Thursday

April 17, 2014

April 17, 2014

Total # Posts: 299

**Algebra**

Please help. f(x) -6x-1 and g(x)=4x^2 Select the solution for(f+g)(x). Thank you.

**Please help!**

Hi, I really need help with this one. Determine the equation of g(x) that results from translating the function f(x) = x^2 + 3 upward 12 units Thank you.

**Algebra**

Hello, This one as well. Thank you! Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x^2 + 3x + 9.

**Algebra**

Hello, I hope all is well. I am hoping you can help. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -7x^2 + 6x + 3.

**math**

Karen and Wayne need to buy a refrigerator because theirs just broke. Unfortunately, their savings account is depleted, and they will need to borrow money in order to buy a new one. Sears offers them an installment loan at 13% (add-on rate). If the refrigerator at Sears costs ...

**chemistry**

was the formation of reactants or products favored by the addition of heat?

**math**

how do I multiply 53.33 100

**stat**

couple plans to have four children what is the probability that three are girls and one is a boy

**math**

elizabert has a box of shirts.1/2 of the shirts are small,2/5of the shirts are medium, and 5 shirts are large. how many shirts are in box?

**Math**

a man has a roll of 200m copper wire, he wires on room using 17m, and the next room using 83m of copper wire. How many meters is left on the roll after he does the two rooms?

**math**

is any multiple of 8 an even number or not

**Computer Science**

Given an undirected graph G = (V,E), does there exist a set D ⊆ V of size k such that every v ∈ V is either in D or adjacent to at least one member of D. Show that DS∈NPC. You may only assume that VC is known to be NP-Complete.

**Physics**

Tom the cat is chasing Jerry the mouse across a table surface 2.4 m oﬀ the ﬂoor. Jerry steps out of the way at the last second, and Tom slides oﬀ the edge of the table at a speed of 4.8 m/s. Where will Tom strike the ﬂoor? The acceleration of gravit...

**Computer Science**

Suppose X is a random variable and Y = aX + b is a linear function of X. Show that the correlation of X and Y is -1 if a < 0. cor(X,Y) = cov(X,V)/ sqrt(var(X)*var(Y))

**Computer Science**

Anyone?

**Computer Science**

cor(X,Y) = cov(X,V) / sqrt(var(X)* var(Y))

**Computer Science**

CORRECTION: Suppose X is a random variable and Y = aX + b is a linear function of X. Show that the correlation of X and Y is -1 if a < 0.

**Computer Science**

Suppose X is a random variable and Y = aX + b is a linear function of X. Show that the correlation of X and Y is 1 if a < 0.

**Math**

Fred decides that 12+40=62 is NOT a true equation.Is Fred correct?Explain.

**5th grade math**

if kelly gave 1/3 of a pizza to holly and 1/5 to diane how much did she have left?

**Math**

How would you use a number line to round 148 to the nearest ten.Explain.

**Math**

The base length, the screen height and the screen diagonal form a right-angle triangle. Therefore, you can use pythagorean theorem to calculate screen height: sqrt(40**2 - 32**2) = 24.0 Then surface is length by height: 32 * 24 = 768

**Trigonometry**

Solve the equation cos^2A = sin^2A + sinA when 0¨¬¡ÂA¡Â360¨¬. Select all the solutions from the list below. A. 330 degrees B. 270 degrees C. 150 degrees D. 30 degrees

**math**

The perimeter of a fence is 84 meters. If the width is 2 meters less than the length, find the width

**math stats**

Calculate p ̅. x1 20 n1 50 x2 55 n2 100

**math stats**

Set up the null and alternative hypothesis for the following problem. A survey reported the planning habits of men and women. The question asked, "how do you primarily keep track of meetings, appointments and deadlines?" 56% of men and 46% of women answered, "in...

**statistics**

What is your conclusion based on the following data? A survey was conducted to study the effects of weight loss from a low fat diet. Two random samples of 100 people each were selected. One group was put on the low fat diet and the other group on the regular diet. The weight g...

**statistics**

Set up the null and alternative hypothesis for the following problem. A survey reported the planning habits of men and women. The question asked, "how do you primarily keep track of meetings, appointments and deadlines?" 56% of men and 46% of women answered, "in...

**statistics**

Calculate p ̅. x1 20 n1 50 x2 55 n2 100

**statistics**

A store manager claims that the average age of his customers is less than 40 years old, while the industry average is 40 years old. He asks you to test his thinking. You collect a sample of 50 customers and found that the average age is 38.7. Assuming that the population stand...

**statistics**

How is the P-value used to determine whether or not to reject the null hypothesis?

**computer**

how to download C language? give any website for downloading C language.

**math**

how to find 2 fracture each third

**math**

A conical funnel has a base diameter of 4 cm and a height of 5 cm

**Chemistry**

What are the Six possible ratios for the equation for the formation of potassium chloride?

**Chemistry**

What are the Six possible ratios for the equation for the formation of potassium chloride?

**world history**

7. In the eleventh century, who did the Muslims refer to as "the army of God?"

**stastics**

For each of the following confidence intervals, indicate how much of the distribution would be placed in the cutoff region for a two-tailed test from 80%, 85% and 99%

**Chemistry**

For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g + it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this equilibrium mixture, calcul...

**Physics**

5

**human resources**

What training and development programs help companies the most in a struggling economy?

**math**

Jim spoke on the phone with all his friends last weekend.On Saturday he spoke for 3/8 of an hour and on Sunday he spoke for half an hour. During that time spent, he spoke to liam for 1/8 of an hour .What fraction of the time Jim spent talking with his friends did he spend talk...

**Science**

Is it incorrect to use g/ml as the unit for the density of a solid object? I thought g/ml and g/cc were the same.

**Science**

If an object with a density of 0.8 g/cc is placed in pure water is it correct that 80% of the object will be below the water line and 20% of the object will be above the water line?

**Finance**

++__

**chem**

combination reaction. mg2+o2

**Statistics**

start with X=100 and add four x values to make a samle of 5 data such that the standard deviation of these data equals 0

**arithmetic**

does -9 + 2 equal 2 + (-9)?justify your answer.

**Prove or Disprove**

Cos(X+y)cos(x-y)= cos^2theta - sin^2theta I foiled the left side as a start because I can kind of see sin^2+cos^2=1 but I can't finish.

**Prove or disprove?**

cos(X+pi/6) + sin(x-pi/3) = 0 I am working with one side but I am not sure if I can subtract at all here.

**Trig Identity**

Prove or disprove the following identity sin^4theta - cos^4theta = sin^2theta-cose^2theta

**math**

If a bar code contains a letter followed by a digit from 1 to 9 followed by another letter how many different codes are possible?

**calculus**

What is the degree 5 coefficient of the polynomial p(x)= x^2 (x+1) (x+3x^3 + 4x^4)?

**Calculus II**

A spherical tank with radius of 5 feet is set on a coloumn 15 feet above the ground. How much work is required to fill the tank with water if the solution is pumped from ground level?

**Science**

What does sleep do for the body?

**Science**

My choices are evaporation and condesenation

**Science**

Large deposits of salt get into lakes in Utah due to what?

**Math**

Thanks!

**Calculus 3**

A medieval city has the shape of a square and is protected by walls with length 550 m and height 16 m. You are the commander of an attacking army and the closest you can get to the wall is 100 m. Your plan is to set fire to the city by catapulting heated rocks over the wall (w...

**calculus**

Rewrite 2sqrt(x) - (1/x) into exponents of x (eg x^2), and then take the derivative of each part of the equation.

**english**

thank you

**english**

Which of the following choices best describes the error in this sentesce? The man is a scientist with a keen sence of observation and who dedicates long hours in the lab. A Misplaced modifier B Fragment C Dangling modifier D Uneven parallelism I chose D

**english**

thank you

**english**

Which of the following is a fragment? A. The dancer floated across the stage. B. The truth can be unpleasant. C. The canoe withe the blue ropes. D. The rams locked horns, and the tourists watched them from far away. I chose C

**English**

thank you

**English**

Each one of the following sentesces contains a cluase.In which sentence is the clause used as an adverb? A. I do not mind fishing, as long as I don't have to bait the hook. B. All of the delegated who have actual opinions should keep silent. C. What you really need is a ba...

**Chemistry**

A 150g potato cools from 100 degrees Celsius to 50 degrees Celsius. If the specific heat capacity of the potato is 2000 j/kg degrees Celsius, how much heat does the potato lose?

**English**

thank you very much

**English**

after doing some more reading and looking at some of these web pages u sent i think the answer is A

**English**

Select the sentence in which all pronouns are used correctly. A. I sat between him and her during the sales conference. B. Just between you and I, I am not impressed by our new manager. C. Be sure to divide all income from the suburban property between he and I. D. I hope shee...

**Physics**

Im sorry but what is the equation to use t in? Im confused by your wording.

**Physics**

From the edge of the rooftop of a building, a boy throws a stone at an angle 20.0° above the horizontal. The stone hits the ground 4.60 s later, 104 m away from the base of the building. (Ignore air resistance.) What is the maximum height H reached by the stone? (I found t...

**Physics**

With your equation, my vertical and horizontal answers are correct, however the equation for T is wrong. Any other suggestions?

**english**

In the following sentence, what is the subject complement? My neighbor is a newspaper reporter.

**Finance **

On January 1, 2011 you bought a two-year U.S. government bond with a principal (face value) of $1000 and a coupon rate of 6% with coupons paid on December 31, 2011 and December 31, 2012. The principal will be repaid on December 31, 2012. The Consumer Price Index (CPI) was 120 ...

**chemistry**

What mass in kilograms of E85(d = 0.758g/mL) can be contained in a 11.5gal tank?

**history**

thank you

**history**

A. stopping the Vietnam War. B. supporting the nonviolent strategies of Martin Luther King, Jr. C. expanding voting rights. D.expanding economic opportunity. i chose D

**history**

During the tubulence of the 1960s black activism focused primarily on

**math**

why can you simplify 5(50+3) using the distributive property? why can't you simplify 5(50)+ 3 using the Distributive property?

**history**

The _______ damanded that Latin American countries keep their financial affairs on order or risk intervention by the United States

**history**

The _________ expressed the darkest and most ominous aspect of the rural counterattact of the earlt 1900s.

**history**

During the election of1936, declaring their party a "millionair's union," Franklin Roosevelt focused maimly on defending the

**history**

The presidential election of 1928 pitted Al Smith of New York against.

**ap geometry**

JM=MK=JK/2 x/8 = (3x/4-6)/2 x/8 = (3X/4-24/4)/2 x/8 = 3x/8 - 24/8 x = 3x - 24 x-3x = -24 -2x = -24 x = 12 12/8 = 1.5 = JM = MK

**geometry**

a Street in san franscico has a 20% grade-that is it rises 20' for every 100' horizontally. Find the angle of elevation of the street?

**math**

a. Cost = $30.00 + h x $x $30 initial fee plus number of hours times the cost per hour. b. The value of the dimes can be written as $0.10 x d (the number of dimes). The number of nickels can be written as 4 times the number of dimes (4d) but the value is written as $0.05 x 4d....

**speech writing**

Which has a subject complement? A) The day ended with many surprises B) We can't leave without seeing her. C) The nurse felt my pulse D) I felt much better

**Algebra**

Since the annual interest is 3%, multiply the principle by 1.03 to get the amount of the principle plus the interest earned. Then, just use the new principle amount. Here's the amounts for 10 years. 1st year - $300.00 x 1.03 = $309.00 2nd year - $309.00 x 1.03 = $318.27 3r...

**Discrete Math**

You came up with everything I came up with. I, too, believe something must be incorrect. I met with my professor today, and showed him my 25+ pages of attempts at solving it. He didn't want to go through the whole thing, but said it had to do with focusing on showing (QvS)...

**Discrete Math**

Statements P->Q, ~R->(S->T), R v(P v T), and ~R are true. What is the truth value for the statement, (Q v S)?

**chem**

For a mixture of 12.0mL of 0.004. M AgNO3 and 8.0mL of 0.0025 M K2CrO4, a colorimetric measurement of CrO4-2 in the equilibrium supernatant liquid found its concentration to be 1.5*10^-4 M. Calculate the Ksp of Ag2CrO4.

**math**

lisa rolls a number cube two times. the first time she gets a 3. list all the possible outcomes of lisa's two rolls.

**Physics**

I thought frequency is 1/T . T as in Period. ..

**Physics**

Find the frequency in Hertz (Hz) for the following situations: a) a basketball team scores 40 points in 300s b) a tuning fork vibrates 2000 times in 2s c) a boat bobs up and down 20 times in 5 minutes

**Physics**

A car of mass 1880 kg is speeding up on level ground. Its position as a function of time is x(t)=Att1+t41t4 where A=527 m and t1=51 s. What is the magnitude of the net impulse on the car from t=0 to t= 0.5 s?

**math**

No idea

**college physics**

A 0.50-kg block slides along a small track with elevated ends and a flat central part. The flat part has a length L = 1.85 m. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is 0.103. The block is released from rest ...

**CHEM**

Consider the reaction, 3 NO2(g) + H2O(l) ® 2 HNO3(aq) + NO(g), where DH = – 137 kJ. How many kilojoules are released when 92.3 g of NO2 reacts?

**Chemistry**

It's fine! I really appreciate your help! :)