Sunday

March 1, 2015

March 1, 2015

Total # Posts: 2,897

**physics**

Assuming that 68.1% of the Earth's surface is covered with water at average depth of 1.21 mi. ,estimate the mass of the water on Earth. One mile is 1.609 km and the radius of the earth is 6.37 x 10^6 m. Answer in units of kg
*June 11, 2011*

**Chemistry**

How many grams of Mg are needed to react completely with 3.80 L of a 2.50 M HF solution? Mg + 2HF MgF2 + H2
*June 9, 2011*

**Elementary Statistics**

42/(39+42)= 51.85%
*June 8, 2011*

**Advanced Calculus 2**

Construct an example of two Riemann integrable functions whose composition is not Riemann integrable.
*June 8, 2011*

**Science**

Sorry! I meant what different types if energy!
*June 5, 2011*

**Science**

What are the different types of motion? I always get those mixed up and my older sister says that we will be studying that next year. Thanks for the help!
*June 5, 2011*

**Health**

thank u for answering, but can u please answer my two questions that I had asked?
*June 4, 2011*

**Health**

wht about crack cocaine and u never said that cocaine could be injected on the other post
*June 4, 2011*

**Health**

I did, so none of them can be injected or wht?
*June 4, 2011*

**Health**

Is Cocaine swallowed, smoked, snorted, or injected? Is Crack Cocaine swallowed, smoked, or injected?
*June 4, 2011*

**Health**

ik i did but idk
*June 4, 2011*

**Health**

which one is a picture of a person smoking Cocaine not Crack Cocaine
*June 4, 2011*

**Health**

Ms. Sue I need help finding a Picture of someone smoking Cocaine can u find a picture for me please?
*June 4, 2011*

**Health**

ok, so is cocaine swallowed, smoked, snorted, injected or what? AND THEN IS Crack Cocaine swallowed, smoked, snorted, injected or wht?
*June 4, 2011*

**Health**

I can't find the answer to my two questions.. What are the answers, Ms. Sue?
*June 4, 2011*

**Health**

Is Cocaine swallowed, smoked, snorted, injected? Is Crack Cocaine swallowed, smoked, snorted, injected?
*June 4, 2011*

**math**

A cat owner wants to put equal amounts of food into dishes. If she has 3as a hole number. 2 over 3 as a fraction unces of cat food how many ounces will each food dish get
*June 1, 2011*

**american history**

encomienda
*May 31, 2011*

**Math**

Find m<2 m<2 is 9x - 32
*May 30, 2011*

**Juwayria Highscholl**

An obsever is looking out to sea from the top of a building that is 30 m above sea leavel. He observera ship at an angle of depression of 10. How far is the ship from the foot of the bulding?
*May 28, 2011*

**Accounting 100**

Who can be harmed when a company changes its accounting methods too often?
*May 26, 2011*

**Pre algebra **

At the wintergrove amusement park you can purchase a season discount pass for 75$ that will allow a 10$ admission to the park all season. If you do not purchase a season discount pass, then the park admission is 35$. Determine the number of times you must visit the park with a...
*May 25, 2011*

**Pre algebra**

The width of a triangle is x-3 and the length is 2x-1. Write and solve an equation to find the perimeter and area of the rectangle if the measures of its length and width are in a 1:3 proportion
*May 25, 2011*

**Pre algebra**

Simplify 10w+6+3w
*May 25, 2011*

**Pre algebra**

Simplify (3c•7)•2
*May 25, 2011*

**Pre algebra**

simplify (0+9k)+k
*May 25, 2011*

**Pre algebra**

6k+10-4k-2k
*May 25, 2011*

**Pre-algebra**

9n+5-9-9n
*May 25, 2011*

**Pre-algebra**

Simplify the expression (8•5)•1
*May 25, 2011*

**Pre-algebra**

Simplify the expression 12q•0•q
*May 25, 2011*

**Geometry - plz help**

h=x b1=21cm b2=20cm area=225.5cm2 h=2(225.2)/(21cm+20cm)
*May 25, 2011*

**Pre algebra**

Kayla has a 41% grade average. On an exam that is worth 20% of her grade she gets a 100%. What is her grade now?
*May 25, 2011*

**Math**

Kayla has a 41% grade average. Then sha takes an exam that is for 20% of her grade and gets an 100%. What is her grade now?
*May 25, 2011*

**US history**

What actions did William Carney take that he became the first black recipient of the congressional medal of honor?
*May 24, 2011*

**Grammar**

Hailey hurt her leg... Bad or badly
*May 24, 2011*

**Grammar**

What is the difference between accept and except?
*May 24, 2011*

**U.S. History**

During the civil war, name three reasons each why the north's money value went down and why the south's money went even more down than the north
*May 24, 2011*

**Science**

The part of a cell that protects it from its environment is the...?
*May 24, 2011*

**U.S. History**

This isnt homework but I found out that I am related to kit Carson (great great great great great great uncle) I wanted to know more about him. Any information? Thanks a lot!
*May 24, 2011*

**8th grade science**

What is the reprodution in bacteria, prokaryotic cells, called? A. Mitosis, B. Binary fission, C. Interphase, or D. Fusion. Thank you for helping! I need this because it's for my 9 weeks exam study guide which counts for a whole lot of my grade. Thanks!
*May 24, 2011*

**Math(scientific notation)**

1)9.32E-7 + 1.32E+4 = 2)1.32E+4 + 1.04E+5/6.47E+4= 3) 9.93E+6/(9.32E-7)(1.32E+4)= I keep getting a different answer from the answer my teacher provided.
*May 24, 2011*

**Human growth and development**

Order from least effective to most effective against pregnancy. Condoms, abstinence, sponges, birth control.
*May 23, 2011*

**Pre-algebra HELP ME PLEASE**

A triangle has side lengths of (x+4), (4x-8), and (2x+8) units. If the perimeter of the triangle is at least 88units, what is the minimum length of each side of the triangle?
*May 23, 2011*

**math**

8 divided by 4=2 2•5=10 hope this helped!
*May 23, 2011*

**Pre-algebra (DESPRATE NEED OF HELP!)**

A triangle has side lengths of (x+4), (4x-8), and (2x+8) units. If the perimeter of the triangle is at least 88 units, what is the minimum length of each side of the triangle?
*May 23, 2011*

**Biology(HELP ME!!!)**

An average person blinks their eyes about 20 times per minute. Estimate the number of times a person will blink in 1 year.
*May 23, 2011*

**Pre-algebra**

7(3g-9)>6(5g-6)
*May 23, 2011*

**Pre-algebra**

8(2j-6)>2(4j-4)
*May 23, 2011*

**Pre-algebra**

3(4b+8)<132
*May 23, 2011*

**Pre-algebra**

-5(c+15)<75
*May 23, 2011*

**Pre-algebra**

-12(g+8)>24
*May 23, 2011*

**Pre-algebra**

6(p-8)>78
*May 23, 2011*

**Pre-algebra**

8(m+5)>-32
*May 23, 2011*

**Pre-algebra**

-9(f-6)<117
*May 23, 2011*

**physical science**

False, not ALL units of energy are vectors. Most of them are though
*May 23, 2011*

**physical science**

True
*May 23, 2011*

**calculus**

Find the volume of the solid generated by revolving the region about the given line. The region is in the first quadrant bounded above by the line y= sqrt 2, below by the curve y=secxtanx, and on the left by the y-axis. Rotate the region about the line y=sqrt 2. i also need to...
*May 23, 2011*

**2nd Grade Math**

You have 7 peices of bread. You take all of them and cut them in half. Then, you take the bread agian to make more halves which makes quarters of the bread
*May 23, 2011*

**Us history**

What is the Wilmot proviso?
*May 23, 2011*

**Grammar**

Alot or a lot?
*May 23, 2011*

**Pre-algebra**

8(4s-7)<6(2s+4)
*May 23, 2011*

**Pre-algebra**

-5(3e-2)<-2(6e+7)
*May 23, 2011*

**Pre-algebra**

-3(2b+4)>4(b+7)
*May 23, 2011*

**Pre-algebra**

48>3(w+7)
*May 23, 2011*

**Pre-algebra**

-12(c-6)<120
*May 23, 2011*

**Pre-algebra**

7(v+5)>56
*May 23, 2011*

**I really need help with biology!!**

1. cardiac 2. you wind up to pitch 3. is unlikely to incur bacterial infection 5. glucagon
*May 20, 2011*

**Social Studies**

i have a social studies project i just have a couple questions maybe you could help me with ?
*May 16, 2011*

**Statistics**

500.12
*May 15, 2011*

**Math**

if someone is born on Nov 01, 1998 how old are they in may 2011 or in 2011? shouldn't they be 13 but in my answer book the answer is 12. how come? im confued?
*May 14, 2011*

**Statistics**

If one card is randomly selected, what is the probability that the card selected is neither an ace nor a jack?
*May 14, 2011*

**Statistics**

A small gelateria has ten flavors of ice cream. They also have four toppings: crushed graham crackers, fresh strawberries, jimmies, and whipped cream. How many two-scoop sundaes can be made if the two scoops are different flavors and only one toppig can be selected?
*May 13, 2011*

**Statistics**

70% of Americans file their taxes electronically. For a group of 30 American adults who were selected at random, what is the probability that exactly 10 of them do not file their taxes electronically.
*May 13, 2011*

**statistics**

70% of Amerians file their taxes electronically. For a group of 12 American adults who were selected at random, what is the probability that at least five of them file their taxes electronically?
*May 13, 2011*

**Physics**

PLEASE HELP! ITS URGENT!
*May 12, 2011*

**Physics**

A Saturn V rocket with an Apollo spacecraft attached has a combined mass of 2.1 105 kg and will reach a speed of 11.2 km/s. How much kinetic energy will it then have?
*May 12, 2011*

**Math**

Please help simplify this problem. Its Kinda hard. 8-5/8+1/2*6/9 Thanks
*May 11, 2011*

**Algebra**

I've tried and tried and just can't do it. Please help solve this problem. 16-2(8w-7)=3w-18(2-w)
*May 11, 2011*

**Physics**

What do you mean with the inverse?
*May 10, 2011*

**Physics**

A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).
*May 10, 2011*

**Physics**

Aristotle is sometimes quoted as claiming that a body falls at a speed proportional to its mass. Let us suppose that Aristotle’s experience was based on objects falling in air (with turbulent flow drag) essentially at their terminal speeds. a. If Aristotle were ...
*May 10, 2011*

**Physics**

A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).
*May 10, 2011*

**Physics**

Aristotle is sometimes quoted as claiming that a body falls at a speed proportional to its mass. Let us suppose that Aristotle’s experience was based on objects falling in air (with turbulent flow drag) essentially at their terminal speeds. a. If Aristotle were ...
*May 10, 2011*

**Physics**

A body of mass m moves under the influence of force F(r). Given it's trayectory r(t), find F(r).
*May 10, 2011*

**Physics**

Aristotle is sometimes quoted as claiming that a body falls at a speed proportional to its mass. Let us suppose that Aristotle’s experience was based on objects falling in air (with turbulent flow drag) essentially at their terminal speeds. a. If Aristotle were ...
*May 10, 2011*

**Biology 1**

What is a Biochemical cycle and why is it important? Give at least one example.
*May 9, 2011*

**chemistry**

the volume ratio between the two gases should have been exactly 2:1. What physical property of either gas might explain the difference between the observed ratio (before rounding) and the theoretical value?
*May 4, 2011*

**Math**

Kelsey has 6 coins. 1/3 of her coins are dimes. The value of the dimes is one-fourth the value of the coins. How much money does Kelsey have?
*May 2, 2011*

**Brief Calculus**

Thanks Guys!
*May 2, 2011*

**Brief Calculus**

Decide on what substitution to use, and then evaluate the given integral using a substitution. HINT [See Example 1.] (Round your decimal coefficients to four decimal places.) x/(2x^2 − 1)^0.4 dx
*May 2, 2011*

**Algebra**

solve the eauation check for extraneous solutions. log5 x=4
*April 30, 2011*

**Chemistry**

we were asked to find the enthalpy change because it is an exothermic reaction. Dont i have to convert cm^3 into dm^3 in the equation?when i divide the Heat energy with the number of moles in order to get enthalpy change do i put the moles of the limiting reagent?
*April 30, 2011*

**Chemistry**

So I am writing a lab report and Im stuck with calculating the enthalpy change of combustion of the following reaction: Mg+2HCl--> MgCl2+H2 .I am given the mass of Mg which is 5g and the concentration of HCl which is 2M and the volume of HCl which is 50 cm^3.I found the ...
*April 30, 2011*

**precalc**

How do you solve log5 sqrt125?
*April 26, 2011*

**Algebra 1**

-3t/t^3-t^2
*April 24, 2011*

**english**

Neither her associates nor the doctor __________ the surgery is necessary. thinks think
*April 22, 2011*

**geometry**

x^2=y^2-6x+8y=10 what shape is this?
*April 21, 2011*

**chemistry**

What is the lewis dot diagram for menthol? (C10H20O1)
*April 21, 2011*

**Physics**

I've been stuck on this problem for a while. Im not sure where to even begin. A bike wheel is rotating with an angular velocity of 3.1 rev/s. If the coefficient of kinetic friction between the wheel and brakes is .87, then find the revolutions the wheel makes in coming to ...
*April 21, 2011*

**algebra**

which expression is the equivalent of 3x+2y+8−9?
*April 20, 2011*

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