# Questions Asked onJanuary 29, 2013

1. ## grammar

Give the pronoun that would replace the underlined nouns... In the first sentence it says Sheila's picture won first place in the art contest And it has Sheila an picture underlined .... And I know that Sheila would b replaced with age but what about

asked by helping my son w/ H.Wan tryin to impress ;-)
2. ## Chemistry

The boiling point of an aqueous solution is 102.48 °C. What is the freezing point? I know that formula for freezing point is delta Tf = Kf*m but what do I plug in for each?

3. ## Physics

When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell. As a simple model of the supernova process, assume

4. ## Math Word problem !

Sarah works in an appliance store. She gets a commission in addition to her hourly pay. She earns a 2% commission for sales up to \$4000 and a 4% commission for all sales in a month above \$4000. Last month her sales were \$5200. How much was her commission?

5. ## Chemistry

Divers know that pressure exerted by the water increases about 100kPa with every 10.2 m of deptt. This means that at 10.2 m below the surface, the pressure is 201kPa; at 20.4 m, the pressure is 301kPa; and so forth. Given that the volume of a balloon is

6. ## AP Chem

The electron-domain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively. The answer is trigonal bipyramidal, T-shaped, respectively- I do not understand the approach PLEASE EXPLAIN HOW YOU GOT THE ANSWER!!!

1. How can this product be simplified? 5x2(2x – 3) 5x2 + 2x – 3 10x3 – 15x2 –5x2 7x3 – 15x2 2. What is the GCF of the terms of 8c3 + 12c2 + 10c ? 2 4 2c 4c 3. How can the polynomial 6d4 + 9d3 – 12d2 be factored? 3d2(2d2 + 3d – 4) 3d2(3d2 + 6d

8. ## trigonometry

as you walk on a straight level path toward a mountain, the measure of the angle of elevation to the peak from one point is 33 degrees. From a point 1000 feet closer, the angle of elevation is 35 feet. How high is the mountain?

9. ## Chemistry

What would be the effect of each of the following on the calculated molecular weight of the solute? a) some cyclohexane evaporated while the freezing point of pure cyclohexane was being measured. ( i think it would be higher) b)Some cyclohexane evaporated

10. ## english

What is the predicate of the following sentence? We ordered breakfast from room service? And my next question is what does predicate mean exactly?

asked by helping my son w/ H.Wan tryin to impress ;-)
11. ## Algebra Problem Solving

Denise's cell phone plan is \$29.95 per month plus \$.10 per minute for each minute over 300 minutes of call time. Denise's cell phone bill is \$99.95. For how many minutes was she billed? Answer is 700 but what is the algebraic equation?

12. ## Chemistry

The problem ask what is the mass of iron(iii) chloride contains 2.35 x 10^23 chloride ions. I understand the molar mass is 162.20 g/mol. - 2.35 x 10^23 chloride ions would be around 0.39 moles. - The work that my teacher gave me is 0.39 moles * (1 mol

13. ## math

in a garden, 2/3 of the flowers are roses. of the roses in the garden, 5/12 are yellow and the rest are red. what fraction of flower are red roses?

14. ## Physics

A 15700 kg sailboat experiences an eastward force 22000 N due to the tide pushing its hull while the wind pushes the sails with a force of 80900 N directed toward the northwest (45◦ westward of North or 45◦ northward of West). A) What is the magnitude

15. ## Chemistry

How many moles of ion are in the following? A. 0.0200 g AgNO3 - Could someone give me the step to solve such problems? Thanks

16. ## algebra

please explain the step for this I have no idea. the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and

17. ## Math

How many subsets does the set L = {5, 6, 7, 8} have?

18. ## algebra

please explain the step for this I have no idea. the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and

19. ## Rcm sr sec school

A block is on a horizontal slab which is moving horizontally with a simple harmonic motion of frequency two oscillations per second . The cofficient of static friction between the block and the slab is 0.50. How great the amplitude can be if the block does

20. ## Applied Calculus......

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1/2 in. margins on the sides. She further stipulated that each page should have an area of 60 in.2. Find a function in the variable x, giving the area of

21. ## science

1. Identify the phase or phases of matter (solids, liquids, and gases) that apply to each statement. More than one phase of matter may apply to each statement. a. Molecules do not move around, but vibrate in place b. Has volume but no particular shape c.

22. ## calculus

three bowls are filled to a depth of four units. a paraboloid, z=x^2 +y^2 for 0

23. ## Physics

If a 1.5V battery stores 5.0kj of energy,for how many minutes could it sustain a current of 1,2A?

24. ## Math

Sustem of equations. I have to solve the system of equations by graphing and solving. Ther are thirty-three students in the Chess Club. There are five more boys than girls in the club. Write and solve a system of equations to find the number of boys and

25. ## physics

A race car traveling northward on a straight, level track at a constant speed travels 0.750km in 20.0s. The return trip over the same track is made in 25.0s. What is the average velocity of the car in m/s for the first leg of the run? What is the average

26. ## geometry

The figure shows a partially completed set of steps to construct figure PQRS. The next step is to construct side RS of the figure so that side RS is congruent to side PQ and angle PQR is congruent to angle SRN. The chart shows the steps each of the four

27. ## physics

Three point charges, +6.0 µC, +1.7 µC, and −2.3 µC, lie along the x-axis at 0 cm, 1.7 cm, and 6.0 cm, respectively. What is the force exerted on q1 by the other two charges? (To the right is positive.) The Coulomb constant is 8.99 × 10 9 N · m2 /C 2

28. ## Chemistry

If there are 5 liters of oxygen gas (O2) at 300 K and 400 torr, what will it weigh? Answer in units of g. Do I use the Ideal gas law formula for this problem?

29. ## Chemistry

how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in volume of 250ml. given, Formula: H3PO4 Melting point: 42.35 °C Density: 1.88 g/cm³

30. ## Chemistry

Classify these mixtures as colloids, suspensions, or true solutions. fog, milk of magnesia, mayonnaise, blood, table salt in water, dust-free air I got fog, milk of magnesia, mayonnaise for colloids. Blood for suspensions. Table salt in water and dust-free

31. ## chemistry

how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in 250ml volume.

32. ## physics

A 2.0 kg mass is moving on a frictionless airtrack. It collides into a motionless 1.5 kg mass. What is the combined speed of the two masses if they stick together on impact?

33. ## Physics

A 0.35 m2 coil with 50 turns rotates at 5 radians per sec2 in a magnetic field of 0.6 Tesla. What is the value of the rms current in the coil if the coil has the resistance of 3.3 Ù? Can you also show me how you got the answer? Thanks so much

34. ## living systems / life process

Which part of a plant holds it upright and allows nutrients an water to flow through it? A.flowers B.roots C.leaves D.stem

35. ## maths

Find the derivative of 2x+3/ 3x-2 using first principle method.

36. ## trig

To the nearest degree, all of the following angles are solutions of the equation 2sin x + 4 cos 2x =3 except: (1) 40 degrees (2) 150 degrees (3) 166 degrees (4) 194 degrees

37. ## Physics

In a step-up transformer, which of the following statements is correct? Number of turns in primary is equal to number of turns in the secondary. Number of turns in primary is more than the number of turns in the secondary. Number of turns in primary is

38. ## Chemistry

A large container of cranberry juice is 2.5 liters (L). How many quarts (qt) of cranberry juice are in the container

39. ## Grammar

What would be 2 similes and 2 metaphors for butterfly?

40. ## geometry

parallelogram ABCD has vertices A(8,2),B(6,-4),And C(-5,-4).find the coordinates of D.

41. ## chemistry

A student obtained a clean, dry, glass stoppered flask. The weight of the flask and stopper was 32.634 g. The student filled the flask with water and obtained a mass for the full stoppered flask of 59.479 g. The density of water at the temperature of the

42. ## physics

The siren on an ambulance is emitting a sound whose frequency is 2421 Hz. The speed of sound is 343 m/s. (a) If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you

43. ## chemistry

25g of NaCl is deissolved in 100g of water. what is the concentration in percentage by mass?

44. ## Physics

Two spherical shells have a common center. A -3.00 × 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +4.00 × 10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitude

45. ## programming

1. Develop a menu-driven program that inputs two numbers and, at the user's option, finds their sum, difference, product, or quotient

46. ## help

Determine whether parallelogram JKLM with vertices J(-1, -1), K(4, 4), L(9, -1) and M(4, -6) is a rhombus, square, rectangle or all three.

47. ## Math

The price of a new car is 20,000. Assume that an individual makes a down payment of 25% toward the purchase of a new car and secures financing for the balance at the rate of 10%/year compounded monthly. What monthly payment will be required to make if the

48. ## math

A park ranger finds that 35% of the park visitors stay at the campground. Of 105 visitors stayed at the campground in one day, how many visitors did the park have that day? i got 36.75 people and then i rounded and got 37 people.

49. ## math

On a centimeter dot array, draw all possible rectangles with a perimeter of 16cm and sides whose lengths are whole centimeters. Label the lengths of two adjacent sides of each. Also the area of each rectangle. Compare the shapes of the rectangles with the

50. ## physics

A golfer hits a golf ball with a velocity of 36.0 meters/second at an angle of 28.0°. If the hang time of the golf ball is 3.44 seconds, what is the range of the golf ball?

51. ## Math

If A and B are acute angle such that SinA=8/17 and CosB=3/5.Find 1, Cos(A+B) 2, Sin(A+B) 3, Sin(A-B)

52. ## statistics

in certain lottery, you must select 6 numbers (in any order)out of 37 correctly to win. a)How many ways can 6 numbers be chosen out of 37 numbers?

53. ## science

True or false A.the moon revolves around the earth B.it takes one year for the earth to revolve around the sun Che earth rotates once a day

54. ## Algebra

V is between 4.5 and 4.6 inclusive.

55. ## Chemistry

At –11.0 °C (a common temperature for household freezers), what is the maximum mass of aspartame (C14H18N2O5) you can add to 1.50 kg of pure water and still have the solution freeze? Assume that aspartame is a molecular solid and does not ionize when it

56. ## Physics

Two spherical shells have a common center. A -3.00 × 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +4.00 × 10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitude

57. ## math

Justine can make one place mat out of 1/2 yard of material. If she has 5 feet of material, how many place mats can she make?

58. ## math

estimate the sum or difference with fractions 2 3/5- 1 3/8

59. ## Calculus

a swimming pool has the shape of the ellipse given by (x^2)/3600 + (y^2)/1600 = 1 The cross sections perpendicular to the ground and parallel to the y-axis are squares. Find the total volume of the pool.

60. ## Physics

Two spherical shells have a common center. A -3.00 × 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +4.00 × 10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitude

61. ## Chemistry

What is the limiting reagent when 10.8 g water reacts with 4.7 g Na to produce NaOH and H2?

62. ## math

How do you shade in .625 on a hundreds grid ( for fifth grade)

63. ## Physics

For the following three vectors, what is 3C·(2AxB)? A = 2.00ihat + 3.00jhat - 5.00khat B= -3.00ihat + 5.00jhat + 2.00khat C = 9.00ihat - 8.00jhat

64. ## science

Would you expect a substance to be a solid, liquid, or gas at absolute zero? Explain your answer.

65. ## Physics

A bicyclist is riding at a tangential speed of 13.2 m/s around a circular track with a radius of 36.5 m. If the magnitude of the force that maintains the bike’s circular motion is 378 N, what is the combined mass of the bicycle and rider? Answer in units

66. ## Math

Amanda says her quilt has 9 equal parts. Jeremy says it has 3 equal parts. Can they both be correct? Explain.

67. ## math

Split the middle term of xsq+5x-1800

1. How can this product be simplified? 5x^2(2x – 3) 5x^2 + 2x – 3 10x^3 – 15x^2 –5x^2 7x^3 – 15x^2 2. What is the GCF of the terms of 8c^3 + 12c^2 + 10c ? 2 4 2c 4c 3. How can the polynomial 6d^4 + 9d^3 – 12d^2 be factored? 3d^2(2d^2 + 3d –

69. ## Physics

Bob and Bob Jr. stand at open doorways at opposite ends of an airplane hangar 25 m long. Anna owns a spaceship, 40 m long as it sits on the runway. Anna takes off in her spaceship, then swoops through the hangar at constant velocity. At precisely time zero

70. ## ss

What was the significance of the court case of Plessy vs. Ferguson

71. ## geometry

are the triangles similar? if so,state the similarity and the postulate or theorem that justifies your answer.

72. ## math

A chord of a circle 38.8 cm long is subtended by a 150 degree central angle.Calculate the radius of the circle.

73. ## Math

Suppose that you have a supply of a 25% solution of alcohol and a 75% solution of alcohol. How many quarts of each should be mixed to produce 90 quarts that is 60% alcohol?

74. ## Physics

A circular loop is rotated 360° in a magnetic field. Which of the following is true for the induced current produced in the coil? only the magnitude of the current changes only the direction of the current changes both the magnitude and the direction of

75. ## Physics

Vector A has a magnitude of 5.00 units, vector B has a magnitude of 9.00 units, and the dot product A·B has a value of 42. What is the angle between the directions of A and B?

76. ## Chemistry

How much Na is needed to react with H2O to liberate 179 mL H2 gas at STP? Answer in units of g Please help me with what formulas to use and what to do.

77. ## physics

A constant force is exerted for a short time interval on a cart that is initially at rest on an air track. This force gives the cart a certain final speed. Suppose we repeat the experiment but, instead of starting from rest, the cart is already moving with

78. ## math

How long will it take a car 3m long moving at 100km/h to overtake a truck 10m long moving at 50km/h if the car is 10m behind the truck?

79. ## Algebra

The sum of the squares of the largest and smallest of three consecutive odd integers is 353 less than 3 times the square of the middle one. Find the integers.

200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?

81. ## Grammar

Which of the following words does NOT share the same etymology as the vocabulary word symmetry? A.synthesize B.symbol C.symphony D.sympathetic I think the answer is B. symbol. Thanks for the help :)

82. ## Science

A car is driven east for a distance of 43 km, then north for 20 km, and then in a direction 27° east of north for 25 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's

83. ## MATH

There are 5 male students to every 9 female students at a local school. Select the statement of the condition when there are 30 male students

84. ## math

A person in a lighthouse notices two boats out on the ocean. The angle of depression to the further boat is 20 degrees while the angle of depression to the closer boat is 75 degrees. What is the distance between the two boats if the observer in the

85. ## math

the areas of two similar rectangles are 338 cm squared and 73 cm squared. what is the similarity ratio of the perimeters

86. ## Physics

A bicyclist is riding at a tangential speed of 13.9 m/s around a circular track with a radius of 38.4 m. If the magnitude of the force that maintains the bike’s circular motion is 378 N, what is the combined mass of the bicycle and rider? Answer in units

87. ## Logic

In a survey of 10 film historians, half voted for Nosferatu as the greatest vampire film ever made, and the other half voted for Dracula. However, when asked which lead vampire character they considered more charismatic, all of the film critics chose

88. ## Geometry

Given a quadrilateral having coordinates A(6,8), B(12,4), C(6,0) and D(4,0), first graph the quadrilateral on graph paper and connect the vertices. Shade in the quadrilateral and then reflect it across the x-axis. Do NOT shade in the resulting image. Now

89. ## Physics

A small plastic ball with a mass of 6.80 10-3 kg and with a charge of +0.161 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0°

90. ## computer science

Write a method printBackwards that prints an array of integers in reverse order, in the following format. For the array {1, -3, 4, 7, 2}: element [4] is 2 element [3] is 7 element [2] is 4 element [1] is -3 element [0] is 1

91. ## math

Investing inhertance.Norman invested one-half of his inheritance in a CD that had a 10% annoul yield. He lent one-quarter of of his inheritance to his brother -in-law at 12% simple interest. His income from these two investments was \$6400 for 1 year. How

The electron-domain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively.

93. ## finance

describe the difference between the substance and form of financial statements and give an example of each

94. ## calculus

The base of a certain solid is the triangle with vertices at (-14,7), (7,7), and the origin. Cross-sections perpendicular to the y-axis are squares. What is the volume?

95. ## Math

Write each rate as a fraction in lowest terms: 48 gallons in 14 minutes

96. ## Physics

1) Find the magnitude of the gravitational force a 68.6 kg person would experience while standing on the surface of Earth with a mass of 5.98 × 10 24 kg and a radius of 6.37 × 10 6 m. The universal gravitational constant is 6.673 × 10 −11 N · m2 /kg

Sal is a shareholder in XYZ Corporation. XYZ Corporation made defective products, and many individuals have filed lawsuits due to the defects. As a shareholder, Sal may A. not be held personally liable for the defects. B. be held personally liable only if

98. ## emperature

At six a.m, the temperature outside is 12 degree celsius. By noon, the temperature is 5 degree celsius warmer. What is the temperature at noon?

99. ## math

Tom had some money. He spent \$330 on books and 3/5 of the remainder on toys. After that, he had 1/4 as much money as he had first. How much money did Tom has left?

100. ## chemistry

Solutions of sulfuric acid and lead acetate react to form solid lead sulfate and a solution of acetic acid.5.80 of sulfuric acid and 5.80 of lead acetate are mixed. Calculate the number of grams of acetic acid present in the mixture after the reaction is

101. ## social studies

Which document states that only the people have the power to govern? A.declaration of independence B.the Virginia declaration of rights C.the VA statute for religious freedom D.the bill of rights And who wrote it?

102. ## Physics

A point particle that has a charge of 12.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 10.0 cm, y = 0. The electric force on a point particle that has a charge of 5.0 µC at x = 20.0 cm, y = 0 is -(19.7) N .

103. ## chemistry

describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL

104. ## geometry

The verticles of triangles BAD are B(1,3) A(7,5) and D (9.-3). If E is the midpoint of segment BA and F is the midpoint of segement AD show that a. segement EF is parallel to BD b. Ef = 1/2BD

105. ## Math

Write each rate as a fraction in lowest terms: 48 gallons in 14 minutes

106. ## Chemistry

An aqueous KNO3 solution is made using 73.4g of KNO3 diluted to a total solution volume of 1.86 L. Calculate the molarity of the solution. (Assume a density of 1.05 g/ml for the solution.)

107. ## Physics

Two tiny conducting spheres are identical and carry charges of -19.8 µC and +54.5 µC. They are separated by a distance of 2.45 cm. (a) What is the magnitude of the force that each sphere experiences, and is the force attractive or repulsive? 1 N 2

108. ## Analytic Geometry

Find the equation of the circle with radius sqrt2 tangent to the line x+y=3 and having its center on the line y=4x

109. ## stats

identify the independent and dependent variable A group of college students were given a short course in speed-reading. The instructor was curious if a monetary incentive would influence performance on a reading test taken at the end of the course. Half

110. ## math

Pete is standing 2 feet away from a mirror on the ground. Pete is 5 feet tall and can just see the top of the tree in the mirror from where he is standing. The mirror is 8 feet away from the base of the tree. how tall is the tree?

111. ## science

Calculate the partial pressure of oxygen gas a diver breathes with a heliox mixture containing 2% oxygen at a depth of 100 metres where the total pressure is 100kPa

112. ## Physics

a particular jet aircraft must reach a speed of 80 m/s in order to take off. If the runway is 1500 m long, determine the acceleration

113. ## Social Studies

which central american countries have the shortest land distance between the pacific ocean and the caribbean sea Panama and Costa Rica? Or just Panama?

114. ## Math

If A and B are acute angle such that SinA=8/17 and CosB=3/5.Find 1, Cos(A+B) 2, Sin(A+B) 3, Sin(A-B)

115. ## Geometry

ABCD is a parallelogram. Segment AC = 4x + 10. Find the value of x and y.

116. ## Chemistry

Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 19.6 g of biphenyl in 25.1 g of benzene?

Which is recommended when including a career objective on the resume of a recent college graduate?

118. ## science

how can i prepare this solution? Dissolve 24.82g of sodium thiosulphate in each cubic decimeter of solution to make astock of 0.1M. Dilute this solution 20-fold. URGENT PLEASE!!!!!!!!!!!!!!!

119. ## math

A model rocket is built to a scale of 3 cm =5 m if the model is 9.4 cm tall how tall is actual rocket

120. ## chemistry.....help plz

what is the density of methane gas at 20 degree and 115kpa?

121. ## Math

Convert each of the following points from rectangular coordinates to polar coordinates. (-1, 1) A) (sqrt(2), pi/4) B) (sqrt(2), 3pi/4) C) (-sqrt(2), pi/4) D) (-sqrt(2), 3pi/4) E) None of These

122. ## science

How many seconds does it take for mercury to go from 0 degrees celsius to 300 degrees celsius?

123. ## Math

two similar figures have lengths in the ratio of 7/4. Give the ratios of parimeters and areas?

124. ## Physics

Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used

125. ## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 6.10 m/s?

126. ## Chemistry

on which stucture of C8H10 can we get mono-nitro product with nitration?

127. ## algebra 2

suppose you want to row your boat across a 3 mile wide river and row at a speed of 2 mi/hr. the current is flowing south at a rate of 1.2 mi/hr. at what angle upstream should you aim your boat so that it ends up going straight across?

128. ## chemistry

Calculate the number of grams of acetic acid present in the mixture after the reaction is complete.

129. ## Algebra

A board 5 feet long is cut into two pieces such that the length of one piece is two-thirds of the length of the other piece. Find the length of the shorter piece of board

130. ## Physics

The density of a fresh water is 1000 kg/m^3 a 12 cm side cube is submerged to a depth of 30 cm 1-cauculate the pressure at:a-the bottom surface of the cube B-the top surface of the cube 2-calculate the force entered by water on each surface

131. ## Physics

The density of a fresh water is 1000 kg/m^3 a 12 cm side cube is submerged to a depth of 30 cm 1-cauculate the pressure at:a-the bottom surface of the cube B-the top surface of the cube 2-calculate the force entered by water on each surface

132. ## Algebra

A fraction reduces to 36. If its numerator is 6x^5, what is its denominator? I need steps, I am a mom who is out of her league

133. ## Chemistry

When 4.65 g of a nonelectrolyte solute is dissolved in 475 mL of water at 27 °C, the resulting solution exerts an osmotic pressure of 931 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the

134. ## Math

Judy bought a coat at a 20% discount sale for \$68. What was the original price of the coat?

135. ## Chemistry

How many grams of HgBr2 can be produced if 10.0 grams of Hg reacts with 10 grams Br2

136. ## Physics

A person walks in the following pattern: 2.8 km north, then 2.7 km west, and finally 6.9 km south. Construct the vector diagram that represents this motion and from it judge how far and in what direction a bird would fly in a straight line from the same

137. ## physics!

A truck driver travels a distance of 100 miles due East. He then turns at an angle of 35 degrees S of E and travels a distance of 50 miles. What is the resultant displacement? What is the direction?

138. ## Math

A particle moves in a linear motion according to: s = 10 - 6t2. Find the acceleration of the particle at t = 4s. acceleration in m/s2 = My Answer s'= 0-12t s"= -12 acceleration in m/s2 = -12

139. ## Maths

A bouncy ball bounces 16m on its first bounce and then 8m on the second bounce. Each time it bounces the height halves. How high will the ball bounce on the 10th bounce?

140. ## Math

A mechanical engineering student wishes to inscribe a rectangle in a quarter circle of radius 2.00 cm. Determine the dimensions of the rectangle that will give it the greatest area. length in cm = height in cm = My attempt on find the relationship between

141. ## Algebra

A rectangle was 25 cm longer than it was wide. A new rectangle was formed by decreasing the length by 6 cm and decreasing the width by 5 cm. The area of the new rectangle was 585 cm squared. Find the dimensions of the original rectangle.

142. ## Chemistry

A sample of nitrogen gas is collected over water at a temperature of 23°C. What is the pressure of the nitrogen gas if the atmospheric pressure is 791 mm Hg? Answer in units of mm Hg

143. ## math

A pair of ordinary jeans at A-Mart costs \$50 less than a pair of designer jeans at Enrico's. In fact, you can buy four pairs of A-Mart jeans for less than one pair of Enrico's jeans. What is the price range for a pair of A-Mart jeans?

144. ## Pre Calculus

There are ten equal parts to a circular track for 2 toy cars and the distance from the inner to the outer is 3.4 inches. What is the width of the track?

145. ## Physics

When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell. As a simple model of the supernova process, assume

146. ## physic

a motor of mass 800kg traveeling at 20m/s is brought to rest by brakes in 100m calculate the average braking force required if the object moves in three second

147. ## Physics

Find the magnitude of the gravitational force a 65.4 kg person would experience while standing on the surface of Earth with a mass of 5.98 × 1024 kg and a radius of 6.37 × 106 m. The universal gravitational constant is 6.673 × 10−11 N · m2/kg2.

The electron-domain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively. The answer is trigonal bipyramidal, T-shaped, respectively- I do not understand the approach

149. ## Math

The number in a power that is used as a factor is what?

150. ## Physics

A point particle that has a charge of 12.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 10.0 cm, y = 0. The electric force on a point particle that has a charge of 5.0 µC at x = 20.0 cm, y = 0 is -(19.7) N .

151. ## Physics

Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used

152. ## math

495 Find three coterminal angles: ____________ ____________ ____________ Standard position angle: Reference angle:

153. ## science physics

A car slows to a stop with an average acceleration of - 3.0 m/s2. How long will it take to slow the car from 15 m/s to a position of rest?

154. ## Physics

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 11.0 m until, at t = 1.86 s, it is traveling east. The car does not alter its speed during the turn.

155. ## math

how do I order these fractions from least to greatest 5/9, 2/3, 7/12?

156. ## ENGLISH HELP?? 2 QUESTIONS.

Can you answer two questions for me? Thanks!! "On average each of us consumes nearly 53 gallons of water a day at home. Some citizens of water-poor countries survive on as little as 4 gallons a day. We've grown used to seeing water flow out of our taps and

157. ## Language

What are the three main parts of a research report? 1.title, body, conclusion 2.introduction, body, sources 3.introduction, body, conclusion 4.introduction, evidence, conclusion and I just need it checked, I believe that it is #4...is that right?

158. ## chemistry

what is the density of methane gas at 2o degree and 115kpa?

159. ## Physics

The mass of a certain neutron star is 1 × 1031 kg (5 solar masses) and its radius is 5500 m. What is the acceleration of gravity at the surface of this condensed, burned-out star? The value of the universal gravitational con- stant is 6.67 × 10−11 N ·

160. ## Chemistry

Is this true or false? Thanks A mole of CCl4 is composed of one atom of carbon and four atoms of chlorine. I put false because it contain one mole of C 4 mole of Cl. Each mole have more than one atoms. Thanks

161. ## physical science

In terms of energy, the general chemical equation AB+CD+energy = AD+CB represents a (an)_________ reaction.

162. ## physics

a 1,000 kg car is rolling down the street at 2.5 m/s. How fast would a 2,500 kg car have to collide into it in order to bring it to rest(0 m/s) ?

163. ## Physics

Harry the painter swings year after year from his bosun’s chair. His weight is 630N and the rope, unknown to him, has a breaking point of 365 N. A.) Why doesn’t the rope break when he is supported as shown at the left above? To answer this, ﬁnd the

164. ## chemstry

the hiv virus that causes aids destroys the immune system in the body. classify the hiv virus and explain the statement

165. ## Algebra

A rectangular garden is fenced on three sides with wall forming the fourth side. The total length of the fence is 120m. The ares of the garden is 1600 m(squared). Find the dimensions of the garden.

166. ## math

Kayla designed a rectangular patio that was 3 times as long as it was wide and had a perimeter of 160 feet. What was the area of the patio?

167. ## Social Studies

Name a central american country that shares a border with Mexico Guatemala and Belize

168. ## Social studies

Conquest in the americas. How might the history of europeans in the americas be different if the indians had not been killed by european diseases???

169. ## Chemistry

Need for two balanced chemical equations? I am in need of these two equations which I however do not know how they react. If anyone could help, it is greatly appreciated :) "Formation of products by heating a solid mixture of calcium propanoate and soda

170. ## math

If it is 18 degrees fahrenheit, what would be the temperature if it dropped 58 degrees fahrenheit?

171. ## Algebra

The edge of one cube is 5cm shorter than the edge of a second cube. The volumes of the two cubes differ by 875cm^3. Find the edge of the smaller cube.

172. ## Physics

A small plastic ball with a mass of 6.80 10-3 kg and with a charge of +0.161 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0°

on one test, chi answered 76 out of 100 questions correctly. on another test, he answered test, he answered 7 out of 10 questions correctly. write these scores as decimals and compare them.

174. ## Math

write 3 different ones.numbers you could add to where you need to regroup to find the sum

175. ## maths

if x and y vary inversely and x=18 when y=8,find x when y=16

Under the Revised Uniform Partnership Act a. partners are co-owners of partnership property b. partners don't have transferable economic interests c. partnership property is owned by the partnership d. the partnership is an aggregate rather than an entity

177. ## Math - check answer

Given s = 4t + 11t3, find the velocity when t = 1 s. velocity in m/s = My Answer: S'=4+33t^2 =4+33 =4+33 =37 velocity in m/s = 37 Can you please confirm this is correct. Thank you

178. ## Statistics

Which of the following conditions doesn't need to be met before you can use a two-sample procedure? The responses in each group are independent of each other. Each group is considered to be a sample from a distinct population. The same variable is measured

179. ## geometry

Angle BAC equals 1/2 angle ACB; what is angle DAB?

180. ## math

461,592 x 308 _________ 3592736 + 13947760 ___________ 142,070,336 What is the first number that is incorrect in the work above? Please answer and explain.

181. ## chemistry

a weather balloon partially filled w/ 33.5 L of helium @ 18 deg C & .95 atm. what volume will helium occupy @ -23 deg C w/ a pressure of 3 x 10 to the -3 atm?

182. ## Chemistry

If 225.O grams of NO react with excess NH3,how many grams of H2O are produced

183. ## Math

A car is projected directly up an incline and its location from its start point is given by the formula s = 9t - 5t2. Determine its initial velocity and initial acceleration. initial velocity in m/s = initial acceleration in m/s2 = My Answer s'=9-10t

184. ## college physics

A cylindrical rod of cross-sectional area 5.0mm2 is made by joining a 0.30m rod of silver to a 0.12m rod of nickel. The silver end is maintained at 290K and the nickel end at 440K. given the thermal conductivities of silver and nickel are 0.42kWm-1K-1 and

185. ## science

Describe the body’s stress response in terms of the actions of the adrenal cortex and medulla. What are the different hormones involved, where are they produced, what type of gland produces them, what type of chemical are they, and how do they contribute

186. ## Math

Find the discount sale price of a \$80 item that is on sale for 30% off. (Round your answer to the nearest cent.)

187. ## chemistry

Explain briefly why cuso4 dissolve more easily in water than organic solvent

188. ## Social Studies

Nicaragua shares borders with which two countries? Honduras and Costa Rica

189. ## physics

what is meant by the change go temperature of 1 degree celcius on the scale of a plantinum resistance thermometer

190. ## Social Studies

Is overfishing a social issue?

191. ## grammar

How do you combine these two sentences: The first atomic bomb was tested in 1945. It was exploded on the White Sands Proving Grounds.

192. ## math

During an art contest at your school, you and a classmate each won blue ribbons for 1/3 of the pieces you entered in the contest. You won 2 blue ribbons and your classmate won 3 blue ribbons. Explain how this could be.

193. ## Math help!

Which is the better investment over a y year term? Calculate each one. Investment that offers a rate of 2.25% per annum, compounded semi-anually. Investment that offers a rate of 2.15% per annum, compounded quarterly. Investment that offers a rate of 1.95%

194. ## science

The seasons change BC A.the earth rotates slowly or B. The earth is tilted on its axis as it revolves around the sun

195. ## Math

Two roads intersect at right angles. A water spring is located 65 m from one road and 55 m from the other road. A straight path is to be laid out to pass the spring from one road to the other. Find the least area that can be bounded by the roads and the

196. ## Algebra

The formula h=280t-7t^2 gives the height, h in meters, of a rocket t seconds after take off. The maximum height reached by the rocket is 2800 m. How long will it take the rocket to reach this maximum height?

197. ## Algebra

The attendance at a baseball game was 400 people. Student tickets cost \$2.00 and adult tickets cost \$3.00. Total ticket sales were \$1050. How many tickets of each type were sold?

198. ## pre-calculus

Suppose the function p= -1/8 x + 100 (0 =< x =

199. ## algebra

how much water at 90 degree fahrenheit must be mixed with 30 gallons of water at 40 degrees fahrenheit so that the resulting temperature of all of the water would be 75 degree fahrenheit

200. ## chemistry

A gas has a pressure of 2.96 atm when its volume is 3.93 L. What will the pressure be when the volume is changed to 1.09 L, assuming constant temperature? Express the ﬁnal pressure in torr. Answer in units of torr

201. ## chemistry

Determine the maximum mass of calcium iodate that can be dissolved in a 10.0L jug of 3.25x10^-2 molar calcium sulphide solution.

202. ## Math

Account numbers for Northern Oil Company consist of seven digits. If the first digit cannot be a 0 or 1, how many account numbers are possible?

203. ## Math - check answer

A rifle bullet is fired directly upward from the ground. Its height above the ground at any instant of time t is given by the formula, s = 63t - 9.8t2. Assuming there is no air resistance how high will the bullet rise? height in meters = My Answer S'=

204. ## math

What is 461,592 x 308? Show and explain answer

205. ## english

What are the nouns and verbs in this sentence? Life is full of choices, so I must learn to make good ones.

206. ## Chemistry

An equilibrium that would favour the products is A. NH4+(aq) + H2PO4-(aq)= NH3(aq) + H3PO4(aq) B. HCN(aq) + HS-(aq)= CN-(aq) + H2S(aq) C. HCO3-(aq) +,HBO3 2-(aq)= H2BO3-(aq) + CO3 2-(aq) D. HSO4-(aq) + HSO3-(aq)= H2SO3(aq) + SO4 2- (aq) The answer is C.

207. ## social studies

Detailed rules set down by the federal government are called?

208. ## Math-Stat

Jane and Bob are on the same game show. They answer one question, either True or False. The probability that Bob is correct is 70%. The probability that Jane is correct is also 70%. Moreover, the probability that Bob is correct given Jane is either correct

209. ## Math

How to calculate this? 4 year term investment. The investment offers a rate of 2.25% per annum, compounded semi-annually. Another investment offers a rate of 2.25% annum, per compounded quarterly. Final investment offers a rate of 1.95% per annym, simple

210. ## Science

An unknown substance has a volume of 25 mL. It is placed into a different container and its volume changes to 50 mL. What happened? Is it a change in state?

211. ## Chemistry

How many grams of N2 are produced when 15.0 moles of NH3 react with excess NO

212. ## Physics

A 2.98 kg ball is dropped from the roof of a building 158.3 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.1 N on the ball. A.)How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s^2.

213. ## Physics

An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.9 km, but when the snow clears, he discovers that he

214. ## Johnson

How do I record this transaction? Sold inventory on account for \$500, cost of merchandise sold was \$300. (Record the sale first and then the cost.)

216. ## chemistry

the addition of 50 g of salt to a sample of pure water causes its freezing point to be reduced from 0.0 C to -3. 15 C. Determine how by how many degrees the freezing point dropped for every 10 g of salt added?

217. ## ENG

I'm trying to write a paragraph with levels of generality for English. Here's what I have so far... I need help with grammar and punctuation... also does it make sense ? In the city of Carson, California there is a small house on Mesa Boulevard that is

218. ## chemistry

peice of sodium metal reacts with water. 246ml volume of hydrogen gas was collected over water at 25 celsius and at an atmospheric pressuric pf 101.3 kpa. what was the pressure of dry hydrogen? what is the mass of sodium used up by the reaction?

219. ## chemistry

describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL

Write an equation in point slope form of a line parallel to 12x-2y=6 and passes through the point (-4,-3)

221. ## social studies

what are the legislative district numbers for zip code 29621-3504

222. ## math

make a dot at 0.13m and lable it with the letter c

223. ## Algebra 1

Find three points that satisfy the following conditions. The x-coordinate and the y-coordinate are additive inverses of each other. Any help or clues would be very much appreciated.

224. ## Math

Eight times a number equals 24 more than two times the number. What is the number?

225. ## Math

Find a number such that one-half of the number is 12 less than two-thirds of the number

226. ## Science

3. Planets did not form in the asteroid belt because _____. it was too cold some of the asteroids were too big Jupiter's gravity may have been too great the asteroids moved too slowly

227. ## Math - check answer

Given s = 10 - 10t2 + 45t3, determine the velocity when t = 1 s. velocity in m/s = My Answer S'= 0-20t + 135t^2 S'(1) = -20+135 = 115 velocity in m/s = 115 Can you please confirm this is correct. Thanks!

228. ## history

ms.sue,thank you for the answer, but i have to discribe the things Juan Ponce De Leon discovered in his journey to the new land! My homework question is, discribe the things he discovered in his journey to the new world like plants,animals,people and

229. ## Math

Amanda says her quilt has 9 equal parts. Jeremy says it has 3 equal parts. Can they both be correct? Explain.

230. ## Math

The power P delivered to a load by a current of i amperes through a resistance of 19 ohms, when 110 volts are supplied at one end of the line, is given by the formula P = 110i - 19i2 . Determine the maximum power that can be delivered. maximum power in

231. ## Math

Can somebody help me solve this problem ? I am not so good with probability. - A bag contains 2 green marbles and 3 white marbles. One marble is drawn at random and not replaced. Then a second marble is drawn. What is the probability that the first marble

232. ## math-old

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please. math - Ms. Sue, Tuesday,

233. ## Chemistry

An equilibrium that would favour the products is A. NH4+(aq) + H2PO4-(aq)= NH3(aq) + H3PO4(aq) B. HCN(aq) + HS-(aq)= CN-(aq) + H2S(aq) C. HCO3-(aq) +,HBO3 2-(aq)= H2BO3-(aq) + CO3 2-(aq) D. HSO4-(aq) + HSO3-(aq)= H2SO3(aq) + SO4 2- (aq) The answer is C.

234. ## Social Studies

According to Sigmund Freud, human behavior was? A)ruled by two related emotions: love and pity. B)determined by the physical makeup of the brain, and could not be altered. C)the one factor that made human beings superior to all other animals. D)strongly

235. ## pre calc

Suppose the function p= -1/8 x + 100 (0 grtr&= x ~12) relates the selling price p of an item to the quantity x that is sold. Assume that p is in dollars. What is the maximum revenue possible in this situation?

236. ## Math - check answer

Given v = 2t3 + 87t2 - 636, determine the acceleration for t= 1 s. acceleration in m/s2 = My Answer v'= 6t^2+174t V"= 12t V"(1) = 12 acceleration in m/s2 = 12 Can you please confirm this is correct.. Thanks!

237. ## Math

A particle is projected along an inclined plane with a velocity given by the formula v = 4.4t2 + 10.1t -23.2. Determine the acceleration of the particle when t = 1.5 s. acceleration in m/s2 = My Answer V'=8.8t+10.1 V"=8.8 V"(1.5)= 8.8 acceleration in m/s2

238. ## english

Identify the nouns and verbs in this sentence please. The Lord is my strength and my salvation; in him I will trust.

239. ## analytic geometry

The (x,y) is equidistant from (0,0) and (4,-2). Find its algebraic equation.

240. ## Chemistry

I'm given sequences and asked to classify them as "Most likely an amphipathic alpha helix", "Most likely an amphipathic beta sheet", "Most likely a turn/loop" or "Not Amphipathic" Sequence 1: Arg-Phe-Gln-Ile-His-Val-Gln-Phe-Glu Sequence 2:

241. ## Statistics

How will I know the modal class from a grouped data w/ equal class sizes if the highest frequency is 7 but then it appears thrice in 3 intervals. 34.00 - 39.69 frequency: 7 39.70- 45.39 frequency: 7 62.50-68.19 frequency: 7

242. ## Chemistry

How many grams of AgNO3 (silver nitrate) are contained in 425 mL of a .15 M solution of AgNO3?

243. ## math

64 76 46 88 88 43 99 50 55 would the mode change if a 76 was added to the data in the set?

244. ## Math

Which is the better investment over a y year term? Calculate each one. Investment that offers a rate of 2.25% per annum, compounded semi-anually. Investment that offers a rate of 2.15% per annum, compounded quarterly. Investment that offers a rate of 1.95%

in a survey, 8 out 10 students said they would like more time for recess. out of 100 teachers, 78 said they would not like to add more time for recess. write these figures as decimals and compare them

246. ## MATH

AMANDA TEST SCORE ON SIX TESTS WAS 94. FIVE OF THE SIX TEST SCORES WERE 88, 94, 93, 95 & 99. WHAT WAS THE SIXTH TEST SCORE?

Using input output tables input 3 4 5 6 0 10. Output 9 16 25 36 0 100 what is the input output rule?

248. ## math

mr. greatest bought an aotomobile for \$250,000and paid a 20% down payment .it the rate of interest is 6.5% per year, and he agrees to pay the balance in 20 equal monthly installments,what is the amount of each installment?

249. ## organic chemistry

A sample of Compound X is analyzed and found to have a melting point range of 110-120 °C. Would you try to purify it further to get a sharper melting point? Why or why not?

250. ## calculus

In the given right triangle, find the missing length.

251. ## PHYSICAL SCIENCE

WHAT IS THE GPE OF A BOOK THAT HAS A MASS OF 1KG THAT IS SITTING ON A SHELF THAT IS 2M ABOVE THE GROUND?

252. ## mechanics of materials

The second moment of area of a hollow cylindrical beam with an inner radius of 18mm and an outer radius of 20mm is equal to A) 2.7x10-9m 4 B) 4.3x10-8 m 4 C) 7.9x10 - 13m 4 D) 2.7x10 3 m 4

253. ## history

what did Juan Ponce De Leon discover in his journey to the new world: plants,animals,people,land?

254. ## math

find the quotient of 488 and 8 by partitioning the dividend. show your work

255. ## Trigonometry

What is -6i in standard form? It is originally in trig form.

256. ## math

beginning june 1 lydia will take dance class every 8 days and guitar lessons every 12 days what is the first day lydia will have both dance class and a guitar lesson

257. ## Algebra

On a map 1/2 in=8 miles. What would the actual distance be if there 7 1/4 miles?

258. ## Health

If not effectively managed, stress can lead to ________.

259. ## Chemistry

how would a dilution be performed, starting with a concentration .50 M Cacl2 solution, to obtain 250ml of a .060M solution?

260. ## math

Sarah ordered 4 pepperoni pizzas. She wanted to cut the pizza so each slice would be 1/6. how many pizza slices does Sarah have?

261. ## Chemistry.

An X-ray beam with = 151 incident on the surface of a crystal produced a maximum reflection at an angle of = 28.2. Part A Assuming , calculate the separation between layers of atoms in the crystal. Confused on which formula to use to find this answer.

262. ## Math

A satellite which travels around the earth has a power supply that provides power according to the formula: P = 17200/t + 100 where t is the number of days the satellite is aloft. Find the rate at which power is decreasing after 380 days. rate in watts/day

263. ## Life oreintation

What according to the basic conditions of employment act applies with regard to the contraventions

264. ## Math Max min problems

The power P delivered to a load by a current of i amperes through a resistance of 19 ohms, when 110 volts are supplied at one end of the line, is given by the formula P = 110i - 19i2 . Determine the maximum power that can be delivered. maximum power in

List the 5-7 most critical actions you would need to take to convert your idea into a real business opportunity so that you could develop a business plan. Where are the check points during which critical assumptions are explored?

266. ## biology college

which leukocyte is predominant in the blodd smear?explain by comparing it with other leukocytes and red blood cells in the blood smea

267. ## chemistry

How do you know that atoms can be separated without chemical reactions?

268. ## SOC/105

How have talent-based reality shows"changed the development" of new talent int he music industry?

269. ## Social Studies

Argument that Roger Sherman uses to convince people to ratify the constitution?

270. ## writing

Argue for or against which source (traditional library sources versus web-based research sources) would be better to prepare for a debate on changing the state's laws on smoking in public buildings.

271. ## Ap physics

a 64 gram arrow is pulled back 29 cm on a bow, with a maximum force of 54-N. how much work is done on the arrow?

272. ## Math

200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?

274. ## college algebra

Identify where f increases and where f decreases. f(x)=5x+3 I think it's (3,5) increases and (3,-2) decreases?

a dictionary and a calculator cost \$80. If the calculator cost \$20 more than the dictionary, find the cost of the dictionary.

Hi, What are 3 pieces of evidence to back up the argument that there is no way Myrtle Wilson will leave Tom Buchanan? Thanks!

asked by THE GREAT GATSBY By: F. Scott Fitzgerald
277. ## goven

Which one of the following is NOT widely regarded as a political ideal in America?

278. ## physics

90 g of water at 25C mixed with 50g of another substance at 100C result in 45C what is specific heat of that substance

279. ## biology

Gastrulation geometrically separates the future ectoderm, from what?

280. ## Math

The number of 5th grade students who volunteered to help clean up the park this was 5 less than twice as many last year If 39 5th graders volunteered to help clean up the park this year how many volunteered last year

281. ## Chemistry

how would a dilution be performed, starting with a concentration .50 M Cacl2 solution, to obtain 250ml of a .060M solution?

282. ## Math

The expression ax^3+2x^2+cx+1 is 5x^3-3 greater than 3x^3+bx^2+d-7x. Find a, b, c, and d.

283. ## science

Describe the body’s stress response in terms of the actions of the adrenal cortex and medulla. What are the different hormones involved, where are they produced, what type of gland produces them, what type of chemical are they, and how do they contribute

284. ## Social Studies

Which group of Caribbean Islands is closest to the US Cuba and Bahamas?

285. ## math

(1)A grocer kept all the pennies he found left in his store from 1975 to 2000. There were 113,964 pennies in ... pennies he found in a day? (HINT: Don't forget leap years!) Answer: (13) Kind of confused how I got it. Will someone please explain I know that

286. ## math

be found arithmetic series 3a2-a6=-a2 a3+a4=19

287. ## Motion Problems

A satellite which travels around the earth has a power supply that provides power according to the formula: P =(17200)/(t + 100) where t is the number of days the satellite is aloft. Find the rate at which power is decreasing after 380 days. rate in

288. ## geometry

a ladder is placed next to a building to get to the top. the bottom of the ladder is placed 7 feet away from the building at an angle of 56 degrees.how tall is the building?

289. ## Math

The voltage in a circuit is given by the formula V = 16t3 - 79t. Find the values for t for which V is a maximum or a minimum. larger t in seconds = smaller t in seconds = My Answer: V=16t^3-79t V'=48t^2-79 0=48t^2-79 Sq root of 1.645833 = t 1.2829= t

290. ## HELP

what is a form of energy resulting from the temperature difference between a system did it surround

291. ## Intermediate Algebra

Suppose that Maria has 140 coins consisting of pennies, nickels, and dimes. The number of nickels she has is 12 less than twice the number of pennies; the number of dimes she has is 22 less than three times the number of pennies. How many coins of each

292. ## physic

equation F = mv^2/r i don't get why the velocity is squared can anyone explain? this is waves on strings

293. ## physic

equation F = mv^2/r i don't understand why velocity is squared can anyone explain. this is waves on string

294. ## math

If you have a class of 45 students and 15 are boys what is the percentage of boys in the class

63/4-34/5=?

296. ## Math

A number equals four less than three times the number. What is the number?

297. ## Ap physics

a 64 gram arrow is pulled back 29 cm on a bow, with a maximum force of 54-N. how much work is done on the arrow?

Assume that the state of Kansas passes a law requiring all inline skates sold in Kansas to have disc brakes. Assume that there are no federal regulations covering inline skate design. Assume also, that the required disc brakes would make inline skates

299. ## social studies

Detailed rules set down by the federal government are called?

300. ## math

howdo you write 84,508 in word form

301. ## chemistry

how can i sketch a heating curve for benzene (mp=5.5 celius and bp=80.1 celeus?

302. ## College Chemistry

what might be the reason that this is happening: During a simple distillation i have 14ml or 50/50 hexane;toluene mixture in a 25mL round-bottom flask. However, by the time i collected 8ml of distillate there were no liquid left in the flask.

303. ## science

Name two jobs or functions of the roots of a flower?

304. ## math

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please.

305. ## Geometry; Check

Measuring segments: 8. Line AB ; A= -8 B= -6 Answer: Line AB=2 9. Line BD ; B= -6 D=-3 Answer: Line BD= 9 10. Line AD ; A= -8 D= -3 Answer: Line AD= 11 11. Line CE ; C= 1 E= 7 Answer: Line CE=6

306. ## Chemistry

how many moles of sodium oxide are produced when 3.9 moles of of sodium combine with excess oxygen

307. ## Chemistry

how many moles of NO are needed to react with 15.0 moles of NH3

308. ## Math

An atomic particle moves in a linear motion according to the formula s = 19 - 14t2 + 4t3. Determine the particle's velocity at the end of 2.9 seconds. velocity in m/s = My Answer S'= 0-28t+12t^2 S'(2.9) = 0-28(2.9)+12( 2.9)^2 = 0-81.2+100.92 =19.72 Can you

309. ## Math

Find the rate of change of the area of a circle when its radius is 18.0 m and the radius is changing at the rate of 10.1 cm/s? rate in m2/s = My attempt.... dA/ dt = Pie R^2 * dr/dt 10.1cm/s = pie (1800cm) * dr/dt dr/dt = 0.0101/pie 3240 * m^3/m^2 dr/dt =

310. ## calc

find the volume of the solid generated by revolving around the x-axis: y=e^(x-8), y=0, x=0, x=10 So I know you can use the washer method, but the shell method can also be used and it should be better. The issue is I'm not certain how to actually do it. Any

311. ## math

s to the 4th power t to the -6 power expnad this

312. ## Math help

If a student brings 5 pets to school but there are 20 in the class and 35 pets how many did each student bring?

313. ## equation inequality and graph

(9x+5)(x-3)=0

314. ## math

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly, how many shoes must I pick before for sure that there is one matching pair in red or blue?

315. ## english

the strategies we use when reading informational texts are

316. ## math

drawn a rentangle divided into sixths

317. ## math

3___,___,20 (arithmetic)

318. ## English

I have to write a letter of intent to a college stating why I am a good fit for their journalism program. In the rough draft, I wrote this sentence: "I follow current events on a casual, weekly basis." How can I sound a little more dedicated to my approach

319. ## math

How much interest will be paid in 1 year for a loan of at

njni

321. ## Trigonometry

Which of the following is not a solution of the equation tan squared A =3? (1) -pie/3 (2) 2pie/3 (3) 5pie/6 (4) 120 degrees

322. ## college algebra

Find the domain: h(x)=√(x+4) How do I work this problem?

323. ## plant life

What are two jobs or functions of the roots on a flower/plant?

324. ## math

what would 3/4 be closet to 0,1/2 or 1

325. ## chemistry

calculate the # of moles of oxygen in 2 L @ 24 deg C & 750 torr

326. ## MATH

4[23 - (6 + 4)]

327. ## Math

For a track and field athlete who can jump vertically, his distance above the ground is given by the formula s = 3.3t - 4.9t2. What is his initial velocity? velocity in m/s = My Answer S'= 3.3-9.8t S'(0) = 3.3 velocity in m/s = 3.3 Can you please confirm

328. ## maths

find the equation of plane passing through point(0,7,-7) and containing line x+1/-3=y-3/2=z+2/1

329. ## pre-algerbra

\$500 for 1 year at 12% per year

330. ## food preparation

how much kilogram does boiling water gives off

331. ## Math - check answer

Given v = 4t - 9t3, find the acceleration when t = 1 s. acceleration in m/s2 = My Answer V'=4-27t2 V"= -54t V"(1)= -54 acceleration in m/s2 = positive 54 Can you please confirm this is correct???? Thanks

332. ## Maths

P(2q-5) Where. P= -2 q= 3

333. ## pre-calculus

(2^(4+pi))/ 2^(1+pi)

334. ## Confidence Interval

Hi, I need some help with a problem. Here is my example that I am studying. Find a 95% C.I. for the population mean. Same size 36 N(u, 64) sample mean 51.8 51.8+-(4/3)(1.96) Where does the 1.96 come from? 4/3=64/36 so I understand that. Thanks

335. ## math

0/1 is it closest to 0

336. ## Algebra 1- Math

use substitution to solve the system 2x-y=-4 -3x+y=-9

337. ## maths

1) 2a-a/5 = 2/3 2) 3(a+4)+1=a/2 3) 4x-1/3+2(x+6)=1,1/2 4) 2/x-3/4X=2 5) 3n-5n=14 6)3/x+2/x+2=1 7) 2/n+2+3/n-1=5 8) 2/a+1-3/2a+3

63/4-34/5=?

339. ## math

what would 6/7 be closer to 0, 1/2 or 1

340. ## math

would 11/20 be closer to 1 or 1/2

341. ## maths

calculate 4,410,000 in standard form

342. ## plant life

Two jobs or functions of the roots?

343. ## English

choosing a conjunction and the relationship it expresses: ------you buy a rare manuscript, make certain of its authenticity. I used "Before" but it would be "time" or Should I use "If" and it would be "condition" This is so confusing!!!

344. ## ACT/SAT MAP PREP

- t^5 u^5 v^5/ tuv =????????

345. ## MATH

4[23 - (6 + 4)]

346. ## math

12/17 is closet to 0 or 1/2