Jacob

Newest questions and responses by Jacob
1. pre calculus

A force of 350 lb. is resolved into forces at right angles to one another, the angle of F2 being 67 from the 350 lb. force. Find F2.

2. math

what is \$35 for 25 tapes

3. Algebra help

Two less than three-fourths of a number is 10. What is the number? A. 10 2/3 B. 13 1/3 C. 15 1/3 D. 16 Please help meh! God bless you :-)

4. english

How education sector can be the one which can make american dream attainable to everyone?

5. science

how do u prepare a 250-ml of 2.35 M HF dilution from a 15.0 M stock solution?

6. Home economics

The areas in home economics

7. Spanish Future tense

Rewrite the paragraph in the future tense. Mi amiga y yo vamos a viajar a España este verano. Ella va a ir más temprano y va a pasar una semana en Madrid sin mí. Yo voy a llegar más tarde y nosotras vamos a reunirnos en Sevilla. Vamos a pasar tiempo

8. Spanish

Completa cada oración con la forma correcta de SER o ESTAR. 1.Después del semestre, los estudiantes __________ muy cansados. 2.Mis compañeros y yo __________ trabajando en el mismo proyecto. 3.Esas __________ ideas muy buenas. Las voy a usar para la

9. Systems and signals, Calculus

Determine the natural response for the systems described by the following difference equations:? Edit a) y[n] - 9/16y[n-2]=x[n-1], y[-1]=1, y[-2]=-1 b)y[n]=-1/4y[n-1] - 1/8y[n-2]=x[n] + x[n-1], y[-1]=0, y[-2]=1

10. math

What do you do to tell whether a rational or irrational is really a rational or irrational number?

11. Vectors

If ∣x∣=8, ∣y∣=13 and ∣x+y∣=15, determine ∣x-y∣. You may want to draw a diagram to help with your solution.

12. science

You want to calculate the displacement of an object thrown over a bridge. Using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

13. math

Describe and correct the error made in solving the literal equation at the right for n. 2m = -6n + 3. 2m + 3 = -6n. 2m + 3/-6 = n

14. technology

1. Science is the body of knowledge and methods produced by engineering. True False 2. Technology changes society. True False 3. Although engineers do not always complete the steps of design process in the same order which of the following is almost always

15. technology

1. Science is the body of knowledge and methods produced by engineering. True False 2. Technology changes society. True False 3. Although engineers do not always complete the steps of design process in the same order which of the following is almost always

16. technology

1. Science is the body of knowledge and methods produced by engineering. True False 2. Technology changes society. True False 3. Although engineers do not always complete the steps of design process in the same order which of the following is almost always

17. math

Which of the following results in a sum or a product that is rational choose all that apply 3.12 x 1.4 √9 x √25 √2 x √3 4 + 5 n x 3 Molli purchased 9 apples for \$3.96 molli divided \$3.97 by 9 why my molli perform this calculation in order to find

18. Maths

Simplify these expressions. 6 * a + 4 * a* a 5a² + 3a² + 2a how would you work it out?

19. science

A study demonstrates that treatment of peptic ulcers with antibiotics results in improvement in a large number of patients. this implies which of the following

20. Math

Dan will donate up to \$480 to charity. The money will be divided between two charities: the City Youth Fund and the Educational Growth Foundation. Dan would like to donate at least to the Educational Growth Foundation. He would also like the amount donated

21. Vectors

Find the intersection of those two lines r=(2,9)+s(1,1) and r= (-3,2) + t(1,2) and then find the area of the triangle whose vertices are the intersection point, s = 0 on L1 and t = 3 on L2. I already found the point of intersection. I just need to know how

22. Math

In an effort to retire comfortably, you decide to deposit \$750 at the end of every month into an annuity that pays 5% compounded monthly. How much will you have saved in 40 years when you are ready to retire? Round to the nearest cent.

23. math

A HOSPITAL(H) IS 7KM EAST AND 5KM NORTH OF A SCHOOL(S). CALCULATE THE BEARING OF H FROM S

24. math

A charity raffle offers a first prize of \$1,000,000, a second place prize of \$100,000 and a third place prize of \$10,000. A total of 500 000 tickets will be sold. What price should be charged for a ticket in order for the charity to make a 60% profit on

25. English

I have an assignment to write a 4 page audience analysis essay of a persuasive article. What is an audience analysis essay, and how do I go about writing a 4 page audience analysis based off of an article?

26. Chemistry

2. Solid ammonium iodide decomposes to yield ammonia gas(NH3) and hydrogen iodide gas at 400oF. The equilibrium constant for this reaction is 0.215. Ten grams of ammonium iodide are sealed in a 10.0 L flask at equilibrium. Complete the following: a. Write

27. English

1. The best way to improve listening comprehension is to a. take informal notes on what you hear. b. use complete sentences to take detailed notes of both main ideas and details. c. concentrate on listening to the speaker's transitions. (C) 2. Critical

28. math

which word or words correctly complete the sentence? a ________ has five faces, five vertices, and eight edges. a. triangular pyramid b. cube c. pentagonal pyramid d. rectangular pyramid

29. Physics

A frog in a hemispherical pod finds that he just floats without sinking in a fluid with a density of 1.33 g/cm3. If the pod has a radius of 5 cm and negligible mass, what is the mass of the frog? Answer in units of kg.

30. Math

water accounts for about 60% of a person's body weight. a. write an equation that represents the water y of a person who weights x pounds. identify the independent variable and the dependent variable. b. make an input-output table for the equation in part

31. Pre calc

Use half angle indentites to find an exact value without a calculator Cos(11π/12)

32. Pre calc

Perform the indicated operation and simplify the result Tanx(cotx-cscx)

33. Math

The temperatures at 10pm were 58f outside and 67f inside. At 4am they were 48f outside and 62f inside. Draw a graph of these data points and calculate slope of the line connecting them.

34. Math

A tool shed 250cm high and 100 cm deep is built against a wall. Calculate the shortest ladder that can reach from the ground, over the shed, to the wall behind. How can I solve this?

35. Pre calc

Perform the indicated operation and simplify the result . Cot x(tan x- sec x) Please help , I am struggling a lot !! Thank you!!!

36. Physics

On a very muddy football field, a 100 kg linebacker tackles an 75 kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.5 m/s north and the halfback is sliding with a velocity of 7.5 m/s east. What is the magnitude

37. math

Paulo earns a salary of 15000\$ per month for selling cell phones. He receives an extra 30\$ for each cell phone over 100 units that he sells. How much will be make if he sells R cell phones? 50 cell phones?

38. Math

Choose the symbol that completes the statement. 7/8. 8/10* A < B > C =

39. Physics

A bicycle is racing around on a horizontal surface in a circle of radius 27 m. The force exerted by the road on the bicycle makes an angle of 16 degrees with the vertical. What is its speed?

40. Language arts

The word expectations best describes which situation from “Two Kinds”? Waverly’s reputation as a chess champion the mother’s hopes for her daughter to become a prodigy Mr. Chong’s retirement from teaching piano the daughter’s performance at the

41. math

Sarah is 5 years younger than 9 times Mario's age

42. Physics

A red ball is thrown directly upwards from the ground with an initial velocity of 35.0 m/s. At the same time, a blue ball is thrown directly upwards from he ground with an initial velocity of 10.0 m/s. 1. How high is the red ball when the blue ball reaches

43. Maths

Six numbers are written in ascending order: 1.4, 3, 4.7, 5.8, a, 11. Find all possible values of a if the number 11 is considered to be an outlier. The answers say 5.8 is less than or equal to a

44. Maths

Find the interquartile range for a set of data if 75% of the data are above 2.6 and 25% of the data are above 3.7.

45. Mathematics question

In my town some of the animals are really strange. Ten percent of the dogs think that they are cats and ten percent of the cats think they are dogs. All the other cats and dogs are perfectly normal. One day I tested all the cats and dogs in the town and

46. Maths

In addition to spanning a river which is 50 metres wide, a straight bridge also has considerable overlap of both banks of the river. One third of the bridge overlaps one bank and one half overlaps the other bank. The total length,in metres, of this bridge

47. Washington state history

please help What about Washington’s post-World War II economy does the image represent? A.a change in focus to large businesses, science, and technology B.a change in focus to large businesses, science, and technology C.a decline in building and city

48. College Chemistry

You have combined 1.218 moles of calcium ions and 0.943 moles of lithium ions in enough solvent to make 500.00mL of solution. What is the mole fraction of lithium ions in this solution? What type of problem is this and how do I set it up to solve?

49. maths

A 60m long bridge has an opening in the middle and both sides open up to let boats pass underneath. The two parts of the bridge floor rise up to a height of 18 m. Through what angle do they move?

50. Algebra 2

Use the values of a_1( 1 is below the a) and s_n (n is below also) to find the value of a_23. A_1=10, s_23=2760, find the value of a_23 Please help, I really need help. Thanks.

51. spanish

rewrite each statement two ways using object pronouns : Tenemos que recordar la informacion.

52. Physics

A diver springs upward with an initial speed of 2.93 m/s from a 3.0-m board. (a) Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = -3.0 m (measured from the board), assuming that the

53. math

seven times the sum of a number and seven is 13 more than the number. what is the number? i know it cant be that hard but please help

54. Math

A box weighing 700 pounds is on a ramp inclined at 15 degrees with the horizontal. Find the force necessary to prevent the box from sliding down the ramp.

55. Math

A diagonal of a parallelogram is 10 inches long and makes angles of 25 degrees and 43 degrees with the side. how long is the longest side?

56. word problem

Ashton and molly start out 97.2 miles apart .They begin riding their bicycles toward each other with Aston riding three mph faster than Molly. If they meet in three hours, how fast was each person riding? Please help

57. English

Help Me!! ____no centeral goverment at the time, there would have been no peace inth land. a)There had been b)Should there be c)Had there been Wich will be correct answer?

58. Calculus

Prove that the function defined by: f(x)={1 if x is rational, 0 if x is irrational is not integrable on [0,1]. Show that no matter how small the norm of the partition, ||P||, the Riemann sum can be made to have value either 0 or 1.

59. chemistry

Use the table of complex ion formation constants to calculate the molar concentration of free Fe^2+ in 0.510M aqueous solution of potassium hexacyanoferrate(II) K4(Fe(CN)6) at 25 degrees celsius. I know the answer is 1.96*10^-6 m, but I'm at a loss on how

60. Chemistry

Urea, which has the chemical formula (NH2)2CO, is a fertilizer that can be prepared by reacting ammonia (NH3) with carbon dioxide (CO2). Given the following chemical equation, what is the theoretical yield of urea (in grams) if 4.16 mol ammonia is the

61. Science

What is the identity of the precipitate that forms when 70 mL of 0.3 M BaCl2 reacts with 65 mL of 0.35 M Na2CO3

62. Physics

State the similarities between Coloumb's law And Newton's Law Of Universal Gravitation.

63. Chemistry

Fireflies flash at a rate that depends on the temperature. At 29oC, the average rate is 3.3 flashes every 10 seconds, whereas at 23oC, the average falls to 2.7 flashes every 10 seconds. Calculate the "energy of activation" (in kJ/mol) for the flashing

64. Physics

A hollow sphere has a uniform volume charge density of 4.61 nC/m3. The inner radius is a = 14.6 cm and the outer radius is b = 43.8 cm. What is the magnitude of the electric field at 21.9 cm from the center of the sphere? What is the magnitude of the

65. Math

Order the following from least to greatest 0.3 3/5 0.66 2/3 0.35

66. Linear Algebra

(a) Use the triangle inequality: ||u + v||

67. Linear Algebra

Find the matrix of the following transformations: (a) Multiplication of the point (x, y, z) in ℝ^3 to give the point (x - y, y + 2z, x + z) (b) Reflection of points in ℝ^2 across the line in y = x.

68. Math

-1/2x-3greater than 8

69. algebra

Jane has \$4.50 in pennies, nickels and dimes. She has twice as many pennies as she has nickels and dimes combined. How many of each coin does she have?

70. english3

Even a young actor can appear old through the ___ of stage makeup.

71. english

Pinocchio's lies cause his nose to grow, but when he ___ it returns to its usual size.

72. math

A bag contains 45 marbles of various colors. Jon draws 60 times, each time replacing the marble before drawing again. He gets a total of 12 blue marbles. Which is best prediction of how many blue marbles are in the bag?

73. Math

The table shows the results of a spinner with four colored sections. Use the table to answer the question. The spinner is spun 50 more times. Which is the best prediction for the number of times the spinner will stop on blue?

74. math

Brahim completed 18 free throws and missed 12. Using experimental probability, how many free throws is he predicted to complete in the next 100 tries?

75. calculus

Find the values for the following functions. If f(x)=2^x, show that f(x+3) -f (x-1)=15/2f(x) If G(x)= sin 2x, find G(0),G(1/4 pie),and G(7/8 pie)

76. calculus

Find the domain of the variable x for which the following equations determine y as a real function of x. If G(x)= sin 2x, find G(0),G(1/4 pie),and G(7/8 pie) can someone help me please!

77. Math Help ;)

So, I've been stuck in these for quite some time.... can someone help me? Which ratios can form a proportion? A) 9/45 , 8/40 B) 8/12 , 12/21 C) 8/12 , 12/15 D) 9/22 , 14/28 I think it might be C but my brain is fried. Thank you so much, Jacob

78. Physics

A football is kicked at ground level with a speed of 17.7 m/s at an angle of 39.8 ∘ to the horizontal. How much later does it hit the ground? Answer=> t=_____ s Express your answer using three significant figures and include the appropriate units.

79. Chemistry

A 50.0 mL aqueous solution of sodium hydroxide has a pH of 12.50. If 36.00 ml of 0.0200 mol/L sulfuric acid is added to this sodium hydroxide solution, what will be the new pH of the resulting solution? Assume that the temperature stays constant at 25 C,

80. Pre Algebra

A number is divided by -4, then multiplied by -5. The result is 40. What is the number? I had problem finding a formula for it. And this one was also like it. A number is multiplied by -8, then divided by -4. The result is 4. What is the number?

81. Check my awns-The true cost of fossil fuels - Quiz

_________ is a solid fossil fuel that forms from plant remains. Coal ** Hydrocarbon Natural Gas Petroleum Air pollution can be controlled by Permitting more storm runoff. Burning more coal. Eliminating Sewage Putting scrubbers on power ** Formed how are

82. math

Tommy walked 3 2/7 miles. write the distance Tommy walked as an improper fraction. A.4 B.4/3

Why were women fighting for suffrage? A:because they wanted to end abuse toward women B:because they wanted to win the right to vote**** C:because they wanted to gain the right to work D:because they wanted to end women's inequality Completely doing an

84. math

r is no less than 1 unit from 24

85. PreCalc

Suppose that \$14,000 is invested in a savings account paying 5.2% interest per year. (a) Write the formula for the amount A in the account after t years if interest is compounded monthly.

86. math

Tony bought some stock for \$504. If each share had cost \$4 less he could have bought 3 more shares for the same \$504. How many shares of stock did he buy

87. algebra

The diagonal and the longer side of a rectangular plot are together three times the length of the shorter side. If the longer side exceeds the shorter side by 140 ​feet, what is the area of the​ plot?

88. algebra

Find the equation for the graph of the path of a point​ P(x,y) that moves such that​ P(x,y) is the same distance from the point ​(14​,0) and the​ y-axis.

89. Algebra

Divide by long division (4x^3 - 2x^2 - 8x+3)/(x^2 +5) Please help I can't figure this out.

90. maths

Using trigonometric ratios find the remaining side lengths and angle measurements to 2 decimal places each: (a) α = 35°, β = 90°, a = 30 (b) α = 90°, b = 7, c = 6 (c) a = 33, b = 56, c = 65

91. Math

Why do you have to use estimation to find the number of triangles you need for the string? I was wondering why this question is quite confusing and i was wondering if you can explain it to me in a way i can understand it. I'm not looking for an answer just

92. Chemistry

0.5g of MG ribbon is reacted with 100ml of 1M HCL. The initial temperature of HCL is 20.4 degrees celsius. After the reaction the highest recorded temperature is 40.7 degrees celsius. Calculate the molar enthalpy of MG. I tried to find mol from HCl and

93. MATHS

The square of a number is 3 more than half the number.find the possible values of the number.

95. Algebra

The surface of the Grand Lake is at an elevation of 648 feet. During the current drought, the water level is dropping at a rate of 3 inches per day. If this trend continues, write an equation that gives the elevation in feet of the surface of Grand Lake

96. Math

If the perimeter of a rectangle is 70 feet what is the height to length of a ratio of 4:5

97. Math

A car leaves town traveling at 35 MPH. A 2nd Car leaves Town 2 hours later traveling in the same direction. In how many hours will the 2nd car be passing the first.

98. Math

A car leaves town traveling 35 MPH. Two hours later a 2nd car leaves, in the same direction traveling 55 MPH.In how many hours will the 2nd car be passing the first?