# Posts by Kevin

Total # Posts: 1,245

**6th grade**

Kara has a diamond ring. Her ring has a volume of 6cm(to the third power) and a mass of 2g. What is the density of her ring? INCLUDE UNITS!

**Pre Calculus**

The electricity in your house is alternating current because the current varies sinusoidally with time. The frequency of sinusoid is 60 cycles per second. Suppose at Time = 0 seconds the current is at its max of 5 amperes. Write an equation expressing current in terms of time

**math**

The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed. (a) What percent of students earned a score between 50% and 70%? (b) If 60 students took the exam, how many got a score between 50% and 70%?

**math**

Explain how to evaluate x-8 when x=10?

**math**

five names for -73

**Math**

Is anyone familiar with base ten? I need to show my work on how I received my answer. Write the numeral in base ten. 200six =532

**algebra**

A wheel makes 4 17/20 revolutions per minute. If it rotates for 48 minutes,how many revolutions does it make?

**social**

Ok, I think both of these are syndicated but im so confused! The type of programming aired by a station with which they "affiliate" is called A) syndicated programming B) local origination C) network programming D) non of the above This type of programming, produced ...

**social**

Ok, I think both of these are syndicated but im so confused! The type of programming aired by a station with which they "affiliate" is called A) syndicated programming B) local origination C) network programming D) non of the above This type of programming, produced ...

**social**

The "jack fm" format is an attempt to stimulate the random programming of an ipod on shuffle. True or False I'm really not sure what it is.

**social**

i agree with the first one, but why would the second one be false? when somethings head to head wouldnt it be 2 programs battling and 1 trying to be successful?

**social**

Never mind I'm not sure that's why i asked, how about the other question i think that's false do you?

**social**

unique as in do they have a competitor

**social**

Are both these false? A unique format is one for which there is no similar competition in the market. A) True B) False I also think this one is false but again not sure A "head to head" format refers to a format that is trying to successfully program against a ...

**social**

Are both of these false A unique format is one for which there is no similar competition in the market. A) True B) False I also think this one is false but again not sure A "head to head" format refers to a format that is trying to successfully program against a ...

**social**

Can you help me please, i think it is false but im not sure A unique format is one for which there is no similar competition in the market. A) True B) False I also think this one is false but again not sure A "head to head" format refers to a format that is trying to...

**Social Studies**

Thank you so is the first one true as well?

**Social Studies**

Is this true or false: The radio business and the record business are interdependent; they have strong ties between them. i think its true and also is this true or false Radio programming can derive from locally produced, syndicated or network programming. A) True B) False

**math**

A TV reporter said that twice as many woodlands were lost this year to fire than in the preceding year. He claimed this was an increase of 200%. Was he correct?

**Determinants**

Why are finding determinants important? Aside from Cramer's rule when are determinants used?

**Math**

Write 0.36 as a fraction.

**math**

a girl flipped a coin 4 times, what is the probability that she gets 3 heads and 1 tails? Using a tree diagram

**Math**

Hey buddy, i'm pretty sure this is against the rules. just so you know, its unlikely that you'll get much help from this site. i think you should use a different site if you want help...the census, just a thought. best of luck to you, i can already tell you are going ...

**Finance**

What is the current yield of a annual coupon bond with a 6% coupon, four years until maturity, and a price of $750?

**Math**

A standard train ticket in a certain city costs $2.50 per ride. People who use the train also have the option of purchasing a frequent-rider pass for $18.00 each month. With the pass, a ticket costs only$1.75 per ride. How many train rides in a month make the frequent-rider ...

**Math**

Solve and graph the solution set on a number line. |5x + 7| - 2 < 4 <------------------------> -5 -4 -3 -2 -1 0 1 2 3 4

**Algebra 2**

Solve each equation: (x^2-3)(x^2+3x-4)=0 (x+2/3)(x^2+5x+1)=0 x^3-2x^2+x=0 x^3+3x^2-5x-4=0

**Global History**

How did military motivies contribute to imperialism? and why did missionaries support imperialism?

**Global History**

How was Nationalism a cause of imperialism? and what was gained economically through imperialism?

**Math**

How do I make 2/30 into a percent? I don't need answer only need to know how to solve.

**Math**

I am suppose to write 2/30 as a percent. My answer choices are a .o6%, b. .005% c. .6% d. .05% I thought I would divide 2 into 30 which would be .06 and then moving 2 spaces to the right equaling 6%. How do I solve this problem.

**Math**

How would you work this... You are facing north. You turn 270 degrees counterclockwise. Which direction are you facing? Is it West? You start out at 90 and go from there? I don't know...

**math**

Suppose the cost C(q) (in dollars) of producing a quantity q of a product equals C(q) = 500 + 2q +1/5q^2 The marginal cost M(q) equals the instantaneous rate of change of the total cost. Find the marginal cost when a quantity of 10 items are being produced.

**math**

Solve the inequality x^2 + 7x + 12 < 0.

**math**

Find the domain of g(t) = sqrt (3t + 15.)

**math**

If f(x) = 3x + 9 and g(x) = −x2, then find f(g(1)).

**Physics**

A 90 kg halfback runs north and is tackled by a 120 kg opponent running south at 4 m/s. The collision is perfectly inelastic. Just after the tackle, both players move at a velocity of 2 m/s north. Calculate the velocity of the 90 kg player just before the tackle. a.) 3 m/s ...

**physics**

The coefficient of static friction between the tires of a car and a horizontal road is 0.515. As the car brakes, what is the magnitude of the maximum acceleration of the car? Assume the net force on the car is the maximum static friction force.

**Chemistry**

Write the mechanism for (E)-2-5-dimethyl-hex-3-ene and bromine? Assign the R, S configuration for each of the products and determine the stereochemical relationship of each set of products. I think the products will be trans but I am not quite sure how the mechanism work. Any ...

**math**

Why exactally does the absolute value of -3+4i = 5. I know (-3) squared plus (4i) squared = 5? Could you include a graphic approach as well? Thank you.

**Chemistry**

Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if Ba(NO3)2(aq) reactant is present in stoichiometric excess. Separate your answers by comma. NaCl(aq) + Ba(NO3)2(aq) → NR

**10th grade**

Microbiology affects a person on a daily basis because it starts from the things that we do to the things that we don't. Such as when we take Omega 3 Fish Oil Supplements, the oils, and the vitamins from within, helps us daily, without us even knowing about it. Or when we ...

**Organic chemistry**

Is m-nitroaniline soluble in water, 1.0M NaOH, 1.0M HCl?

**Organic chemistry**

is benzoic acid soluble in water, 1.0M NaOH, 1.0M HCl?

**Trig**

Thanks for letting me know about wave seperation. Could you tell me more please. What exactally is meant by wave seperation. Does it mean above and below the midline or does it mean seperation between wave cycles? What does it mean?

**Trig**

in the equation y=acos b(x-h)+k, what exactally does b represent. How is it helpful?

**Trig**

In the equation y=4cos 6x, what does 6 represent? In general for the equation y-acosbx, what does b represent?

**chemistry**

Predict the Products for the following reactions and write the chemical equation. Combustion: Liquid Octane, C8H18 burn in oxygen gas. how would you set this up and predict the product? Thnx in advance whoever figures it out :)

**Chemistry**

"A sample of a nonpolar molecules capable of only dispersion forces can have a higher boiling point the a sample of a polar molecules capable of hydrogen bonding. This statement can only be true if the formula weight of nonpolar molecule(the answers are =,<, or >)...

**Bible**

I believe the 1st question is number 2. & the 2nd question is number 3. Can anyone confirm this. Thanks.

**Bible**

I need help with these two questions please. I cannot figure out what goes with what. Thanks. The orderly design and purpose of nature which verifies a divine intelligence is a(n) ? argument. Choises: 1. teleological 2. cosmological 3. anthropological The analogy between man ...

**Bible**

I don't know which one of these fits the blank. Can someone please help? The law of cause-and-effect which verifies a divine power is a(n) ? argument. Choises: 1. teleological 2. cosmological 3. anthropological

**Algebra**

A rectangle is 20 inches tall it's area is 260 inches what is the width

**Business**

What is the proper format for a research taxonomy? I have to write about the Strategic Management process.

**History**

I still think its #1? is that correct?

**History**

One of the significant changes in atmosphere in Jefferson's administration was: 1. The number of common people involved in government. 2. The closing of the bank of the united states. 3. the widespread dismissal of federalist officeholders. 4. The reinstatement of the ...

**Econonmics**

Assume that the gross national debt initially is equal to $3 trillion and the federal government then runs a deficit of $300 billion

**Organic Chemistry**

The one we used was sodium hypochlorite (NaOCl)

**Organic Chemistry**

What other oxidizing reagents could have been used to convert the 9-fluorenol to 9-fluorenone?

**math**

Ok really I don't know all of the steps but if you look at the da/dt of a) and put it over the dh/dt of b) then you get your answer. I don't know. I'm doing it right now. God Bless!

**Math**

When you put together unequal groups you can only add. Is this correct? Explain

**Science**

I believe a starfish has radial symmetry but how would I divide it using a ruler since there are 5 arms?

**physics**

38 Joules dude

**9th grade**

Mr. Mist’s ramp broke so he tried to lift the his 150 Newton box of ungraded papers with a pulley system. Mr. Mist had to pull the rope in his system 3 meters. The papers were lifted into his car by the pulley system which lifted the box 1.5 meters, while Mr. Mist only ...

**Trig**

How do you do this problem? 1+i(square root of 3)

**physics**

To keep the cylinder in equilibrium both side must be equal. (m1)*(v^2/r)=(m2)*g Left side=Right side (v^2/r) = (m2)*g / m1 isolate “v” on the left… v^2 = (m12)*g*r/m1 v = sqrt((m2)*g*r /(m1)) plug in the values and you are done… v = sqrt(2.5*9.81*.2)/(1.5...

**physics**

A ball of mass 0.35 kg is fired with velocity 157 m/s into the barrel of a spring gun of mass 1.8 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to friction. What fraction of ...

**physics**

thanks

**physics**

A 80- kg ice hockey player standing on a frictionless sheet of ice throws a 6.2- kg bowling ball horizontally with a speed of 2.1 m/s. With what speed does the hockey player recoil?

**us history**

In 1754,which country claimed the least amount of land in North America

**FINANCE**

Tim recently invested $3,500 in a project that is promising to return 10.75 percent per year. The cash flows are expected to be as follows: End of Cash Year Flow 1 $750 2 800 3 ??? 4 950 Note that the 3rd year cash flow is unknown. Assuming the present value of this cash flow ...

**Statistics**

In hypothesis testing, if a claim statement is asking to test a percentage, your graph is a T or Z line?

**Statistics**

In hypothesis testing, if the population standard deviation is KNOWN, your graph should be labeled a T or Z line? In hypothesis testing, if the population standard deviation is NOT KNOWN, your graph should be labeled a T or Z line?

**math**

im learnin about y=mx+b 1.describe the line you think each equation represent Y=x, y=5, x=-3 2. The equation of a line is y=mx+2. determione the value of m when the line passes through each pint D(12.5) s(1.-3) e(-2.6) a(-5.1)

**Chemistry**

A student finds a medallion which could be made of pure platinium or silver. IN order to find out what the medallion is made of the student takes the medallion to a chemistry lab. The student measures the density of the medallion as follows. The medallion is placed on a ...

**chemistry**

A rectangular metal bar has a volume of 50.0 inches cubed.The Metal BaR weighs 1.42kg. Calculate the density of the metal in grams per cubic centimeter.

**math**

Brian O'Reilly earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as a tutor. How much does Brian earn as a tutor?

**Biology**

What's the difference between LB "-" and LB "+"?

**Chemistry**

If 7.83 g FeCl3(s) is dissolved in enough water to make 2.50 L of solution, what is the concentration of Fe3+ in the solution?

**6th grade Reading**

sorry don't know it lol

**physics**

A highway curve with a radius of 430 m is banked properly for a car traveling 115 km/h. If a 1550- kg Porshe 928S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid?

**Science**

^that is so wrong

**6th grade math**

how would you say .3481 in words?

**math**

write the six-digit number that has the digit in the thousand's place, with the remaining digits being

**11th grade**

1.71 cause of Sig Figs

**Finance**

Jenning inc. paid out total dividends equal to $ 11,124,200 in 2008. If Jennings reported Retained earnings of $320,868,600 for 2007 and retained earnings of $350,290,100 for 2008, what was Jennings reported net income in 2008?

**math (tree diagram)**

yo dudes hit me up on aim my screename is lilkevyy45

**math (tree diagram)**

heyy

**chemistry**

does changes in solubility between solute and solvent, just mean that the rate at which solute co2(gas) is dissolved by solvent to form co2(aq) is = to rate at which c02(aq) gains eenrgy from collitions to leave dissolved state or what? I need siome clarity.

**chemistry**

carbon dioxide collide with the liquid solvent and enters its dissolved states? so what does this have to do with solubility equillibrium.

**chemistry**

Equillibrium, an example given by my textbook confused me. First it shows a reaction inside a soft drink: co2(g)--><--co2(aq) but than it says the reaction inside a soft drink would involve solubility equillibrium because it involves a change in solubility between ...

**Chemistry**

I meant endothermic not endergonic sorry.

**Chemistry**

Since decomposition is an endergonic reaction. Does this mean it's reverse reaction synthesis is exothermic?

**chemistry**

6. dilution can also decrease rate of raction because you deacrease concentration?

**chemistry**

5. addinf water to a equillbrium system will make it more dilute and increase the volume but decrease pressure so system will shift in direction which produces more ions?

**chemistry**

1.If a container that is 1L has 1 mol of solid NACL , if you add more nacl will the concentration of solid increase? it should? because if you increase it to two mols it will become 2 mol/l right? so in a equillibrium system like nacl(s)--><---na+ + cl- if you increase ...

**college algebra**

The origin is (0,0) Both the x and y intercepts at the origin are always 0.

**social studies**

I agree that people should be able to help themseleves. To have a successful life you must have the mindset of a winner. To be a winner you must have three things self-confidence, determantion, and an high education.

**social studies**

People should be able to help themselves. If they want to make their life better they need to be motivated and should find a way to make it happen. Equal opportunity for all. You just have to work for it. If a person is in a low paying job that is probably all they really want...

**6grade english**

Give them fish they will eat for a day. Teach them to fish they will eat for years. With regard to low income countries and based on your knowledge and understanding of culture, society and social stratification provide support for or criticism of this statement.