# Questions Asked onSeptember 6, 2011

1. ## physics

Hans stands at the rim of the Grand Canyon & yodels down to the the bottom. He hears his yodel echo back from the canyon floor 5.20 seconds later. Assume that the speed of sound in air is 340 m/s. How deep is the canyon?

2. ## math

How to write 3.100 in word form

3. ## geometry

the angle of elevation from l to k measure 24. if kl=19 find jl and round to the nearest tenth

4. ## physics

A toboggan is sliding down a snowy slope. The table shows the speed of the toboggan at various times during its trip. (a) Make a graph of the speed as a function of time. (b) Judging by the graph, is it plausible that the toboggan’s acceleration is

5. ## Cypress

Suggest any limitations to the use of recrystallization as a purification method for a solid.

6. ## trig

suppose theta is in the interval (90,180 degrees) find the sign of csc(-theta) is it positive or negative = positive???

7. ## physics

An open vertical tube is filled with water and a tuning fork vibrates over the top near the open end. As the water level is lowered in the tube, the first resonance is heard when the water level is at 31 cm from the top of the tube. What is the frequency

8. ## AP chem

A 1.25-g sample contains some of the very reactive compound Al(C6H5)3. On treating the compound with aqueous HCl, 0.951 g of C6H6 is obtained. Al(C6H5)3(s) + 3HCl(aq) --> AlCl3(aq) + 3C6H6(l) Assuming that Al(C6H5)3 was converted completely to products,

9. ## MATH HELP!

cAnything helps and if i could get an explanation cause im a bit lost! thank youuuu (: A hospital has an operating room used only for eye surgery. The annual cost of rent, heat, and electricity for the operating room and its equipment is \$200,000 and the

10. ## PHYSIC

A square wire loop 10.0 cm on each side carries a clockwise current of 15.0 A. Find the magnitude and direction of the magnetic field B at its center due to the four 1.20 mm wire segments at the midpoint of each side?

11. ## Chemistry

A 1-ounce serving of Cheetos has 2.90 ×102 mg of sodium. What is this mass equivalent to in units of grams?

12. ## math

Paul has grades of 73 and 86 on his first two tests. What must he score on his third test in order to have an average of at least 70?

13. ## algebra

solve the following equation by clearing fractions show all work want to know if this right -7/3-5/2x=8+2x 6(-2/3)-(5/2x)(6)=6(8)+2x(6) 14x-15=48+12x 14x-12x-15=48+14x-14x 2x-15=48 2x-15+15=48+14x-14x 2x-15=48 2x-15+15=48+15 2x=-33 2x/2x=-33/2 x=-33/2

14. ## PHYSICS

A wire carrying a 28.0 A current bends through a right angle. Consider 2.00 mm segments of wire, each 3.00 cm from the bend (see fig). Find magnitude and direction of the magnetic field these two segments produce at point P, which is midway between them.

15. ## Chemistry

How much heat is required to raise the temp of 854 g water from 23.5 to 85.0 celcius I got this, is this right X=854(61.5)(4.184)=219747.864

16. ## algebra

If 800 mL of a juice drink is 15% grape juice, how much grape juice should be added to make a drink that is 20% grape juice? Use the table below to help.

17. ## physics

A bungee jumper falls for 1.3 seconds before the bungee cord begins to stretch. Until the jumper has bounced back up to this level, the bungee causes the jumper to have an acceleration upward of 4 m/s2. a. How fast is the jumper going when the bungee cord

18. ## Physics

A drag racer crosses the finish line of a 400.0-m track with a final speed of 104 m/s. (a) Assuming constant acceleration during the race, find the racer’s time and the minimum co efficient of static friction between the tires and the road. (b) If,

19. ## statistics

in a certain survey 1,043 adults, 81% reported having more than one television at home. find the actual number of respondents corresponding to the given percentage?

Ashton broke apart a number into 30+7. What number did she start with?

21. ## geometry

Solve y= 5/8b+10 for b

22. ## trig

find all values of theta in the interval (0,360) that have the given value: sintheta= √2 ______ 2

23. ## Math

5 hockey pucks and three hockey sticks cost \$23 5 hockey pucks and I hockey stick cost \$20. How much does 1 hockey puck cost? I know that I cost \$3.50 but idk how to get that answer

24. ## Physics

A positive charge Q is on the y-axis at a distance a from the origin, and another positive charge q is on the x-axis at a distance b from the origin. A) For what values(s) of b is the x-component of the force on q a minimum? B) For what values(s) of b is

25. ## physics

An object moving with uniform acceleration has a velocity of 15.0 cm/s in the positive x direction when its x coordinate is 3.00 cm. If its x coordinate 1.60 s later is -5.00 cm, what is its acceleration?

26. ## Math

A landscaper is designing a garden with hedges through which a straight path will lead from the exterior of the garden to the interior. If the polar coordinates of the endpoints of the path are (20, 90°) and (10, 150°), where r is measured in feet, what

27. ## Statistics

A student wonders if tall women tend to date taller men than do short women. She measures herself, her dormitory roommate, and the women in the adjoining rooms; then she measures the next man each woman dates. Here are the data (heights in inches): Men (x)

28. ## science

the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in

29. ## science

the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in

30. ## algebra 1

How do I simplify and justify the steps to: (4+105x)+5

31. ## chemistry

In the explosion of a hydrogen-filled balloon, 0.30g of hydrogen reacted with 2.4g of oxygen to form how many grams of water vapor? (Water vapor is the only product.)

32. ## geometry

if x squared equals 47 then what is the aproximate value of x

33. ## Physics

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the

34. ## trig

find the exact values of the six trig functions of the angle. -750 sin(-750)= cos(-750)= tan(-750)= csc(-750)= sec(-750)= cot(-750)= I've tried this question over and over again and i cannot get it right. i believe -750 is in the fourth quadrant but I'm

35. ## physics

a horizontal force of 1.2kgf is applied to 1.5kgf of block which rest on surface such that it just begin to slide .if coefficient of friction is 0.3.find out acceleration

36. ## science

5.00 lb of mercury is spilled onto a counter and forms a circular puddle with a diameter of 67.2 cm. Assuming the puddle is cylindrical shape, what is the thickness of the puddle of mercury? Extra info: [1 lb = 435.6 g. Mercury is a liquid metal having a

37. ## physics

How much time would Simpson save by in- creasing his average velocity to 105 km/h to the east? Answer in units of min

38. ## Chemistry

Calcium carbonate is insoluble in water. Name two substances that when mixed in solution, will form a precipitate of calcium carbonate. Explain why is it the two substances that you have chosen. why does magnesium chloride cannot be prepared in the lab by

39. ## physics

A car is speeding up and has an instantaneous speed of 14.0 m/s when a stopwatch reads 9.0 s. It has a constant acceleration of 2.3 m/s2 (b) What is the speed when the stopwatch reads 12.2 s?

40. ## bio

TRUE OR FALSE 1. One of two identical"sister" parts of a copied chromosome is called a chromatid 2.The final phase of mitosis in which the nuclear envelope re-forms is called anaphase. 3.Divsion of the cytoplasm takes place during prophase.

41. ## physics

when the shuttle bus come to a sudden stop to avoid hitting a dog, it decelerates uniformly at 4.6 m/s^2 as is slows from 8.2 m/s to 0 m/s. How long does it take for the acceleration for the bus. Answer in units of s

42. ## science

during the experiment, the students were asked to prepare a 10% (mass/mass) solution of sugar in water . ramesh dissolved 10g of sugar in 100g of water while sarika prepared it by dissolved 10g of sugar in water 100g of the solution a) Are the two solution

43. ## substance

Has anyone read the book begging for change by Robert Eggert. I am having a hard time analyzing chapter two and three. Can you please help me.

44. ## physics

Gravity on the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 16 kg object on the moon and on the Earth?

45. ## chemistry

The vapor pressure of water at 25.0 C is 23.8 mm Hg. If 250. mL of water is placed in a chamber with a volume of 1.00 cubic meters, how many mL of water will evaporate

46. ## ipc

Suppose all of the apples have a mass of 0.10 kg. If apple (A) is sitting on the ground, what is its potential energy?

47. ## Chemistry

A reaction A+B---> C has a standard free energy change of -5.13 kj/mol at 25 degrees celcius, What are the concentrations of A, B, and C at equilibrium if at the beginning of the reaction there concentrations are .3M, .4M, and 0M respectively?

48. ## calculus

Let f(x) be the function 6x^2-2x+8. Then the quotient (f(10+h)-f(10))/h can be simplified to ah+b for a and b eaquals what?

49. ## Chemistry

if 8.7 g of butanoic acid is dissolved in enough water to make 1.0 L of solution, what is the resulting pH

50. ## Physics

The net external force on the propeller of a 3.6 kg model airplane is 8.4 N forward. What is the acceleration of the airplane? Answer in units of m/s 2

51. ## Chemistry

need to know how to solve the following.... a gas filled weather balloon floating in the atomsphere has an initial volume of 850 L. The balloon rises to a region where the pressure is 56 kPa and its volume expands to 1700 L. If the temperature remains the

52. ## university colloquium

Find, explain, and describe examples of human behavior negatively impacting biodiversity. Choose three examples from the following four categories: species introduction, species harvesting; habitat destruction, habitat degradation. For each example,

53. ## english

how would u make a sentence out of the following and using the word believable here's what it said and here's what i wrote List three things about cat that are believable 1)List three things about cats that are believable a)they have 4 legs b)they are

54. ## Chem

write the dissociation of acetic acid identifying the base,acid,H donor, and H receiver C2H4O2+H2O - H3O+C2H3O2 is hydronium the H donor and is C2H3O2 the base?

55. ## BUSN

Which of the following statements is not true regarding the goal of financial management? The goal of maximizing the value per share of existing stock is relevant to all organizations. A way of aligning management goals to shareholder’s interest is to

56. ## Math

The Transitive Property states that if a = b and b = c , then a = c. Explain how you can use the Transitive Property to show that the expressions 0+x+13 and 13+x are equivalent.

57. ## biology

many organelles and molecules needed for cell division are formed after DNA replication and before mitosis.In which phase are they formed??

58. ## physics

part 1 Simpson drives his car with an average veloc- ity of 47.5 km/h to the east. How long will it take him to drive 137 km on a straight highway? Answer in units of h part 2 How much time would Simpson save by in- creasing his average velocity to 105

59. ## University Physics

If vector B is added to vector C = 6.7 + 6.9, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of vector C. What is the magnitude of vector B?

60. ## poetry

rhyme scheme is Beowulf

61. ## algebra 2 review

Condense the expression: 1/5log3(32) - 2log3x + 1/2log3y I can't put the 3 as a small number on the bottom on all 3 parts of the trinomial.

62. ## science

calculate the mass of sodium sulphate required to prepare its 20%(mass percent) solution in 100 g of water

63. ## Physics

A positive charge Q is on the y-axis at a distance a from the origin, and another positive charge q is on the x-axis at a distance b from the origin. A) For what values(s) of b is the x-component of the force on q a minimum? B) For what values(s) of b is

64. ## MATH

I have 9 digits. My ten millions digit is 0 and is 8 less than my hundred millions digit. My hundred millions digit is 1 less than my thousands digit, 8 more than my millions digit, twice my ten thousands digit, and 4 times my hundred thousands digit. My

65. ## College Statistics

The brightness of sunlight at the earth's surface changes over time depending on whether the earth's atmosphere is more or less clear. Sunlight dimmed between 1960 and 1990. After 1990, air pollution dropped in industrial countries. Did sunlight brighten?

66. ## Physics

At the heighest point on earth, the distance to the center of the earth is approximately equal to 1.0014 times the radius of the earth. What would be in N/kg the magnitude of the gravitational field (g) due to the earth at that position? Assume 9.8 N/kg

67. ## math

Estimate the instantaneous rate of change at the point indicated. y(t) = sqrt(3t+1) t=1

68. ## History

Was there a single event that caused the Revolutionary War and was that war avoidable?

69. ## math

a rectangular prism has a volume of 108 inchescubed the length is 9 inches the width is 3 inches what is the height of the rectangular prism

70. ## math

you a framing a picture that is 5 in by 7in. with a 1 inch wide frame. find the perimeter of the outside edge of the frame. explain, pleaswe i know the anser is 32 but why?

71. ## physics

Gravity on the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 16 kg object on the moon and on the Earth?

72. ## algebra

solve the following equation by clearing fraction want to know if this right -7/3-5/2x=8+2x 6(-7/3)-(5/2)(6)=6(6)+2x(6) 14x-15=48+12x 14x-12x-15=48+14x-14x 2x-15=48 2x-15+15=48+15 2x=-33 2x/2x=-33/2 x=-33/2

73. ## algebra

is this right solve the following inequality and write solutin as a set builder notation -6/25x>=-5/3 25/-6*-6/25*x=>-5/3*25/-6 x=

74. ## Texas Government

Please tell me which one of these is Federal , Confederal or Unitary . I have already submitted my question but I just want to be sure. ____1..In this system, power is divided between a central government and sub-government. ____2. England ____3. The

75. ## Algebra

After three plays in which a football team lost 7 yd,gained 3 yd and lost 1 yd, respectively, the ball was placed on the teams own 30 yd line. Where was the ball before the three plays?

76. ## Physics

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the

77. ## Physics

One afternoon, a couple walks five-sixths of the way around a circular lake, the radius of which is 1.45 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What are the magnitude and

78. ## Geometry

Identify the hypothesis and conclusion All even numbers are divisible by 2.

79. ## physics

acceleration=-1/2x^2.at time t=0it is at x=1.0m and its velocity v=o.find the time when it reaches x=0.25 m

80. ## algebra

amy paid 78.42 for a pair of running shoes during a 25% off sale what was the regular price?

81. ## math

a farmer wishes to enclose a rectangular region with 210 meters of fencing in such a way that the length is twice the width and the region is divided into two equal parts. what length and width should be used?

82. ## res/342

To test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were handed in. The first 25 papers showed a mean score of 77.1 with a standard deviation of 19.6, while the last 24

83. ## Geometry

If point C has coordinated (4,2) and point D has coordinates (8,5) then what is the length of CD?

84. ## math

Using only the numbers 8, 1, 4, 7, & 3, the product of 2 two digit numbers plus a number is 3,355?

85. ## math

you download 12 new songs to your MP3 player. then you delete 5 old songs. write each amount as a integer.

86. ## physics

two objects a and b have the same size but a is heavier than b .they reach the ground at the same time but a has greater______

87. ## Math

About what percent of the total population believed saying 136,800,000 to be true? Total population: 250,000,000? Answer is 55% how did you get this percent?

88. ## trig

a tree casts a shadow 36 ft long. at the same timem the shadow cast by a vertical 7 ft pole is 4ft long. find the hight of the tree

89. ## algebra

solve the equation if it an identity (all real numbers) or a contradiction please state 5x+6+6x=10x+6+y

90. ## History

Is fish considered a livestock in Texas?

91. ## organic chem

in simple distillation or fractional distillation do the changes in temperature occur more gradually? and why?

92. ## english

what is a single word for that person who loves education ?

93. ## Physics

Ok when your plotting a graph of Sin angle i against Sin angle r , which of those goes on the y axix ??

94. ## Chemisty

Calculate the energy in radiation of wavelength 550 nm carried by 1) one photon 2) 1 mol of photons

95. ## physics

An object moving with uniform acceleration has a velocity of 15.0 cm/s in the positive x direction when its x coordinate is 3.00 cm. If its x coordinate 1.60 s later is -5.00 cm, what is its acceleration?

96. ## physics

a person throws a ball 10m away from a step,having im height and width,he throws it with a velocity of 20m/s wit an angle of 30 degrees,in which step it falls?

97. ## Math!!!

I have an MSA math question. What scale would you use for making a frequency table of the following data 21,79,11,9,55,38,111, and 92? Please answer it I need the question now.

98. ## Finite Math

Sizes of disjoint subsets of a universal set. Assume that A and B are disjoint subsets of U, and that n(U)=95, n(A)=30,and n(B')=61. Find n(A¿B').

99. ## psy/230

•Post your response to the following: Describe how a person’s cognitive style influences learning style. How is personality influenced by inherent learning styles and learning environments?

100. ## chem

When a bond forms between C(H3) and MgBr, why would MgBr have a partial positive charge?

101. ## medical codiing

in an acute care hospital,when is it appropriate to assign a code such as 794.31

102. ## busn

Which one of the following activities best exemplify working capital management. For this exercise you will be choosing more than one option for your answer. 1. Identify three good investment opportunities for the firm. 2. Obtain a short-term loan to

103. ## Physics

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the

104. ## Trig

Using tables or a calculator, find tan 16 degrees 15 + cot 32.7 degrees to the nearest hundreths

WHAT ARE THE BUSINESS RELATED TERMS?

106. ## geometry

If the length of a rectangle is twice its width, w, write an expression to represent the perimeter of the rectangle. If the perimeter of the rectangle is 72 inches, what is the length and width of the rectangle?

107. ## early childhood language arts

1. Early childhood program transitions: A. Are all basically the same B. Are private family issues C. Require team collaboration D. Are most important in kindergarten........... I choose A........... Can someone please check my answer

108. ## buss/stats

Sorry the full question is A loaf of bread is normally distributed with a mean of22 oz. and a standard deviation of 0.5 oz. a, what is the probability that a loaf is btwn 22.75and 23.00? B, 5% of the loafs will weigh less than_____ ounces? C, assuming 200

109. ## Mystery number

The mystery number is a two didget even number. It is a multiple of2,4,5,and 10 but not a multiple of3 or 7 . Help please.

110. ## trig

use a calculator to find the decimal approx. (roud 8decimal places) : sec28°6' does it equal 1.13362379 or 87.99624264 ???

111. ## history

Around the time of the roman empire the tirms inch,foot,length foot based on

112. ## algebra 2

How do you find the points of intersection, if any, of the equations: x^2 + y^2 = 5 x - y = 1

113. ## Math

The measure of the supplement of an angle is 3 less than four times the measure ofthe comloment of the same angle

114. ## Algebra

Questions on piecewise function graphing Obviously I can't get help with the actual graphing here but I am hoping someone can push me in the right direction Problem: f(x) {4, if 0

115. ## physics

A helicopter is ascending (moving upwards) at a constant velocity of 8 m/s. At a height of 90m, a passenger opens a window and drops a package to the ground below. How long does it take the package to hit the ground and how fast is it moving just before

117. ## math

give an example of two fractions whose sum can be simplified to 1/2.

118. ## math

angle R & angle S are complementary angles..and angle U & and angle V are also complementary angles. if angle R = y-2, angle S = 2x + 3, angle U = 2x-y, and angle V = x-1, find the values of x, y, angle R, S, U, & V

119. ## MATH

Ok when your plotting a graph of Sin angle i against Sin angle r , which of those goes on the y axix and which goes on x axis??

120. ## environmental biology

Why would be important to study extreme habitat and extremophiles?

121. ## mATH

Using order of operations, create a formula that = 8 using four 6's 6 ___ 6 ____ 6 ______6 =8 fill in the blanks. It's the only one we can't figure out without using five 6's (6/6) +(6/6) +6 = 8

122. ## government

During the middle 1930s the WPA (Works Progress Administration) put unemployed people to work building bridges, roads and school paid for by posting US Bonds. Why could that not work to solve economic and similar problems today?

123. ## math

Max has 12 pairs of socks. Of them, 6 pairs are blue, 3 pairs are brown, and 2 pairs are white. Max wants to know what fraction of the socks are blue or brown. How can he find the numerator? a) Add 6+3+2 b) Add 6+3 c) Subtract 11 from 12 d) Subtract 9 from

124. ## square roots

i know this problem is really easy but i am having a brain freeze day will someone please help me figure out what the square root of 32 is? Please & thank you!

125. ## Physics

How to find refracticive index ?

126. ## history

What effect did the trading civilization of phoenicia have on the ancient world?

127. ## physics

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted

128. ## Calculus

The graph A(x) has points (-3,0), (0,-2), (1,0) and (2,3). If C(x) is defined by C(x)=A(2x+3), then what is the domain and range of C and how would the graph of C(x) look like? Also, is there any way to find what the actual equation of A(x) is with the

129. ## biology

why can't inflammation occur in an amoeba?

130. ## Calculus

The graph A(x) has points (-3,0), (0,-2), (1,0) and (2,3). If C(x) is defined by C(x)=A(2x+3), then what is the domain and range of C and how would the graph of C(x) look like? Also, is there any way to find what the actual equation of A(x) is with the

131. ## math

Using only the numbers 8,1,4,7, and 3, if the product of two 2-digit numbers, plus a number, is 3,355, what are the numbers??????

132. ## early childhood language arts

1. A naturalist language-learning environment A. Occurs mostly in the home B. Is created whenever a child is communicating with others C. Occurs mostly in speech therapy D. Excludes speech therapy ........... I choose B 2. Providing assistance to a child

133. ## math

you invest \$10,000 in a savings account that pays 6.6%, compounded quarterly for 15 years. How much money is in the account in 15 years?

134. ## social studies

who are the philosophers of social studies subject??

135. ## English

I just wanted to know if number 2 is completely wrong. 1.I havent' finished repairing the car enginge. 2.I haven't finished to repair the car engine. Thank you.

136. ## trig

a tree casts a shadow 36 ft long. at the same timem the shadow cast by a vertical 7 ft pole is 4ft long. find the hight of the tree

137. ## algebra 2 review

Condense the expression: 1/5log3(32) - 2log3x + 1/2log3y I can't put the 3 as a small number on the bottom on all 3 parts of the trinomial.

138. ## Chemistry

Give the physical state of CO2 under the following conditions: pressure = 4000 mmHg, temperature = 18 degrees F. show work!

139. ## Physics

Suppose a space capsule with an astronaut inside is launched from the top of a tower at some angle above the horizontal. a)While the capsule is in free fall, what are the acceleration of the astronaut and the capsule? b)If the astronaut measures his

140. ## University Physics

If is added to = 6.7 + 6.9, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of . What is the magnitude of ?

About 7/10 of the U.S population in 1991 believed saying look before you leap to be true (175,104,000). What was the total population?

142. ## calculus

Find the interest earned on \$15,000,invested for 6yrs at 4% interest compounded annually

144. ## Physics HELPP !!

The antireflecting coating works best if its refractive index is the square root of the refractive index of the lens inthe eye glasses. a) determine the refractive index of the lens that gives the best results

145. ## phsics

A student of weight 830 N was sent to another planet called Nerdland. If Nerdland has a mass that is three times the mass of the earth and a radius that is half the radius of the earth, what would be the mass in kg of the student when on Nerdland?

146. ## latin

i having trouble with placing latin numbers in their correct blanks, totally confused & need help.

147. ## math

you are desighning a poster that would be 3yd wide and 8 feet high. how much paper do you need in square feet. please explain

148. ## Martin Luther King

Hey guys could you help me with a better sentence than this. "In a competition the usual suspect of an offense towards the other player is the contender but Martin Luther King's death was not about the person who did it but the idea behind why he did it

149. ## statistics

A local manufacturer employs 750 people. The pie chart below gives the breakdown within the company. Of the employees, how many are management?

150. ## physics

A car is speeding up and has an instantaneous speed of 14.0 m/s when a stopwatch reads 9.0 s. It has a constant acceleration of 2.3 m/s2. (a) What change in speed occurs between t = 9.0 s and t = 12.2 s?

151. ## math

Explain how to factor the following trinomial forms: x² + bx + c and ax² + bx + c. Is there more than one way to factor these? Show your answer using both words and mathematical notation.

152. ## SCIENCE

How do you figure out the following ..?::::: Mass Number Number of Protons Number of Electrons (OF A ELEMENT) Number of Neutrons Thanks ~ Courtneeeey (:

153. ## BUSN

3. For this question, use the information for Sports Baseballs, Inc. Sports Baseballs, Inc. is a corporation that manufacturers and sells baseballs across several states in the Southeast. It had sales of \$2.7 million during the last year. Expenses were as

154. ## BUSN

4. For this question, use the information for Sports Baseballs, Inc. Sports Baseballs, Inc. is a corporation that manufacturers and sells baseballs across several states in the Southeast. It had sales of \$2.7 million during the last year. Expenses were as

155. ## math

what is a new ten in a addition problem

156. ## math

use parenttheses to make each number sentance true 124-6*0+15=34

157. ## algebra

want to know if this right solve the inequality and represent your answer in set buldier notation 30n+6

158. ## algebra

solve the following equation show all work -16+2x/3=-8

159. ## Chem

How many more [H+] are there in a sol’n of pH2 than pH6?

160. ## English

Can you please find appropriate synonyms because I can't think of any. Thanks lot. 1) Vivienne Westwood has been labeled as the designers’ designer. In the 1970s she opened a shop in London that became the focus of the punk movement. 2) The shop started

161. ## US history! (NEED IT TODAY)

on my US history worksheet it asked for hardships for when England came to the Americas, and i can't seem to find it!

162. ## Math

How to find the missing values 0.38=(3*0.1)+(_*_)

163. ## Math

I know this is simple arithmetic but i just cant seem to figure out the proccess in how to figure it out. X = 0.11X + 3.366 i know that X = 3.8 but i don't now how to get it

164. ## busn

Can anyone provide some examples of situations in which business ethics play a role in the financial management process?

165. ## physics

A driver of a car traveling at 16.7 m/s applies the brakes, causing a uniform deceleration of 2.5 m/s2. The first question is - How long does it take the car to accelerate to a final speed of 13.9 m/s? For this i got 1.12 and that's correct. The second

166. ## Intermediate Algebra

The area of a rectangular athletic field is represented by the expression 12y^3+48y^2+24y square meters. Write an algebraic expression to represent one possible set of dimensions (in the sense "length times width" ) of the athletic field. Include correct

167. ## engineer

If you possess a recognized diploma in marine engineering, will working onboard a ship as a marine engineer a better choice compared to working at shipyards or on land as a sales engineer in term of salary, freedom, risk, nature of job and area of job

169. ## English

If i am given three paragraphs how do i write a thesis not to wordy

170. ## physics

It takes you 9.7 min to walk with an average velocity of 2.2 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m

171. ## chemistry

how many calories are lost when 15.0 ethanol,cools from 58.5 to -42.0

172. ## chemistry

what mass of Ca is needed to completely react with 5.0M of .250ml Copper I Phosphate?

173. ## Calculus

find the limit of ((sqrt(x+4))-2)/x as x approaches 0.

174. ## math

angle R & angle S are complementary angles..and angle U & and angle V are also complementary angles. if angle R = y-2, angle S = 2x + 3, angle U = 2x-y, and angle V = x-1, find the values of x, y, angle R, S, U, & V

175. ## Math

How do we turn this into exponential form? cubert[125 q^9 s^15] Any tips on solving problems like these? Thank you so much for the help :)

176. ## biology

what is the death by loneliness

177. ## Chemisty

Calculate the energy in radiation of wavelength 550 nm carried by 1) one photon 2) 1 mol of photons

178. ## Math

About what percent of the total population (250,148,571.42) believed saying(136,800,00)early bird gets the worm?

179. ## Math

again, i am in desperate need for checked answers on my math questions

180. ## algebra

solve show all work 8(6-5x)=-24(x-2)

181. ## algebra

solve the elimination method 7r-3s=0 3r+7s=58 what is the solution of the system

182. ## pre calculus

Describes the features of the graph below f(x)=x3+3x2-5x-7

183. ## algebra 2 review

Condense the expression: 1/5log3(32) - 2log3x + 1/2log3y I can't put the 3 as a small number on the bottom on all 3 parts of the trinomial.

184. ## culturally diverse

An Asian parent may not emulate the early childhood teacher's practice of praising her son for his accomplishments because: A. Praising the child might bring him bad-luck B. The parent believes that absence of criticism is itself an appropriate form of

185. ## college math

given the bar graph below create a grouped frequency distribution. the graph is numbered up the side by twos to 22, along the bottom there are countries that go up to a number. united states up to 10 argentina up to 22 united kingdom up to just under the

186. ## math

A business woman gets in a lift at a bank on the 7th floor and travels down 10 floors. At which level does she finish?

187. ## BUSN

Assuming a tax rate of 30%, what is the EBIT and taxable income for the year? A) \$1,000,000 and \$800,000 respectively B) \$575,000 and \$375,000 respectively c) \$565,000 and \$365,000 respectively D) \$425,000 and \$225,000 respectively E) None of the above

188. ## Bio

How much NaC3H5O3 (in grams) is needed to create a 1000 ml volume of Ringer’s lactate solution?

189. ## Jiskha

Would it be alright if i take a poster for jiskha and put them around my school, gain you guys some attention? I really love your alls help.

190. ## Pre-Calc/Trig

Please help-I'm stuck really bad What are the roots of the equation x^2 - 4x + 3 = 0 I think I was suppose to use b^2 - 4ac so it would be -4 - (-4)*1*3 = 12 so the roots would be 12 and -12 Thank you for any help you can provide

191. ## math

how do you write 0.013 in expanded notation

192. ## Math

Write the equation 5x – 4y = –7 in polar form

193. ## Math

3 = r cos( + 240¡ã) x ¨C ¡Ì3 y + ? = 0

194. ## Physics

How to find refractive index ?

195. ## History

Are cattle raised in East Texas, West Texas, or both?

A 2.8-L engine in a vehicle with air-conditioning uses 26.5-L of coolant. If the coolant has a density of 1.11 g/ml, what mass does the coolant add to the vehicle?

197. ## social studies

what do i want to get out of social studies?????

198. ## Algebra

4+2z what is the value of the constants in this expression? Can anyone help

199. ## English

I left out the following sentences. I really need your help. Please! 1) Analysts divide the Chinese capitals’ invasion into three categories: A)government financial investments (CIC) B)investments by wealthy individuals and private equity C)corporate

200. ## English

Many,many thanks for helping me! Here is the last doubt about the summary. I left out a sentence which I partially quoted from the Economist as a conclusion.Do you think I shall include it? 1) In conclusion, the combination of smooth political succession

201. ## Math

Whenever you cross multiply, which side do you start with first? Do i start on the left or right?

evaluate expression for the value given 4.9 +a for a = 37.2

203. ## math

what is justify

204. ## trig

find a value of interval in degrees cotalpha=1.3692847 alpha=0.023903 is that correct?

205. ## Math

What is 5+7x+2x-3+6 simplified, x+y+4x-3x+2y+3y simplified

206. ## Math

1. When four fan coins are flipped what is the probability of getting either exactly two heads of exactly two tails? 2. Solve for x 3x-x√3=-6 3. In the figure below ABCD is a rectangle and DE=DC. Given Ad= 5 and BE=3 find DE Thanks!

207. ## math

of a psychology class of 45 students 4/9 are female. how many students are male?

208. ## trig

the length of the base of an isosceles triangle is 30.42 inches. each base is 26.54 degrees. find the length of the two equal sides of the triangle to the nearest hundredths. i get 15.19. is that right?

209. ## stats

The college student's average age is 33 and 42% are minority. How do I verify these claims without using a college website.

210. ## math

rational expressions m3 -7/m2 -4

211. ## math

rational expressions q3 -3q/q2 -81

212. ## English

What is a creative synthesis?

213. ## math

you are printing the programs for a school concert and have to decide how many programs to print. do you have to know how many or approximately how many to print? explain answer

214. ## Math

Can you help me find the next 2 terms in the sequences? 1, .025, .1 repeating, .0625,.04 2root2, 4, 4root3, 8root3, 8root15, 24root10

Please help-I'm stuck really bad Thank you for any help you can provide What are the roots of the equation x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore

216. ## English

I urgently need to check this summary of a newspaper article. As I don’t know much of economy, I’d like you to check the use of words. Thank you very much. 1) Chinese economical and political influence is rising in Europe. Examples of its growth are

218. ## math

how do you find the square of a number that doesn't really have a square number and u have 2 show ur work without using ur calculator? for ex: what is the square of 5?

219. ## Math

is this the correct answer? I might post more on this exact post, so please bare with me? These are proportions 1.) 2:5 = 4:y Answer: y=2

220. ## chemestry

if my mass of my aluminum cube is 5.45 and volume is 2 ml, what i my density?

221. ## algebra

What is 2x+7+5x-x

222. ## math

use each of the digits 3,7,1,5,once to write a number that rounds to the number given 2000

223. ## Math

Added 5 gallons of gas tank went from 3/8 full to 7/8 how big is tank

224. ## Calculus

How would you factor this? f(x)=x^3-2x^2-4x-4

225. ## math

Longest multiplication combination for 120?

226. ## Math

C=-3 and d=-6 Evaluate the expression -c - (-d)

227. ## math

A student read about Volkswagen-packing in the 1960s. She was interested in knowing the maximum number of students that fit into a Volkswagen. How might you help her estimate an answer in a reasonable way?

228. ## algebra

solve using multiplication principle 2*5x=-7

229. ## college algerbra

2bx3 + 3bx2 − 18bx −27b

230. ## Math

About what percent of the total population believed saying 136,800,000 to be true? Total Populaton:250,000,000

231. ## trig

log4+log(x-7)=2

232. ## bussi./stats

what is the probability that a loaf of bread is between 22.75 and 23.00?

233. ## trig

log(x-15)-2=-logx

234. ## English

Thank you very much for your corrections! I tried to made the changes you suggested to me. 1) Analysts divide the Chinese capital invasion into three categories: government financial investments, investments by wealthy individuals and private equity, and

235. ## trig

find reference angle 111degrees and -105 does it equal =75? i don't know the first one

236. ## Human service

I need to find where I can find information that will support my answer to the challenges that a mediator may face. The answer that I gave is with legal, ethics, and morals.

237. ## trig

find the value of alpha cotalpha=1.3692847 is 0.023903 correct?

238. ## french

what is the french of I love you?

239. ## Math

What is 2x+7+5x-4-x simplified

240. ## algebra

solve using multiplication principle 2*5x=-7

241. ## social studies

what do i want out of social studies i need help

242. ## Math

2 = r cos( – 90°) y ?