# Jaime

Popular questions and responses by Jaime
1. ## Physict

This question is similar to some on driver's-license exams: A car moving at 50 km/h skids 15 m with locked brakes. Show that with locked brakes at 150 km/h the car will skid 135 m.

2. ## Chemistry

What is the balanced equation of HClO4(aq)+Sr(OH)2(aq)

3. ## algebra

A 40 inch board is cut into two pieces so that the shorter piece is two-thirds of the length of the longer piece. What are the lengths of the two cut pieces?

4. ## Physics

The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after

5. ## geometry

The diagonal of a rectangle is 25 meters long makes an angle of 36° with one side of the rectangle. Find the area and the perimeter of the parallelogram.

6. ## Physics

Four identical masses of 800kg each are placed at the corners of a square whose side length is 10.0cm. What is the net gravitational force (magnitude and direction) on one of the masses, due to the other three? I think I have to separate the four masses

7. ## Physics

1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s

8. ## social studies - WW1

in 1914, which neutral nations joined allies later? Also, which neutral nations joined central powers later? Why would Germany worry about the alliance between France and Russia? Based on the map, which alliance had a greater advantage in 1914? Explain

9. ## algebra

One sixth of a certain number and three-eighths of the same number total 13. What is the number

10. ## Physics

A pilot maintains a heading due west with an air speed of 240 km/h. After flying for 30 min, he finds himself over a town that he knows is 150 km west and 40 km south of his starting point. a) What is the wind velocity, in magnitude and direction? b) What

11. ## Calculus AB

Let R be the region bounded by the graphs of y=sin(pi x) and y=(x^3)-4x, as shown in the figure above. (a) Find the area of R. (b) The horizontal line y=-2, x=2, x=-1. Write, but do not evaluate, an integral expression for the area.

12. ## physics

Air streams horizontally past a small airplane's wings such that the speed is 70.0m/s over the top surface and 60.0m/s past the bottom surface. If the plane has a wing area of 16.2m^2 on the top and on the bottom, what is the net vertical force that the

13. ## English

I need help identifying the main arguments in the essay as well as the supports used. I believe the thesis is: If children are taught their place in the environment they will look at other species with a sense of fellowship and community. I am also

14. ## Calculus - Newton's Method

Use the Newton's Method to approximate the real root of the equation: f(x)=x-2+cosx=0 a) What is the iterative equation of Newton's method of the given equation? b) Iterate the equation with starting point x1=5 until you get a repetition of the four digits

15. ## math

on her first two math tests, Gracie has an average score of 86. If she got a score of 92 on the first test, what is her score on the second test?

16. ## math

find the volume of a tent having the shape of a rectangular solid of length 13 ft, width 12 ft, and heihght 8 ft topped by a rectangular pyramid of the same width and length with height 5 ft

17. ## Math

A standard deck of cards is made up of four suits with 13 cards in each suit (total of 52 cards). If we randomly sample five cards from a standard poker deck, find the probability that all five cards selected are clubs.

18. ## chem

how do i write a balanced equation for the reaction for Calcium Carbide, CaC2, acetylene gas, C2H2, and calcium hydroxide, Ca(OH)2 are produced

19. ## chem

if you cann get 5candies for 7dollars, then how many candies will 33 dollars get you?

20. ## Biochem

Describe the one dehydration reaction in glycolysis. Include reactants, products, enzyme, and which step it is. I know that it is step 6 and I believe that the reaction uses glyceraldehyde-3-phosphate dehydrogenase to convert glyceraldehyde-3-phosphate

21. ## english

Is time, summer and winter concrete or abstract words?

n n "Suppose ∑ i = 21. and. ∑ i^3 = 441" i=1 i=1 i) Evaluate n Sn = ∑ [4i + (1/3) i^3)] i=1 ii) Determine the value of n." I got n = 6 / n = -7 using the "(n^2(n-1)^2)" formula but I'm not sure if it's right/how to do the first part. I'm very unsure

23. ## Science

How does the mass of the moon and the earth help the moon stay in its orbit around the earth?

24. ## Math - Calculus

Compute the sum: 81 ∑ (2i-1) i=1

25. ## Calculus

The point on the parabola y=x^2 that is closest to the point (2,1/2) is (___,___). The distance between the two points is _______.

26. ## geometry

The diagonal of a rectangle is 25 meters long makes an angle of 36 ° with one of the rectangle. Find the area and the perimeter of the parallelogram. how to find the b to arrive to the area?

27. ## Calculus

Let F(x) = (x+1) / (x^2-16). Use the definition of the derivative to compute f'(x) and give its domain. Show all steps.

28. ## calculus

find the limit without using L'Hopital's Rule Lim(X->-4) (16-x^2 / x+4)

29. ## Math

Cheryl does a 2 mile warm up trail run at one rate for half of her workout. In the same amount of time she runs an additional 3 miles at a rate that is 2 mph faster. Find Cheryl's rate for her 2 mile warm-up run and for the 3 mile portion of her run.

30. ## Math

Which is greater, the greatest whole number with 4 digits or least whole number with 5 digits

31. ## Chemistry

How do can you find the difference between these acids/bases with only one indicator? We have 0.1M NaOH, H2SO4, HCl, AlCl3, and Na2CO3. We know the pH of all the solutions (AlCl3 = 2.9, H2SO4 = 0.7, HCl = 1, Na2CO3 = 11.8, NaOH = 13). We only can use 1

32. ## Science

25 g of Iron (II) Oxide reacts with 25 g of Chloric acid to produce Iron (II) chlorate and water. a. Determine the limiting reactant b. Determine the excess reactant c. Determine the theoretical yield of water d. Determine how much excess reactant is left

33. ## Science

18 g of hydrochloric acid reacts with 15 g of calcium hydroxide produce calcium chloride and water.

34. ## math

Rebecca has a lanyard that is 16.4 inches long. She cuts the lanyard in 3.5 inch pieces. How many whole pieces did she cut?

35. ## alegebra

A cup of coffee milk is 35% coffee syrup with a second cup of coffee milk that is 65% coffee syrup. How many kilograms of each cup of coffee milk must be combined to get 20 kilograms of coffee milk that is 41% coffee syrup

37. ## science

An athlete executing a long jump leaves the ground at a 27.7∘ angle and travels 7.60m.If this speed were increased by just 5.0%, how much longer would the jump be?

38. ## Trig

I need to the steps to get (1-sinx)(1+sinx)=cos^2 x

39. ## physics

A superhero is running toward a skyscraper to stop a villain from getting away. As he is moving, he looks up at the top of the building and his line of sight makes a 33.0° angle with the ground. After having moved 300 m, he looks at the top of the

40. ## Physics

2. Boxcar A, with mass of 1500 kg, is travelling at 25 m/s to the east. Boxcar B has a mass of 2000 kg, and is initially at rest. The box cars collide inelastically and move together after they get stuck. What is their combined velocity?

41. ## Math

taxi company has 31 drivers and now has 43 how to find the percentage increase or decrease.

42. ## calculus area between three curves

find the area of the region for 2y=4sqrt(x) , y=3, and 2y+3x=7

43. ## language arts

What would a flow map look like on the book The Hunger Games?

44. ## Math

(5x+1)/7-(2x-6)/4>_-4

45. ## Math

Y=2x^2 ;(1,2) ,(3,18)

46. ## Math

5x/7+1/7-2x/4-6/4

47. ## Math

5x/7+1/7-2x/4-6/4

48. ## Math

5x+1/7 -2x-6/4

49. ## logic

what is the truth value of the sentence "P v ~ P"

50. ## Physics

A roller-coaster car is moving at 20.0 m/s along a straight horizontal track. What is its speed after climbing a 15.0 m hill?

51. ## Chemistry

Solution A is 2.40M. 20mLs of solution A is transferred to a 250mL volumetric flask and diliuted to volume with water. What is the concentration of the diluted solution?

52. ## math

(4x^3+5x^2-2x-1)-(3x^2+7x-4)

53. ## math

What is (-2)^2 What is (-2)^3

54. ## algebra

*simplifying rational expressions a. 6x+12/4-x b. 3x^2/12-2x

55. ## algebra

A: 7x+7y=-77 B: 20x-5y=-35

56. ## Math

In a right triangle, the middle angle is 12 more than twice the smallest angle. What are the measures of the smallest and middle angles?

57. ## math

jenny's company has two photocopying machines, one of which is older and slower than the other. In fact, the newer machine can put out four-thirds as many copies as the older machine in the same amount of time. If, while running at the same time, together

58. ## math

Roberto and Luisa Barron Lopez each work full time jobs, and Luisa's mother, Carmena, collects a monthly pension of \$628. Between the three of them, their total household income is \$4238 each month. If Luisa earns \$1772, how much does Roberto earn each

59. ## Macro Eco

The belief that monetary policy can be effective in changing aggregate demand and that the money supply is the critical monetary variable is associated with: Answer a Modern Keynesians. b Monetarists. c Supply-side economists. d New classical economists.

60. ## Chemistry

In a coffee cup calorimeter, 50.00 mL of HNO3 (aq) and 50.00 mL of KOH(aq) were mixed. The temperature of the resultant solution increased 6.5 C. What is the Delta H of this reaction?

61. ## trig

What is cosx=1/2?

62. ## Statistics/Chi Square

I have a question to do in which the efficacy of a drug used to treat panic disorder is tested. Patients are given a placebo for one week and then the drug for one week, and the number of panic attacks is measured for each week. The data looks like this:

63. ## Statistics

For a math assignment we need to design a dice roll game with different expected values of winning. The game should require a player to make a bet on the sum of one roll of two dice. If the dice sum to that number, the player wins; otherwise, he loses. We

64. ## Linear Algebra

Let W be the set of all polynomials p(t) in P3 such that p(0)=0. Show that W is a subsapce of P3 and find a basis.

65. ## Math

A cafe holds 300 coffee mugs. 175 of those coffee mugs do not have handles. Estimate the percent of mugs that have handles.

66. ## SCIENCE

Craig sees a glass with ice tea sitting on the table. He notices that there is a great deal of moisture on the outside of the glass and a puddle of water on the table. He asks his family what they think causes the water to form on the outside of the glass.

67. ## Geometryy

given that sec theta = radical13/whole number 3, and csctheta

68. ## Geometry

Use the special triangles to find the exact values of the following: 1) csc45degrees 2)sec30degrees 3)longest side of a 30-60-90 triangle if the side opposite the 60degree angle is 5radical3

12x-6=9x

70. ## math/ measurment

What is the measure of the point angle for a star-shaped polygon with 8 points and a dent angle of 130 degrees? Is there a formula to figure this?

71. ## math/probability

For some reason I can not get my head around probability. Please show me how to work the problem not just the answers. A class has 11 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from

72. ## Math / Probability

In a certian lottery, 4 differnt numbers between 1 and 11 inclusive are drawn. These are the winning numbers. A player selects 4 different numbers between 1 and 11. What is the probability that the player has all winning numbers?

73. ## math

how may polygon arrangments does a semi-regular tessellation have? a) exactly three, b) exactly two or three, c) exactly four, d) exactly two of four

Dale Emerson served as the chief financial officer for Reliant Electric Company, a distributor of electricity serving portions of Montana and North Dakota. Reliant was in the final stages of planning a takeover of Dakota Gasworks, Inc. a natural gas

75. ## His115

What political events and social viewpoints made a federal constitution and government essential?

76. ## English 3

I'm writing an essay comparing and contrasting two of Edgar Allan Poe's poems, "Annabel Lee" and "The Raven". I'll be comparing and contrasting the theme, rhyme scheme, irony and the use of figurative language. I have an idea of what I will be writing but

77. ## math

What is the product of 65.5 ' 0.2?

78. ## critical thinking

I have 4 out of 50 questions left...I cannot figure out the last two rhetorical questions, or the last two fallacy questions. What type of rhetorical device are these? 1. Very little research has been done using properly matched groups with a control

79. ## physics

a solid aluminum ingot weighs 89N in the air. what is its volume? (b) the ingot is suspended from a rope and totally immersed in water. What is the tension in the rope?

80. ## Physics

a solid aluminum ingot weighs 89N in the air. what is its volume? (b) the ingot is suspended from a rope and totally immersed in water. What is the tension in the rope?

81. ## Physics

In a Cavendish balance apparatus suppose that M1= 1.10Kg, M2= 25.0Kg, and the rod connecting the M1 pairs is 30.0cm long. If, in each pair, M1 and M2 are 12.0cm apart center-to-center, find (a) the net force and (b) the net torque (about the rotation axis)

82. ## Statistics

X = 7 and SX2 = 21. A new variable Y is created by multiplying each X by 3. What are SY and SY2 equal to ? I do not understand.

83. ## Chemistry

How do you convert umol/m3 to umol/m2?

84. ## Physics

A 67.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are .800 and .460 respectively. A) what horizontal pushing force is required to just start the crate moving? B) What horizontal pushing force is

85. ## accounting

for each of the following items, give an example of a business transaction that has described effect on the accounting equation: Increase an asset and increase a liability. Increase one asset and decrease another asset. Decrease an asset and decrease

86. ## physics

A woman finds the front windshield of her car covered with ice at -12.6°C. The ice has a thickness of 4.80 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How much heat is required to melt the ice?

87. ## Trignonmetry

Is there a formula to find the correct asymptotes on y=3cos(4x+p/2)-3 p=pie Now I know that answer is -p/8

88. ## Trignonmetry

Please find the exact values: Tan(-3p/4)= Sec(2p/3)= Csc(7p/4)= Cot(11p/6)= p=pie

89. ## math: repost with corrections

p. 942 #5 This is a three-part question: a. the graph y = f(x) in the xy-plane has parametrization x=x, y=f(x), and vector formula r(x) = xi + f(x)j. Use this to show that if f is twice-differentiable, then k(x) = ((absvalue f''(x))/[1+((f'(x))^2]^3/2 b.

90. ## math

Hi This is a three-part question: a. the graph y = f(x) in the xy-plane has parametrization x=x, y=f(x), and vector formula r(x) = xi + f(x)j. Use this to show that if f is twice-differentiable, then ((absvalue f''(x))/[1+((f'(x))^2]^3/2 b. use the formula

91. ## Cal

circle x^2 +y^2 = 1. r(t) = (sint)i +(cost)j at both pi/4 and pi/2 Find velocity & acceleration Thx!

92. ## 9the Grade Honours English

I need info on Aphrodite,Apollo,Atalanta,Perseus,Cerberus and the Minotaur for my honors English class.I have to make a book about them two pages per person.Please help!!! The links in this previous response by SraJMcGin should give you all the information

93. ## Math

The greater of two consecutive even integers is six less than twice the smaller. Find the integers. The greater of two consecutive even integers is six less than twice the smaller. Find the integers How about x + 2 = 2x - 6 almost .. it's x + (x+2)=2x-2

94. ## Math

The greater of two consecutive even integers is six less than twice the smaller. Find the integers. Let the smaller be x. That means that the larger is x+2. From your statement x+2=2x-6 Solve for x. I hope this helps. Thanks for asking.

Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous stare is characteristic of the element? Ive read and researched Quantum physics for over a week now and i still

96. ## Science

A drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of 40cm2. Assume that the oil film has a uniform thickness equal to the diameter of a oil molecule. Calculate the

97. ## pre-algebra

Which is heavier, The Thrust SCC that is 54 ft long and weighs 7 tons or the Spirit of America that is 47 ft long and weighs 4 tons?? The numbers need to be put into an inequality equation! Unless you have not adequately stated your question, no equation

1. ## calculus

Answer should be 0.9054m/min, 6m across means diameter therefore r=3m,

posted on March 27, 2020
2. ## grammar

wierd

posted on March 25, 2020
3. ## georgia state history

it is B

posted on December 12, 2019