makes sense. 0.4%

*July 8, 2014*

**math**

In order for a spacecraft to reach Earth's orbital velocity, it must achieve a speed of 17,500 mph in 610 seconds after its first stage burnout where it should have achieved a speed of 1530 mph. What percent increase in speed per second is necessary after first stage in ...

*July 8, 2014*

**math**

Got it. 8 quarters, 17 dimes, and 35 nickels. Thanks for the equations, that was what I had trouble setting up.

*July 7, 2014*

**math**

There are 60 coins in a box containing only nickels, dimes, and quarters. If there is one more than twice as many dimes as quarters, and the total value of all dimes is five cents less than the total value of all nickels, how many of each denomination are in the box?

*July 7, 2014*

**physics**

Damon's post is correct.

*June 4, 2014*

**science**

please help I need these too

*May 6, 2014*

**Chem**

Please Help

*April 6, 2014*

**Chem**

The following questions refer to the following system: A total of 30.0 mL of a .10M solution of a monophonic acid (Ka = 1.0 x 10 ^-5) is titrated with .20M sodium hydroxide solution. 1) Before the titration begins, the pH of the solution is about A) 2 B) 5 C) 7 D) 9 E) 12 2) ...

*April 6, 2014*