Friday

July 11, 2014

July 11, 2014

Total # Posts: 1,454

**algebra**

Perform the indicated operation 1/3divided by 3/8

**maths exponential functions**

I have a maths assignment and i need help with this question my teacher is overseas at the moment and it is due when he gets back The Population P, of penguins in a certain region of Antarctica can be modeled by the relation P=Po (2) t/90, where t is time, measured in months a...

**physics**

A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 270 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.9 m/s relative to the shore, and then hops onto an identical floating log that is init...

**Geometry**

Find the volume of a sphere whose surface area is 804 u2

**Math**

How far does the bike go on one rotation of the pedal sprocket in gear 2c? Gear 2c = 1.95

** Trig**

Yeah sorry wasn't thinking when I posted that.

** Trig**

If = 58° and m = 120 in, what is the value of n to the nearest tenth of an inch?

**precalculus**

An investment decreases by 4% per year for 3 years. By what total percent does it decrease after the 3 years?

**precalculus**

An investment decreases by 4% per year for 3 years. By what total percent does it decrease after the 3 years?

**world history**

During the eighth century C.E., many of the rulers of Japan were A. women. B. commoners. C. from the merchant class. D. military strongmen

**Bio**

Why do scientists think that colonial organisms were important in the evolution of multicelluar organisms? thanks!

**Bio**

what is another method for classifying bacteria? (other than shape or cell wall structure). thanks! :)

**precalculus**

A bacteria culture initially contains 1500 bacteria and doubles every half hour. a) Find an expression for the number of bacteria after t hours. Q(t)= b) The number of bacteria after 20 minutes is (the answer must be an integer) c) The number of bacteria after 9 hours is

**CHEMISTRY**

Sulfur dioxide gas reacts with hydrogen sulfide gas to produce elemental sulfur (S8) and water vapor. Predict the temperature range over which this reaction is spontaneous.

**Biology**

We did this lab in which we used 3 brands of hand sanitizers and did the kirby bauer test. We measured the zone of inhibition for each of the three trials in millimeter. I need to make a graph, probably a line graph but im not sure what to put for the x and the y axis because ...

**English**

i AGREE, seems like he would be talking or thinking about his dead son, thats what i would do, Maybe the author intended for Amy to talk about the fence instead to show his cold personality.

**Consumer Math**

Thanx, the google search really doesnt help I already tried that, but I'll look in our post office, Thanx again!

**Consumer Math**

The math lesson I am currently working on is "Income Tax Return 1040EZ" I need a certain table to figure out the problems, that table is not given. In the lesson it says to "Use the current Tax Table supplied by your local IRS to find the tax liability". I...

**English**

an article is like, an, in, a...ect.

**statistics**

The test scores for 9 students on the Unit 1 test were 35, 25, 50, 95, 80, 60, 45, 100, and 90. What is the value of the second quartile for this data set?

**Math Trivia**

yah thanks! i am having a hard time with number one. i know i could sit down and take a long time to do it...but i was wondering if their was a formula to it, or a quicker way to do it...

**Math Trivia**

1) A school has 1-- closed lockers. Larry comes into the school and "toggles" every second locker, then Fred toggles every 3rd, Bob every 4th, etc, up to Zoe who toggles every 100th locker. After all this"toggling" how many lockers are open? 2) If you take ...

**Chemistry**

Calculate the pH of a 0.250M solution of Sulfurous acid, H2SO3.

**Chemistry **

correction: and melted with 4.38g of campor,

**Chemistry **

when 0.154 g of sulfur is finely grounded and melted with campor, the freezing point of the campor is lowered by 5.47 celsius. A)what is the molecular weight of sulfur? B)what is its molecular formula? fp of campor: 178.4 kf of campor: 40

**Ethics**

Has email impact on communication been positive or negative? why? Would you judge somebody by the quality of his or her email message? why or why not? Could someone professional reputation be enhanced or hindered by the quality and effectiveness of his or her internet communi...

**Literary Analysis and Composition**

lol...im taking the same test!

**math**

Find the linear block code generator matrix G, if the code generator polynomial is g(x) = 1 + x^3 for a (7,4) code.

**Math**

If the code generator polynomial is g(x) = 1 + x^2 for a (5,3) code, find the linear block code generator matrix G.

**Math**

Mr. Pennypacker left half of his estate to his wife; $40,000 to his daughter; half of what remained to his butler; half of what remained for the care of his favorite dog; and the remaining $6,000 to charity. What was the value of Pennypacker's estate?

**Physiology**

What is the difference between the function of autonomic transmitters and receptors? In what way or how do they regulate effector cells that are dually innervated? Thanks!

**derivatives**

Explain how a long stock and long put strategy equals the cash flow from a long call strategy.

**Math**

Consider an antenna transmitting at 900 MHz. The reciever is traveling at a speed of 40km/h. Calculate its Doppler shift.

**Physics**

Mars has a radius of about 0.53 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on Mars.

**Physics**

A 600-kg geosynchronous satellite has an orbital radious of 6.6 Earth radii. What gravitational force does Earth exert on the satellite?

**Math**

what is the square feet of a box with two sides of 2 2/3 x 2 2/3 each?

**chemistry**

How much heat is associated with converting 100 g of steam at 112 degrees C to ice at -5.3 degrees C

**English**

Now I am confused. What about these sentences? I am happy to say that everyone in my family felt good/well after eating my meal. Is it well because it is an adverb that describes felt?

**English**

I felt good/well when my family said that they enjoyed it. I think that I should pick well because it is an adverb that describes how I felt, is this correct?

**English**

Which word should I use and why? I did my best to make a real/really good dinner.

**Physics**

A 390 kg motor boat, moving down a frictionless ramp, is connected over a massless pulley to a 193 kg counterweight that rests on a horizontal surface. The ramp is inclined by 28.6°, and the co-efficient of kinetic friction between the couterweight and the horizontal surfa...

**physics**

A major-league pitcher can throw a baseball in excess of 40.2 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 17.7 m away from the point of release?

**physics**

sealed metal container can withstand a pressure difference of 0.630 . The container initially is filled with an ideal gas at 12 and 0.80 To what temperature can you cool the container before it collapses? (Ignore any changes in the container's volume due to thermal expansion

**English 3**

Great Gatsby Chapter 1. Why is Nick telling the story? Why is nick "confused and disgusted" at the end of this chapter?

**Chemistry**

U+F6-->UF6 If 8.4 g UF6 are recovered from 55 kg of ore, what is the weight % of uranium in the ore? Answer in units of %

**math**

The equations y=-2X+12, y=6-X, and X=0 enclose a region in quadrant I. when that region is reflected over the line y=6-X, a portion of the reflection is in quadrant II. Find the area of that resulting region.

**Criminal justice**

Can someone please help. Who is responsible for the concept of crime prevention? Ive been stuck on this question for two days and i need help urgent. Thank you!

**Statistics**

In a study to determine if you can predict stock price based on P-E ratio, what is the response variable and what is the explanatory variable? How would you label the X and Y axes in a scatterplot of the data?

**physics**

a 4.0 m hockey puck is moving horizontally at 5.0 m/s. the amount of work that must be done on the puck to stop it is?

**calc**

Given [(x-5)/(x-3)]^2 . Find any stationary points and any points of inflection. Also find any horizontal and vertical asymptotes.

**us history**

it started on 1879. They fought over riches.bob shbaca was the leader.

**chemistry**

When NH3(aq) is added to Cu^2+ (aq) a precipitate initially forms. what is its formula?

**Physics**

A 16kg child on roller skates rolls 2m down an incline at 20 degrees with the horizontal. With no friction, what is the total kinetic energy of the child at the bottom of the incline?

**Chemistry**

Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium ox...

**History**

Can you please find any documents (pictures, quotes, info) for the following question: Compare and contrast the economy and politics that impacted the global economy of Europe during the Middle Ages and the Renaissance. Thank You

**H NMR**

what is the structure of the compound that is an obvious question for NMR

**H NMR**

what is the structure of the compound that is an obvious question for NMR

**orgo - H NMR**

C4 H10 O2 ppm = 3.25 singlet 6H ppm = 3.45 singlet 4H

**H NMR**

C4 H10 O2 ppm = 3.25 singlet 6H ppm = 3.45 singlet 4H

**Chemistry**

Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium oxi...

**Chemistry**

Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium ox...

**Chemistry**

Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide gas. The calcium oxi...

**science**

If you have 3 liters of air in your lungs and 2/10 of that is oxygen, how many millimeters are in your lungs?

**Precalculus Someone please help**

Evaluate all six trigonometric functions at t, where the given point lies on the terminal side of an angle of t radians in standard position. (40/41, -9/41)

**physics**

The drawing shows a hydraulic chamber in which a spring (spring constant = 1292 N/m) is attached to the input piston, and a rock of mass 24.7 kg rests on the output plunger. The piston and plunger are at the same height, and each has a negligible mass. By how much is the sprin...

**Physics**

A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 50.0 kHz, and if the speed of sound in air is 340 m/s, what is the smallest insect a bat can detect?

**Physics**

A object-spring system oscillates with an amplitude of 4.0 cm. If the spring constant is 210 N/m and object has a mass of 0.50 kg, determine each of the following values. (a) the mechanical energy of the system J (b) the maximum speed of the object m/s (c) the maximum accelera...

**Physics**

The blades of a ceiling fan have a radius of 0.399 m and are rotating about a fixed axis with an angular velocity of +1.65 rad/s. When the switch on the fan is turned to a higher speed, the blades acquire an angular acceleration of 2.08 rad/s2. After 0.520 s have elapsed since...

**physics**

The drawing shows a hydraulic chamber in which a spring (spring constant = 1292 N/m) is attached to the input piston, and a rock of mass 24.7 kg rests on the output plunger. The piston and plunger are at the same height, and each has a negligible mass. By how much is the sprin...

**physics**

What is the longest wavelength for standing sound waves in a 102.0 cm long tube that is open at both ends?

**ms.sue**

so it would b 11 then

**ms.sue**

if y+2=13 woudlnt you add 2 too both sides amd get y=15?

**Algebra**

whats the problem?

**math**

so if u flip it the negative sign will go away and turn it too positive

**math**

1/3b=-3 i know u would divide both sides by 1/3 and it would cancell out the 1/3 and when u divide 1/3 by -3 you will get -1/9 so u flip it u willl get -9 right?

**Math**

it would b 145,000 right?

**Algebra 1 **

u r right

**math**

wow i feel stupid

**math**

do u have too add or subtract the like terms bc if u subtract 5b-6b it will equal too -1b and then u subtract -6--7 it will equal too 1 so then it would b 1=-1b

**math**

-6+5b=6b-7

**algebra1**

then i get -21/1

**algebra1**

i get up too 1/3a=-7

**algebra1**

1+1/3a=-6

**math**

so it would b x=4

**math**

1/2x=2

**algebra1 **

hey damon i need help on mine thank u

**Algebra uno help please. :)**

where does the 8 come into the problem at?

**math**

8-7b=-6b+9

**College Algebra**

65437990

**physics help me please!**

i think it would be b too bc the degress dropps from 40 to 30 so im saying your right on b

**math**

Solve for x. -3x - 8 + 6x = 7

**algebra1**

-3+8x-8=-8 how do u solve it?

**physics**

what would the third longest be? cause i know that the second longest would be what you just said obviously, but the third one cant be half of that, or zero, so im a little confused

**physics**

What is the longest wavelength for standing waves on a 238.0 cm long string that is fixed at both ends?

**physicS**

What is the longest wavelength for standing waves on a 238.0 cm long string that is fixed at both ends?

**algebra1**

(w-9)*(w-4) im really struggling ppl plz help

**geometry**

solve this equation (w-9)*(w-4)

**Math**

Solve for x : 16y^2=120x-225

**Physics**

An FM radio station broadcasts at 80.9MHz. Determine the period of the radio waves. i know period is just 1/freq. so what would i convert 80.9 MHz into???

**Physics**

An FM radio station broadcasts at 80.9MHz. Determine the period of the radio waves. i know period is just 1/freq. so what would i convert 80.9 MHz into???

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