# Jessica

Newest questions and responses by Jessica

How to use the method of decomposition of this trinomial and turn it into standard form: 0.005x^2 - 0.801x + 26.928

2. ## Math

Which is the greatest number...? -3, 10, -16, 9

3. ## algebra

The figures in the pair are similar. Find the missing length. The image is of two proportionate isosceles triangles with vertical bases. One triangle has its base marked as 6 cm and two sides as 4 cm and 4 cm respectively. The other triangle has its base

4. ## math

Just wondering, but can you do everything that you do on desmos.com with a TI-84 calculator?

6. ## Chemistry

Given the reaction: 3 Cu + 8 HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O If 12.0 moles of copper react, how many grams of HNO3 are needed?

7. ## Chemistry

A sample of propane, C3H8, contains 18.0 moles of carbon atoms. How many total moles of atoms does the sample contain?

8. ## math

Martin has 12 times as many baseball cards as Josie. Josie has 29 more cards than Kal. How many baseball cards does Martin have? what is the answer?

9. ## Chemistry

Two compounds that contain Cu and Cl have the following masses: Cpd A: 32.10 g Cu and 17.90 g Cl Cpd B: 23.64 g Cu and 26.37 g Cl Are the compounds the same? If not, what is the lowest whole-number mass ratio of Cu that combines with a given mass of Cl?

10. ## Science

Using: ammonium nitrate → water + nitrogen 1 oxide, write a balanced using correct chemical formulas the 1 should be a roman numeral but I don't know how to indicate that Thank you!

11. ## Chemistry

Balance the following by placing the correct coefficients in front of each formula _____ CaO + _____ P4O10 ______ Ca3(PO4)2 All the numbers are in subscript b. Using: ammonium nitrate → water + nitrogen I oxide, write a balanced using correct chemical

12. ## math

Give an algebraic expression for the following: 𝑠in(arctan 𝑥) Thank you!!

13. ## Math

How do I find the decimal for 12/6? Please put each step in order

14. ## science/astronomy

ok so I have this question which asks that considering water erupts from Saturn's moon(Enceladus) and escapes into space, what would be the water's minimum speed of eruption. A. 100km/h, B. 210km/h, C. 425km/h, D. 850km/h, E. 1700 km/h If anyone knows how

15. ## algebra

solve the following equation algebraically. show your work. 17 = -13 - 8x

16. ## Math

How do I subtract negative fractions with unlike denominators? I'm not cheating on a test for connexus and I'm not asking for freaking answers, I'm asking for someone to tell me how to do this. And don't bother answering if you're just gonna put confusing

17. ## Psychology

Describe what successful aging means to you by identifying at least 3 characteristics of successful aging that you have met. What characteristics of successful aging do you need to work on?

18. ## maths

The scale of the map is 1.20000 the road is 28 km apart from town to town how far apart will it be in on the map in cm

19. ## Maths

x is partly constant and partly varies with y.When y=5,x=19 and when y=10,x=34. (i) Find the relationship between x and y. (ii) Find x when y=7.

20. ## Math

A cup of coffee has cooled from 98degreesC to 50degreesC after 15 minutes in a room at 25degreesC. How long will it take to cool to 40degrees​C? Someone else helped me on a problem similar to this, however I keep getting it wrong by decimals. i.e the

21. ## math

Diego contributes to a money market account that earns 4.8​% annual interest. What should his monthly payment be if he wants to accumulate ​\$210,000 in 30 ​years? Thank you so much!!

22. ## temperature

A cup of coffee has cooled from 95degreesC to 60degreesC after 13 minutes in a room at 24degreesC. How long will it take to cool to 30degrees​C? Thank you so much!!

23. ## chemistry

Calculate the energy of a photon of red light with a wavelength of 6.45 x 10-5 cm. h = 6.626 x 10^-34 Js c = 2.998 x 10^8m/s Thank you!

24. ## Math

For two parallel lines slopes, could one of them be a reduced version of the other. for example would y=1/2x+6 be parallel to y=2/4x+12 don't pay any mind to the y-intercepts, I just randomly pulled them out of my head. I just want to know if lines can be

25. ## Socials

S.S 10 Why would a prime minister call an early election? What are 5 functions or tasks of party volunteers Please help I am struggling with these two questions

26. ## math

Using only​ algebra, find a cubic function with the given zeros. -2, 3, -7 the polynomial function is: f(x)=x^3+ (BLANK) x^2-13x-42 i can't figure out what BLANK is Thank you!

27. ## Chemistry/math

Convert 2.4 atm to kPa. Does this represent standard pressure? Show all of the work please Thank you!!

28. ## Chemistry

How could you separate a mixture of water, rock salt, sawdust, and iron filings? Would this require physical means, chemical means, or both?

29. ## math

Confirm that f and g are inverses by showing the Composition of Inverses Rule for both f(g(x)) and g(f(x)) algebraically: f(x)=9x+3 g(x)= (x-3)/9 thank you!

30. ## math

Find the algebraic relationship between x and y: x = 5 – 4t^2 and y = 2t - 2 Thank you!!

31. ## Economics

Give and example in which one person has an absolute advantage in doing something but another person has a comparative advantage.

32. ## math

Describe how the graph of y = ((2x + 12)^2) + 3 can be obtained from the graph of y = x^2 Thank you!

33. ## math

How much 10​% solution and how much 65​% solution should be mixed together to make 100 gal of 35​% ​solution? Thank you!!

34. ## math

A graph G is obtained from a graph of y by the following sequence of transformations. Write an equation whose graph is G. y=|x|: a shift left 9 ​units, then a vertical stretch by a factor of 7​, and finally a shift down 6 units Thank you so much!!!

35. ## Math

The smallest figurine in a gift shop is 2 inches tall. The height of each figurine is twice the height of the previous figurine. Write a power to represent the height of the tallest figurine. Then find the height.

36. ## math

Find​ f(g(x)) and​ g(f(x)). State the domain and formula for each. f(x)=7x+8; g(x)=x-3 Thank you!!

37. ## math

Identify the function that fits the description given below. The six functions that are bounded below. A. y=(x-1)^2 B.y=int(x+1) C. y= -sqrt(x) D. y=x^3+1 E. y=2- (4/(1+e^-x)) F. y=-x G. y = -sin x H. y= |x|-2 I. y= cos x+1 J. y=(x+2)^3 K. y= -1/x L. y=

38. ## mathematics

A school has enough food to last 90 pupils for 7 days .If 10 more pupils come ,how long would the food last?

39. ## Math

Mr. Brown owned a house which he rented for \$60 a month. The house was assessed at \$9000. In 1975 the rate of taxation was increased from \$25 to \$28 per \$1000 assessed valuation. By what amount should the monthly rent have been raised to absorb the

40. ## Pharmacy calculations

Based on the formula below, what quantities of each are needed to make 180 ml of this lotion? Benzyl Benzoate 250 ml Triethanolamine 5 ml Oleic Acid 20 ml Purified water to make 1000 ml

41. ## math

Division question John pays 45 dollars months (30 days) for a membership. what is the cost in one day? I don't know if you 45/30 or 30/45 can someone explain it to me

42. ## English

I have a few questions about grammar 1, Does a sentence that starts of with "if" an independent sentence or a dependant? 2, Does a sentence that starts of with "in order to" an independent sentence or a dependant? 2, is there a comma before “instead

43. ## Math

A conveyor belt carries supplies from the first floor to the second floor which is 30ft higher. The belt makes a 60 degree angle with the ground. How far do the supplies travel from one end of the conveyor belt to the other to the nearest foot? If the belt

44. ## science/math

Jane runs a track race at 7.0m/s for 40 seconds using a force of 140N. How much work has she done? (remember s=d/t)

45. ## Socials

To what extent does nationalism bring people together or drive them apart? What factors influence nationalism and national identity?

46. ## math

Find the volume of the oblique cylinder. Round to the nearest tenth. Radius-13.8in Height - 20.5in Thank you!!

47. ## science

An element's atomic number is 52. How many electrons would an atom of this element have?

48. ## science

Electromagnetic and mechanical waves have different characteristics that make them advantageous for certain applications. Select the reasons that mechanical waves, such as ultrasound, are used for soft tissue imaging and to identify fractures in metals. I)

49. ## Math/Algebra

The graph of f(x)=sin(x) is transformed into a new function, g(x) , by compressing it vertically by a factor of 1/2 and shifting it 3 units down. What is the equation of the new function g(x) ?

50. ## Math/Algebra

Let p(x)=90/9+50e ^ −x . What is p(5) ?

51. ## Math/Algebra

On Dolphin Beach, the high tide is 2.2 meters and only occurs at 12 a.m. and 12 p.m. The low tide is 1 meter and only occurs at 6 a.m. and 6 p.m. Which function models the height of the tide t hours after 12 a.m.? a. h(t)=0.6cos(πt/6)+1.6* b.

52. ## Math/Algebra

The equation ​ yˆ=−6.2x2+41.5x−5.6 ​ approximates the average number of cars that pass through an intersection x hours after 3:00 p.m. What is the best estimate for the average number of cars that pass through the intersection at 5:30 p.m.? a. 35

53. ## Chemistry

What is the net ionic equation for the neutralization of CHOOH with NaOH?

54. ## math

1)what is the smallest integer greater than 1 that leaves a remainder of 1 when divided by any of the integers 8,9, and 10? 2) The square root of the difference of (B^2 /16) and (b^2/25) 3) Mr. Baker is 30 years old when his son is 4 years old. In how many

55. ## math

1) the average of four positive numbers is 15. The second number is 2 times the first number. The third number is twice the second. The last number is the last square of the first number. what is the largest number? 2) suppose that 4x^2 + 8xy +4xy^2=576.

57. ## law

'Administrative law involves decision making within the bases of a government organisation and deals with powers and functions of the administrative authorities, and the manner in which they form legislations to enforce legal obligations upon individuals.'

58. ## Law

Can someone please explain to me what is administrative law. (country: Australia)

59. ## Math

Which is an irrational number? A:0.12*** B:0.1257486 C:0.12121212 D: 0.11111 Please help ;-; Also it would be appreciated if someone gave all the answers to the quiz

60. ## math

In triangle XYZ, the length of side XY is 29 mm and the length of side YZ is 43 mm. Which of the following could be the length of side XZ?

61. ## math

Simplify logx(x/4)+3logx(2/5)-log21(2/25)

62. ## Math

List 12pt 3gal and 16c from least to greatest

63. ## math

The table below shows the average diameter of a pupil in a person's eye as he or she gets older. age (years). Average Pupil Diameter (mm) 20 4.7 30 4.3 40 3.9 50 3.5 60 3.1 70 2.7 80 2.3 What is the average rate of change, in millimeters per year, of a

64. ## Math

A parking garage charges a base rate of 3.50 for up to 2 hours, and an hourly rate for each additional hours. The sign below gives the prices for up to 5 hours of parking. Parking rates: 2hrs. \$3.50 3hrs. \$9.00 4hrs. \$14.50 5hrs. \$20 Which linear equations

65. ## General Chemistry II

At a pressure of 1ATM, _____ KJ of heat is needed to vaporize a 32.3 g sample of liquid ethanol at its normal boiling point of 78.4 C. Boiling point (78.4 C), specific heat (2.46 J/g C), and Hvap(78.4 C)=38.6 KJ/mol are provided. Please include how to

66. ## Math

Evaluate 2/3 x for x=3/4 Hi, I don't know what they are asking me, can anyone help?

67. ## math

Evaluate (2.1 x 10^4) + (5.68 x 10^-2)Express the result in standard form. Can you explain your steps? I don't understand how to solve this with the negative 2

68. ## Math

1) Maria is 6 times as old as Tina. In twenty years, Maria will be only twice as old as Tina. How old is Maria now? Please explain how you got your answer. Thanks! 2) Rating. Relative speed of flow 10W. Half as fast as 5W 15W. Half as fast as 10W 20W. Half

69. ## Math

Savings-5% Others-25% Food- 10% Housing- 25% All taxes- 35% The pie chart above shows the Carson family's expenses for 1994. The Carsons had an income of \$40,000 in 1994. In 1995 the Carsons income was \$10,000 greater than in 1994. The family spent the

70. ## Algebra2A

I am confused with this question: Find teh value of y for a given value of x, if y varies directly with x. If y = 6 when x = 2, what is y when x = 5?

71. ## Algebra2A

This is one of the questions on the semester exam, which is: Which algebraic expression represents the following phrase? 'The square of the sum of t and 6.' A. t^2 + 6 B. t + 6^2 C. (t + 6)^2 D. 2(t + 6) I do believe it is C, but I am not sure.

72. ## Math

The number of bonds an atom can form is represented by A pair of dots*** Unpaired dots Total number of dots One dot

73. ## Science

Which element is most stable? Chlorine Helium*** Silver Oxygen

74. ## spanish

change the verbs from the present tense to the present progressive Nosotros salimos de la escuela Answer: estamos saliendo

75. ## Math

A certain college had 5,000 applicants and 3/8 of thes applicants were female. The college admitted 40 percent of all applicants and an equal number of male and female applicants. What is the percentage of female applicants admitted to the college? What is

76. ## Math

(k + 1/k) ^2 =36 what is k^2 + (1/k)^2 34?

77. ## Math

There is a picture of a square - BCAD, and then there is a triangle EAD. B. E C A. D FIGURE NOT DRAWN TO SCALE In the figure above, the perimeter of the equilateral triangle AED IS 6. What is the area of the rectangle ABCD? A) 6 B) 4 C) 4 radical 3 D) 3

78. ## Math

If x^2 - x - 6 = 0 and x^2 + 5x+6=0, what is the value of x? A) -3 B) -2 C) 2 D) 3 E) it can't be determined from the information given. I got B. By plugging in the answers. Is there an another way to solve this?

79. ## Math

Which ordered pair could be removed to make a function? {(1,3) (2,4) (3,4) (3,6) (5,10) (6,3)} A) (2,4) B) (3,4) C (1,3) D) (6,3)

80. ## Math

The planet Mercury is approximately 6 x 10^7 miles from the Sun. The distance between the Sun and Mars is approximately 2 x 10^8 miles. ABOUT how many times farther from the Sun is Mars than Mercury? 2 3 20 30 I got B? Can you please check? Thank you!!

81. ## Math

Due to the plate tectonics, the summit of Mount Everest moves about 4.5 X 10 ^-3 meter northeastwar in one year. About how many meters does the summit of Mount Everest move in 11 years? 4.09 x 10 ^-3 4.95 x 10 ^-3 4.09 x 10 ^-2 4.95 x 10 ^-2 Can you please

82. ## Math

A camper attaches a rope from the top of her tent, 4 feet above the ground, to give it more support. If the rope is 8 feet long, about how far will the stake need to be from the middle of her tent?

83. ## Geometry

8. The lateral area of a cone is 555πcm^2. The radius is 15.1 cm. What is the slant height to the nearest tenth of a centimeter? A. 36.8 cm B. 11.7 cm C. 83.8 cm*** D. 25.5 cm 10. What is the volume of the given prism? Round the answer to the nearest

84. ## Geometry

I have a few questions I am confused on. #4. Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. The figure is not drawn to scale. A. 795 m^2; 809 m^2 B. 758 m^2; 849 m^2 C. 795 m^2;

85. ## Precal

solve for x 7^x/2=5^1-x what i have so far is: (x/2)ln7=(1-x)ln5 im not sure where to go from there

86. ## Algebra2

I am doing the Factoring Quadratic Expressions Quiz, has anyone done it? I am really stuck on it.

87. ## History

1.Which event took place soon before The United States annexed Texas. A Sam Houston became president B Texas became a u.s. territory C James Polk became president D Texas wrote a new constitution 2.Which of the following images would be the best symbol of

88. ## Chemistry

How many copper atoms are in a pure copper statue with a mass of 200 kg ?

89. ## biochemistry

) If the loss of each electron represents the liberation of 1.875 x 10-19 J, calculate the number of kJ and Cal (kcal), of fructose and oleate in a 1.00 g sample. (Significant digits count.) Fructose kJ = _____________ Cal = _____________ oleate kJ =

90. ## biochemistry

Calculate the total number of electrons that are lost in 1.00 g samples of fructose and oleate. (Note: the number of electrons lost per carbon atom is equivalent to its increase in oxidation state.) No. e- lost in 1.00 g fructose = _______________ No. e-

91. ## Math/calculus

Prove Sin 8theta -sin 10theta= cot 9theta (cos 10theta - cos 8 theta)

92. ## Math/calculus

Tan 165° Use appropriate identity and evaluate

93. ## Math/calculus

Cos^2x-sin^2x/sin^4x-cos^4x Simplify

94. ## Math helppp

Graph f (x) = 3cos (4pix -pi/2) -2

95. ## Math/calculus

Graph f (x) = 3cos (4pix -pi/2) -2

96. ## Math/calculus

Earth orbits the sun at an average distance of about 150 million kilometres every 365.2564 mean solar days, or one sidereal year. What is the linear velocity of th3 Earth in kilometres per hour?

97. ## Math/calculus

A small plane leaves Victoria airport and flies at a compass heading of 330°. If the plane cruises at 125km/he for 90mins, how far north and how far west will the plane gave flown

98. ## Math

2a+b=11 and 4a^2 +b^2=101, what is the value of ab? A 4 B5 C12 D6 E20