# josh

Popular questions and responses by josh
1. ## math

fifteen less than four times seven

2. ## math

1.A wind turbine has blades 50m in diameter and an overall height of 125m. If it has four blades instead of three, create four equations modelling the height of a point on the tip for each of the four blades. 2.Create a sine equation for the height of a

3. ## Chemistry(difficult)

A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of 206Pb per 1.185 g of 238U in the rock? The

4. ## Math

The park had initially planned to charge \$8 for admission and expected to have 2400 visitors a day. Allison and Juan were assigned the task of analyzing the park's admission revenues. 1.a)How much revenue would the park have for one day at the current

5. ## Calculus

find the exact value of sin 11pi/12 using the sum or difference formula.

6. ## science help plzzz

Multiple Choice 1. Which of Earth's spheres contains mountains, valleys, and other landscapes? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following are examples of destructive forces? (1 point) ice wind both ice and wind neither

7. ## Chemistry

Order in the increasing value of their polarity? HF NH3 H2O CO2 here i used the scale and got their numbers. HF>H2O>CO2>NH3 am i correct?

8. ## Chemistry

Determine the average rate of change of B from t=0s to t=352s. A to 2B Time Concentration of A (M) 0 0.670 176 0.385 352 0.100

9. ## calculus

A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches.

10. ## math

A man travels 12km due north, then 5km due east and then back to the starting point on a straight road. What is the total distance traveled?

11. ## Algebra

Three fourths of a number increased by 4 is at most 19

12. ## Physics

"The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the smaller heat capacity." Can someone explain why this concept is true or

13. ## maths

Rob is twice Joshua’s age. Nick is 5 years older than Joshua. The sum of all their ages is 45. How old is Nick?

14. ## Calc Help Please Again Last one!

Write out the form of the partial fraction decomposition of the function appearing in the integral: integral (6x-58)/(x^2+2x-63) Determine the numerical values of the coefficients, A and B, where A

15. ## Chemistry

1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the

16. ## english 11

4. Which of the following statements about Anne Bradstreet is NOT true? (1 point)Anne Bradstreet was never married. Anne Bradstreet was the first published poet in America. Anne Bradstreet was born and educated in England. Anne Bradstreet favored poems

17. ## maths

Millie, Josh and Libby receive a bonus at work. They are paid in the ratio of 2:3:4 Josh's share is £105. What was the total amount of the bonus before they shared it?

Multiple Choice 1. Which of the following statements describes the most common experience of Native Americans after encountering Europeans for the first time? (1 point) Native Americans thought the settlers had nothing to offer them in trade or knowledge.

19. ## math help plzzzz!!!!

Multiple Choice 1. What is 0.32 written as a fraction in simplest form? (1 point) thirty-two over one hundred eight over twenty-five one hundred over thirty-two sixteen over twenty-five 2. If Fran’s fudge recipe calls for two and one-half cups of sugar

20. ## physiscs

a 75w and 50 w incandescent light bulbs are designed fot use with the same voltage. what is the ratio of the resistance of the 75- w bulb to the resistance of the 50 w bulb?

21. ## chemistry

A certain reaction has a delta H= -75 kJ and an activation energy of 40 kJ. A catalyst is found that lowers the Activation energy of the forward reaction by 15 kJ. What is the activation energy of the reverse reaction in the presence of this same catalyst?

22. ## Chemistry

The estimated proven world oil reserves in 2013 were 1526 billion barrels. The world annual rate of use was 32.6 billion barrels. How long will these reserves last if this rate of use continues? (The rate of use is actually likely to increase.)

23. ## physics

A stone is projected vertically upwards with a speed of 30ms from the top of a tower of height 50m. Neglecting air resistance determine the maximum height it reached from the ground.[g=10ms^2]

24. ## physics

A long, vertical, straight wire carries a current I going upwards. The wire is perpendicular to the plane of a circular metal loop and passes through the center of the loop. The loop is allowed to fall and maintains its orientation with respect to the

25. ## precalculus

A bacteria culture initially contains 1500 bacteria and doubles every half hour. a) Find an expression for the number of bacteria after t hours. Q(t)= b) The number of bacteria after 20 minutes is (the answer must be an integer) c) The number of bacteria

Multiple Choice 1. Which sphere of the Earth system contains all living organisms? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following statements best describes the geosphere? (1 point) the sphere that consists of solid rock

27. ## word problems

In certain deep parts of oceans, the pressure of sea water, in pounds per square foot, at a depth of d feet below the surface, is given by P=16+7d/11 If a scientific team uses special equipment to measures the pressure under water and finds it to be 646

28. ## Physics

Three boxes are lined up so that they are touching each other as shown in the figure below. Box A has a mass of 30.0 kg, box B has a mass of 45.0 kg, and box C has a mass of 75.0 kg. An external force (F) pushes on box A toward the right, and the force

29. ## MATH

The height h (in meters) of a cannonball t seconds after it is fired into the air is given by h=-4t^2+16t+9. a) What is the initial height of the cannonball? What feature does this correspond to on the graph? b) Find the height of the cannonball after 1

30. ## science help plzzz

Multiple Choice 1. Which of the following images shows a living organism interacting with a biotic factor in its environment? (1 point) bird drinking water koala eating leaves plant in the Earth whale in the ocean 2. Which of the following shows the

31. ## college chem

. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS,

32. ## science help plzzz

1. Which of the following statements best defines tides? (1 point) when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours the rise of ocean water that occurs 12 times a day a giant wave

33. ## Chemistry

What is the ph of 2.5 M solution of HClO4?

34. ## organic chem

7. An unknown compound, C8H14, is optically active. Hydrogenation of the unknown yields 4-methylheptane. Ozonolysis of the unknown yields ethanol and 2- methylpropandial. Suggest a structure for the unknown consistent with the above date. please help

35. ## Algebra

Julie went to the post office and bought both \$0.41 stamps and \$0.26 postcards. She spent \$51.40. The number of stamps was 20 more than twice the number of postcards. How many of each did she buy? I just want to know how to set it up.

36. ## Math

Mrs Harvey Wants To Put a 50 m Long Fence around Her Rectangular Garden. She Only Needs To Fence In 3 Sides Because The Other Side Is Alongside Her House. (a) Write an Expression For y In Terms of x (b) Write an Expression For The Area ( A ) Of The Garden

Multiple Choice: 1. If a kestrel eats a mouse that eats grass, the kestrel is a (1 point) producer. second-level consumer. first-level consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but

38. ## geometry

The Polygon Angle-Sum Theorem states the following: The sum of the measures of the angles of an n-gon is ____. (1 point) (n – 1)180o (n – 2)180o 9. What is the measure of one angle in a regular 16-gon? (1 point) 2,520o 202.5o 157.5o 78.75o 10. The

39. ## physics

A -4.0UC charge is located 0.45m to the left of a +6.0uc charge. what is the magnitude and direction of the electrostatic force on the positive charge?

40. ## Physics

Hey, it's me again, Can someone help me with this question? A water balloon is dropped from the top of a building. Assume the balloon does not break when it strikes the ground. If the water balloon falls a distance of 21m, what is the maximum temperature

41. ## Precalculus

The bacteria in a 8-liter container double every 2 minutes. After 55 minutes the container is full. How long did it take to fill a quarter of the container?

42. ## algebra

In a card game player get at the start 2 green cards, 3 blue cards, 4 red cards, and 3 yellow cards. In how many ways can the player get cards at the start if this card game has 7 green, 7 blue, 10 red and 10 yellow cards?

43. ## math

Find the area of the region enclosed between y=2sin(x) and y=3cos(x) from x=0 to x=0.7π. Hint: Notice that this region consists of two parts.

Macario is making 12 pounds of nut mixture with macadamia nuts and almonds. macadamia nuts cost \$9 per pound and almonds cost \$5.25 per pound. how many pounds of macadamia nuts and how many pounds of almonds should macario use for the mixture to cost \$6.50

45. ## Math

The figure below shows a shaded circular region inside a larger circle: A shaded circle is shown inside another larger circle. The radius of the smaller circle is labeled as r and the radius of the larger circle is labeled as R. On the right side of the

46. ## math

How much money must Andrea invest for 2 years in an account that earns an annual simple interest rate of 8% if she wants to earn \$500 from the investment?

47. ## Physics

A ball is dropped from a roof of a building and strikes the ground in 3 seconds. If a second ball is thrown horizontally from the roof, it will hit the ground in:

A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = -4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point

1)how would the accuracy of your determined keq change if all your volume measurements were made with graduated cylinders rather than pipets ? 2) if all of the SCN^- was not converted completely to FeNCS^2+ when the calibration curve was prepared would

50. ## Chemistry I

In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the

a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

52. ## physics

A step-down transformer has a turns ratio of 1:10 and its primary is connected across the terminals of a standard 120 V wall socket. A 330 ohm resistor is connected across the secondary of this transformer. What power P is dissipated in the resistor?

53. ## Math

Find how much interest \$25,000 earns in 4 years in a certificate of deposit paying 8.5% interest compounded quarterly.

54. ## math

a square photo display is made up of 60 rows of 60 photos each. the area of each square photo is 4 square inches. how long is each side of the display board?

55. ## Physics

A body A of a mass 0.16 kg exerts a force of 6.2x10^-10 N on a body B when the distance between their centers is 0.37 meters. What is the mass of body B?

56. ## Help me with this math ms sue.

Multiple Choice 1. Calculate the slant height for the given cone. Round to the nearest tenth. cone (1 point) 10.2 cm 11.4 cm 9.8 cm 12.0 cm 2. Calculate the slant height for the given cone. Round to the nearest tenth. cone (1 point) 11.2 cm 12.5 cm 14.8 cm

57. ## Science help ms sue.

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

58. ## Marketing

Which of the following best describes a target market? a. a business-to-business market b. a group of people most likely to become customers c. a group of people most likely to have the same interests d. a company's market share I couldn't find much info

59. ## Math

Use Mathematical Induction to show that the statement 2 + 6 + 10 + . . . + (4n – 2) = 2n^2 is true

60. ## Chemistry

when 0.154 g of sulfur is finely grounded and melted with campor, the freezing point of the campor is lowered by 5.47 celsius. A)what is the molecular weight of sulfur? B)what is its molecular formula? fp of campor: 178.4 kf of campor: 40

61. ## computer science

a bank charges \$10 per month plus the following check fees for a commercial checking account: \$.10 each for fewer than 20 checks \$.08 each for 20-39 checks \$.06 each for 40-59 checks &.04 each for 60 or more checks write a program that asks for the number

62. ## algebra

Solve using elimination. 2x + 6y = 6 2x + 3y = 12

63. ## Math

In a Canadian Football League game, the path at one particular kick-off can be modelled using tge function h(d)=-0.02d^2+2.6d-66.5,where h is the height of the ball and d is the horizontal distance from the kicking team's goal line,both in yards. A value

64. ## math

Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO CHOSE: A) NEITHER B) INVERSE

65. ## Chemistry

Burning 2.00 mol of hydrogen releases 483.6 kJ of energy. Determine how much energy, in kilojoules, must be supplied to convert 5.00 mol of water vapor into hydrogen gas and oxygen gas.

66. ## Math Question

What is the 50th term of the sequence that begins -6,0,6,12? 292 288 286 290

Evaluate the indefinite integral. integral 2e^(2x)sin(e^2x) Note: Use an upper-case "C" for the constant of integration.

68. ## Algebra

Estimate the square root. Round to the nearest integer. √242 What I got was 58,584 is this correct?

69. ## Trig

sin^4t-cos^4t/sin^2t cos^2t= sec^2t-csc^2t i have =(sin^2t+cos^2t)(sin^2t+cos^2t)/sin^2tcos^2t then do i go =(sin^2t+cos^2t)/sin^2tcos^2t stumped

70. ## Chemistry

A solution of H2SO4 with a modal concentration 6.25m has a density of 1.300 g/ml. What is the molar concentration?

71. ## Chemistry

x+y=9.0 0.50x+0.20y=3.90 What is the value of x and y?

72. ## 3rd grade shurley english

what does s, f,scs, scv mean when indentifying(labeling) sentences thanks

73. ## Physics

A proton is at the origin and an electron is at the point x = 0.41 nm, y = 0.36 nm. Find the electric force on the proton. I got 7.529 *10^-11 but it wants the answer for fx and fy how do i get that?

74. ## Math

Solve the following problem taken from Treviso Arithmetic, a math textbook published in 1478 by an unknown Italian author: A man finds a purse with an unknown number of ducats in it. After he spends 1/4, 1/5 and 1/6 of the amount, 9 ducats remain. It is

75. ## Math

Nataly is considering two job offers. The first job would pay her \$83,000 per year. The second would pay her \$66,500 plus 15% of her total sales. What would her total sales need to be for her salary on the second offer be higher than the first?

Let logb 2=2.217 and logb 3=3.417. Find logb 3b Please walk me through this steo by step.

77. ## Algebra

The path of a diver is given by y=-4/9 x^2 + 24/9x +12 where y is the height (in feet) and x is the horizontal distance from the end of the diving board (in feet). What is the maximum height of the diver?

78. ## Math (Trig)

Rewrite the following expression in terms of tan3x: (sin2x + sin4x)/(cos2x + cos4x)

79. ## Physics

How to solve? 2. A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following: a. What is the angular velocity of

A cube has 8 vertices, 12 edges, and 6 square faces. A soccer ball (also known as a buckyball or truncated icosahedron) has 12 pentagonal faces and 20 hexagonal faces. How many vertices and how many edges does a soccer ball have? A circular table is placed

81. ## Language arts help!!

1–6, read the play excerpt below and answer the questions that follow. Jaws of the Water ACT TWO At rise we see DAD, TINA, and MARK rushing in and out of the living room. Each enters carrying important items—such as sleeping bags, rain gear, and

82. ## PLZZ HELP ME WITH THIS MATH MS SUE.

4. For the pair of similar solids, find the value of the variable. cylinders (1 point) 3 cm 18 cm 16 cm** 2 cm 5. For the pair of similar solids, find the value of the variable. pyramids (1 point) 12 mm 48 mm** 20 mm 3 mm ARE THESE CORRECT?

83. ## Physics

Which statements about traveling waves are TRUE? Choose all that apply. a) A traveling wave transfers energy from one point to another. b) A speaker that beams its sound forward into a small area produces a louder sound. c) The rate at which a wave

84. ## Physics

Two uniform solid spheres have the same mass of 3 kg, but one has a radius of 0.25 m while the other has a radius of 0.8 m. Each can rotate about an axis through its center. (a) What is the magnitude τ of the torque required to bring the smaller sphere

85. ## Math (Geometry)

1. A rhombus has an area of 5 square meters and a length of 3 meters. In a similar rhombus, the length of a side is 9 meters. What is the area of the second rhombus? [Area= diagonal1 X diagonal2 / 2]

86. ## Algebra 2

Objective Function: C = 6x – 4y

87. ## physics

the elecric potential at a certain point is space is 12 V. What is the electric potential energy of a -3.0uc charge placed at that point? is it +36uj?

88. ## Pre Calculus

find all solutions of the equation 1. x^3+27=0 2. x^3-8=0

89. ## Chem

A lake may be polluted with Pb2+ ions. what precipitation reaction might you use to test for the presense of Pb2+?

90. ## Chemistry

When 1.187g of a metallic oxide is reduced with excess hydrogen, 1.054g of the metal is produced. How do you determine what the metal oxide is?

91. ## College Physics

A 7.00 g bullet, when fired from a gun into a 1.00 kg block of wood held in a vice, penetrates the block to a depth of 8.00 cm. If the block had instead been at rest on a frictionless horizontal surface, to what depth would the bullet have penetrated?

92. ## math

the edges of 3 cubes are consecutive odd intergers. if the cubes aer stacked on a desk as shown, the total exposed surface area is 381. find the lenths of the sides of the cubes thanks!!

93. ## Math

If the code generator polynomial is g(x) = 1 + x^2 for a (5,3) code, find the linear block code generator matrix G.

94. ## derivatives

Explain how a long stock and long put strategy equals the cash flow from a long call strategy.

95. ## Physics

A -3.5uC charge experiences a 13 ihat-N electric force in a certain electric field.What force would a proton experience in the same field? I got -7.28*10^-18 from (1.6*10^-19)(-45.5) I got -45.5 from multiplying 13 by -3.5 What am I doing wrong?

96. ## biology

What will happen when you mix saliva, water, gelatin? Then, mix starch, water, iodine?

97. ## Math

. Vern sold his 1964 Ford Mustang for \$55,000 and wants to invest the money to earn him 5.8% interest per year. He will put some of the money into Fund A that earns 3% per year and the rest in Fund B that earns 10% per year. How much should he invest into

98. ## English

Which statement is NOT true about sentence fragments? A. They do not have a subject, but they have a predicate. B. They do not have a subject and a verb. C. They do not form a complete thought. D. Adding other words makes the fragment a complete sentence.