# Jonathan

Popular questions and responses by Jonathan
1. ## life orientation

Define risk behavior and explain why it is important for teenagers to investigate and be knowledgeable about it.

2. ## mathematics

two observer p and r 15 meters apart observes a plane in the same vertical plane and from the same side of the kite,the angles of elevatio of the plane from p and r are 30 60 respectively.find the height of the plane to the nearest meter.

A golfer, driving a golf ball off the tee, gives the ball a velocity of +40 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 4.05E-3s. (a) What is the change in momentum of the ball? (b) Determine the average

4. ## trig

Two ships, one sailing at 30 km/hr and the other at 45 km/hr, left port at the same time. Three hours later they were 120 km apart. If you had to find the angle between their courses an equation that could be used to solve this problem is:

5. ## Physics

a stone is projected at an angle of 60 degree and an initial velocity of 20 m/s .determine the time of flight

6. ## Geometry

10. Which of the following quadrilaterals always have diagonals that are congruent. Circle all that apply Parallelograms Rectangles Rhombi Squares Isosceles trapezoids 19. Given square ABCD: if the measure of angle ACB = (1x - 32) degrees, find the value

7. ## Geometry

Point $G$ is the midpoint of median $\overline{XM}$ of $\triangle XYZ$. Point $H$ is the midpoint of $\overline{XY}$, and point $T$ is the intersection of $\overline{HM}$ and $\overline{YG}$. Find the area of $\triangle MTG$ if $[XYZ] =150$.

8. ## Physics

Two perpendicular forces have a resultant of 13N.if one of the forces is 5N, the other force is?

9. ## Calculus

The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in feet. What is the average velocity of the particle for 1 ≤ t ≤ e? a)1 b)e c)e-1 d)1/(e-1)

10. ## Organic Chemistry

What is the white solid that quickly forms when the methyl salicylate is added to the sodium hydroxide solution? I know that it is this equation but I wanted to know what is the name of the white solid: HOC6H4COOCH3 + NaOH „³ HOC6H4COO- Na+ + CH3OH

11. ## Geometry

A photographer enlarged a picture. If the width of the image is 5 inches and the width of the pre-image was x, what is the scale factor for the dilation in terms of x?

12. ## Maths

if COS A=3/5 and Sin B=7/25, when A us acute and B is obtuse, find without using tables. the value of COS(A+B)

13. ## Math

A spinner is divided into 8 equal sections. Each section is numbered 1-8. Find each probability for one spin.

14. ## Science

1. Aquaculture is the practice of farming sea organisms as a renewable food source. A. True B. False. 2. Selectively cutting down trees on an area of land can be best described as A. cutting down certain trees while leaving other trees standing B. cutting

15. ## Math

In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

16. ## Calculus

The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 60t − 1.5t^2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? a)60

17. ## lively

Suppose that four times the square of a number equals 20 times that number. Whatis the number? It'll take you 45 seconds if you just plug in a few numbers Again -- putting the subject in the subject line helps. =) 4 n^2 = 20n zero is one solution. Solve

18. ## Chemistry

What is the balanced equation between mannitol and boric acid

19. ## maths

express log9 in terms of log3 x and log3 y and solve for x and y simultaneously

20. ## English Check

The advice was meant for ____ A)you and i B)she and i C) you and me Hello i need help. My original answer was A)you and I. But then I started reading a book on English grammar and it says it should be C)she and I since they are subject pronouns.

21. ## Help with science

1. Aquaculture is the practice of farming sea organisms as a renewable food source. A. True B. False. 2. Selectively cutting down trees on an area of land can be best described as A. cutting down certain trees while leaving other trees standing B. cutting

22. ## US History

Why Is Alfred T Mahan Important To Us Today?

23. ## Statistics

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Student's grades - A, B, or C, on a test.

36. ## Algebra

In a rectangular room 10 feet wide, 40 feet long and 15 feet high there are four windows, each 30 inches by 48 inches. What is the ratio of window surface to floor area in this room?

37. ## math

The scale of two similar triangles is 1:4. The perimeter of the smaller triangle is 60 centimeters. What is the perimeter of the larger triangle?

38. ## Biology

Based on current evidence, what process most accurately describes how chloroplasts and mitochondria evolved? a.photophosphorylation b.endosymbiosis c.photosynthesis d.cellular respiration I personally think the answer is d.

39. ## social studies

Which of these were holy Hindu scriptures written by gurus to help connect people to heavenly forces?

40. ## Using Geometry in Probability

Allen and Bethany each arrive at a party at a random time between 1:00 and 2:00. Each stays for 15 minutes, then leaves. What is the probability that Allen and Bethany see each other at the party?

41. ## Health

How might a forest fire affect the health of people in nearby communities? (Select all that apply.) a. increased risks of asthma attacks b. increased risks of viral infections c. increased risks of bacterial infections d. increased risks of heart problems

42. ## Health

Why are routine screenings for cervical cancer important? (Select all that apply.) a. Cervical cancer screenings guarantee a longer life. b. Cervical cancer screenings can identify precancerous cells. c. They can identify cancer cells before symptoms

43. ## math

Find the area of the rhombus. Round to the nearest tenth if necessary. M(0,4), N(3,0), P(0,-3), Q(-3,0)

44. ## math

Given the coordinates of the vertices of a quadrilateral, determine whether it is a square, a rectangle or a parallelogram. Then find the area of the quadrilateral. E(–7, –1), F(2, –1), G(–4, –8), H(5, –8)

45. ## Biology

What's the largest and most successful kingdom in the animal kingdom?

A history class is comprised of 6 female and 9 male students. If the instructor of the class randomly chooses 5 students from the class for an oral exam, what is the probability that 2 female students and 3 male students will be selected? Round your answer

5x+3yi=5-6i?

48. ## chemistry

what volume of glycerine C3H8O3, with a density of 1.26 g/mL should be taken to obtain 2.50 ml of glycerine?

49. ## maths

4x+16y:32 and 4x+y:17

50. ## physics

A capacitor,consisting of two metal plates each of area 50cm2 and space 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored..(2)the electric flux density and the potential gradient..

51. ## Calculus

Givenƒ(x) = ex, verify that lim h->0 (e^x+h - e^h)/h + e^x and explain how this illustrates that ƒ′(x) = ln e • ƒ(x) = ƒ(x)

52. ## chemistry

Determine the limiting reactant for this reaction if 3.027 grams of Aluminum are reacted with 60.00 mL of a solution that is 6 M KOH. Determine the amount of KAl(SO4)2•12 H2O that can be produced from this reaction. Molar mass Alum = 474 g/mol 2 Al (s) +

53. ## Probability

Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p, where 0

54. ## math

Michaela makes original stationary to give away as gifts. She likes to put a small bow in the corner of each card. She purchased a piece of ribbon that was 3 1/4 ft long. She can make each bow out of 1/3 ft of ribbon. Which equation would be used to show

55. ## Calculus

A 13 foot ladder is leaning against the house when it's base starts to slide away. By the time is 12 feet from the house the base is moving at the rate of 5 ft/sec. 1.How fast is the top of the ladder sliding down the wall at that moment? 2. At what rate

56. ## Physics

A 2050 kg truck is traveling east through an intersection at 2.3 m/s when it is hit simultaneously from the side and the rear. (Some people have all the luck!) One car is a 1200 kg compact traveling north at 4.5 m/s. The other is a 1600 kg midsize

57. ## math

The graph shows the cost C in dollars to rent a car for one day as a function of the number m of miles driven. Which of the following functions models the situation?

58. ## Us History

In need of help, Who Did Alfred T Mahan Look Up To As A Child?

59. ## Physics

Electrical conductivity in liquid solutions depends on the presence of free 1) neutrons 2) protons 3) molecules 4) ions explain please I really don't understand this question

60. ## U.S History

Why was there an Agricultural boom during WW1? Why did the boom come to an end?

61. ## physics

wo packages at UPS start sliding down the ramp shown in the figure. Package A has a mass of 4.50 and a coefficient of kinetic friction of 0.190. Package B has a mass of 10.5 and a coefficient of kinetic friction of 0.170.

62. ## Korean

how do you say merry christmas in korean?

63. ## STATS

Scientists wish to test the mind-readiing ability of a person who claims to have ESP. They use five cards with different and distinctive symbols( square, cicrle, triangle, line, squiggle). Someone picks a card at random and thinks about the symbol. The

64. ## Pre-Calc-Please check I'm desperate

Please check my answers I really need to do my homeowrk!;This are polar coordinates we're studying-I'm almost positive the first two are correct. 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this

65. ## MATHS

A ROOM WALL MEASUREMENT IS LENGTH 54FT,HEIGHT 11FT.HOW MANY SQUARE METERS OF TILES WILL COVER THE WALL? THE TILES SIZE IS 8/12CM .

66. ## Chemistry

Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6Cl2(g) ! 4 PCl3(g) . A sample of PCl3 ofmass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the percentage

67. ## Physics

A child rides a toboggan down a hill that descends at an angle of 11.5 degrees to the horizontal. The hill is 36.6 m long. What is the horizontal component of the child’s displacement? Answer in units of m. What is the vertical component of the child’s

68. ## stoichiometry

Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25 moles of oxygen gas react

69. ## Math

I am working with bases. I don't understand. What, if anything, is wrong with the following numerals? A. 306four B. 1023two

70. ## physics

A daredevil jumps a canyon 10.6 m wide. To do so, he drives a car up a 19° incline. (The daredevil lands on the other side of the canyon at the same elevation as takeoff.) What minimum speed must he achieve to clear the canyon?

71. ## SCIENCE

SUNLIGHT AND WIND ARE INEXHAUSTIBLE RESOURCES. EXPLAIN WHY THEY ARENT USED TO PRODUCED ALL OF OUR ENGERY

72. ## Government.

The main reason why the Constitution dealt specifically with the crime of treason was that: A. The framers wanted to prevent all treason in order to protect the democracy. B. Treason was not considered a serious crime before the Constitution was written.

73. ## Maths

if cosA = 4/5; sin

74. ## Chemistry

The nuclide 12 N 7 is unstable. What type of radioactive decay would be expected??? my guess is either gamma or beta. are either of those correct?

75. ## Chemistry

HELP! we just started kinetics and i have no clue how to solve this problem. For the reaction between reactants A and B below, if 4.925 moles of A is placed into a flask with excess B it is found that the amount of A remaining after 6.85 seconds is 2.737

76. ## Physics

The 2-cm (radius) current loop shown in the figure is changing from Î¸1 = 11 degrees to Î¸2 = 66 degrees in a magnetic field 2 T in 0.5 seconds. What is the magnitude of the induced emf to the nearest hundredth of a millivolt? The wire in Problem 2 has

77. ## Japan

social studies) Question:How many distance is Japan from the US? It is 6760 from New York Ciy to Tokyo It is 4791 miles from Seattle to Tokyo It is 3862 miles from Honolulu to Tokyo It is 2444 miles from Anchorage to Sapporo Take your pick The last entry

78. ## Algebra

From fours cans with 96 bolts in each 3/4 of the bolts In one can are used, as are 5/8 of the bolts in the second can are used, 1/2 of the bolts in a third can, and 1/4 in the remaining can. What is the fraction in the total number of bolts remaining in

79. ## Algebra

The average number of bends which an electrician can finish per hour on a defective conduit bender is 2/3 the number that can be finished per hour on a bender in good repair. If it requires 45 minutes to bend 9 conduits with a defective bender, how many

80. ## Physics

Two point charges of equal magnitude repel each other with a force of 5.49 Newtons when separated by 15.1 cm. Find the magnitude of the charge (in Coulombs).

81. ## Physics

A force of 0.460 N exists between a positive charge of 8.50 10-6 C and a negative charge of -3.22 10-6 C. What distance separates the charges?

82. ## Math

Maribeth works in a dog rescue centre. At feeding time, 5 of the dogs each get 3/4 kg of food and 3 dogs each get 3/5 kg of food. How much food does Maribeth feed to the dogs?

83. ## Programming

In HTML, we can include any Unicode characters. All special characters in HTML are specified in the form: &spec; These special characters all start with the ampersand and end with a semicolon. How would you specify the symbols ¬ , ∨ , and ∧ in HTML?

84. ## Math

What colors are specified by these hexadecimal values? How many bits are assigned to each color? What is the range of values for each of the primary colors used on web pages?

85. ## Math

How many hexadecimal digits are used to specify a color in a web page?

86. ## Physics

While decorating her apartment, Julie pushes a 608-N dresser across the floor by applying a 578-N horizontal force. The coefficient of friction between the dresser and the floor is 0.745. Determine the magnitude of the acceleration (in m/s/s) of the

87. ## Physics

Block B is on a resistance-free surface and a horizontal force of 4.54 N acts on the block. This force produces an acceleration of 2.44 m/s/s. Block A, which has a mass of 4.38 kg, is then dropped onto Block B as shown in the "after" picture. The same

88. ## World History

The death of Charlemagne and decline of his empire led to this system becoming a widespread solution to a lack of central authority. A) Feudalism B) Communism C) Confucianism D) Anarchism

89. ## music

what do neumes above text represent?

90. ## Algebra

-2y + 6x + 2 = 0 y= -4 - 2x

91. ## Math

I need help on a quiz it is called mid unit review for 7th grade

92. ## physics

A force F applied to an object of mass m causes it to move in a straight line a distance D during an interval of time T. The object gains kinetic energy K during this interval. In which of the following cases will the object gain the same kinetic energy K?

93. ## Calculus

Find d/dt integral[2 to x^2](e^x^3)dx

94. ## Statistics

What is a diagram that shows the frequency of data on a number line. I honestly don't know.

95. ## math

Find the area of the figure. Round to the nearest tenth if necessary. L(3,6), M(7,3), N(6,-1), J(2,-1), K(3,3)

96. ## Math

Solve the equation. 100^(5x+2)=1000^(4x-1)

97. ## Geometry

10. Which of the following quadrilaterals always have diagonals that are congruent. Circle all that apply Parallelograms Rectangles Rhombi Squares Isosceles trapezoids 19. Given square ABCD: if the measure of angle ACB = (1x - 32) degrees, find the value

98. ## PAVCS

How many moles of gas are in a 20 liter scuba canister is 300k and pressure is 200 atm

99. ## Social Studies

1. In the AD 600s, North africa was conquered by A. Egyptians B. Arab Muslims C. Europeans D. Africans from south of the Sahara