1. Physical Science

1. A wave has a wavelength of 10 mm and a frequency of 5.0 hertz. What is its speed? A. 50 mm/s B. 50 hertz/s C. 2.0 mm/s D. 0.50 mm/s 2. Which type of mechanical wave needs a source of energy to produce it? A. a transverse wave B. a longitudinal wave C. a

2. PSYCHOLOGY IN SOCIAL LIFE

Which one of the following statements best describes group behavior? A. Group behavior depends solely on its most influential individual members. B. As a group behaves, so too will each individual in the group. C. Group behavior is a thing apart from the

3. Math question and answer check

Consider the probability function. (Give your answers exactly.) P(x) = 5 − x 10 , for x = 1, 2, 3, 4 (a) Find the mean. Incorrect: Your answer is incorrect. (my answer was 1). (b) Find the standard deviation. (my answer was 1 also on this one. Please

4. Algebra

A ball is thrown into the air. The height h, in feet, of the ball can be modeled by the equation h= -16t^2+20t+6, where t is the time, in seconds, the ball is in the air. When will the ball hit the ground? first should I use x= -b/2a?

5. Math

If boys and girls are equally likely to be born, what is the probability that in a randomly selected family of 8 children, there will be at least one boy? (Find the answer using a formula. Give your answer correct to three decimal places.)

6. Filipino

Ano ang indensyon?

7. algebra 1

Why Does A Poor Man Drink Coffee? use the and y-intercept to graph each equation below. The graph,if extended,will cross a latter. Print this in box that contains the number of that exercise. 1)-3x+2y=2 2)x-4y=8 3) 2x+y=-3 4)2x+3y=6 5)3x-y=1 6)-3x-5y=10

8. american history

which of the following statements is true of the Gulf of Tonkin affair? a. Johnson approved covert amphibious raid on the north Vietnam B. congress was divided and only reluctantly passed the gulf of Tonkin resolution c. the destroyer Maddox was sunk by

9. chemistry

calculate the osmotic pressure of a solution obtained by mixing 100ml of 0.25M solution of urea and 100ml of 0.1m solution of cane sugar at 293k

10. phys

Although most natural potassium nuclei are stable 39K (93.3%) or 41K (6.7%) nuclei, about 0.0117% are radioactive 40K nuclei, which have a half-life of 1.26 billion years. What fraction of all the potassium nuclei in your body will undergo radioactive

11. CHEMISTRY

1.A scuba diver's tank contains 0.29 kg of O2 compressed into a volume of 2.3 L. a)Calculate the gas pressure inside the tank when the temperature is 9oC. b)calculate the volume of oxygen if the temperature is 26oC and the pressure is 0.095 atm.

12. physics

Although most natural potassium nuclei are stable 39K (93.3%) or 41K (6.7%) nuclei, about 0.0117% are radioactive 40K nuclei, which have a half-life of 1.26 billion years. If you were worried about 40K radioactivity and wanted to wait for 97 % of the 40K

13. math

sam burned a CD with 6 songs how many ways can Sam arrange songs on a CD

14. stats 250

A z-score of z = +3.00 indicates a location that is the following

5P3/ 12P4

16. Geometry

Angle E and angle F are supplementary. The measure of angle E is 54 more than the measure of angle F. What is the measure of each angle?

Please edit my answers below the questions for correct sentencing In the following statement, a business owner attempts to explain and justify his slow growth in his business. I limit my growth pace and every effort to service my present customers in the

18. language arts

I HAVE TO EXPLAIN IN DETAIL 3 SIMILARITIES AND 3 DIFFERENCES FROM THE GIVER AND THE TRUMAN SHOW. I KNOW THEY BOTH HAD STRICT COMMUNITY RULES AND THEY LEFT THEIR COMMUNITIES FOR A BETTER PLACE. PLEASE HELP

19. Finite Mathematics

If a merchant deposits \$1,500 annually at the end of each tax year in an IRA account paying interest at the rate of 10%/year compounded annually, how much will she have in her account at the end of 25 years? Round your answer to two decimal places

20. math

Solve for x. 7x = 42

21. english

How does the word complicated function in the sentence?

22. math

Paul Warren is a self-employed mechanic. Last year he had total gross earnings of \$44,260. What are Paul’s quarterly social security payments due to the IRS

23. math

Universal Exporting has three warehouse employees: John Abner earns \$422 per week, Anne Clark earns \$510 per week, and Todd Corbin earns \$695 per week. The company’s SUTA tax rate is 5.4%, and the FUTA rate is 6.2% minus the SUTA. As usual, these taxes

24. CHEMISTRY

1. Consider the following reaction: Pb(NO3)2+KI--> Pbl2 +KNO3 in theis experiment, 12.0g of Kl is reacted with 20.5g of Pb(NO3)2. a) write a balanced equation for this reaction. b)identify the limiting reaction. c)calculate the mass of KNO3 produced from

25. Math check and question

x is a binomial random variable. (Give your answers correct to three decimal places.) (a) Calculate the probability of x for: n = 1, x = 0, p = 0.15 P(x) = Correct: Your answer is correct. . (0.85) (b) Calculate the probability of x for: n = 3, x = 3, p =

26. chemistry honors

A student is asked to make an acetic acid/ acetate buffer with a pH of 4.10. The only materials on hand are 300 mL of white vinegar (5.00% by mass acetic acid, density = 1.006g/mL) and potassium acetate. How should the student proceed?

27. math

An artifact was found and tested for its carbon-14 content. If 79% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)

28. Grammar

Circle the nouns that can be used with the verbs on the right . Engine-consumption-dependence (reduce) Answer : consumption and dependence Solution-dependence-alternative (find) Answer:solution and dependence Resources-technology-stocks(deplete)

29. physics

If you run away from a plane mirror at 2.35m/s , at what speed does your image move away from you?

30. math

Suppose that the elevator starts at street level (0), goes down 2 floors, then goes up 5 floors, and finally goes down 3 floors. On which floor would the elevator be?

31. Calculus

Use Green's theorem to evaluate the integral: y^(2)dx+xy dy where C is the boundary of the region lying between the graphs of y=0, y=sqrt(x), and x=9

32. physics

two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car

33. physics

two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car

34. Math

Kristy Dunaway has biweekly gross earnings of \$1,750. What are her total Medicare tax withholdings for a whole year? (

35. ratio

if a driver drives 40 miles in an hour, what is his ratio of miles to minutes, in lowest terms? Is the answer 40:60?

36. chemistry honors

A student is asked to make an acetic acid/ acetate buffer with a pH of 4.10. The only materials on hand are 300 mL of white vinegar (5.00% by mass acetic acid, density = 1.006g/mL) and potassium acetate. How should the student proceed?

37. children's literature

two types of biographies are:

38. Math

I need help with this question: 1. A hot air balloon is held at a constant altitude by 2 ropes that are anchored on the ground. One rope is 120 ft long and makes an angle of 65 with the ground. The other rope is 115 ft long. What is the distance between

39. math

Mary Jo Prenaris is an office manager with gross earnings of \$1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo’s new biweekly gross earnings?

40. engineering

Let’s suppose the message x(t) is an analog signal shown in the figure below. a) Draw the block diagrams of the system which converts the analog message signal x(t) to a pulse modulated signal. b) Draw the sampled signal with the sampling frequency

41. math

Mary Jo Prenaris is an office manager with gross earnings of \$1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo’s new biweekly gross earnings

42. maths

the area of a trapezoid is 360in^2.if the ratio of the height is 6:10:5, find the dimensions of the trapezoid.

43. Chemistry

I'm having a lot of trouble with Naming organic compounds when given things like HCOOCH2CH2CH3. Can you recommend some steps? How do you identify the branches?? And would the example I have above be a carboxylic acid? My teacher said that it might help to

44. math

Mitch Anderson is a security guard. He earns \$7.45 per hour for regular time up to 40 hours, time-and-a-half for overtime, and double time for the midnight shift. If Mitch worked 56 hours last week, including 4 hours on the midnight shift, how much were

45. Algebra

The four oldest people in Golden City have lived a total of 384 years put together. The difference in ages for the youngest and the second oldest is 14. The second youngest is 3 years older than the youngest. The oldest is 20 years older than the average

46. math

Universal Exporting has three warehouse employees: John Abner earns \$422 per week, Anne Clark earns \$510 per week, and Todd Corbin earns \$695 per week. The company’s SUTA tax rate is 5.4%, and the FUTA rate is 6.2% minus the SUTA. As usual, these taxes

47. geometry

A group of hikers are 675 ft from the base of Guadalupe Peak, which is 8,749 ft tall. What is the angle of elevation when they look at the top of the peak?

48. physics

Orange light with a wavelength of 6.00x102nm is directed at a metallic surface with a work function of 1.60eV. Calculate: a) The maximum kinetic energy of the emitted electrons b) Their maximum speed c) The cutoff potential necessary to stop these

49. american history

which of the following was the primary cause of the Balkan wars conducted during the Clinton administration a. the rise to power of Slobodan Milosevic in Serbia b. Muslim activism in Bosnia c. the un peacekeepers inability to stem ethnic cleansing d. the

50. Physics

Find the deBroglie wavelength of a 0.10kg ball moving at 19.0m/s? Why don’t we see this wave?

51. MIT LAB

tapered thin-wall circular shaft has constant wall thickness, t, length L, and diameters linearly varying between dA at the support A(x=0) and dB at its free end B(x=L). The shaft is homogeneous with shear modulus G HW6_1A : 20.0 POINTS Obtain a symbolic

52. heeeeeeeeeeelp math

Triangle ABC has an obtuse angle at B, base BC has length equal to 30 and height equal to 24. D is a point on the line segment BC and E is a point on AC such that DE∥AB. F is a point on AB such that FD∥AC. As D varies within line segment BC, what is

In the following statement, a business owner attempts to explain and justify his slow growth in his business. I limit my growth pace and every effort to service my present customers in the manner they deserve. I have some peer pressure to do otherwise by

54. math

a mountain is 17,064 feet above sea level, and a valley is 106 feet below sea level. what is the difference in elevation between the mountain and the valley?

55. math

Fran Mallory is married, claims five withholding allowances, and earns \$3,500 (gross) per month. In addition to Federal income tax (FIT), social security, and Medicare withholding, Fran pays 2.1% state income tax, and ½% for state disability insurance

56. maths

a spherical ballon is being inflated at the rate of 10 cu in/sec.find the rate of change of area when ballon has a radius of 6 inch. (a)3.33 in2/sec (b)3.67 in2/sec (c)3.11 in2/sec (d)none of these

57. Chemistry

A "neon" sign contains 2.4¡Ñ10^2 mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign? (a)6.5¡Ñ10^21 (b)2.8¡Ñ10^22 (c)3.2¡Ñ10^24

58. Algebra

The class average on a math test was 82 and there are 8 students in the class. If seven of the scores are 80, 90, 78, 100, 76, 74, and 82, what must the 8th score be to produce the average of 82?

59. Grammar (Ms. Sue) or (Writeacher)

Complete each of the following sentences with a word from the Word Bank. Word Bank: benediction; riveted; compounded; resolute. 1. The very youth of the soldiers was like a ___ because they seemed to be blessed with it. 2. It was obvious that Joby's

60. PHYSICS

Two cars lost in a blinding snowstorm are traveling across a large field, each thinking they are on the road, as shown in the figure on the left. They collide. If the distance x is 150 meters and the red car is travelling at 19.1 mph, how fast to the

61. chemistry

The H3o+ concentration of a solution is found to e 3.40*10^-6. What is the pH of the solution? what is the H3O+ concentration? what is the OH- concentration? is this and acidor a base?

62. math

Universal Exporting has three warehouse employees: John Abner earns \$422 per week, Anne Clark earns \$510 per week, and Todd Corbin earns \$695 per week. The company’s SUTA tax rate is 5.4%, and the FUTA rate is 6.2% minus the SUTA. As usual, these taxes

63. math

Paul Warren is a self-employed mechanic. Last year he had total gross earnings of \$44,260. What are Paul’s quarterly social security payments due to the IRS?

64. math

Fran Mallory is married, claims five withholding allowances, and earns \$3,500 (gross) per month. In addition to Federal income tax (FIT), social security, and Medicare withholding, Fran pays 2.1% state income tax, and ½% for state disability insurance

65. math

I am having a hard time on the ACT with the math have bought several books trying to learn the math and need some help please take the ACT sat. and again on the 23rd have to get good score to start classes in august

66. English

1. Tom seems to like playing basketball. We can see a basketball and his uniform in the room. Look at the top and the bottom of the uniform. The basketball is on the uniform shorts. (is this passage grammatical? Would you correct any errors?) 2. My

67. Calculus

y = f(x) = x^2 - 6 x (a) Find the average rate of change of y with respect to x in the following intervals. from x = 2 to x = 3 from x = 2 to x = 2.5 from x = 2 to x = 2.1 (b) Find the (instantaneous) rate of change of y at x = 2.

68. geometry

The figures are similar. The ratio of the lengths of their corresponding sides is 45:25, or 9:5. Find the ratio of their perimeters and the ratio of their areas. The figures are not drawn to scale.

69. chemistry

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

70. math

Paul Warren is a self-employed mechanic. Last year he had total gross earnings of \$44,260. What are Paul’s quarterly social security payments due to the IRS?

71. statistics

Given a population of scores is normally distributed with mu of 110 and a standard deviation of 8 the percentage of scores that are below a score of 99?

72. AP American Literature

My school requires all students wanting to be in AP Literature to complete a packet with assignments for different novels. The last page of my packet is for A Raisin in the Sun and I have to create a mosaic project for the book. It listed all the

73. math

Ransford Alda is a self-employed security consultant with estimated annual earnings of \$90,000. His social security tax rate is 12.4%, Medicare is 2.9%, and his federal income tax rate 14%. How much estimated tax must Ransford send to the IRS each quarter?

74. math

Fandango Furniture Manufacturing, Inc. has 40 employees on the assembly line, each with gross earnings of \$325 per week. What are the total combined social security and Medicare taxes that should be withheld from the employees’ paychecks each week?

75. Writing help!

1.In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer:he 2. (Her and me, She and I) have joined the Shutter and Lens. My answer:she and I 3. Phil showed Danny and (I, me) his butterfly collection. My answer:me 4. Bert warned

76. math

Ransford Alda is a self-employed security consultant with estimated annual earnings of \$90,000. His social security tax rate is 12.4%, Medicare is 2.9%, and his federal income tax rate 14%. How much estimated tax must Ransford send to the IRS each quarter?

77. math

Mary Jo Prenaris is an office manager with gross earnings of \$1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo’s new biweekly gross earnings?

78. math

Ransford Alda is a self-employed security consultant with estimated annual earnings of \$90,000. His social security tax rate is 12.4%, Medicare is 2.9%, and his federal income tax rate 14%. How much estimated tax must Ransford send to the IRS each quarter?

Factorise (x - 1)^2 - 4y^2

80. Grammar

Circle the nouns that can be used with the adjectives on the right , Development-environment-figures. (Recent) Answer:development and environment Crisis-supply-estimates. (Reliable) Answer:supply and estimates Awareness-theory-concern. (Public)

81. Calculus

Use Green's theorem to evaluate the integral: y^(2)dx+xy dy where C is the boundary of the region lying between the graphs of y=0, y=sqrt(x), and x=9

82. math

What does congruent mean?

83. Physics

Can someone explain why electrons cannot exist in orbitals and why we need to describe their location in terms of probabilities.

84. Math

what does this equal 48X10

85. math

How many three digits numbers N=abc are there such that a≤b and c≤b?

86. physic

There are 2 vehicles. Vehicle 1 a ford taurus at 3400 pounds is traveling 50mph headed east. Vehicle 2 is a dodge ram truck at 6400. The truck hits the car head on and the car is pushed back 35 feet from point of impact. The truck is 90 feet from point of

87. Math check

Consider the binomial random variable x with n = 30 and p = 0.85. (a) Find the mean. (Give your answer correct to one decimal place.) 25.5 . (b) Find the standard deviation. (Give your answer correct to two decimal places.) 30.85

88. physics

An aircraft in straight and level flight is in a state of horizontal equilibrium. It is flying 120 km/hr in the direction 110* and not correcting for wind. The wind is blowing at 60 km/hr in the direction 340*. Determine the speed and direction the

89. English

1. They also sell big,soft pretzels. 2. They also sell big soft pretzels. 3. They also sell soft,big pretzels. 4. they also sell soft big pretzels. (Would you check the word order and commas? Which ones are grammatical?)

90. trigonometry

how do i determine the point of intersection of a circle with a radius of 14 and the line coming in at a 35 degree angle

91. C++

what are the simplest methods to understand C++ programming language?

92. heeeeeeeeeeelp math

Triangle ABC has an obtuse angle at B, base BC has length equal to 30 and height equal to 24. D is a point on the line segment BC and E is a point on AC such that DE∥AB. F is a point on AB such that FD∥AC. As D varies within line segment BC, what is

93. world history

Which river valley produced the earliest known code of laws? A. Mesopotamia B. Yellow River C. Indus Valley D. Egypt

94. maths

if tan theta= -13/12 where theta is in 2nd quadrant find remaing trigonometric ratios

95. algerbra

What is the median and the 1st or lower quartile of the following data: 4, 12, 15, 20, 24, 30, 32, 35

96. florida

On December 31, 2010, XYZ made the following cash payments: •\$100,000 for a two-year office lease beginning on February 1, 2011

97. Grammar (Ms. Sue) or (Writeacher)

Complete each sentence by adding -ed to one of the following words and writing the new word on the line. Word Bank: whisper; murmur. 1. It seemed that the army ____ to itself in the dark. 2. Some of the men ____ to themselves.

When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is

99. Psychology

If the prototype is block or ball, the concept is: A. construction. B. toy. C. child. D. play. I think it is Toy ( B)

100. chemistry

If 7.50 mL of 0.100M HCl is mixed with 12.5mL of NaOH. What is the concentration of the base

101. Psychology

The experimental rats were being raised in separate environments. One group lived in the traditional cage in a quiet, but well lighted room. They were supplied with plenty of food and water. The second group inhabited "Rat Disney Land." There were colorful

102. Psychology

Nisa has grown up in a small village in the foothills. There was no electricity and water had to be hand pumped. They seldom saw people from the "outside." When she entered school the bus had to pick her up at 6:30 am in order for her to arrive at school

103. Chemistry

A 3.000gram sample of a hydrate compound containing Co, C2O4, and H2O was combusted to give 1.316g of Co3O4. What is the percentage of Cobalt in the original sample?

105. Introduction to Algebra MAT 221

Factor each polynomial completely. Show all work. Show each step. x^4 - x^3.

106. math

Fran Mallory is married, claims five withholding allowances, and earns \$3,500 (gross) per month. In addition to Federal income tax (FIT), social security, and Medicare withholding, Fran pays 2.1% state income tax, and ½% for state disability insurance

109. SOC 322

Please Help! What is the role of social security in influencing such inequities, and reflect on the overall role of society in providing financial stability for this community? Thank You,

110. statistics

a study found 37% of a new technique resulted in pregnancy and in that technique 25% resulted in multiple births what is the probabilty that the new technique produced a pregnacy and multiple births what is probability that a random selected pregnancy did

111. math

Can someone please check my answers and help me with the last question! 1. Solve sin2xcos2x = 4sin2x on the interval [0, 2pi] 0, pi, 2pi? 2. Exact value of sin(pi/12) - sin(5pi/12) root3/4? 3. Using factorial notation, 0! = 1 False? 4. Find the area of the

112. Math

1200=500/x + 500/x^2 + 500/x^3 + 500/x^4

113. Grammar

Circle the adjectives that can be used with the nouns on the right . 1)upward 2)growing 3)recent (Problem) Upward and growing 1)steady 2)severe 3)reliable. (Supply) Sever and reliable 1)available 2)increasing 3)public. (Concern) Available and increasing

114. american history

when postwar expansion slowed in the 1950s an economic stimulus was provided by a. the construction of Levitt towns b. the baby boom c. cold war spending d. increased consumer goods manufacturing I think a but the book talks about a and b so im not to sure

115. heeeeeeeeeeeeelp math

The integers from 1 through 10 (inclusive) are divided into three groups, each containing at least one number. These groups satisfy the additional property that if x is in a group and 2x≤10, then 2x is in the same group. How many different ways are there

116. Psychology

The testing company has hired qualified people in the field to administer the new test bank to subjects of different ages and ethnic backgrounds. They need a sizable number of scores from inner city, urban, and country/small town subjects. Their goal is to

117. English

Can someone check these sentences I need to prepare on our local wines? Thank you very much in advance! 1) The are two schools of thought about barrel ageing which can be grouped in traditionalists and modernists. 2) Traditionalists support the idea that

118. math

thousands place is between 8 and 10, ones place is 7 less than 9, tens place is 2, hundreds place is 4 more than 5

119. maths

place the numbers 11,12,13,14 and 16 in the square boxes in such a way that in a line is always same

120. English

Posted by rfvv on Saturday, June 1, 2013 at 12:48am. 1. They also sell big, soft pretzels. 2. They also sell big and soft pretzels. (Which one is grammatical?) 3. Try a taste of New York! 4. Try on a taste of New York! (Are both grammatical?) 5. Q3: What

121. Chemistry

How do you draw N,N-dimethylheptanamine? The N,N part is confusing me most.

122. English

1. Baozi is a steamed bread stuffed with meat, vegetables and red beans. 2. Meat pie is a kind of bread baked with meat and vegetables. Meat pie started in the UK. Usually, people in Australia enjoy eating meat pie. 3. Otak-otak is fish cake made with

123. Physics

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to

124. Maths

We have 15 points {Ai} placed within the unit sphere. What is the maximum possible value of ∑1≤i

125. Math

Fandango Furniture Manufacturing, Inc. has 40 employees on the assembly line, each with gross earnings of \$325 per week. What are the total combined social security and Medicare taxes that should be withheld from the employees’ paychecks each week?

126. Calculus

Find the slope m of the tangent line to the graph of the function at the given point and determine an equation of the tangent line. f(x) = 15/4 x at (1,15/4)

127. heeeeeeeeeeeeelp math

P is a point outside of circle Γ. The tangent from P to Γ touches at A. A line from P intersects Γ at B and C such that ∠ACP=120∘. If AC=16 and AP=19, then the radius of Γ can be expressed as a√b/c where b is an integer not divisible by the

128. Stats

two tailed test for experiment with N= 24. Can't find table of t critical values, but tcv@ df=13. Compared tobt with tcv. Will this more likely create type I or type II error?

129. Physics

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to

130. health

what causes depression

131. math

i am five digit number less than 25000 each digits value is one less than the digit to its right i am divisible by 2 and 4 what's my number

132. Psychology

In their book The Bell Curve, Murray and Herrnstein supported their claim of intelligence differences between races as attributable to: A. the effect of environment on the development of intelligence. B. the extent to which intelligence is inherited. C.

133. Psychology

One of the arguments against inherited racial differences in intelligence is based on data that shows: A. a college education reduces the gap between the IQ scores of white and black races. B. nutrition reduces the gap. C. scores for black test takers

134. Math

Solve the equation by completing the square. 2x^2 + 9x + 1 = 0

135. math

wha is the value of x if AB=56

136. Physics

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to

137. chemistry

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

138. Physics

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to

139. CHEMISTRY

1. The percent composition by mass for peroxyacylnitrate (PAN) is:19.8% C,2.5% N, and the rest is oxygen. Determine the empirical formula of this compound. ...plz i really need your help!!!

140. math

15+1/2=0.60(20+x)

141. Earth science

In what ways do earths system interact with each other

142. math

15 tv were shipped 4 were defective if 2 tv's were random selected compute the possibility of both tv's working and the probability that at least one of the 2 tv does not work

(3b+1)^2=16

144. SOC - 322

What are the financial equities that exist in the older adult population?

145. SOC - 322

Some individuals in this community are economically vulnerable, while others are financially stable. Can you please discuss the financial equities that exist in the older adult population. Thank You,

146. Earth science

Why are so few alternative sources of energy in use in the united states today??

147. math

give x has a poisson distribution with mean=1.6 what is the probability that x=9

148. math

determine the number of outcomes in a event decide wether it is simple or not you random select 1 card from stanard deck event c is selecting a 5 event C has how many outcomes and this event simple

149. Grammar (Ms. Sue) or (Writeacher)

Which sentence is correct? 1. There is certainly even more things we can do to help. (or) 2. There are certainly even more things we can do to help.

150. Algebra

Identify the solution of the system of equations 3x-2y=6 5x=5-25y