Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 70,622

**Math**

Just multiply.

**Algebra 2**

The chief designer for a large automobile company is considering 4 different radiator grills, 2 different style of headlights, and 5 different rear fender designs. If an automobile style consists of a grill, headlight, and rear fender, how many different styles of automobiles ...

**Math**

Triangle L'M'N' is a dilation of triangle LMN. If the scale factor of the dilation is 1/5, which of the following statements is true? Triangle L'M'N' is a rotation of triangle LMN. Triangle L'M'N' is the same size as triangle LMN. Triangle L...

**Social Studies**

My book says that convicts were sent to Australia, and that more of the British came after gold was discovered in 1851. Is it C?

**Social Studies**

Which of the following was likely motivation for why colonists were even sent to Australia in the first place? A. to have people from the royal family go and colonize Australia. B. to send explorers who wanted to go because of monetary incentives. C. to send convicts to an iso...

**English**

Which literary movement consists of honest and open descriptions the setting and characters?

**Math**

The trapezoid above has a base of 38 m and a height of 12 m. Which set of dimensions would produce a similar figure? A. base = 114 m, height = 36 m B. base = 38 m, height = 36 m C. base = 119 m, height = 36 m D. base = 109 m, height = 36 m

**Check my answers!**

1. Which of the following types of joints allows the type of shoulder motion needed by a baseball pitcher to pitch a fastball in a baseball game? pivot *** gliding hinge ball and socket 2. Which of the following pairs of joints represents the same type of joint? neck and knee ...

**ALGEBRA**

Thanks much

**ALGEBRA**

A gardener is mowing a 20 by 40 yard rectangular pasture using a diagonal pattern. He mows from one corner of the pasture to the corner diagonally opposite. What is the length of this pass with the mower? Give your answer in simplified form. The multiple choice answers won'...

**Math**

Rectangles ABCD and EFGH are similar figures because angles A, B, C, and D are congruent to angles E, F, G, and H, respectively. If DA equals 19 units, AB equals 8 units, and HE equals 133 units, what does EF equal? A. 56 units B. 122 units C. 7 units D. 315.88 units

**math**

The shadow of a 5-foot tall post is 10 feet long. At the same time a tree casts a shadow that is 24 feet long. What is the height of the tree? A. 2 feet B.14 feet C. 12 feet D. There is not enough information to solve the problem

**math**

(-2x)^-6

**math**

A▲b = 2a-3b then 2▲(-3)=

**math**

(a^4b^6)^0

**ALGEBRA**

thank you Steve for explaining it like this I understand a little better. Have a good evening.

**math**

Vanessa typically works 8 hours per day in a normal 5 day work week. Last week however vanessa had to take 90 minutss off on tuesday 45 minutes off on Thursday and she left rwo and a half hours early on friday how many hours did vanessa work last week

**math**

Jen and jacob want to put a cement deck around their pool. if the cement cost $4.75 per square foot, how much is the cost of the deck? round to the nearest hundreth.

**Math**

Your uncle has 36 coins in nickels and quarters. The value of his nickels is 1/15 of the value of his quarters. Find the number of nickels. Please show progress in answer.

**geometry**

Bob's Barricades rents orange plastic cones to use as barricades in road construction. Each cone is 24 inches high with a diameter of 14 inches. A gallon of orange paint will cover approximately 400 square feet. About how many whole gallons of paint will Barb need to paint...

**physics**

A 60.0 kg box is lifted straight upward by a rope, a distance of 10.0 meters, at constant speed. How much power is required to complete this task in 5.00 seconds?

**precalculus sem 1 **

for the polynomial shown below, find (1) f(x)=3x^4-x^2+4x-2

**math**

Problem Solving and Explain. The 52 students from Babcock school were divided into 9 squads for the Coast Trip . There are 25 parents including teachers attending. If we need to purchase 2 cookies for each person to eat for 2 nights, how many dozen cookies will wee need to buy...

**Math**

Problem: The 52 students from Babcock school were divided into 9 squads for the Coast Trip . There are 25 parents including teachers attending. If we need to purchase 2 cookies for each person to eat for 2 nights, how many dozen cookies will wee need to buy for the Coast Trip?

**Social Studies**

Is there a better answer?

**Social Studies**

How did British colonial practices in South Asia reflect the East India Company's practices? A. Tea and coffee were harvested and spices were traded by the East India Company, from which the British wanted to make India a colony. B. Under British colonialism, the East Indi...

**Social Studies**

How do monsoon winds impact South Asia? A. Rain is carried from the Arabian sea to India from June-September. B. Rain is carried from the Bay of Bengal to Bangladesh and India. C. Rain is carried from the Arabian Sea to Pakistan and Afghanistan. I think A, but C is pretty close?

**Social Studies**

Farmers who farm in the northern Indo-Gangetic plain in South Asia rely more massively on A. drenching rain brought by cool air B. essential moisture brought by monsoons C. water carried by rivers which comes from the Himalayas. C?

**Social Studies**

Because of the rich soil, migration has taken place to South Asia's A. gorges in the mountains B. Himalayas C. plateau regions D. flood plains D?

**Maths**

It is across from the 90 degree angle

**Math homework help**

Use half angle identities to find exact value. Given tan theta = -sqrt 2 / 2 and theta lies in quadrant IV, find cos theta / 2.

**ALGEBRA**

Which set of lengths could be the side lengths of a right triangle? (1 point) • 20 cm, 22 cm, 29 cm • 10 ft, 12 ft, 15 ft • 7 km, 24 km, 28 km • 13 in, 84 in, 85 in

**Math**

What amount should be accepted as equivalent, 60 days before an obligation of $1480 is due, if money can earn 6 3/4%?

**CHEMISTRY HELP !!!!**

The first time i tried this question I got 3.3 x 101 g and I recalculated it I got 3.0 x 102 g. That's why I was confused which one to pick.

**CHEMISTRY HELP !!!! **

Al3+ is reduced to Al(s) at an electrode. If a current of 2.75 ampere is passed for 36 hours, what mass of aluminum is deposited at the electrode? Assume 100% current efficiency. a. 9.2 x 10–3 g b. 3.3 x 101 g c. 9.9 x 101 g d. 1.0 x 102 g e. 3.0 x 102 g I think it is eit...

**Trig**

Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.

**Trig**

Use the given information to evaluate sin (a-b). Exact answers. No decimals. Sin a = -7/25, cot b = 8/15; neither a nor b are in quadrant III.

**social studies**

After capturing Washington, the British attacked what city, which they failed to capture? New York, Statton Island

**Trig**

Use the given information to evaluate sin (a+b). Exact answers only. No decimals. Tan a = 4/3, cos b ='-12/13; neither a nor b are in quadrant III.

**Algebra**

Pls help me with these problem solving sums ----------------------------------------- 1)You are building a rectangular brick patio surrounded by crushed stone in a rectangular courtyard.The crushed stone border has a uniform width x (in feet) you have enough money in your budg...

**Trig**

Simplify each expression using fundamental identities. 1. Sin theta cot theta 2. 1-sin^2 theta / cos theta

**math**

Solve the problem. An average library contains at least 50 and at most 250 books. How many library owners must be polled to be certain that at least two owners have the same number of books in their libraries?

**chemistry**

If 15.0 grams of Iron (III) oxide reacts with 25.0 grams of Strontium phosphate, how many grans of Iron (III) phosphate will be produced?

**Social Studies**

1. During the War of 1812, the Americans were fighting for a) self-government b) freedom of the seas c) freedom from England Answer is B 2. The Americans were most successful on a) sea b) Lake Champlain and Lake Erie c) on land Answer: B 3. The English were most successful on ...

**math**

Use the graph below to answer the following question. 1. Find the slope. (1 point) 2 – –2 Use the graph below to answer the following question. 2. Find the slope of the line. Describe how one variable changes in relation to the othe...

**Social Studies**

After capturing Washington, the British attacked what city, which they failed to capture? New York, Statton Island

**Check my answers :(**

1.A 2.? 3.B

**Check my answers :(**

A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on? photo of a man climbing a rock wall All of the muscles in his arm contract to hold his arm in position. His arm muscles work in pairs so that one cont...

**CHEMISTRY HELP !!!!**

What is the formula for dicyanobis(ethylenediamine)zirconium(IV) nitrate? a. Zr[(CN)2(NO3)2(en)2] b. [Zr(CN)2(NO3)2(en)2] c. (NO3)2[Zr(CN)2(en)2] d. [Zr(CN)2(en)2](NO3)2 e. [Zr(NO3)2(en)2](CN)2 Sorry, I think the multiple choice part didn't show up.

**CHEMISTRY HELP !!!! **

what is the formula for dicyanobis (ethylenediamine) zirconium (IV) nitrate? Thanks!!!

**Help ASAP, plz?**

A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on? photo of a man climbing a rock wall All of the muscles in his arm contract to hold his arm in position. His arm muscles work in pairs so that one cont...

**Physics**

dont know

**Physics**

A 0.50 kg pendulum is pulled back and released. When the height is 0.60 m above its equilibrium position its speed is 1.9 m/s. What is the maximum height of the pendulum?

**Algebra**

a/(a+3) = (2a)/(a - 3) - 1

**Physics**

A mass vibrates at the end of a horizontal spring (k=125 N/m) along a frictionless surface reaching a maximum speed of 7.0 m/s. If the maximum displacement of the mass is 85.0 cm, what is the mass?

**Physics**

The speed of a hockey puck (mass=100.0 g) decreases from 45.00 m/s to 42.68 m/s in coasting 16.00 m across the ice. a) How much thermal energy was produced? b) What frictional force was acting on the puck?

**Physics**

A 75 g arrow is fired horizontally. The bow string exerts an average of 65 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow string?

**Physics**

A 75 g arrow is fired horizontally. the bow string exerts an average force of 65 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow string?

**science 3 questions**

A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on? photo of a man climbing a rock wall All of the muscles in his arm contract to hold his arm in position. His arm muscles work in pairs so that one cont...

**chemistry**

help

**chemistry**

A silver block, initially at 59.4∘C^\circ C, is submerged into 100.0 g{\rm g} of water at 25.3∘C^\circ C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 27.6∘C^\circ C.

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, 181...

**Science**

In which way does the circulatory system rely on the skeletal system? Glucose is secreted by compact bone as an energy source for blood. Spongy bone stores minerals needed by blood cells. Bones provide a source of oxygen to blood. Blood cells are produced in bone marrow.

**Trigonometry. **

Use the given information to evaluate cos (a-b). Cot a = 3/4, cot b = 24/25; pi<a<3pi/2, 3pi/2<b<2pi.

**Trigonometry**

Verify the identity. (Cos x - sin x)^2 + (cos x + sin x)^2=2

**Trigonometry**

Simplify each expression using the fundamental identities. 1. Sec x csc x / sec^2x+csc^2x 2. Sec x + tan x / sec x + tan x - cos x

**English**

I have to write a critical essay on Hamlet and I can't find a good topic to write about. I need something that will be easy because I am not good in writing essays that are more elaborate. Can somebody suggest a good topic that will be easy to write about in approximately ...

**Social Studies**

It's not that far from New York.The Appalachian Mountains aren't in the way but The Hudson River is.

**Social Studies**

Driving to Corning, NY from New York City, NY and walking from Corning, NY to Goat Island, Niagara Falls, you wouldn't cross any bodies of water, mountains, or deserts? Right? I searched but I didn't get anything, I just want to make sure.

**Math**

Use the given information to evaluate cos (a+b). Sin a = -7/25, cot b = -8/15. Neither a nor b are in quadrant IV. exact answers only. No decimals.

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, 181...

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, 181...

**math**

lou makes pancakes at a pancake house. he makes 12 pancakes in 4 minutes. at a rate, how long would it take him to make 54 pancakes

**MATH**

It is estimated that 17% of americans have blue eyes. A random sample of 9 americans is selected. 1. Find the mean number of blu-eyed people in a sample of 9 americans.

**social studies**

1. what name did the people give to the good ship "Constitution"? Answer: Old Ironsides 2. Andrew Jackson is often spoken of by what nickname? Answer: King Mob 3. England's practice of forcing our sailors to serve in her navy was called what? Answer: impressment ...

**Math**

a/(a+3) = (2a)/(a - 3) - 1

**social studies**

what land did the United States gain from the War of 1812? Was it Florida or Detroit

**science**

My answers are in the brackets Nitrogen is cycled through an ecosystem by both plants and ?(animals). Decomposers break down dead organisms and their waste products to release ?(ammonia) in a process called ?(nitrification) These ?(decomposers) can then be used by plants to ma...

**science**

Nitrogen is cycled through an ecosystem by both plants and ?(animals). Decomposers break down dead organisms and their waste products to release ?(ammonia) in a process called ?(nitrification) These ?(decomposers) can then be used by plants to make amino acids. The process of ...

**STAT**

it is estimated that 17% of americans have blue eyes. A random sample of 9 americans is selected. Find the probability that the sample includes exactly 2 people with blue eyes. Find the probability that the sample includes at most 2 people with blue eyes. Find the mean number ...

**English 10B**

Which of the following conclusions about the speaker is best supported by the ideas and information in "From Emperor to Citizen?"

**stat**

it is estimated that 17% of americans have blue eyes. A random sample of 9 americans is selected. Find the probability that the sample includes exactly 2 people with blue eyes.

**S.S**

2A 1D?

**S.S**

3A 2D 1B

**S.S**

1.The three main geographic regions of Peru are the A. sierra, the rain forest, and the plateau B. pampas, the rain forest, and the montaña C. selva, the sierra, and the pampas D. sierra, the coastal plain, and the selva 2.When oil prices fell in the mid-1980s, Venezuel...

**Data Structure**

But the question above state that a group of k villagers. can we assume that only 1 villager row over?

**Data Structure**

But the question above state that a group of k villagers. can we assume that only 1 villager row over?

**Chem Check Please!!!**

Calculate for the electrochemical cell below, Ag(s) | AgCl(s) | Cl–(aq) || Cu2+(aq) | Cu(s) given the following standard reduction potentials. Cu2+(aq) + 2 e– -> Cu(s) E = +0.337 V AgCl(s) + e– -> Ag(s) + Cl–(aq) E = +0.222 V a. –...

**Chem Check Please!!!**

1) As bound ligands, which of the following causes the largest splitting of d-orbitals? a. phen b. H2O c. I– d. CN– e. C2O4^2– Answer D 2) The spectrochemical series a. lists ligands in order from monodentate to hexadentate. b. lists ligands in the order of thei...

**Chem Check Please!!!**

If an octahedral iron(II) complex is diamagnetic, which of the following sets of conditions best describes the complex? a. low-spin, Delta 0 small b. low-spin, Delta 0 large c. high-spin, Delta 0 small d. high-spin, Delta 0 large e. none of these Answer C or D not sure

**Chem Check Please!!!**

All of the following statements concerning crystal field theory are true EXCEPT a. in low-spin complexes, electrons are concentrated in the dxy, dyz, and dxz orbitals. b. in an isolated atom or ion, the five d orbitals have identical energy. c. low-spin complexes contain the m...

**Chem Check Please!!!**

In an octahedral complex, electrons in dz^2 and dx^2-y^2 orbitals experience a greater repulsion from the lone pairs of electrons on ligands because these orbitals a. contain more electrons than the other three d orbitals. b. each contain one unpaired electron. c. are oriented...

**CHEMISTRY HELP !!!! **

What is the name of the compound having the formula [Cr(en)2(H2O)2]SO4? a. dihydroxydiethlyenediamminechromate(2) sulfate b. diaquabis(ethylenediamine)sulfatochromate(4) c. bis(ethylenediamine)diaquachromium(2) sulfato d. diaquabis(ethylenediamine)sulfatochromium (2) e. diaqu...

**chemistry**

How much heat energy is needed to change the temperature of 25.00 mL of water from 5.0°C to 75.0°C? The molar heat capacity of water for this process Cp = 75.38 J/(mol °C), d = 1.00 g/mL.

**physics**

Low E on a guitar vibrates at 82.4 Hz and the guitar is 62.8 cm long. How long would the same string have to be to vibrate at high E 329.6 Hz. Assume that both strings vibrate at the fundamental frequency for the string.

**history 11th grade**

What are the perils of the amazon rain forest?

**Physic**

r = 0.23m m = 3.8kg d = 1.37m t = 2.2s y = -Vot + 1/2at^2 1.37m = 0 + 1/2a(2.2s)^2 a = 1.37m / 2.42s^2 a = 0.57m/s^2 T = -(3.8kg)(0.57m/s^2) + (3.8kg * 9.8m/s^2) T = -2.17N + 37.24N T = 35.07N Fy: Py - T = m1α T = Iα rT = cmr^2α (0.23m)(35.07N) = m2(0.23m)^2 * (...

**Physic**

A massless rope is wrapped around a hollow cylinder of radius 23 cm whose central axis is fixed in a horizontal position. A mass of 3.8 kg hangs from the rope and, starting from rest, moves 137 cm in 2.2 s. What is the mass of the cylinder? (Answer: 62kg) Answer is provided ab...

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