# Austin

Most popular questions and responses by Austin-
## Math

Ms. Sue please help! A radio signal travels at 3.00 • 10^8 meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 3.54 • 10^7 meters? Show your

*asked on June 10, 2014* -
## history

Drag the words to the boxes in the sentences. Burmese Khmer porcelain reservoirs Indonesia Mekong By the ninth century, the empire had emerged in eastern Indochina. It developed around agriculture and used to store water. To the south, the Srivijaya empire

*asked on November 14, 2018* -
## Math

Top ten scores on a quiz in two classes are listed below Class A 100,100,100,90,95,85,92,98,92,88 class B 100,100,98,95,95,96,95,92,81,88 which statement is true concerning the data a. the mode is the same for both classes b. the range is the same for both

*asked on May 19, 2014* -
## Science

Ms. Sue please help. 8. Which would best reduce the amount of energy needed to pull a wagon up a ramp? (1 point) increasing the slope of the ramp reducing the friction between the wagon wheels reducing the length of the wagon handle increasing the friction

*asked on June 6, 2014* -
## Physical education

Five branches of physical education

*asked on August 3, 2018* -
## spelling

what is the answer to this analogy brother:mother::fly:???? must start with the letters scr,spr,str,or thr brother:mother:fly brother:mother::fly:???? must end with scr, spr, str, thr brother:mother::fly:???? must end with scr, spr, str, thr i don't know i

*asked on January 16, 2007* -
## Algebra 2

An object is dropped from a small plane. As the object falls, its distance, d, above the ground after t seconds, is given by the formula d = –16t2 + 1,000. Which inequality can be used to find the interval of time taken by the object to reach the height

*asked on July 10, 2015* -
## History

Ms. Sue please help! 3. Read the passage and answer the question that follows: Many slaves preferred not to escape their horrible lives on plantations because their families were often with them. Despite the fact that slaves had no rights, they often found

*asked on June 1, 2014* -
## Algebra 2

Find the period and the amplitude of the periodic function. y=-4 cos 8x

*asked on May 19, 2014* -
## Math

Ms. Sue please help! 7. Suppose you earned 7t – 1 dollars on Monday and 8t + 5 dollars on Tuesday. What were your total earnings? Simplify your answer. (1 point) –t + 4 dollars –t – 6 dollars 15t – 6 dollars 15t + 4 dollars 8. f 2 ∙ f 3 (1

*asked on June 10, 2014* -
## math

The cost of one pound of peanuts is 60% of the cost of one pound of cashews. If one pound of cashews costs $2, what is the cost of one pound of peanuts? What is the total cost of two pounds of peanuts and one pound of cashews?

*asked on February 2, 2015* -
## Chemistry

Hydrazine, N2H4, is a colorless liquid used in rocket fuel. What is the enthalpy change for the process in which hydranzine is formed from its elements? N2(g) + H2(g) => N2H4(l) Use the following reactions and enthalpy changes: N2H4 + O2 => 2H2O DeltaH =

*asked on September 10, 2008* -
## science

hello i need help Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on

*asked on March 12, 2018* -
## Language Arts

(Use the passage to answer the question.) 8. Read lines 5 – 9 from “The Olympic Swimmer.” Swimmers swivel, splash, and kick Back and forth in a clear, blue pool; Like fish at play in Neptune’s sea. Swimming relaxed, and calm, and free. These stars,

*asked on December 5, 2016* -
## physics

A LiBr molecule oscillates with a frequency of 1.7×1013 Hz. (a) What is the difference in energy in eV between allowed oscillator states? (b) What is the approximate value of n for a state having an energy of 1.0 eV?

*asked on November 28, 2013* -
## Chemistry

Calculate the entropy change when 2.42 g of H2 reacts with O2 according to the reaction 2 H2(g) + O2(g) → 2 H2O(ℓ) at 298 K and 1 atm pressure. The standard molar enthalpy of formation of H2O(ℓ) at 298 K is −285.8 kJ/mol. The corresponding free

*asked on October 14, 2012* -
## algebra

Write the standard form of the line that passes through the given points. Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution. (3, 1) and (-2, 3)

*asked on February 9, 2016* -
## physics

(a) If the first-order maximum for pure-wavelength light falling on a double slit is at an angle of 10.0º, at what angle is the second-order maximum? (b) What is the angle of the first minimum? (c) What is the highest-order maximum possible here?

*asked on November 28, 2013* -
## Chemistry

Calculate the value of ΔS when 1.10mol of Br2(l) is vaporized at 58.8 ∘C

*asked on April 2, 2015* -
## Chemistry

The combustion reaction for benzoic acid C6H5CO2H(s) + 15 2 O2(g) → 7 CO2(g) + 3 H2O(ℓ) has ∆H0 = −3226.7 kJ/mole. Use Hess’s Law to calculate ∆H0 f for benzoic acid.

*asked on October 7, 2012* -
## science

Now, three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now the elevator is moving downward with a velocity of v = -2.9 m/s but

*asked on October 14, 2018* -
## Chemistry

Briefly outline a procedure you could use to determine the HC2H3O2 concentration in a vinegar sample. What would the pH be at the equivalence point of the titration? Briefly explain

*asked on August 4, 2013* -
## physics

Standing on a balcony, you throw your keys to a friend standing on the ground below. 1.1 seconds after you release the keys, they have an instantaneous velocity of 15.8 m/s, directed 60° below the horizontal. What initial velocity did you give them?

*asked on September 14, 2011* -
## Math

Ava pours 3 gallons of paint equally into 5 cans. How many gallons of paint will there be in each can?

*asked on November 27, 2015* -
## structurlal design 2

15. Sagging in floor joists is typically caused by A. oversized joists. B. undersized joists. C. improper nailing of sub-flooring. D. improper moisture content of the wood i think it's D.

*asked on February 24, 2013* -
## 9th grade (Algerbra)

Why did Grok jump up and down the first time he saw a variable in algerbra class?

*asked on May 17, 2010* -
## physics

The difference in energy between allowed oscillator states in HBr molecules is 0.330 eV. What is the oscillation frequency of this molecule?

*asked on November 28, 2013* -
## chemistry

When 2 moles of K3PO4 is dissolved in water, how many moles of ions are produced? For your answer do not put units, just the numeric value.

*asked on November 14, 2018* -
## math

Mrs. Sue please help! A true-false test has 12 questions. What is the probability of guessing the correct answers to all of the questions? (1 point) 1 over 4096 1 over 144 one over twenty four 1over14

*asked on May 26, 2014* -
## calculus

Some scientists believe that the average surface temperature of the world has been rising steadily. They have modeled the temperature by the linear function T = 0.02t + 8.75, where T is temperature in °C and t represents years since 1900. (a) What do the

*asked on September 3, 2013* -
## Math

7. Suppose you earned 7t – 1 dollars on Monday and 8t + 5 dollars on Tuesday. What were your total earnings? Simplify your answer. (1 point) –t + 4 dollars –t – 6 dollars 15t – 6 dollars 15t + 4 dollars 8. f 2 ∙ f 3 (1 point) f 5 f 6 (2f)5

*asked on June 10, 2014* -
## Income Tax - Accounting. Help Me Please.

Tax Rates, latesha, a single taxpayer, had the following income and deductions for the year 2009. INCOME Salary $60,000 Business Income $25,000 Intrest income(bonds)$10,000 Tax-exempt bond interes $ 5,000 ________ TOTAL INCOME $100,000 DEDUCTIONS: Business

*asked on October 1, 2010* -
## Science

10. Metal cations are atoms that have a positive charge. What type of bond is a metal cation likely to form? (1 point) covalent bond double bond single bond ionic bond my answer is d

*asked on June 4, 2014* -
## Physics

The lens and mirror in the figure below are separated by d = 1.00 m and have focal lengths of +74.8 cm and -42.2 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.

*asked on April 30, 2015* -
## Physical Science

Which of the following materials is useful for making molds because it has a low melting point? 1. wood 2. metal 3. clay 4. wax

*asked on January 26, 2008* -
## Math

A farmer has 54m of fencing with which to build two animal pens with a common side. one pen is rectangular; the other is square. if the area of the pens is to be maximized, what are their dimensions?

*asked on November 12, 2015* -
## physics

Scientists want to place a 3100 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.9 times the radius of Mars above the surface of the planet. Here is some information that will help solve this problem: mmars =

*asked on October 14, 2018* -
## chemistry

A piece of a newly synthesized material of mass 25.0 g at 80.0 ◦ C is placed in a calorimeter containing 100.0 g of water at 20.0 ◦ C. If the ﬁnal temperature of the system is 24.0 ◦ C, what is the speciﬁc heat capacity of this material?

*asked on October 2, 2012* -
## math

by what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude5.3?

*asked on May 14, 2016* -
## chemistry

How much heat is required to heat 28 g of solid silver from 130 ◦ C to liquid silver at 961 ◦ C? The speciﬁc heat of solid silver is 0.235 J/g · ◦ C, and the heat of fusion of silver at its melting point of 961 ◦ C is 11.3 kJ/g. Answer in units

*asked on October 2, 2012* -
## Physics

Completing a lab assignment and was wondering if anyone could look over my work. A 5.0-g mass is sandwiched between two springs with spring constants k1 and k2. The mass is displaced 10 cm from its equilibrium position and makes sixteen complete

*asked on November 6, 2017* -
## economics

Review: Full, Anonymous: No Week 3 Homework Please answer the following questions: 1. The following information describes the value Lori Landlord places on having her five apartment houses repainted. She values the repainting of each apartment house at a

*asked on August 16, 2010* -
## Physical Science

Which of the following is not a pure substance? 1. milk 2. oxygen 3. water 4. carbon dioxide

*asked on January 26, 2008* -
## Statistics

Scores on a mathematics examination appear to follow a normal distribution with mean of 65 and standard deviation of 15. The instructor wishes to give a grade of “C” to students scoring between the 60th and 70th percentiles on the exam. What score

*asked on May 26, 2013* -
## 3rd

things that come in groups of 11

*asked on February 4, 2009* -
## Chemistry

How do I balance chemical equations? Here's an example problem C2H5OH +O2 --> CO2 + H20 Thanks!

*asked on March 13, 2019* -
## English

Is Young Goodman Brown a dynamic character?

*asked on June 13, 2014* -
## History

Which most accurately traces the changing attitudes of the protesters during the year-long Arab Spring demonstrations? The protests began with Egyptian citizens calling for social reforms, but as protests spread, Tunisian fundamentalists urged the adoption

*asked on October 29, 2018* -
## math

How many integers satisfy the inequality \left| \frac { 10(x+1) } {x^2 + 2x + 3 } \right| \geq 1?

*asked on March 26, 2013* -
## Language arts

In which sentence about “Two Kinds” is the word nonchalantly used correctly? The family nonchalantly moved to United States from China. The piano was reconditioned nonchalantly. The daughter nonchalantly announced she was quitting piano. The mother

*asked on September 14, 2017* -
## chemistry

Find the pH of 1.0 x10-8 M KOH solution I tried to find it but i got 6 and that's acidic not basic.

*asked on November 18, 2014* -
## economics

Suppose we have the following market supply and demand schedules for bicycles: Price Quantity Demanded Quantity Supplied $100 70 30 $200 60 40 $300 50 50 $400 40 60 $500 30 70 $600 20 80 Plot the supply curve and the demand curve for bicycles. (Note please

*asked on August 12, 2010* -
## Alg 1

The largest town square in the world is Tiananmen Square in Beijing, China, covering 98 acres. A. 1 sq mile is 640 acres. Assuming that the Tiananmen Square is a square, how many feet long is a side to the nearest foot? B. To the nearest foot, what is the

*asked on November 15, 2011* -
## Math

The sum of two numbers is 70.4. One of the numbers is 9 times the other. What are the 2 numbers?

*asked on April 17, 2015* -
## Math

A plane flying at an altitude of 10,000 feet begins descending when the end of the runway is 50,000 feet from a point on the ground directly below the plane. Find the measure of the angle of descent (depression) to the nearest degree.

*asked on October 29, 2012* -
## economics

Week 3 Homework Please answer the following questions: 1. The following information describes the value Lori Landlord places on having her five apartment houses repainted. She values the repainting of each apartment house at a different amount depending on

*asked on August 14, 2010* -
## chemistry

A .523g sample of a mix of Na2co3 and Nahco3, is titrated with .1 HCl requiring 17 ml to reach the phenolphthalein end point and a total of 43.8 ml to reach the methyl orange end point. What is the percent of each of na2co3 and nahco3 in the mixture?

*asked on December 9, 2014* -
## Algebra 1

Write the equation in slope-intercept form of the line that is parallel to the given line and passes through the given point. Y=2x+1; (5,-1)

*asked on July 16, 2018* -
## Physics

A bathroom heater uses 10.5 A of current when connected to a 120. V potential difference. How much power does this heater dissipate?

*asked on May 23, 2018* -
## 9th grade

What catastrophe makes your kitten happy?

*asked on November 20, 2008* -
## geometry

How do you find the surface area of rectangular prisms and cylinders??????

*asked on March 22, 2008* -
## Statistics

Battery manufacturers compete on the basis of the amount of time their products last in cameras and toys. A manufacturer of alkaline batteries has observed that it's batteries last for an average of 26 hours when used in a toy racing car. The amount of

*asked on November 20, 2013* -
## Math

An 18-carton pack of juice costs $5.67. At the same rate, how much will a 6-carton pack cost

*asked on March 27, 2019* -
## Physical Science

Water is a compound because it 1. a can be broken down into hydrogen and oxygen 2. has a fixed composition 3. is made of water atoms joined together 4. both 1 and 2

*asked on January 26, 2008* -
## Physics

A car can decelerate at -2.47-m/s2 without skidding when coming to rest on a level road. What would its deceleration (in m/s2) be if the road is inclined at 8.7o and the car moves uphill? (Assume the same static friction coefficient.

*asked on September 17, 2017* -
## home inspection

16. Brick ties in brick veneer walls allow for A. water drainage. B. air circulation. *C. expansion. D. inspection.

*asked on February 24, 2013* -
## ACC 233-INCOME TAX

Tax Rates, latesha, a single taxpayer, had the following income and deductions for the year 2009. INCOME Salary $60,000 Business Income $25,000 Intrest income(bonds)$10,000 Tax-exempt bond interes $ 5,000 ________ TOTAL INCOME $100,000 DEDUCTIONS: Business

*asked on September 30, 2010* -
## Algebra II

In a right triangle, the length of the longer leg is 7 more inches than the shorter leg. The length of the hypotenuse is 8 more inches than the length of the shorter leg. A). If the shorter leg is representd by x, write expressions for the longer leg and

*asked on October 28, 2018* -
## Chemistry

Given the standard heats of reaction Reaction ∆H0 M(s) + 2 X2(g) → MX4(g) −123.7 kJ/mol X2(g) → 2 X(g) +297.3 kJ/mol M(g) → M(s) −25.1 kJ/mol calculate the average bond energy for a single M X bond. Answer in units of kJ/mol

*asked on October 7, 2012* -
## Income tax / Accounting

Computation of taxable income: The following information for 2009 relates to Tom, a single taxpayer, age 18. Salary $1,800 Intrest income $1,600 Itemized deductions $ 600 A. Compute Tom's taxable income assuming he is self-supporting B. Compute Toms's

*asked on October 1, 2010* -
## Algebra 1

Emily wants to buy turquoise stones on her trip to New MExico to give to at least 4 of her friends. The gift shop sells stones for either $4 or $6 per stone. Emily has no more than $30. I have no clue how to work this out!!!

*asked on September 20, 2011* -
## physics

A person jumps from the roof of a house 4.0- high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.74. 1)If the mass of his torso (excluding legs) is 40 , find his velocity just before

*asked on September 29, 2010* -
## Chemistry

A sample is taken that has 400,000,000 particles in it. If 20 of these particles are a dangerous chemical, what is the concentration of this chemical in parts-per-million (ppm)?

*asked on April 16, 2019* -
## Chemistry

Oxygen gas, from the decomposition of KClO3, was collected by water displacement. The pressure and temperature in the lab during the experiment were 451.0 torr and 20.0 C. What was the partial pressure of oxygen?

*asked on March 18, 2014* -
## Physical Science

If an unknown substance cannot be broken down into a simpler substances, it is 1. a compound 2. an element 3. made of one kind of atom 4. both 2 and 3

*asked on January 26, 2008* -
## Chemistry

A step-down transformer has 200 turns of wire in its primary coil. How many turns are in the secondary coil if the input voltage = 120V, and the output voltage = 6V

*asked on May 16, 2019* -
## Algebra II

Solve each logarithmic equation. Check for extraneous solutions log42 = log21 +log(x-1)

*asked on April 15, 2019* -
## Chemistry

Write so the charges are equal Li+ and OH1- Ca2+ and O2- Al3+ and PO43- Na1+ and S2- Zn2+ and Cl1- Al3+ and 02-

*asked on February 24, 2019* -
## math

suppose a single die is rolled find: a) P(6, given that an odd number is rolled) b) P(5, given that ann odd number is rolled) is a) 0 and b) 1/6

*asked on November 1, 2008* -
## Physics

An ideal gas was slowly compressed at constant temperature to one-half it’s original volume. In the process, 150 kcal of heat was given off. How much work was done by the gas (in joules)?

*asked on February 19, 2019* -
## math

a retailer planned to buy some computers from a total of sh 1,800,000. before the retailer could buy the computers the price per unit was reduced by sh 4000. this reduction in price enabled the retailer to buy 5 more computers using the same amount of

*asked on December 14, 2018* -
## chemistry

A scientist measures the standard enthalpy change for the following reaction to be -53.4 kJ : Ca(OH)2(aq) + 2 HCl(aq) CaCl2(s) + 2 H2O(l) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of

*asked on March 18, 2012* -
## Chemistry

Write down the electron configuration of the Cu(I) ion in the format 1s2_2s2_2p6_etc_etc.

*asked on February 8, 2018* -
## History

Ms. Sue please help! 1. Which factor contributed most to the beginning of the women's rights movement in the United States during the mid-1800s? (5 points) a dramatic increase in women's participation in the workforce a shift in social attitudes brought on

*asked on May 31, 2014* -
## English plural form

Is plural for Kelly....Kellys or Kelly's?

*asked on February 24, 2011* -
## Algebra II

Given polynomial function f and a zero of f, find the other zeroes. f(X)=4x^3-25x^2-154x+40;10

*asked on December 3, 2018* -
## math

when the price of an item was increased by sh.5, i bought 2 items fewer with sh 200. what is the current price of the item?

*asked on November 25, 2018* -
## Physics

How can I find the distance? Mountain pull. A large mountain can slightly affect the direction of “down” as determined by a plumb line. Assume that we can model a mountain as a sphere of radius R = 2.00 km and density (mass per unit volume) 2.6 × 10^3

*asked on November 2, 2017* -
## Physics

An object initially at rest experiences an acceleration of 1.4 m/s² for 5.6 s then travels at that constant velocity for another 9.3 s. What is the magnitude of the object’s average velocity over the 14.9 s interval?

*asked on September 9, 2015* -
## Algebra II

The profit P, in dollars, gained by selling X computers is modeled by the equation P+-5X^2+1000x+5000. How many computers must be sold to obtain a profit of 55,000

*asked on October 28, 2018* -
## Math

Neema did y tests and scored a total of 120 marks. she did two more tests which she scored 13 and 14 marks. The mean score of the first y tests was 3 marks more than the mean score for all the tests she did. Find the total number of tests that she did.

*asked on November 23, 2018* -
## Science

Why does seafloor spreading occur?

*asked on May 20, 2012* -
## Math

given a standard deck of 52 cards, 3 cards are dealt. If each card is replaced in the deck (and the deck is well shuffled) after being dealt answer the questions below. 1. If the first two cards are queens, what is the probability that you will be dealt

*asked on March 24, 2015* -
## Science

I'm doing a final lab for my Chemistry class, which entails the reaction of Aluminium and hydrochloric acid to produce gas that we are supposed to collect in mL. I have been assigned to collect exactly 215 mL = .215 L but I must have the correct amount of

*asked on May 28, 2019* -
## Physics

Suppose that a comet that was seen in 545 A.D. by Chinese astronomers was spotted again in year 1937. Assume the time between observations is the period of the comet and take its eccentricity as 0.11. What are (a) the semimajor axis of the comet's orbit

*asked on November 12, 2017* -
## math

A box contained some red, blue, and green markers. For every 5 red markers, there were 2 blue markers. For every 3 blue markers, there were 5 green markers. a. Find the ratio of red markers to blue markers to green markers. b. When 6 red markers were

*asked on March 26, 2015* -
## chemistry

A scientist measures the standard enthalpy change for the following reaction to be -53.4 kJ : Ca(OH)2(aq) + 2 HCl(aq) CaCl2(s) + 2 H2O(l) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of

*asked on March 18, 2012* -
## math

A Retailer planned to buy some computers from a total of sh 1800000. before the retailer could buy the computers the price per unit was reduced by sh 4000. this reduction in price enabled the retailer to buy 5 more computers using the same amount of money

*asked on December 15, 2018* -
## College Algebra

A cars value is declining exponentially. The car is currently 3 years old and has a value of 18,000. The car sold for 26,000 brand new. Find the rate at which the value of the car is decreasing. So far my equation is 18,000=26,000 (3-.04)^the But I'm not

*asked on April 21, 2016* -
## home inspection

11. Structural failure in a roof may be due to A. the presence of a vapor barrier between the attic floor and the ceiling below. B. too little span between supporting members. C. cuts made in rafters or trusses for addition of components such as stairways

*asked on February 24, 2013*