Kayla

Newest questions and responses by Kayla
1. algebra

Can someone please help me with this problem. I need to simplify this complex rational expression and find the restrictions for X 4+1/x divided by 16-1/xsquared Thank you

2. History

What was one of the first Soviet controlled countries to reestablish their freedom and independence after Détente? A.) Russia B.) Romania C.) Hungary D.) France I think it’s C but I could be wrong pls help

3. Math

Flavia has a bag with 8 white balls, 9 red balls, 14 green balls, and 10 orange balls. If she chooses a ball from the bag without looking, which color ball will Falvia be least likely to choose? A. white B. Red C. Green D. Orange

4. Math

There are 4 jacks in a standard deck of 52 playing cards. If Patricia selects a card at random, what is the probability that it will be a jack?

5. Precalculus

Hello, An Aircraft carrier can travel 450km in the same time a container ship travels 300km. If the aircraft carrier was traveling 5km/h faster what was the speed of the container ship? I don't need help answering the actual question, I have a pretty

6. Precalculus

Hello, So I'm determining the non permissible values of the variables & for this one: (x^2+7x+12)/(x^2-x-12) I know the restrictions are 4

7. Science

How is the earth's magnetic field created?

8. math

the equation y=-16t2+120 can be used to represent the fruits height above the ground, where t represent time ,in seconds, after she threw the apple

9. Precalculus 11

The sum of the first number & the square of a second number is 18. The difference between the square of the second number and twice the first number is 12. Write a system of equations to represent this situation. y=-x^2+18 y=.5x^-6 Solve the system to

10. biology

Need help checking answer, biology question. Please Help! Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles. Explain the energy

11. Precalculus 11

I have kind of a general question... I'm working on a unit about solving systems of equations & I just feel like I've lost the general concept a little bit. When something says, "use your graphing calculator to solve the following systems of equations."

12. Precalculus

Hello, I'm a little confused & not sure where I went wrong: Solve the following systems of equations algebraically using the quadratic formula. Round answer to 2 decimal places. y=-x^2+2x+9 y=-5x^2+10x+12 My work: -x^2+2x+9=-5x+10x+12 Move everything from

13. Precalculus

Hello, I just want to make sure I'm doing this correctly: Solve the following systems of equations algebraically. y=x^2-1 2x-y+2=0 My work: -x^2+2x+3=0 Divide everything by -1 x^2-2x-3=0 (x-3)(x+1)=0 x=3, x=-1 Thank you!! :)

14. Chemistry

A patient receves 3.0 mL of a solution containing technetium-99m for a breast image. If the activity of the technetium-99m is 9.5mCi/mL what is the dose received by the patient?

15. math

In the past, the value of houses a local realtor has sold is normally distributed with a mean of \$253,000 with a standard deviation of \$65,000. How much does a house have to sell for so that the house is in the bottome 20% of lowest selling houses for the

16. Financial literacy

In traditional economy, economic decisions are based on ______ and ______. I’ve gone through my at least 4 times and I can’t find anything that would answer this. Please help.

17. Precalculus 11

Determine the value of the discriminant and then state the nature of the roots. x^2-8x-9=0 root 28 is the discriminant 2 different roots is the nature of the roots Is that correct? Thanks a ton! :)

18. american History

How did trade with Asia impact Italy? Italians sought new reasons to extend the Crusades as they fulfilled their need for Asian goods. The Byzantine Empire secured its position by becoming a conduit of trade between Italy and the Middle East. The increased

19. American History

What significance did the domination of southern Spain by the Umayyad Caliphate have on European culture? Europeans became dependent on goods from the Middle East and Asia. Spaniards migrated to Africa to escape the invasion of the Umayyad Caliphate. Spain

20. american history

What was the significance of the closing of the Silk Road? It gave Europeans the incentive to establish new overland trails into territories in Asia. It inspired Europeans to discover the hidden secret of creating their own silk textiles. It encouraged

21. American History

What disadvantages did Native Americans experience in their trading with Europeans? Native Americans became reliant on European technology. Native Americans could not trade effectively because they lacked economic leaders. Native Americans traded for items

22. biology

Some antifungal medications can damage the patient’s own tissues. Why doesn’t this problem occur with antibiotics? Thanks!

Glycerol (a non-electrolyte that can be used as antifreeze and coolant in a car radiator) has a density of 1.261 g/mL and a molecular weight of 92 g/mol. If 111 mL of glycerol are mixed with 5.1 kg of water, by how much would the boiling point of the

24. Precalculus 11

Hello, An airplane makes a 990 km flight with a tailwind & returns, flying into the same wind. The total flying time is 3 hrs 20 mins & the airplanes speed in still air is 600 km/hr what is the the speed of the wind? I'm as far as

25. Vet Tech

A 20 lb puppy needs metoclopramide for vomiting. The dose is 2 mg/kg. The drug concentration is 5 mg/mL. How many mL will you draw up?

26. english

What is the object of the preposition in sentence? He will walk alone from his office. 1)alone 2)children 3)under 4)the I say (1) alone

27. Chemistry

If the specific heat capacity of ice is 2.10 J/(g.°C), how much heat is required to heat 530 g of ice from -45.0°C to -15.0°C? 1.) 33.400 kj 2.) 32595 J 3.) 33.4 kj 4.) 33000 J I was out sick when we learned this please help

28. World History

Which British colony became very valuable when gold and diamonds were discovered there? 1.) Cape Colony 2.) Suez 3.) Canada 4.) India I think it’s Suez. Am I correct?

29. World History

What was the impact of the Napoleonic Code? 1.) it became the set of civil laws adopted throughout Europe and other parts of the world. 2.) it established a way to use sociology to categorize European citizens for taxation 3.) It was the central method of

30. world history

What impact did the Concert of Europe have on Europe? 1.) The Concert of Europe sought to establish a unified trading partnership to promote unity and eliminate future wars. 2.) The Concert of Europe sought to eradicate monarchies in favor of democratic

31. Chemistry

Which of these most accurately describes the motion of gas particles? 1.) particles making up gases are mostly fixed in their locations and have vibrational motion. 2.) particles making up gases have few intermolecular interactions and are free to move.

32. Chemistry

Molecular crystals consist of molecules held together by intermolecular forces. Ice is a good example. In ice, water molecules are held together by ______, and by London dispersion forces. Intermolecular forces are _______ than ionic or covalent bonds.

33. history

The siege of the Alamo mission can be seen as a manifestation of which aspect of manifest destiny? • The need for a refuge for persecuted groups • The need to expand democracy • The need for new trade routes and markets*** • The need for new

34. history

The letter written by William Travis referencing the siege of the Alamo is an example of _? • a tertiary source • a secondary source • a primary source**** • an unbiased source

35. chemistry

Which one of the following pairs has only London dispersion forces as the intermolecular force between them? 1.) H2O; HF 2.)He; He 3.) HCl; HCl 4.) Ne; HCl please help I am so lost

36. chemistry

What is the difference between dipole-dipole interactions and dipole-induced dipole interactions? 1.) dipole-dipole interactions involve two non polar molecules. Dipole induced dipole interactions involve one polar molecule with a permanent dipole and one

37. world history

What was the difference between the profits of Great Britain and India? please help with this question I've looked it up and done my research and I'm really struggling.

38. chemistry

When two metal atoms are close to each other, their __________ orbitals __________ and they can share __________. help me fill in the blanks please

39. ALGEBRA 2

The Rattlesnakes football team plays a different opponent every week. So far this season, the Rattlesnakes have won 3 games out of 6. Which equation models the number of consecutive games the Rattlesnakes must win in order to increase their winning

40. Precalculus 11

The sum of the squares of three consecutive integers is 149. Find the integers. I got 6,7,8 or -6,-7,-8 There's no reason why it would specifically be one or the other right? It could be either? Thanks!!

41. algebra 2

what is the description of the end behavior of f(x)=x^3+5x^2−14x? Please help I have a hard time grasping this

42. math

Claudia wants to test if the binomial 3x−6 is a factor of P(x)=3x^3−9x^2+9x−6. First, she evaluates P(_[blank 1]_). After simplifying correctly, she is left with a remainder of _[blank 2]_. Based on the remainder, she correctly concludes that 3x−6

43. math

Consider the graph of f(x) as shown. Graph of f of x. The curve approaches infinity as x approaches negative infinity, then passes through the point (-3.45, 0), turns at about (-3.05, -2.03), passes through (-2.51, 0), then turns again at (-1.39, 4.62),

44. algebra 2

Suppose the polynomial f(x) has the following roots: 1+6sqrt2, 2−sqrt6, and 6+sqrt2. If f(x) has only rational coefficients, the Irrational Root Theorem indicates that f(x) has at least three more roots. What are the three additional roots that f(x) must

45. math

Given a polynomial equation p(x)=0, which expressions could be a pair of irrational roots of the equation? please help I don't know how to solve this

46. algebra 2

What is the number of distinct possible rational roots of p(x)=2x2+7x+6? I need help on how to solve this

47. history

Which option accurately describes the impact of Confucianism on Asian cultures? Qin Shi Huang declared Confucianism as the Chinese Empire’s official religion, resulting in a civil war. Confucianism established a governmental model, defined leadership

48. World History

Which option accurately describes the relationship between the Catholic Church and public literacy prior to the humanist movement? Prior to the humanist movement, the Catholic Church was predominately illiterate except for a few high-ranking bishops. Prior

49. world history

Which best describes the theory Jean-Jacques Rousseau outlined in The Social Contract? Rousseau theorized that people are born inherently greedy and a large powerful government is needed to counteract such greed to maintain social order. Rousseau theorized

50. history

Which most accurately describes endeavors of explorer John Cabot? John Cabot led successful expeditions to Newfoundland, claiming the land for England. John Cabot was the first European explorer to discover the Mississippi River. John Cabot led successful

51. history

Which most accurately describes events in the life of explorer Sir Walter Raleigh? Raleigh led major expeditions to America, including the ill-fated Roanoke Colony. Raleigh is best known for establishing the colony of New Mexico for Spain. Raleigh was the

52. wold history

Which trade route refers to the extensive trade and sharing of plants, animals, culture, and ideas between the Americas, Africa, and Europe following Christopher Columbus’s discovery of the Americas? Trans-Saharan Trade Columbian Exchange Incense Route

53. world history

Which accurately describes Portugal’s motivation for funding explorations along the coast of Africa? to navigate around Africa to Asia and find the kingdom of Prester John to navigate around Africa and find the kingdom of Japan to navigate around Africa

54. history

Why did Pope Pius V excommunicate Queen Elizabeth I in 1570? The pope declared her a heretic because she invaded France and Spain, allies of the Catholic Church. The pope declared her a heretic because she sided with Charles V to form the Schmalkaldic

55. World history

How did the Crusades affect Jewish societies? (Select all that apply) A.) crusaders massacre Jews in France when Pope Eugenius III called for the second Crusade, led by French and German Kings. B.) jsu aligned with the Byzantine empire and helped Eastern

56. Chemistry

The adult blue whale has a lung capacity of 5.0 x 10^3L. Calculate the mass of air (assume an average molar mass of 28.98g/mol) contained in an adult blue whales lungs at 0.0 Celsius and 1.00atm, assuming the air behaves ideally. I have the answer but

57. Math

Show me a picture grid of 1.8 divided by 0.6

58. History

“The liberty of the press is essential to the security of freedom in a state: it ought not, to be restrained in his common wealth.” - The above quote runs counter to a set of legislative acts during the Adams admiration that were inspired by _. • the

60. Geometry

three security cameras were mounted at the corners of a triangular parking lot. camera 1 was 110 ft. from camera 2, which was 137 ft from camera 3. cameras 1 and 3 were 158 ft. apart. which camera had to cover the greatest angle? Camera 1 None Camera 3

61. Geometry

1. Find the length of a diagonal of a rectangle ABCD with vertices, A (-3,1), B(-1,3), C(3,-1) and D (1,-3). A) 5.7 B) 6.3 C) 3.2 * D) 4.5

62. physics

A circular disk of mass 0.2kg and radius 33cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7kg and the same radius, rotating freely at 4.4rad/s. a) Find the new angular velocity of the combination b) The change in

63. physics

A car moving with a constant speed of 83 km/h enters a circular, flat curve with a radius of curvature of 0.40 km. If the friction between the road and the car’s tires can support a centripetal acceleration of 1.25 m/s2, without slipping, does the car

64. Precalculus 11

Determine if the given value is a solution for each quadratic. Answer yes or no. 2x^2-3x(root 2)+2=0 I know the answer is yes but I don't know how to get to that answer. Thanks a ton! :) Kayla

65. Math

Darla purchased a new car during a special sales promotion by the manufacturer. She secured a loan from the manufacturer in the amount of \$24,000 at a rate of 4.2%/year compounded monthly. Her bank is now charging 6.8%/year compounded monthly for new car

66. physics

A little boy jumps onto a small merry-go-round(radius 2.00m) in a park that rotates for 2.30s through an arc length of 2.55 before coming to rest. If he landed( and stayed at a distance of 1.75 , frp, tje cemtral axis of rotation of the merry-go-round,

67. physics

Help please? Having trouble with this. A race car makes two and half laps around a circular track in 3.0 min. What is the car's average angular speed?

68. Physics

In moving a 35kg desk from one side of a room to another, a man finds that a horizontal force of 275N is necessary to set the desk in motion, and a force of 195N is necessary to keep it in motion at a constant speed. What are the coefficients of both

69. Physics

In moving a 35kg desk from one side of a room to another, a man finds that a horizontal force of 275N is necessary to set the desk in motion, and a force of 195N is necessary to keep it in motion at a constant speed. What are the coefficients of both

70. geometry

Name the property of equality or congruence that justifies going from the first statement to the second statement. StartFraction x Over 2 EndFraction equals 3x2=3 x equals 6x=6 symmetric property of congruencesymmetric property of congruence distributive

71. Pre algebra

What are the actual dimensions of the sofa in inches? 90 x 45 90 x 36 75 x 25 80 x 30 I think its the second choice

72. physics

A piece of uniform sheet metal measures 25 cm by 25 cm. If a circular piece with a radius of 5.0 cm is cut from the center of the sheet, where is the sheet’s center of mass now?

73. Math

How can u use regrouping to multiply

74. English

3. How does Malik relate with his mother in “The Next Adventure”? How do their interactions change over the course of the story? Use specific details and evidence from the text to support your response. Your response should be at least two complete

75. math

A single fair is tossed. Find the probability of obtaining a number different than 9

76. geometry

find the values of x , y , and z this diagram is not to scale 36 , 63 , 13 and the other three x ,y and z what are the values of them?

77. Geometry

6. Which of the following facts, if true, would allow you to prove that line l and m are parallel? A.angle m + angle 4= 180 B. angle 1 = angle 8 ** C. angle 6+angle 3 = 180 D. angle 7= angle 6

78. math

seven and two thirds minus six and a half

79. Math

Jody deposited \$65 into her savings account. The next day, she withdrew \$24. How much of her deposit remains in the account.

80. Physics

A 0.20-kg billiard ball travelling at a speed of 15 m/s? strikes the side rail of a pool table at an angle of 60°. If the ball rebounds at the same speed and angle, what is the magnitude of its change in momentum? I need help!

81. Physics

Water is lifted out of a well 30.0m deep by a motor rated at 1.00hp. Assuming 90% efficiency, how many kilograms of water can be lifted in 1 min? Answer is 137kg but can not figure it out.

82. Physics

Six identical books, 4.0 cm thick and each with a mass of 0.8kg, lie individually on a flat table.How much work would be needed to stack the books one top of the other?

83. science

Special telescopes, such as the Chandra x-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-rays give off a spectrum of light that tell astronomers what elements make up

84. Physics! Help!

Vector A, a wind velocity vector, has a magnitude of 20 miles per hour and is blowing toward the North. A second wind velocity vector, Vector B, has a magnitude of 50 miles per hour and is blowing toward the Southeast. A third wind velocity vector, Vector

85. Physics!

A force acts on a 1.5-kg, mass, giving it an acceleration of 3.0m/s^2. (A) If the same force acts on a 2.5-kg mass, what acceleration would be produced? (B) what is the magnitude of the force?

86. Physics

A force acts on a 1.5-kg, mass, giving it an acceleration of 3.0m/s^2. (A) If the same force acts on a 2.5-kg mass, what acceleration would be produced? (B) what is the magnitude of the force?

87. Emergent computer tech.

1. What file is being called by this IMG tag? (1 point) answer= SRC 2. What type of link is used to call this file? (1 point) answer=need help with this one 3. If the user loads this graphic in a text-only browser how will the browser describe it? (1

88. Foundations of Math 1

Solve the equation. 78=-2(m+3)+m A –28 B –42 C –72 D –84

89. biology

In a pre-lab for nutrient food testing , I was assigned to answer these questions, but I have no idea what they are talking about. And no, we have not discusses the answers in class. Here are the questions: Answer the following questions: 1. What is a

90. english 2 ( 5 questions)

6 Read the following sentences from "When Greek Meets Greek." Fraser scratch his head. "I know of a landlord up the road who vow that ain't ever taking anybody who come from the West Indies. But he don't mind taking Indians. He wouldn't know the difference

91. english 2

Can someone please please help me!!!! 1.Read the following sentences from "Lifeguard Rules!" “That’s it, Ira and Michael,” Francesca had said. "You guys don’t get a third warning. Go spend fifteen minutes out of the water. I’ll inform you when

92. physics

An apple falls from a tree and hits the ground 9.63m below. With what speed will it hit the ground? The acceleration of gravity is 9.8 meters per second squared.

94. Geometry

PB is a line segment on a number line. It has endpoints at -2 and 12. What is the coordinate of its midpoint?

95. Math

Solve the following system using elimination (aka linear combination) attach an extra sheet, if needed. { 3x+2y+4z=11 { 2x-y+3z=4 { 5x-3y+5z=-1

96. 9th Grade Foundations of Math 1

7/3y - 8 = 111 Equations.

97. early chhildhood

"Shaping" involves A. Removing reinforcers to diminish a behavior** B. rewarding each step toward a goal to teach a new skill C. using negative reinforcement to increase a behavior d. Using positive reinforcement to increase a behavior

98. early childhood

One similarity between the developmental theories of Piaget and Vygotsky is that they are both A. constructivist theories of learning throught interaction with the environment B. objectivist theories of development throught the resolution of crisis C.