# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

92,096 questions, page 626
1. ## physics

When a 4.48 kg mass is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.68 cm. How much work must an external agent do to stretch the spring 3.96 cm from its unstretched position?

asked by Anonymous on October 31, 2009
2. ## Using the factor Theorem

use the factor theorem to determine whether x-c is a factor of f(x) f(x)=x^3+8x^2-18x+20; x-10 I have a doubt in my answer, i determined that x-10 is not a factor... am i right? please verify as my exam is tomorrow night at college. thank you for your time

asked by Rose on March 13, 2010
3. ## Health

You can find ways to manage stress by ________. A. Keeping what’s causing your stress to yourself B. Dismissing any signs of stress C. Getting active and eating healthy D. Pushing yourself to work harder C

asked by Night on October 30, 2014

Why do scientist use standered units of measurements? A.) Because their tools only measure in units B.) Because their units are either too small or too large to work with C.) So they can communicate findings without confusion D.) So that people who are not

asked by ItsMe! on September 1, 2016
5. ## Dressmaking

A suit with rounded lapels and shawl collar would work best on a woman with which type of bodyline A)straight B)soft-straight C)curved D)sharp straight I think that the correct answer is B.Need help

asked by Ayesha on May 3, 2012
6. ## physics

An athlete is running at a constant velocity with a javelin held in his right hand. The force he is applying on the javelin as he carries it is 5.0 newtons. If he covers a distance of 10 meters, what work has he done on the javelin?

asked by Anonymous on May 20, 2013
7. ## Physics

The driver of a 1350 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 15.0 m. Find the net work done on the car. Not sure how to set this problem up.

asked by Help on October 5, 2011
8. ## Physics

A man cycles up a hill whose slope is 1in20. If themass of the man and the cycle is 150kg and the man covers a distance of 100m along the incline, calculate the work done by theman.

9. ## physics

With brakes fully applied, a 1660 kg car decelerates from a speed of 74.0 km/hr. What is the work done by the braking force in bringing the car to a stop? What is the change in the kinetic energy of the car?

asked by Katie on February 17, 2012
10. ## science

a) calculate the heat of reaction, in kilojoules, for the reaction: 2NO2(g) + 3H2(g)--->2NH3(g) + 2O2(g) b) is the reaction endothermic or exothermic? how can you tell? I will be happy to critique your work on this. You will have to look up the heats of

asked by michelle on January 18, 2007
11. ## health

You can find ways to manage stress by ________. A. Getting active and eating healthy B. Pushing yourself to work harder C. Dismissing any signs of stress D. Keeping what’s causing your stress to yourself is it A??????????

asked by vickie on September 6, 2013
12. ## health

You can find ways to manage stress by ________. A. Keeping what’s causing your stress to yourself B. Dismissing any signs of stress C. Pushing yourself to work harder D. Getting active and eating healthy i think its B

asked by noah on February 7, 2013
13. ## physics

A mechanic pushes a 2.60 103-kg car from rest to a speed of v, doing 4,600 J of work in the process. During this time, the car moves 24.0 m. Neglecting friction between car and road, find each of the following.

asked by mandy on October 26, 2012
14. ## health

You can find ways to manage stress by ________. A. Getting active and eating healthy B. Dismissing any signs of stress C. Pushing yourself to work harder D. Keeping what’s causing your stress to yourself

asked by Martin1162 on March 8, 2016
15. ## Science

A mechanic pushes a 2.20 103-kg car from rest to a speed of v, doing 4,550 J of work in the process. During this time, the car moves 24.0 m. Neglecting friction between car and road, find each of the following.

asked by Mags on October 25, 2012
16. ## Art

Which of the following best explains why a colorful tulip is not typically viewed as a work of art? Tulips cannot be displayed in a gallery. Tulips are not human made. (MY ANSWER) Tulips do not have artistic patterns.

asked by LOVE on May 1, 2016
17. ## Economics

2. Identify three decisions that you (micro) have made recently. 3. Identify three decisions that our government (macro) has made recently. Use the internet, the newspaper, or television news to research this information. 4. List three resources that you

asked by Anonymous on January 31, 2017
18. ## Math vectors

Verify using an example that a(b+c) is not equal to ab+ac. (This means that addition does not distribute over the dot product.) My solution: is this correct? a(b+c)= ab+ac is ALWAYS true for whatever numbers you substitute let a = 16 b = 3 and c = 5 so LHE

asked by Raymond on February 27, 2015
19. ## Chemistry

Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute. If the distribution coefficient for the solute between ether and water is 20, calculate the percent of the compound that can be recovered with a single extraction with 13.9 mL of

asked by Anonymous on November 22, 2011
20. ## chemistry

The new vapor pressure of a solution of 3.25g of an unknown compound in 22.35g of H2O is 114.9mmHg at 55 degrees Celcius. What is the molar mass of the unknown compound?

asked by regina on December 4, 2010
21. ## ap chemistry

the heat of neutralization for a strong acid in dilute water solution is about 60 kJ/mol of H+. What quantity of heat in kJ is produced when 100 mL of 3 M HCl is mixed with 100 mL of 1 M KOH?

asked by Sarah on September 24, 2010
22. ## chemistry

an aqueous solution containing 17.5g of an unknown molecular(nonelectrolyte) compound in 100.0g of water has a freezing point of 1.8 degress C. calculate the molar mass of the unknown compound

asked by Monique on November 5, 2011
23. ## chemistry

200. g of a nonelectrolyte is dissolved in 1.00 kg of water. the boiling point of the solution is then measured to be 101.5 degrees C. What is the molar mass of the compound? The Kb for water is 0.51 degrees Celsius/m

asked by Christina on June 7, 2010
24. ## Chemistry

A solution of the weak acid HA was titrated with 0.100 M NaOH. the pH measured when vb=ve was 4.62 mL was 4.62 mL. Calculate the Ka of weak acid. (vb= added base volume, ve= equivalence point reading)

asked by Chanu on August 1, 2018
25. ## chemistry

what volume of butyric acid would be needed to make 25.0mL of a 1.0M solution? oh i forgot to mention that butyric acid is a liquid with a density of 1.75gr/mL can you please explain the steps more? thanks

asked by anonymous on February 15, 2012
26. ## Chemistry

How many grams of water are needed to dissolve 27.8g of NH4NO3 (80.0 g/mol) in order to prepare a 0.452 m (molal) solution? 27.8g / 80g/mol X 0.452 = 0.157 Is this correct?

asked by Hannah on February 12, 2012
27. ## Biology

Explain what would happen to a red blood cell placed in a solution of 99.3 percent water and 0.7 percent salt. and how can a small particle or liquid droplet enter a cell?

asked by ineedsciencehelp on December 12, 2007
28. ## math

Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much were used for other expenses?please anyone one to help me with the solution

asked by kelvin on September 14, 2016
29. ## Chem

What is the molarity (M) of an HCl solution, 150 ml of which when treated with excess magnesium liberates 3.5 l of H2 gas measured at STP? I know molarity is Moles, volume, but how does magnesium come into play?

asked by Johnie HELPPPPP on April 17, 2013
30. ## chemistry

If 5.05mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of HCl was added to 1.00 g of an antacid, how many moles of acid can the antacid counteract per gram?

asked by Ellen on July 27, 2010
31. ## chemistry

Balancing Redox Reaction in Basic Solution CN- + MnO-4 --> CNO- + MnO2 H2O + CN- --> CNO- + 2H +2e 3e + 4H + MnO4- --> MnO2 + 2H2O My confusion is with adding the OH- please explain

asked by Monique on November 22, 2011
32. ## Chem

How many moles of NH3 must be added to 1.00 L of solution to dissolve 0.979 g of CuCO3? For CuCO3, Ksp = 2.3 × 10-10. Ignore hydrolysis of CO32-, but consider the formation of the complex ion Cu(NH3)42+.

asked by lin on March 9, 2015
33. ## Physiology

How many is moles are in 0.5L of a 3.0M solution of sodium chloride? Sodium chloride dissociates into 2 osmoles per mole. I'm having trouble setting this up. My teacher couldn't explain it clear enough and neither does the book.

asked by Karen on September 8, 2015
34. ## math

May takes 12 hours to type a report. Her friend helps her and together they finish the job in 4 hours. How long would it take her friend had she worked alone? Representation: Equation: Solution: Conclusion:

asked by Tiffany on January 12, 2015
35. ## Chemistry

1,15g of a non-volatile compound is dissolved in 75,0g of benzene. The boiling point of the solution 0,125ºC has a value greater than the corresponding pure benzene. Calculate the molecular weight of the compound.

asked by Anonymous on February 5, 2016
36. ## Chemistry

A solution is prepared by mixing 100 mL of 0.500 M NH3 and 100 mL of 0.500 M HCl. Assuming that the volumes are additive, what is the pH of the resulting mixture? kb for ammonia is 1.8x10-5

asked by Chris on May 2, 2013
37. ## chem

What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius?

38. ## chemistry

For the titration of 50.00 mL of 0.1000 M ammonia with 0.1000 M HCl, calculate the pH (a) before the addition of any HCl solution, (b) after 20.00 mL of the acid has been added, (c) after half of the NH3 has been neutralized, and (d) at the equivalence

asked by chamy on April 11, 2012
39. ## Chemistry

A solution is prepared by mixing 100 mL of 0.500 M NH3 and 100 mL of 0.500 M HCl. Assuming that the volumes are additive, what is the pH of the resulting mixture? kb for ammonia is 1.8x10-5

asked by Chris on May 2, 2013
40. ## chemistry

what volume of butyric acid would be needed to make 25.0mL of a 1.0M solution? oh i forgot to mention that butyric acid is a liquid with a density of 1.75gr/mL can you please explain the steps more? thanks

asked by anonymous on February 15, 2012
41. ## chemistry

Calculate the molar conc. Of ethanoate acid needed to prepare ethonoic buffer of ph 6.8 using 0.5 molar solution of sodium ethanoic.pka of acid 0..127

asked by Anonymous on March 22, 2014
42. ## CHEMISTRY!!!!

Write two reactions for NaHCO3, reacting with water in one NaHCO3 is acting as acid the other as a base. Is 0.10M solution going to be acidic or basic? Explain. I write the two rxns but what do I do with then...

asked by L.Bianchessi on March 5, 2012
43. ## Chemistry

Problem: In a first order decomposition reaction, 50% of a compound decomposes in 10.5 minutes. What is the rate constant of the reaction? The solution my professor gave says: k = .693 / 10.5min Where did the .693 come from? Thanks

asked by Help on March 15, 2010
44. ## chemistry

How many grams of phosphoric acid can be made from 200 g of dichromate and 150 grams of hypophosphorous acid? (Performed in an acidic solution, Chromium III is one of the products)

asked by Rae on October 10, 2012
45. ## CHEMISTRY

a) Write the formula for each component in a buffer solution of acetic acid and its’ salt. b) The Ka, for hypochlorous acid, HClO, is 7.2 x l0^–4 at 25°C. What is pKa? Write the equation for the reaction to which Ka applies.

asked by jess on October 26, 2015
46. ## Calculus

For Questions 1–3, use the differential equation given by dx equals xy/3, y > 0. Complete the table of values x −1 −1 −1 0 0 0 1 1 1 y 1 2 3 1 2 3 1 2 3 dy/dx ? ? ? ? ? ? ? ? ? Find the particular solution y = f(x) to the given differential

asked by Justin on July 30, 2019
47. ## Chemistry

You make a solution using a solute (5g) in water (total volume 100ml). The molar mass of the solute is 110 g/mol. What is the molarity? What is the concentration reported as % by mass?

asked by Judy on September 23, 2015
48. ## chemistry

9.0 g of KCl was dissolved in 300 mL of water in a calorimeter. Calculate the heat of solution in kJ/mol if the temperature dropped by 2.53 K on dissolution. The specific heat of water is 4.184 J/g K

asked by Aundrea on December 4, 2014
49. ## Chemistry

A strip of zinc medal weighing 2.00 grams is placed in an aqueous solution containing 150.ml of .750M Tin(II) nitrate. Determine the grams of tin metal that will be precipitated.

asked by Jefferson on January 13, 2015
50. ## chemistry

What is the pH of an aqueous solution of 0.10 M NaHC(3)H(2)O(4)? Answer: 10.9 What I did: NaHC(3)H(2)O(4) + H(2)O-->

asked by pH levels on July 30, 2011
51. ## Chemistry

When 24.0g og glucose(a nonelectrolyte) are dissolved in 500g of water, the solution has a freezing point of -0.47C. What is the molar mass of glucose according to yhe data?Kf of water is 1.86C/m.

asked by Jude on October 10, 2010
52. ## chemistry

which of the following was not one of the products when you titrated the vinegar solution with sodium hydroxide? HC2H3O2+NaOH===>NaC2H3O2+H2O a salt water sodium acetate acetic hydroxide

asked by Anonymous on July 13, 2010
53. ## chem

if the freezing point of the solution is recorded 0.2 degrees C lower than the actual freezing point, will the molar mass determination for the unknown solid be too high or too low?

asked by Brianna Swart on February 9, 2017
54. ## Chemistry

If the hydrogen volume reads 8.35 mL, what number of moles does the represent at STP (1 atm and 0oC)? How many moles of electrons were added to the solution to create 8.35 mL of hydrogen gas?

asked by Anonymous on April 22, 2013
55. ## Analytical Chemistry

why is it necessary to store AgNO3 solution in an amber bottle? Why must volhard titration be carried out in strongly acidic medium? Why is titration of AgNO3 with KSCN be done with vigorous swirling?

asked by anonymous on July 25, 2008
56. ## chemistry

can someone please explain to me how the solution to 240 000 would be written as 240 000 is expressed as 2.4* 105 in scientific notation? i get the decimal part but am lost after that. mary Hornbeck

57. ## linear algebra

It is not possible to meet exactly the recommendation by applying some combination of the three(3) brands of fertilizer because having put d question in a Matrix form. The determinant to know whether it is possible or not is equal to Zero(0) which is

asked by John E. Livinus on August 21, 2015
58. ## chemistry

200. g of a nonelectrolyte is dissolved in 1.00 kg of water. the boiling point of the solution is then measured to be 101.5 degrees C. What is the molar mass of the compound? The Kb for water is 0.51 degrees Celsius/m

asked by Christina on June 7, 2010
59. ## chemistry

6.0 g potassium chromate is dissolved in 20 g water at 80 degree celcius. The solution is then cooled to 0 degree celcius. What mass of solute crystallises, assuming a supersaturated is not formed?

asked by viola on May 19, 2016
60. ## AP Chemistry

An aqueous antifreeze is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol.

asked by Angel on November 28, 2009
61. ## chemistry

Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute. If the distribution coefficient for the solute between ether and water is 20, calculate the percent of the compound that can be recovered with a single extraction with 13.9 mL of

asked by samm on November 24, 2013
62. ## chemistry

Calculate the molarity (mol/L) of Ba2+ when BaCrO4 is placed in a 0.0457 M K2CrO4 solution. The equation represents the solubility process. K(sp)=1.2x10^-10 BaCrO4 (s) Ba2+ (aq) + CrO42- (aq)

asked by bme1 on April 14, 2010
63. ## chemistry

The solubility of NaCl at 17 celsisus degrees is 39 g per 100 ml water. If 83 g of NaCl is dissolved in 250ml of water at the same temperature, the resulting solution is: a)unsaturated; b)saturated; c)supersaturated

asked by Ngoc Nguyen on December 13, 2014
64. ## chemistry

Given a saturated solution of 25 drops of Ca(OH)2 in water that requires 34 drops of 0.0050 M HCl to titrate to the endpoint, calculate [OH-] and [Ca2+]. An ICE table will help you relate [OH-] to [Ca2+].

asked by Cassie on April 16, 2012
65. ## Chemistry

1. Calculate the concentration of H3O+, HC2O4-1, and oxalate ion (C2O42-) in a 0.175 M solution of oxalic acid (C2H2O4). [For oxalic acid, Ka1 = 6.5 ´ 10-2, Ka2 = 6.1 ´ 10-5.]

asked by Anonymous on December 11, 2014
66. ## chem urgent!!

What is the pH of the solution created by combining 12.00 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? i need to find the ph with HCL and then with hc2h3o2. i got 1.30 as my anser but this was wrong

asked by tom on August 20, 2008
67. ## Science

In 400min,2.4grams of copper is obtained by Cu2+ solution,find how many Amphere is required for this experiment. Using the same current and time what mass of Cu2+ will be obtained from a Cu(NO3)2.

asked by Manal on February 1, 2018
68. ## chemistry

REVISION TO PREVIOUS POST: What is the pH of the solution created by combining 1.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 ml of the 0.10 M HC2H3O2(aq)? I understood how to do the HC2H3O2, but I can't do the HCl. I am

asked by Sara on July 11, 2010
69. ## chem 15

A bottle of a certain ceramic tile cleanser, which is essentially a solution of hydrogen chloride, contains 130 g of HCl and 750 g of water. What is the percent by mass of HCl in this cleanser?

asked by jen on November 8, 2016
70. ## CHEMISTRY

Determine the molar solubility (S) of Ag2CO3 in a buffered solution with a pH of 3.378 using the systematic treatment of equilibrium. Ksp(Ag2CO3) = 8.46 × 10–12; Ka1(H2CO3) = 4.45 × 10–7; Ka2(H2CO3) = 4.69 × 10–11.

asked by Anonymous on June 3, 2015
71. ## Chemistry

4.00L of water was added to 0.400L of an aqueous ethanol solution, giving a final concentration of 0.0400 M. What is the initial concentration of ethanol? I just need help setting it up pls Thanks!

asked by Winston Churchill on May 13, 2012
72. ## Math

The two legs of a right triangle are in the ratio √3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle. Please provide COMPLETE solution and FINAL ANSWER.

asked by K on March 3, 2018
73. ## Chemistry

A compound is known to be a cesium halide, CsX. If 3.00 grams of the salt is dissolved in exactly 100.0 grams of water, the solution freezes at -0.735°C. What is the chemical formula for the salt?

74. ## Chemistry

If 30ml of the standard sodium edetate soln neutralized 25ml of solution containing 0.25g of dried magnesium sulphate. Calculate the %w/v of mgso4 in the dried mgso4

asked by Kingsley Ekpe on July 19, 2016
75. ## chemistry

What is the % transmittance for each of these errors Washing a cuvette with DI water, then failing to rinse it with the solution to be measured Failing to wipe off fingerprints from the cuvette. Changing the wavelength from maxtomax+10 nm.

asked by leah on January 26, 2009
76. ## chemistry

calculate the pH of the solution when 100mL of .05M KF is mixed with 200mL of .05M HF; Ka (HF) = 3.467x10^-4. I tried to use the Henderson Hasselbach equation to get the correct answer (pH=3.16) but can't seem to get it correct. Any help would be AMAZING!

asked by Jamie on April 3, 2014
77. ## physics

i need a proof/solution to this question. please help. if a ball is trown vertically upward at 80 ft/sec it will continue to rise for approximately how many seconds? how many seconds will the ball return to the ground? thanks!

asked by Anonymous on September 12, 2013
78. ## Chemistry

Which aqueous solution below is expected to have the lowest freezing point? Assume 100% dissociation for ionic species. 1)0.25m MgBr2 2)0.30m Na2SO4 3) 0.50m KCl 4) 1.0m sucrose 5) 0.40m Cr(NO3)3 I think that the answer is 0.30NaSO4 but I am not positive.

asked by Hannah on February 10, 2012
79. ## Math

Write a set of parametric equations in Quadrants I and IV for a semi-circle with a radius of 10. I'm kind of new at parametrics, so this is what was given to me: (x-h)^2 + (y-k)^2 = r^2 x^2 + y^2 = r^2 r = 10, y = rsint, x=rcost So, 10cost + 10sint = 100

asked by Momo on April 22, 2009
80. ## accounting info. systems

The last step in the revenue cycle is cash collections. The accounts receivable department must know when customers pay their invoices, yet segregation of duty controls dictate that the collection and recording functions be kept separate from each other.

asked by Joe on May 23, 2010

the enthalpy change when a strong acid is neutralized by base is -56.1 kJ/mol. If 135 ml of .450 M HI at 23.15 C is mixed with 145 of .500 M NaOH at 23.15 C What will the max temperature reached by the resulting solution? tamana: Assume the specific heat

asked by Jazmin on October 17, 2010
82. ## Microbes and Society

Which of the following is the correct sequence of steps in the scientific method? a. observation - prediction - hypothesis - observation - hypothesis b. hypothesis - observation - prediction - hypothesis - observation c. observation - hypothesis -

asked by Amber on January 31, 2017
83. ## algebra

f the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and

asked by alyssa on March 5, 2012
84. ## Adding and Subtracting Rational Expressions

Iwouldhighly appreciate it if someone could solve these forme.I think I typed themout correctly. What I'm looking at,for instance,the first one,is displayed 5n over 3 times 4n over 3 1.(5n/3)- (4n/3) 2.(3x/10)+(9x/10) 3.(n-2/n+4)+(8/[n+4]) 4.(5m+8/[m-1]) -

asked by mike on May 16, 2007
85. ## calculusI

If \$700 is borrowed at 8% interest, find the amounts due at the end of 2 years if the interest is compounded as follows. i know how to solve this problem but i don't know what to plug in for n in the formula for finding the amount quarterly and hourly. plz

asked by britteny on October 16, 2007
86. ## math

Can someone help me how to solve it. A new medically approved wheelchair was considered to be an improvement over a standard wheelchair by 325 out of 450 patients in a survery. 20) What is the margin of error for the survey? Round your ansewer to the

asked by Josh on August 21, 2012
87. ## algebra

Write and solve an inequality to find the approximate circumference of Earth using the following information - the 4 million miles of public roads in the U.S. would: Reach to the moon and back more than eight times, circle the globe more than 157 times

asked by Ashley on September 29, 2010
88. ## math

Frank calculated that he will lose 4.6 calories per minute walking at a rate of 3 miles per hour. How many minutes does he need to walk to burn at least 250 calories? Write and solve an inequality, rounding to the nearest tenth

asked by jermey on April 25, 2014
89. ## Science

Given the following equation: N2 + Cl2 > @ NCL3 H=+230 kJ a) What mass of N2 would absorb 96.5 kJ of heat as it reacts? b) What volume of Cl2 at STP would be required to react with the N2 in part (a)? I do not know how to solve this problem. My mindset is

asked by Anonymous on July 9, 2015
90. ## algebra

f the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and

asked by alyssa on March 5, 2012
91. ## physics

The distance between two consecutive nodes of a standing wave is 19.2 cm. The hand gen- eratingthe pulses movesupand downthrough a complete cycle 3.23 times every 5.9 s. Find the velocity of the wave. Answer in units of m/s how do I solve it? thanks!

asked by DEANA on October 19, 2014
92. ## Calculus

An explosion causes debris to rise vertically with an initial velocity of 160 feet per second. In how many seconds does it attain maximum height? i know i need to use the formula: y(t)=-16t^2+Vot + yo Have: vo=160 Yo= is what i am trying to find and i dont

asked by Roger on February 23, 2017
93. ## physics

A car is driven 215 km west and then 85 km southwest. What is the displacement of the car from the point of origin magnitude and direction draw a diagram.? I kinda understand how to do this but in order to solve this you need to get a 45 degree angle and i

asked by bubbles on October 7, 2012
94. ## Precalculus

I asked this yesterday but I was told my answer was incorrect by my professor. ln x^5 - ln x^2 = 3 solve for the unknown. I have reviewed my Log laws but yet I still cannot figure out what the answers are. The question asks for me to write all answers as a

asked by George on January 24, 2013
95. ## Trigonometry

Solve the trigonometric equations. 1.) SIN²x(CSC²x-1) 2.) COT x SEC X 3.) COS²[(π/2)-x]/COS X (Note: These mathematical problems are somewhat tricky, but useful for students as of learning how to their fundamental identities. Let's enjoy solving these

asked by AwesomeGuy on February 10, 2013
96. ## algebra

f the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and

asked by alyssa on March 5, 2012
97. ## Physics

During an episode of turbulence in an airplane you feel 190 N heavier than usual. If your mass is 78 kg, what are the magnitude and direction of the airplane's acceleration? For the F=ma, I manipulated the equation and have gotten, a=190N/78kg=2.4 is this

asked by Kristi on October 13, 2017
98. ## algebra

a rectangular pool has an area of 880ft. the lenght is 10 feet longer than thw width. find the dimensions of the pool. solve by completing the square. round answer to the nearest tenth of a foot.

asked by Anonymous on March 17, 2012
99. ## math

an investment of \$10,000.00 in the Emerging Country Debt fund in 2001 was worth 24,780 in 2006 money mag used the formual r=(s/p)^1/n -1 to find the 5 year average annual return. What is the return. How do I solve this

asked by Debbie on March 17, 2009
100. ## SCIENCE(PHYSICS)

A TRAIN IS MOVING ON A STRAIGHT TRCK AND TRAVELS AT A SPEED OF 72KM/HR AND PASSES A POLE IN 3 SECONDS. FIND THE TIME TAKEN TO PASS A BRIDGE OF LENGTH 540m. PLEASE SOLVE THE QUESTION AND ANSWER IT AS I WAS NOT ABLE TO ANSWER IT.

asked by YASH on May 23, 2011