# Questions Asked onMarch 23, 2013

1. ## Chemistry

3. Which oxidation-reduction reactions are best balanced by the half-reaction method? A.) covalent reactions *B.)acid-base reactions C.) ionic reactions D.) intermolecular reactions Thank you.

2. ## chemistry

Consider a solution made by mixing 500.0 mL of 0.04182 M Na2HAsO4 with 500.0 mL of 0.03645 M NaOH. Complete the mass balance expressions below for Na and arsenate species in the final solution. There are 4 arsenate species, but I only got three of them. I

3. ## Chemistry

Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the following volumes of HNO3 have been added. a)0.0 mL b)20.0 mL c)25.0 mL d)40.0 mL e)50.0 mL f)100.0 mL

4. ## Chemistry

A solution contains 25 mmol of H3PO4 and 10. mmol of NaH2PO4. What volume of 2.0 M NaOH must be added to reach the second equivalence point of the titration of the H3PO4 with NaOH?

5. ## physics

Two fixed charges 1.07mC and -3.28mC are 61.8 cm apart. Where the third charge may be placed so that no net force acts on it

6. ## chem

Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. chlorous acid (HClO2) benzoic acid (C6H5COOH)

7. ## physics

A rock, mass = 2.0 kg, is fired straight up at 60 m/s from a catapult. What will be its maximum height at the moment it stops going up and starts to come down? Use the magnitude of g to be -10m/s2.

The solubility of AgCl(s) in water at 25 C is 1.33x10^-5 M and its delta H of solution is 65.7 kJ/mol . What is its solubility at 60.1 C ?

9. ## Chemistry

Suppose that 2.3 L of gas at 35°C and 1.0 atm is expanded to 4.5 L at 42°C. What will the final pressure of the gas be? (Ti in Kelvins=308.15; Tf(K)=315.15) Can someone please show me how to plug the values into the Combined Gas Law formula to calculate

11. ## Chemistry

Calculate amount (in grams) of unknown acid used for titration. You want 30 mL of titrant to get the equivalence point. Assume that the base is 0.05 M and the unknown acid molar mass is around 400 g/mol.

12. ## physics

a positive test charge of 3.0uC experiences a force of 0.75 N in an electric field. What is the magnitude of the electric field at the location of the test charge?

13. ## Math(arithmetic & Geometric Series)

1)The sum of 6 terms of an arithmetic series is 45, the sum of 12 terms is -8. Find the first term and the common difference? 2)If in a geometric sequence the sum of the second and the third is 20 and the sum of the fourth and fifth is 320, find the common

A cart of mass M1 = 5.00 kg and initial speed = 3.00 m/s collides head on with a second cart of mass M2 = 3.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision. I have tried the answer 5.0 m/s however it says it

15. ## Chemistry

What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a pH of 4.83 at 25 Celsius? Ka for HC2H3O2 is 1.8 x10^-5 a)0.82 b)0.55 c)3.5 d)1.2 e)2.0 The answer I got was 8.2 ..(help!)

16. ## Calculus

an open topped cylinder has a volume of 125 cubic inches. determine the radius of the pot that will minimize it's surface area. What I have so far... radius =r keight =h V=πr²h 125/πr²=h SA = πr² + 2πr(h) = πr² + 2πr(125/πr²) SA =πr² +250/r

17. ## Trigonometry

If sin A = 3/5 and cos B = 24/25 and

18. ## chemistry

how many grams of Ag2CO3 will precipitate when excess Na2CO3 solution is added to 64.0 mL of 0.554 M AgNO3 solution?

19. ## geometry

The measures of two consecutive angles of a parallelogram are in the Ratio 3:7. Find the measure of an acute angle of the parallelogram

20. ## Physics- so confused!!

A bullet with a mass of 5.40 g is fired horizontally at two blocks resting on a smooth and frictionless table top as shown in the Figure. The bullet passes through the first 1.20 kg block, and embeds itself in a second 1.20 kg block. Speeds v1 = 3.90 m/s

21. ## chemistry

Determine [Zn2 ], [CN–], and [HCN] in a saturated solution of Zn(CN)2 with a fixed pH of 1.78. The Ksp for Zn(CN)2 is 3.0 × 10–16. The Ka for HCN is 6.2 × 10–10.

22. ## chem

(b) (4 pts.) Suppose it is a hot summer day (40.0 degrees C = 104.0 degrees F), and you have left a can of hairspray outside so the gas within it is now at the same temperature of its surroundings. As part of your chemistry lab class, you have to build a

23. ## maths

if the LCM of first 20 natural numbers is X, then what will be the LCM of first 25 natral numbers

24. ## Chemistry

A chemist dissolves 0.095 g of CuSO4 · 5H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 39.7-mL sample of this solution is then transferred to a second 500-mL volumetric flask and diluted. What is the molarity of CuSO4 in

25. ## math

The total weekly cost (in dollars) incurred by Lincoln Records in pressing x compact discs is given by the following function. C(x) = 2000 + 2x - 0.0001x2 (0 x 6000) (a) What is the actual cost incurred in producing the 1011st and the 1821st disc? (Round

26. ## chemistry

What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.98?

27. ## Finite Math

The reading list for a literature class has 6 fiction and 8 nonfiction books. A student is to write a report on 5 books from the list during the semester. The report must include at least 1 and at most 4 reports of fiction books. In how many ways can the

28. ## physics

a positive test charge of 3.0uC experiences a force of 0.75 N in an electric field. What is the magnitude of the electric field at the location of the test charge?

29. ## Chemistry

Please tell me which Gas Law equation to use to figure out this problem... A helium balloon at 25°C, 1 atm, has a volume of 2.88 L. Additional helium is pumped into the balloon. It now contains 1.20 g of He and its new volume is 7.20 L. How many moles of

30. ## Math

23.What is the approximate circumference of a circle with a radius of 6 centimeters? A.12 B.18 C.24 D.36 D 24.What is the length of the diameter if the radius is 15? A.5 B.15 C.30 D.45 C 27.What is the circumference of the circle velow if it has a radius

31. ## maths

from a rectangular piece of metal sheet of length and breadth 1.60 m and 80 cm respectively, 3 circular sheets of 20 cm radius are cut out. what area of metal is left?

32. ## calculus

A polynomial function p(x) has a relative maximum at (3, -4) a relative minimum at (-1, -6), a relative maximum at (-5, 2) and no other critical points. How many zeros does p(x) have?

33. ## Literature

If you consider The Call of the Wild to be an allegory, which one of the following statements would be true? A. The book is a story about the need for socialism. B. Judge Miller represents the primordial condition. C. John Thornton represents the civilized

34. ## physics

A group of swimmers is resting in the sun on an oﬀ-shore raft. They estimate that 2.85 m separate a trough and an adjacent crest of surface waves on the lake. They count 13 crests that pass by the raft in 20 s. How fast are the waves moving?

35. ## L.o

Name two community organization that are involved in supporting or giving redress to water pollution.and explain

36. ## physics

A ball of mass 0.750 kg is attached to the end of a 1.20m long cord that can withstand a maximum tension of 50.0 N. If swung in a vertical circle, what is the maximum velocity the ball can achieve before the string breaks?

Hafers, an electrical supply co., sold \$4200.00 of equipment to Coates Wiring Inc. Coates signed a promissory note 5-12th with 6.00% interest. The due date was Aug. 21st Short of funds Hafers contacted their bank on 7-6th;the bank agreed to take over the

38. ## physics

a machine weighing 1500N is supported bt two chains attached to some point on the machine.one of these ropes goes to the eye bolt in the well & is inclined 30 degrees to the horizontal & the other goes to the hook in ceiling & is inclined at 45 degrees to

39. ## WTI

1LB of ice at 20 deg f exerts its force downward. after the ice has absorbed 200 BTU's what direction will the force be exerted? After absorbing 2000 BTU's what direction will the force be exerted?

40. ## chemistry

A particle wavelength (λp) of a proton is 10-12m. What is the velocity of this proton [m/s]? To achieved the velocity that you just computed, what must have been the potential difference (V) through which the proton was accelerated? An electron of

41. ## math

the nile river is the worlds longest river .let n sttand for the length in miles of the nile. th parana river is 3,030 miles long. write an expression to show how much longer the nile is than the panama.

42. ## college algebra

A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.

43. ## Chemistry

Assuming complete dissociation, what is the pH of a 2.55 mg/L Ba(OH)2 solution?

44. ## physics

The red box has a mass of 25.2 kg and the blue box has a mass of 12.5 kg and the force is 211 N. To the nearest tenth of a m/s2 what is the acceleration of the combination?

45. ## Earth and Space Science

Put the following astronomical bodies in order from largest to smallest: a. Universe b. Galaxy c. Moon d. Planet e. Solar System f. Comet

46. ## physics

A car of mass m traveling at speed v on a horizontal road applies its brakes and comes to rest in time t while traveling a distance of d. The amount of internal energy created is?

47. ## Physics

Two people wearing skates facing each other. The 1st person is 75kg and pushes the second person 60 kg away at a speed of 2.0 m/s. What is the speed of the 1st person?

48. ## chemistry

(a) Consider the gaseous molecule BN-. At home, construct the molecular orbital diagram that is consistent with the known order of filling of molecular orbitals in the second period and with BN- being stable and paramagnetic. What is the bond order of BN-?

49. ## accounting

On dec. 31, 2010 a corporation issued 200,000 face value 12% bonds that mature 10 years from the date of issue. The issue price was 97. if the firm uses the straight line method of amortization interest expense for 2011 wll be reported at

50. ## Maths

The mean distance of the sun from the sun is 150 million kilometres.Express this in scientific notation.

51. ## mathematics

the theoretical probability of winning the lottery is 1/1,000,000,000.which of the ff is true if you purchase a lottery ticket?A.you will only win the lottery if you buy 1,000,000,000.B.you will never win the lottery.C.you will definitely win the

52. ## English 12

Read the poem “the kiss” below and write a detailed analysis of the poem’s meaning and language. Questions: 1.) What is the poem about? 2.) who is speaking in the poem? to whom? 3.) how does the poem convey its message? a. How does the poem look on

53. ## physics

two forces f1 and f2 are acting at a point such that the angles between them are (1) 30 degree (2) 60 degree and (3) 45 degree show that resultant forces will be

54. ## ENGLISH/MATH HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

NYS ELA 7 Score - Level 2 (high two so I was seven points away to a three) My Scale Scare - 658 Level Two: 642-664 (scale score) Level Three: 665-697 (scale score) NYS Math 7 Score - Level 3 My Scale Score - 678 Level Three - 670-693 (scale score) I really

55. ## Math

I'm having trouble on the 2nd part of the question below. The value of a 1962 Mickey Mantle baseball card went from \$900 to \$700. a. Write an integer to describe the change in value in the card. ( I know this would be -200) b. Use the abolute value of the

56. ## maths

Let the bottom edge of a rectangular mirror on a vertical wall be parallel to and h feet above the level floor. If a person with eyes t feet above the floor is standing direct at a distance d feet from the mirror, what is the relationship among h,d and t

57. ## chemistry

if you want a solution that is .1m in ions what mass of na2so4 must you dissolve in125 grams of water assume total dissolution of ionic solid.

58. ## biology

time day 0 day 1 day 3 day 4 day 5 day 7 count blank 7 10 5 14 9 8 low 45&49 64&70 62&69 75&79 80&82 68&72 high 45&49 72&78 100&112 180&195 250&267 208&226 Calculate the cell yield for the following data that were obtained using a coulter counter.

59. ## math

A spherical water tank holds 15000ft^3. What is the diameter of the tank? Use V=pie/6*d^3

60. ## math

a rectangle has a length of 13 units. the perimeter of a rectangle is twice its length. complete the table to find the perimeter of the rectangle if its width is 5,6,7 or 8 units wide

61. ## physics

two forces f1 and f2 are acting at a point such that the angles between them are (1) 30 degree (2) 60 degree and (3) 45 degree show that resultant forces will be

62. ## college algebra

A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)

63. ## physics

A small marble is suspended from a 45 cm string and creates a conical pendulum (like in the picture beside question #57). The marble revolves at constant speed in a horizontal circle with a 6.5 cm radius. Calculate the marble's velocity along the circle.

64. ## chemistry

Magnesium can be produced by reaction of magnesium oxide (MgO) with silicon (Si). The by-product of the reaction is magnesium orthosilicate (Mg2SiO4). A reactor is charged with 183.0 kg of MgO and 116.0 kg Si. Assume the reaction goes to completion.

65. ## chemistry

Calculate the enthalpy of atomization per unit volume for Rb. Express your answer in kJ/m3. Determine the volume (in mL) occupied at room temperature by 3.5e22 mercury (Hg) atoms in the liquid state.

66. ## chemistry

Atoms of ionized lithium gas (Li2+) are struck by neutrons moving at a velocity of 1.46e5 m/s. Calculate the shortest wavelength in the emission spectrum of Li2+ under these circumstances. You can assume that all electrons start in the ground state. Enter

67. ## Maths

The mean distance of the sun from the sun is 150 million kilometres.Express this in scientific notation.

68. ## math

A savings account opened 3 months ago now has a balance of Rs. 20,400. If the bank pays 8 percent p.a. Simple interest, how much money was deposited?

69. ## chemistry

Calculate the atomic weight of an element (X) given the following information: 26X: 26.000 amu at 0.1102 fractional abundance 28X: 28.000 amu at 0.6487 fractional abundance 29X: 29.000 amu at 0.2411 fractional abundance What element might the above problem

70. ## chemistry

Tantalum metal is produced by reaction of potassium heptafluorotantalate (K2TaF7) with elemental sodium (Na) in a reactor heated to 850oC. The by-products are potassium fluoride (KF) and sodium fluoride (NaF). The reactor is charged with 208.0 kg of K2TaF7

71. ## college algebra

A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)

72. ## Math/Physics

A quantity of water at 87 degrees C is cooled at a rate of 2844 MJ/h. After 40 minutes, the water has changed to ice, having a temperature of 243K. Calculate the mass of the water/ice. I know 243K = -30 degrees C I'm assuming I have to use my sensible and

73. ## Math

One jar of peanut butter and 3 loaves of bread cost \$6.70. Three jars of peanut butter and 1 loaf of bread cost \$9.32. Find the cost of a jar of peanut butter and a loaf of bread.

74. ## math

consider the functions f(x)=x^3-2 and g(x)=3 sqrt x+2: a. find f(g(x)) b. find g(f(x)) c. determine whether the functions f and g are inverse of each other. I have no clue where to even begin!

75. ## biomechanics

By actual measurement it has been shown that a sprinter pushes 1700N on each foot at the starting blocks . The right at 34o and the left at 52o Calculate the vertical component for each foot.

76. ## chemistry

Consider an electron in the ground state of hydrogen. (a)What is the least amount of energy needed to excite the ground state electron in Joules? (b) Is an electron in the ground state of hydrogen capable of absorbing a photon with energy of 1.38e-18

77. ## Math

16.Eliot spent 24 minutes solving 8 math problems.At that rate, how many math problems can he solve in 54 minutes? a.12 B.16 C.18 D.24 A? Can you explain why it isnt a

78. ## Math

determine the equation of a line that passes through (2,1) and is parallel to the line 3x-7y=5

79. ## University of Ghana

• A car moves 26 km due east then 14 km due north. It then turns along a path running north-west with 15 km, then 17 km due west. If the time for the entire journey is 2 hrs. • Find; • (a) the car’s average speed in m/s • (b) the car’s average

80. ## real estate finance

I need to find the mortgage loan amount and can't remember how to do it. The borrowers have a combined gross monthly income of \$50,400. Sale price is \$190,000 and buyers are able to obtain a 90% conventional FNMA/FHLMC loan at 4 3/4% for 30 years. The

81. ## Math 112 Help pelase

A class of 23 students was using square tiles to build rectangular shapes. Each student has more than one tile and each has a different number of tiles. Each student was able to build only one rectangular shape. All tiles had to be used to build the

82. ## math

49x+21x+9/2=0 write the discriminant of the following quadrctic and DETERMINE the nature of in each case.

83. ## Math

Which equation describes the relationship between x and y in the table below? x y 5 20 7 28 9 36 11 44 A.y=x+15 B.y=x+8 C.y=3x+5 D.y=4x 14.Henry rides his bike 6 miles every 4 days. At that rate how far will Henry ride his bike in 12 days? A.6 B.12 C.16

84. ## College math

Rebekah's recipe for 41/2 dozen cookies call for 6 cups of sugar. How many cups of sugar are needed to make 8 dozen cookies?

85. ## maths

If G is a group of order 12, the G must have a subgroup of all of the following orders EXCEPT Choose one answer. a. 0 b. 12 c. 2 d. 3 e. 6 f. 4

86. ## chemistry

An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light corresponding to the line in the emission spectrum with the smallest energy transition?

87. ## math

How do you write and absolute value statement describing the situation of something going down in value from \$900 to \$700? Thanks..

88. ## math

which expression below is equivalent to to 4/3x + 4 2/3?

89. ## physicsssss

Suppose that the magnetic field in the figure below has a magnitude of 1.1 T, the rod has a length of 0.83 m, and the hand keeps the rod moving to the right at a constant speed of 3.8 m/s. If the current in the circuit is 0.045 A, what is the average power

90. ## physics

a yo-yo is spun from rest by pulling on the string with a constant tension of 2.0N. The radius of the inner rod on which the string is strung around is 0.50cm. the tension applied for 5.0seconds after which the yo-yo is observed to spin with an angular

91. ## Math/Physics

Two kg of water at a temperature of 50 degrees C have 485.3 kJ of heat transferred from them, resulting in a mixture of ice/water at 0 degrees C. What is the composition of the mixture? This is what I did and would like verification of my answer.

92. ## math

How many feet will it take a car traveling at 120 mph to stop?

93. ## math

Help please Simplify the expression. √3(5-√3) + 6√3 a) 10√3 b) 11√3 - 3 c) 5√3 + 15 d) 6√3 + 5

94. ## Physical Chemistry

An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light corresponding to the line in the emission spectrum with the smallest energy transition?

95. ## math

find the functions f and g so that f.g=H: H(x)=sqrt x^2+3

96. ## math decimals

Is 1/6 > or< 0.16, because the repeating decimal in 1/6 is what confuses me.

97. ## Math

hailey wants to rake her entire yard. This morning she raked 1/3 of the yard, and this afternoon she raked another 3/5 of the yard. What fraction of her yard still needs to be raked?

98. ## chemistry

A gas in a discharge tube consists entirely of ions of the same element, of the same charge. Each ion has only one remaining electron. The voltage between the electrodes of the gas discharge tube is increased from zero. Electrons are accelerated across the

99. ## History

True or false history questions. im stuck on two questions? As expressed in the painting by Eugene Delacroix, early 19th century reformers found their rally cry in freedom and justice, a legacy from the french revolution. true or false? The french

100. ## Math

16.Eliot spent 24 minutes solving 8 math problems.At that rate, how many math problems can he solve in 54 minutes? a.12 B.16 C.18 D.24 A? 17.Ronald got 92% of the problems correct on a test.Which number could also represent 92%? A.9.2 B.0.092 C.9/2 D.46/50

101. ## History

History fill in the blank questions? in the _______ the french lose their colonial settlements and trading posts. The ___ offered the opportunity to help break Britain monopoly on trade.

102. ## language arts

what is the exact verb of swam

103. ## college algebra

A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.

104. ## fredric douglass question

What was the name of fredic's all black army called

105. ## MS. SUE!!!!!!

Factor each expression 3n squared - 3

106. ## chemistry

Atomic sodium is studied by photoelectron spectroscopy. What is the maximum wavelength of the incident radiation that will ionize the most weakly held electrons in sodium and scatter them so that their de Broglie wavelength measures 3.091e-10 m?

107. ## Geomatry

If a zipline ends at 8ft above the ground and goes upward at a 6 degree angle, how high will it begin?

108. ## Pre-Ap English

My teacher has assigned a project. I have to make a collage for Pip in Great Expectations. I have to use symbols that would represent what he loved or feared while he was in The Forge, London, The Forge again, then to Cairo. Do you know of any symbols I

109. ## Math

1.What is the greatest common factor of 28 and 35? A.4 B.7 C.9 D.14 B? 2.Dina has a savings account with \$276.38 in it. Her older sister Winnie has a savings account with \$329.84 in it. How much more is in Winnie's account than Dina's? A.53.46 B.54.36

110. ## biology

Devise a plan to carry out the following growth curve: Seed cells on day -1. Transfer cells to the test media on day 0. From day 0, plan to carry out your growth curve for 10 days. During this time, the cells are to be fed three times (excluding the day 0

111. ## Math

write an equation which must be true if the line from p(x,y) to a(25,0) is perpendicular to the line from P(x,y) to the center of the circle x^2+y^2=400

112. ## Prenatal Development

I'm having a hard time choosing a teratogen (anything that causes harm to a fetus), especially since all the easy ones to find ones are all taken--Radiation, Rubella, Syphilis, Hydrocodone, Heroine, Methamphetamine, Methadone, Caffeine, Nicotine,

113. ## math

which unti would be best to measure the distance around a equator?inchs,feet,yards or miles

114. ## Pre-calculus

1) What is the equivalent of this? -5x(2x+7y)+7xy-4x(y+3)

115. ## Science

Which would you measure in millimeters , a capacity of a juice box or the capacity of a water pitcher?

116. ## college algebra

A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.

117. ## language arts

what is the past tense of go

118. ## Math

7.Figure out the expression bellow (7+3)x2-5 A.8 B.15 C.22 D.30 B 8.When Henry went to the pet store he noticed that there were 12 large fish tanks with goldfish.The store clerk told him that there were 107 goldfish in each tank.How many goldfish were

119. ## math

The ratio of boys to the total number of students is 2:5. If there are 123 girls, how many boys are there? I estimated 49.2, is that correct?

120. ## Life Orientation

Identify and describe 3 environmental health hazards that cause ill health,accidents,crises and disasters within communities in South Africa and globally

121. ## social Studies

What are Julius Cesar offensive tools and weapons this warrior would use?

122. ## Math

I have to make a table with y on one side and x on the other. y=x. I have to provide integer values of x from -3 to 3. I don't understand how to do this. Please help!

123. ## algebra 2\arithmetic series

on the moon ,afalling object falls jest 2.65feet in the first second afther

124. ## Math

Ms.Sue You helped me with a table but now I have to do one where y=-x using integers from -3 to 3. I am still unsure of how to do this. When I tried I got the same results as the previous table. I really appreciate your help and am trying very hard to

125. ## Psychology

How do I find reliable sites for a research project, when I can't use journal articles published online, or personal websites?

126. ## Math

I need to make a table where y=-x using the numbers -3 to 3. I don't understand.

127. ## Math

20.Proms earned 82 dollars last week.She earned 6 dollars each hour and received a bonus of 10 dollars for exceptional work.Which equation can be used to find h the number of hours Proma worked last week A.6h+10=82 B.6h-10=82 C.10h+6=82 D.10h-6=82 A An

128. ## childhood.

Developmental Observation of young children is best done In

129. ## Stats

Is noise present in the differenced series (taking non-stationary data and making it stationary through first difference of a time series)?

130. ## algegra

can anyone help me on this? please (2x)^3 + 2^3x

131. ## Math

One week a company has a loss of \$216.70. The next week they have a gain of \$323.83. What is the net gain between the 2 wks?

132. ## grammar

Is saying "she's sitting in back of me" poor grammar.

133. ## History

The following countries revolted in 1848; however they were discouraged....? by the regular armies of the nation and ended in defeat Germany, France, Austria. or hingarians?

134. ## maths

Solve the inequality //(2x-1)(x+3)/-4/< 1 where /x/ is the modulus of x.

135. ## English

Why should grade 8 students have to do volunteer hours to graduate grade 8? Please provide me with atleast 6 points and so I can expand on it. Your help is very much appreciated!:)

136. ## chemistry

.592grams of na2so4

137. ## maths

Is every Fermat number 2^(2^n) + 1 composite for n > 4?

138. ## algebra

solve: 49w^2 - 100

139. ## Algebra

10-3(2x-5)=4x-6

140. ## Calculus

F(x)= ln((3x+6)^4 (x^3 -2)^5 ) F'(x)=

141. ## math

is a SQUARE A REGULAR POLYGON

can you help me with my grammar

143. ## algebra 2nd try

I need to simplify this 2/∛49 . I figured it out to be (2∛((49)^2))/49 but the system I added my answer to says this is incorrect. Please help me! Thanks anyone.

144. ## math

solve the problem (1500*30*400)-1/2*(1500*30*400)

145. ## english

how do we write a thesis statement?

146. ## math

x squared - 9 factor

147. ## Earth and Space Science

which is closer to earth a moon or galaxy?

148. ## Math

write an equation which must be true if the line from p(x,y) to a(25,0) is perpendicular to the line from P(x,y) to the center of the circle x^2+y^2=400