# Aaron

Popular questions and responses by Aaron
1. ## Math

Tiffany purchased a \$10,000, 13-week Treasury bill that's paying 2.25%. What is the effective rate on this T-bill? A. 2.26% B. 2.2% C. 2.0% D. 2.7%

2. ## Calc

The rate (in mg carbon/m3/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the function below, where I is the light intensity (measured in thousands of foot-candles). P = (120 I) / (I^2 + I + 1) For what light intensity

3. ## Algebra I

volume of a basketball is 448.9 cubic inches. with the formula V=4/3(pie)radius(cubed) for the volume of the ball, find the radius of the basketball

4. ## Chemistry

-Calcium chloride contains calcium and chloride ions. Write the ground-state electron configuration for the calcium ion. -Write the ground-state electron configuration for the chloride ion.

5. ## Pre Cal 12

A 12cm by 8cm rectangular piece of metal is to be made into an open-top box by cutting a sqaure from corner and folding up the resulting flaps (sides). If the volume of the lidless box is 36 cm what are the integer dimensions of the box?

6. ## algebra 2

Find two negative numbers such that the sum of their squares is 170 and twice the square of the first minus 3 times the square of the second is 95

7. ## Chemistry

In which pair(s) would boiling occur? (Each pair corresponds to one row of the table) a. 760 {mm,Hg} 700 {mm, Hg} b. 480 {torr} 480 {mm, Hg} c. 1.20 {atm} 912 {mm, Hg} d. 1020{mm,Hg} 760 {mm, Hg} e. 740 {torr} 1.00 {atm}

8. ## physics

An ostrich can run at speeds of up to 72 km/h. How long will it take an ostrich to run 1.5 km at this top speed?

9. ## Goverment

Which of the following was one compromise related to the Declaration of Independence that was agreed to by the delegates to the second continental congress? Language condemning the slave trade was removed Language criticizing the English people was

10. ## Math

Jill traveled to Canada and bought a new lamp for \$460 Canadian dollars. In U.S. dollars (to the nearest cent) this is equivalent to

11. ## Math

1) The hypotenuse of an isosceles right triangle is 8 cm longer than either of its legs. Note that an isosceles right triangle is a right triangle whose legs are the same length. Find the exact length of its legs and its hypotenuse. 2) The length of a

12. ## Calculus theory

Determine if the statement is always true, sometimes true, or never true. If y is a function of x, and is also a function of t. then dy/dx = dy/dt explain. i think its sometimes true but i don't know why it is. am i right?, and can you please explain me y

13. ## physics

Grant accelerates a 1kg ball 5.0m/s2 horizontally. The vertical acceleration of the ball is zero. The force of gravity is the only external force acting on the ball other than the forces Grant exerts on it. a-How large is the horizontal force grant exerts

14. ## Programming concepts

Develop a menu-driven program that inputs two numbers and, at the user’s option, finds their sum, difference, product, or quotient. top-down modular approach and pseudocode to design a suitable program to solve it. I am having so much trouble with this I

15. ## physics

You're in an airplane that flies horizontally with speed 860 km/h (240 m/s ) when an engine falls off. Neglecting air resistance, assume it takes 26 s for the engine to hit the ground. Hight of airplane is: H = 3.3 km horizontal distance that the aircraft

16. ## Chemistry

Write the element symbol and charge for this monatomic ion: Consider a monatomic ion that has the electron configuration of [Kr]4d^10 5s^2 and a charge of 2+

17. ## Geometry

There are three points on a line, A, B, and C, so that AB = 12 cm, BC = 13.5 cm. Find the length of the segment AC . Give all possible answers.

18. ## Algebra

What is the equation, in standard form, of a parabola that models the values in the table x (-2,0,4) F(x) (2.5,1.5,-60.5)

19. ## Math

What point maximizes the objective function P = 4x + 3y for the constraints below. What is the maximum value? Constraints: x>=0 y>=0 y=y

20. ## Physics

Figure shows a circular wire loop of radius r carrying current i placed in a perpendicular magnetic field B. Suppose that the radius of cross section of the wire is a. Find the decrease in radius of loop when magnetic field is switched off if Young’s

21. ## English

What is the effect of using the first person in a modest proposal by Jonathan Swift

22. ## math

Hamid will be x years old 7 years from now. How old was he 7 years ago? (Your answer should include x.)

23. ## algebra

The length of a rectangle is 2 1/2 times the width, and the perimeter is 42 feet. What are the dimensions of this rectangle?

24. ## Algebra

1. Find all the real square roots of a. .0064 b. - .0081

25. ## math

The mean of 14 numbers is 50. Removing one of the numbers causes the mean to decrease to 43. What number was removed?

26. ## physics

A cat is chasing a mouse. The mouse runs in a straight line at a speed of 2.2 m/s. If the cat leaps off the floor at a 29° angle and a speed of 4.0 m/s, at what distance behind the mouse should the cat leap in order to land on the poor mouse?

27. ## English

Identify the sentence pattern used below. I e-mailed my English Teacher my essay. My answer is subject verb

28. ## Geometry

Point J is between H and K on line segment HK. use th given information to write an equation in terms of x. Solve the equation. Then find HJ and JK. HJ=(x/4) JK= 3x - 4 KH = 22

29. ## math

the lengths of two legs of a right triangle depend on time. One, whose length is x increase at the rate of 5 feet per second, while the other, of length y, decreases at the rate of 6 feet per second. At what rate is the hypotenuse changing when x=3 and

30. ## Physics

A boy tosses a football upward. If the football rises a vertical distance of 1.1 m and the boy catches it at the same point he released it, what is the velocity of the ball just before he catches it?

31. ## Algebra

Identify the type of conic section that has the equation 9x^2+ 25y^2 =225 and identify its domain and range.

32. ## math

For an 18 month period, the last term is and the series sum is . For a 24 month period, the last term is and the series sum is . For a 30 month period, the last term is and the series sum is .

33. ## Algebra

The equation h = -16t^2 + 32t + 9 gives the height of a ball, h, in feet above the ground, at t seconds after the ball is thrown upward. How many seconds after the ball is thrown will it reach its maximum height? What is its maximum height?

34. ## math

What are the important variables in the problem below? A test is worth 50 points. Multiple-choice questions are worth 1 point, and short-answer questions are worth 3 points. If the test has 20 questions, how many multiple-choice questions are there?

35. ## chemistry HELP!!

Reaction Rate = -(1/2) [d(H2O2)/dt] = [d(O2)/ dt] Using 25 mL of a 0.2 M hydrogen peroxide solution, the following results are obtained from the equation above: 8.62 mL of gas is collected in 120 seconds. (Assume 760 Torr = 1 atm) Room temperature is 25

36. ## Chemistry

The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium

37. ## Chemistry

The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium

38. ## science

Use of which of the following does not contribute carbon dioxide to the environment? refrigerator charcoal grill computer bicycle

39. ## science

What is the coeffitient of friction for a playground slide and a pair of sports pants?

40. ## Physics

A skydiver deploys his parachute when he is 950m directly above his desired landing spot. He then falls through the air at a steady 5.0 m/s . There is a breeze blowing to the west at 1.1 m/s. At what angle with respect to vertical does he fall? By what

41. ## physics

A violin string vibrates at 440 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way down from the end?

42. ## Calculus

Find the volume of the solid by subtracting two volumes, the solid enclosed by the parabolic cylinders y = 1 - x 2, y = x 2 - 1 and the planes x + y + z = 2, 6x + y - z + 16 = 0.

43. ## Calculus

Let f be the function given by f(t) = 2ðt + sin(2ðt) a) Find the value of t in the open interval (0,20 for which the line tangent at (t, f(t)) is parallel to the line through (0,0) and (2,4ð) b) Suppose the given function describes the position of a

44. ## math

why do dragons sleep during the day

45. ## Physics

A block and tackle with a velocity ratio of 7 is used to raise a mass of 50kg through a vertical distance of 800mm at a steady rate. If the effort is equal to 110N. Determine (a) The distance moved by the effort. (b) The workdone by the effort in lifting

46. ## math

In a certain neighbourhood the ratio of cats to dogs to squirrels to skunks is 5:4:7:1. If there are 119 of these animals in all, how many are dogs?

47. ## math

Kimberley's car can go 290 km on 21 L of gas. how far will her car gon on 31 L of gas?

48. ## Physics

a 57.0 kg person on a rollercoaster moving through the bottom of a curved track of radius 42.7 m feels a normal force of 995 N how fast is the car moving

49. ## Physics

A ball is thrown vertically with a velocity V0 from a building with height h, a second ball is dropped from the same building a second later, calculate the maximum inicial velocity V0 needed so that both balls get to the ground at the same time and so that

50. ## English

Include a colon and an explanation. The town reminded me of my childhood vacations: both were on the beach. Is this right?

51. ## Physics

A weightlifter raises a barbell of mass 150 kg from the floor to over his head 2.5 meters in 3 seconds. What is his average power input?

52. ## algebra

describe the transformation done by y=1/x to get y = 1/4x -12

53. ## Algebra

1. Find all the real square roots of a. .0064 b. - .0081

54. ## Algebra

Rewrite 32^3/5 as a radical expression and then simplify.

55. ## Introduction to small engines

The distance the piston must travel from TDC to BDC is referred to as the of the engine

56. ## chemistry

Create balanced equation, given the two compounds in aqueous solution may react with one another. State whether or not a chemical reaction occurs. Make sure to include the state of each reactant and product. If a precipitation reaction occurs, provide the

57. ## Algebra

the foci of the ellipse given by the equation 100x2 + 25y2 = 2500?

58. ## Chemistry

One isotope of a metallic element has mass number 10 and has 7 neutrons in the nucleus. It forms an atomic ion having 2 electrons. Enter the symbol for this ion

59. ## physics

Michael, whose mass is 80 kg, runs at a speed of 3 m/s. What is his kinetic energy?

60. ## Math

What is the difference between 20 hundreds and 3 x 10 to the 2nd power

61. ## Math

How much more is 245,612 than the combined numbers of 18,912 and 45,608

62. ## Math

I am a number between 1000000 and 2000000. My ones digit is the sum of my tens and hundreds digits and is also the sum of my millions and ten thousands digits.my hundred thousands, thousands, and ones digits are the same.the sum of my digits is 45.what

63. ## Math

Can someone help me complete this table? a - 5, 6, 7, 8, 9 b - 3.8, 4.6, 5.4, _, _ So, do you add 0.8 each time? I think the next two numbers are 6.2 and 7.0.

64. ## Chemistry

Now, my problem with this question is the break-down, I don't know where to start. Calculate the volume of H (g), measured at 21.9°C and 769 Torr required to react with 36.3 L CO(g), also measured at 21.9°C and 769 Torr. Assume the gases react as

65. ## algebra 2

3x+y+z=14 -x+2y-3z=-9 5x-y+5z=30 linear equations solve by elimination

66. ## science

Describe how you would find the mass of 250mL of water

67. ## Chemistry

A 76.00-pound flask of mercury costs \$132.00. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values.

68. ## Algebra 2

Let f(x)-5x+3 and g(x)=6x-2 find the f x g and it's domain

69. ## algebra

Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story in y=mx+b form

70. ## algebra

Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story.

71. ## science

A salamander is a keystone species in a forest ecosystem with high biodiversity. This species migrates from woodland areas to a local stream to reproduce. If a road is built that cuts off the woodland areas from the stream, what effect will this have on

72. ## science

What determines the carrying capacity of a particular population by an ecosystem? A.keystone species B.pioneer species C.limiting factors D.renewable resources

73. ## school

Two disks are spinning freely about axes that run through their respective centres (see figure below). The larger disk (R1 = 1.42 m) has a moment of inertia of 1180 kg · m2 and an angular speed of 4.0 rad/s. The smaller disk (R2 = 0.60 m) has a moment of

74. ## physics

The propeller blades of an airplane are 2.7 m long. The plane is getting ready for takeoff, and the propeller starts turning from rest at a constant angular acceleration. The propeller blades go through two revolutions between the fifth and the ninth

75. ## Science

Is a cell wall on a plant or animal cell or on both?

76. ## Alebra

need to solve a word problem using linear equation in slope form. Ben walks 3 miles per hour, and runs at 6 miles per hour. Runs and walks a total of distance of 210 miles per week. Is this correct 210 = 3/6m +b - equation to show relation of hours run to

77. ## Algebra

literal equation: solve for x ax=bx-c

78. ## keith

drop a ball from a height of 1.5 meters. Calculate its seed when it hits the floor

79. ## physics

You need to fill a football with air to play with it. You know that your pump expels air at 10 ft/s. The needle of your pump has a radius of 5 micrometers. What is the volume flow rate of the air being pumped into the football?

80. ## Chemistry

A 0.750 g sample of an unknown solid is dissolved in 100 mL of water and acidfied with 25 mL of 3 M H2SO4 then titrated with a 0.0200 M KMnO4 solution. If the unknown solid requires 12.5 mL of the KMnO4 solution to reach the endpoint, what is the % sodium

81. ## PHYSICS

A wave on a string is described by the relation y = A sin(30t - 0.041x), where t is measured in seconds and x in meters, with A = 0.16 m. (a)Find the frequency of the wave. ____Hz (b)Find the wavelength of the wave. ___m (c)Find the speed of the wave.

82. ## physics

A person holds a 1.56 baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure(Figure 1) . The biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force on the forearm. Consider the forearm and hand to

83. ## Math

Solve the following for the indicated variable. V = 1/3Bh for B (volume of a pyramid)

84. ## math

Flying with no wind, a plane makes a 600 km trip in 3h. On the return trip, the plane flies with a 50 km/h tailwind. What is the total trip time?

85. ## math

Erica's average rate going uphill was 80% of her average rate going downhill over the same route, and it took Erica 10 minutes longer to go up the hill than to go down the hill. What was the total number of minutes Erica spent going uphill and downhill?

86. ## Chemistry

3.30 mL of vinegar needs 40.0 mL of 0.150M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10 qt sample of this vinegar?

87. ## chemistry

Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3NO2(g) + H2O(`) −! 2HNO3(`) + NO(g) If 745 L of NO2 gas react with water, what volume of NO gas will be produced? As- sume the gases are measured under the same

88. ## Algebra

What is 18 over 52 as a decimal rounded to the nearest thousandth

89. ## physics

A 2.9-m nylon fishing line used to hold up a 5.2 kg fish has a diameter of 1.4 mm How much is the line elongated?

90. ## physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water.

91. ## Accounting

Starfax, Inc., manufactures a small part that is widely used in various electronic products such as home computers. Operating results for the fi rst three years of activity were as follows (absorption costing basis): In the latter part of Year 2, a

92. ## physics

Compute the order of magnitude of the mass of (a) a bathtub filled with water, and (b) a bathtub filled with pennies. In your solution list the quantities you estimate and the value you estimate for each.

93. ## maths

you want to make a flower bed in your garden. What shape would it be to make the biggest possible peramiter for an area of 214cmsq

94. ## physics

A length of organ pipe is closed at one end. If the speed of sound is 344 m/s, what length of pipe is needed to obtain a fundamental frequency of 74 Hz? Answer in units of m.

95. ## Physics

If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.

96. ## chemistry

Calculate the molar heat of neutralization in kJ/mol of the reaction between HA and BOH given the following information: The temperature change equals 7C, 50 mL of 1 M concentration of Acid 50 mL of 1 M concentration of Base Heat capacity of the

97. ## physics

Two 72.0 kg hockey players skating at 5.25 m/s collide and stick together. If the angle between their initial directions was 125 degrees, what is their speed after the collision?

98. ## Math - Trigonometry

Math - Find the amplitude, period, phase shift - y=cosPi/2 (x+1/3)

99. ## Calc

An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 3 km east of the refinery. The cost of laying pipe is \$300,000 per