Friday

July 25, 2014

July 25, 2014

Total # Posts: 553

**Math**

Find the number of units that produces a maximum revenue. The revenue R is measured in dollars and x is the number of units produced. R = 80x – 0.0001x^2

**physics**

An astronaut on Triton throws a 0.142 kg baseball straight up with a velocity of 24 m/s. How high does the baseball go?

**Math 8th Grade!!!!**

27 - (-9) (-2) ÷ 3 * (-4) - 0 - 33 - (-39)

**Math 8th gr.**

Tysm!

**Math**

In triangle PQR, <R=90 degrees, <Q=10 degrees and RQ=16 cm. Find PR.

**Quick Question**

Okay, thank you.

**Quick Question**

I am trying to find an online radio podcast that middle school students can use to host their own radio show. Can you help me research some?

**Math**

Oh okay. Thank you. I appreciate it.

**Math**

John spoke to his friend from 10:15am-11:00am. And then John spoke to that same friend again from 12:30pm-1:15pm. altogether, how many minutes did John speak to his friend? How do I figure this out?

**Math**

For the graph y find both x-intercepts by solving the equation 3x^2 - 24x + 45 =0 a) Direction of opening b)y-intercepts c)Axis of symmetry d) vertex e) max or min

**math**

For the graph y find both x-intercepts by solving the equation 3x^2 - 24x + 45 =0

**Math**

the answer is 2 5/6

**College science**

Im in Chem. but looks like physics.. If a rock climber accidentally drops a 70.5 g piton from a height of 295 meters, what would its speed be just before striking the ground? Ignore the effects of air resistance.

**physics..**

What is the maximum height achieved if a 0.800 kg mass is thrown straight upward with an initial speed of 40.0 m·s–1? Ignore the effect of air resistance.

**Chemistry**

alright, thanks lol

**Chemistry**

Thats what it looks like.. but im taking chem. in college and have never had a physics course, im really lost.

**Chemistry**

What is the maximum height achieved if a 0.800 kg mass is thrown straight upward with an initial speed of 40.0 m·s–1? Ignore the effect of air resistance.

**Chemistry**

Thank you x)

**psychology**

where does spanking fall between punishment and discipline

**Geography HELP**

HOw do I explain how you would make a scale map of a room in your home.

**Calculus Fundamental Theorem**

Thank you!

**Calculus Fundamental Theorem**

Evaluate the definite integral. function: (t+8)(t^2+3) with respect to variable t lower limit: -sqrt(2) upper limit: sqrt(2)

**Calculus Fundamental Theorem**

Original problem was: absolute value x-13, because of absolute value I made it x+13

**Calculus Fundamental Theorem**

I tried that way, my answer was wrong

**Calculus Fundamental Theorem**

Evaluate the definite integral. function: x+13 with respect to variable x lower limit:0 upper limit:22

**Calculus Sigma Notation **

Find a and n such that: 8+16+32+64+128 (k=a) a=? n=?

**Calculus-Antiderivative **

Solve the following initial value problem: dr/dt=7cos(pi(t)), r(1/4)=14 r(t)=?

**Chemistry**

explain why glucose 1,6 bisphosphate would not be able to go through the aldolase reaction.

**Chemistry**

Explain using electron-pushing arguments why glycolysis must go through G6P to F6P step (C1 aldehyde to C1 ketone). Focus on the subsequent aldolase-catalysed reaction and explain why glucose 1,6 bisphosphate would not be able to go through the aldolase reaction.

**Chemistry**

Explain using electron-pushing arguments why glycolysis must go through G6P to F6P step (C1 aldehyde to C1 ketone). Focus on the subsequent aldolase-catalysed reaction and explain why glucose 1,6 bisphosphate would not be able to go through the aldolase reaction.

**Math, HELP!! UGENT!**

Find the value of k so that the line containing the points (−8,8) and (2,k) is perpendicular to the line containing the points (14,−8) and (9,−6).

**math**

the lengths of the three sides of a right triangle R have odd integer values and two of the three sides have lengths 3 and 5. What is one possible length of the third side?

**Calculus**

Evaluate ∬R xy dA, where R is the region bounded by x^2+y^2≤36, x≥0 and y≥0.

**Chemistry**

Calculate Activation Energy, Ea, for each of the reactions, above? ln(k)= -2.24x10^4(1/T)-1.8. The reactions are Step 1: 2H2 + N2 -> N2H4, Step 2: N2H4 + H2 -> 2NH3, Overall: 3H2 + N2 -> NH3. This is all the information i have. i Don't know how to solve for the Ac...

**Math**

(-3xy^2)^2(-2x^5y^3)^3

**Literature**

In order to get an idea of significant subject areas in a chapter, it is best to read the: A. subheads. B. graphics. C. captions. D. table of contents.

**Physics**

nearly everybody has witnessed a lunar eclipse, but relatively few people have seen a solar eclipse? why

**Math 7th Geometery**

yes hieght is 12m Yes 3 rectangles. yes two outside ones equal 31 by 23 Yes smaller one at the base is 23m Yes all right. your awesome! This was a tough one for me. But you helped me see where I was confused. Thank you so much.

**Math 7th Geometery**

I have a complex figure like a U shape. I understand the formula for this is l x w = a Can you show me the steps? 31m is parael to 31m this would be the height (sides of the U)?? or is this the width? Length 69m Width is on the right top of U 23m. Inside the middle of the U23...

**Justice**

The correct answer is letter C

**chemistry**

What is the molar concentration of sodium ions in a 0.450 M Na3PO4 solution?

**Trig**

Thank you very much!

**Trig**

How exactly do you get there though? I tried to follow a similar homework problem and got: = (cos^2)*(67.5deg) - (sin^2)*(67.5deg) = cos(2*67.5deg) = cos135deg = -√2/2

**Trig**

Simplify (sin^2)*(67.5deg) - (cos^2)*(67.5deg) and then evaluate exactly.

**math**

you shared a pizza with two friends You ate 1/8 of the pizza.One of your friends ate 5/8 of the pizza and the other ate 1/8 of the pizza. What fraction of the pizza did you and your friends eat?

**US History**

What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee Im thinking two Supreme Court decisions?

**US History**

What did the Supreme Court cases and the ultimate outcome for the Cherokee suggest about future dealings between the United States government and Native Americans? (3 points) The U.S. government would most likely follow the rule of law and abide by court decisions. The U.S. go...

**US History**

Im thinking its The British territory was smaller than that of the U.S?

**US History**

A treaty was signed in 1842 to end the border dispute between the United States and Britain in Maine. Which best expresses the end result for Britain? the British lost all the territory in Maine The British territory was bigger than that of the U.S. The British territory was s...

**US History**

countries

**US History**

so to warn the european colonies?

**US History**

I really don't know. I was taking Wold history before i moved and now i have a a review sheet on stuff i havent even learned. a?

**US History**

Which answer best describes the main purpose of Monroe Doctrine? to claim new United States territories in the West to warn European countries to stop colonization in the Western Hemisphere. to express that American politics and ideals were superior to encourage Americans to m...

**US History**

to establish a line between slave and non slave states?

**US History**

What was the goal of the Missouri Compromise? to create a slave state and a non-slave state to create a free state where fugitive slaves could live to establish a line between slave and non-slave states to settle a disagreement between Missouri and Arkansas

**US History**

What was the goal of manifest destiny? to expand America's borders to remove Native Americans to create an alliance with Mexico to move settlers west beyond the Appalachians

**US History**

the removal act isnt even an option. i honestly thought about it.

**US History**

Acts of Congress? Weren't the congress against the Indians and all that?

**US History**

What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee

**Chemistry**

Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 17.3 g of biphenyl in 34.0 g of benzene?

**Physics HELP PLEASE**

If 10-kg of ice at 0 degrees Celsius is added to 2-kg of steam at 100 degrees Celsius, the temperature of the resulting mixture is? Use Joules. ANSWER: 40 Specific Heats: Ice = 2060 Steam = 2020 Latent Heats: Water melting = 3.33x10^5 Water boiling = 2.26x10^6

**math**

A family group of 6 went to a show. Tickets for adults are $6. Tickets for children are $4 dollars. The family spent $30 dollars on tickets. How many adult and children tickets did they buy?

**chemistry**

If 145 J of heat energy is applied to 34.47 g of an unknown metal, the temperature increases from 61.0 degree C to 78.5 degrees C. What is the specific heat capacity of the unknown metal?

**Chemisty **

If 1 gram of sugar is 4 Calories(kcal) how many calories are in one sugar cube

**math HELP!**

Kara's custom tees experienced fixed costs of $300 and variable costs of $5 a shirt. write and equation that can be used to determine the total expenses encountered by kara's custom tee's. Let x be the number of shirts and let C(x) be the total cost of producing x ...

**math**

evaluate f(x) at the given values of x. f(x)=2. x=-11,5/2

**math**

find the slope intercept form for the line satisfying the following conditions: y-intercept=2 y-intercept =2/3

**math**

a certain mountain has an elevation 19580 feet in 1907 the glacier on its peek covered 8 acres by 2002 this glacier had melted to 1 acre assume the glacier melted at a constant rate each year find this yearly rate

**art**

thnks

**art**

h t t p://w w w .s h u t t e r s t o c k . c o m / p i c -2 2 2 3 0 9 2 8/s t o c k -p h o t o-e a g l e-a n d-f l a g-o n-u n i t e d-s t a t e s-f l a g.h t m l it is eagle.

**art**

it has six stars

**art**

well it is not online. i cannot upload it.

**art**

do you know name of this picture? it is dragon flying and kind of holding the flag which is of united states and it has six flags. and up it has curve. it is symbol please help me.

**physics**

A wave travels 750 meters in 5 minutes. Its wavelength is 16.1 meters. What is its period?

**AP Physics B**

A 1.2 kg rectangular air mattress is 2.1 m long, 0.46 m wide, and 0.09 m thick. If it has a mass of 1.2 kg , what additional mass can it support in water?

**math**

invest 5% compounded semiannually I want to have 23,000 in the future how much I will deposit now to have that amount 5 years from now

**science**

list two things that car manufacturers do to improve a car's efficiency

**math**

when 5/8x + 1 1/3 is subtracted from 1 1/4x - 5 1/6 the result is?

**science**

You freeze 92g of water, and it becomes a cube of ice. a. What is the mass of the ice cube? b. The cube's volume os 100cm3. What is it's density? c. Will the ice cube float or sink in water?

**Math**

Jillian wants to organize her CD collection into wooden crates. Each crate holds 8 CDs. Jillian has 48 CDs. How can she use a picture to figure out how many crates she needs?

**Calculus**

The police department must determine a safe speed limit on a bridge so that the flow rate of cars is at a maximum per unit time. The greater the speed limit, the farther apart the cars must be expected to be in order to allow for a safe stopping distance. The total distance ne...

**arrays and expanded algorithm**

hi dont understand this i need help

**maths**

the floodlight is 6.1m tall. Jonny's height is unknown,though his shadow is 2m long when he stands 3m from the base of a floodlight. What is the height of jonny?

**Maths**

There are 36 pupils in a class. Each girl is given 8 books and each boy is given 3 books. The total number of books the girls receive is 46 more than the total number of books the boys receive. How many girls are there in the class? The ratio of the number of boys to that of g...

**Business**

Which of the following is typically included in a stock listing? The company's SEC registration credentials The predicted price of the stock over the next year The number of shares of stock sold in a previous day The number of shares of stock sold in the previous year

**Geometry**

Not all of them are correct. Halloween is not a season. Here's one correction: ~s \/ h = true, should be FALSE. ~s = Spring is not a season. That is false. h = Halloween is a season. That is also false. \/ stands for "or," or disjunction. According to the truth t...

**maths**

adding fractions

**maths, algebra**

can you show me the work for my homework

**history**

my mom

**physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 33.0 m/s and an initial vertical velocity of 25.0 m/s. What is the initial speed of the cannonball?

**math**

the sum of 16 and 3 is greater then the product of 9 and 2

**Geometry**

a+b = the absolute value a + b

**Statistics/Math**

wef

**Calculus 1**

Derivative of 7^(SinX)... something to do with log/ln?

**chemistry**

How do I balance a redox reaction for NaI + H2SO4 = H2S + I2 + Na2SO4 + H2O? I don't understand how to balance the electron loss for Iodine.

**Chemistry**

Would water-insoluble alcohols, like 1-octanol, be soluble in aqueuous NaOH?

**Chemistry**

Would water-insoluble alcohols, like 1-octanol, be soluble in aqueuous NaOH?

**chemistry**

How much AgNO3 is needed to prepare a 0.282 m solution in 425 mL of water? Answer in units of g

**Physics 121**

Please do show how you do it. TQ

**Physics 121**

The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis th...

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