# Questions Asked onSeptember 28, 2014

1. ## friction

A 40 kg slab rests on a friction less floor.a 10 kg block rests on top of the slab.the coefficient kinetic friction between the block and the slab is 0.40.a horizontal force of 100N is applied on the 10 kg block.find the resulting acceleration of the slab.

2. ## English grammar

Two hundred rupees (are/ is) are a lot of money. Ali along with his brother ( go / goes) goes to the shop. My aunt or my uncle ( is / are) is expected today.

asked by ENGLISH - RIYA ??????
3. ## physics

A grasshopper jumps a horizontal distance of 1m from rest, with an initial velocity at a 45 degree angle with respect to the horizontal. Find the initial speed of the grasshopper and the maximum height reached.

4. ## science

Which of the follow comparisons would be an inaccurate analogy between prokaryotic cells and eukaryotic cells? A - A eukaryotic cell is like a college campus was a prokaryotic cell is like a one-room schoolhouse B - A eukaryotic cell is like a flip phone

5. ## chemistry

Balance following oxidation reduction reactions using oxidation states method? a) Cl2(g) + Al(s) --> Al3+(aq) + Cl- b.) O2(g) + H2O(l) + Pb(s) --> Pb(OH)2(s) c) H+(aq) + MnO4-(aq) + Fe2+(aq) --> Mn2+(aq) + Fe3+(aq) + H2O(l)

6. ## AP Calc. AB

1.If an arrow is shot upward on the moon with a velocity of 50 m/s its height (in meters) after t seconds is given by H = 50t - 0.66t2. With what velocity will the arrow hit the moon? a. -49.5 b. -47 c. -50.1 d. -50 e. -51 2.If an arrow is shot upward on

7. ## Calculus Maxima/Minima

An automobile traveling at the rate of 30 ft/sec is approaching an intersection. When the automobile is 120 ft. from the intersection, a truck, traveling at the rate of 40 ft/sec on a road at right angles with the automobile’s road crosses the

8. ## Chemistry

Aluminum sulfate reacts with calcium hydroxide (from lime) to form aluminum hydroxide and calcium sulfate. Write the balanced formula unit equation for the reaction.

9. ## chemisrt

The hemoglobin content of blood is about 15.4g/100mL blood. The molar mass of hemoglobin is about 64500 g/mol, and there are four iron (Fe) atoms in a hemoglobin molecule.Approximately how many Fe atoms are present in the 6 L of blood in a typical adult?

10. ## maths

When a cake is removed from an oven its temperature is measured at 300 degree F. Three minutes later its temperature is 200 degree F. How long will it take to cool off to a room temperature of 70 degree F?

11. ## Fractions

Jodi is cutting out pieces of paper that measure 8 1/2 inches by 11 inches from a larger sheet of paper that has an area of 1,000 square inches. 1)What is the area of each piece of paper that Jodi is cutting out? 2)What is the greatest possible number of

12. ## History

which best describes a result of division of labor in early farming communities? A- social roles began to change B- irrigation techniques were developed C- religion began to develop D- wild animals were domesticated My guess is A, but I am not sure. D-

13. ## Chemistry

15.0 mL of 0.30 M sodium phosphate solution reacts with 20.0 mL of 0.23M lead(II) nitrate solution. What mass of precipitate will form?

15. ## Chemistry

During recrystallization, an orange solution of a compound in hot alcohol was treated with activated carbon and then filtered through fluted paper. On cooling, the filtrate gave gray crystals, although the compound was reported to be colorless. Explain why

16. ## Math

The planet Neptune has a radius of 15000 miles and rotates one revolution every 18 hours. What is the linear speed of a point on its equator, in miles per hours?

17. ## Algebra

Kate wants to buy a new bicycle from a sporting goods store. The bicycle she wants normally sells for \$360. The store has a sale where all bicycles cost 5/6 of the regular price. What is the sale price of the bicycle? Please help solve. Thanks

18. ## Chem help

Which reaction of ammonia does not involve the non-bonding pair of electrons on the nitrogen atom? A NH3(g) + CH3I(g) → CH3NH 3+ I –(s) B NH3(g) + HCl (g) → NH4Cl (s) C 2NH3(l) + 2Na(s) → 2NaNH2(s) + H2(g) D 2NH3(aq) + Ag+(aq) → [Ag(NH3)2]+(aq)

19. ## chemistry

how many moles of oxygen are there in 50.0 grams of KClO3? Given: 50.0 g KClO3 Find: ? mol O K= 39.10 g/mol Cl= 35.45 g/mol O= (16.00)x3= 48.00 g/mol Total: 122.55 g/mol KClO3 50.0 g KClO3 x 1 mol KClO3/122.55 g/mol KClO3=0.408 mol KClO3 0.408 mol KClO3 x

20. ## Science

The flask shown here contains 10.0 ml of HCl and a few drops of phenolphthalein indicator. The buret contains 30ml of 0.130M NaOH. What Volume of NaOH is needed to reach the end point of the titration? I've used m1v1=m2v2, (x)(10.0ml HCl) = (0.130 M/L

21. ## discrete distribution

Find the mean and the standard deviation of the number of hours parked. (Round your intermediate values and final answers to 3 decimal places.)

1) Round 578.683 m, 47.3333 kg, and 789.5 cm to four significant figures. 2) Find the weight of a 12.25 kg dog. Round your answer to the correct number of significant figures. Use weight=massxfree-fall acceleration. 3) Round 3155.24m, 8.777 73 cm, and

23. ## Calculus Minima Problems

A small island is 2 km off shore in a large lake .A woman on the island can row her boat 10 km/hr and can run at a speed of 20 km/hr. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. Where should she

24. ## Chemistry

What is the mass of 3.01 x 10^22 iron (II) ions, Fe^2+?

25. ## Math

Julia saw 5 times as many cars as trucks in parking. If she saw 30 total how many were trucks?

26. ## physics

A cube of mass m1 = 7.7 kg is sitting on top of another cube of the same size and mass m2 = 0.6 kg while they are both in free-fall. Ignoring any air resistance, what is the magnitude of the normal force with which the bottom cube is acting on the top

Give an example of an open equation a + b = c + d How can you use an equation to make a prediction from a pattern? (i don't know) pizza costs \$1.50 per slice. Use a table and an equation to represent the relationship between the number of slices of pizza

Question: a garden snail moves 1/6 foot in 1/3 hour. This is unit rates. Please help, I don't get this lesson!

29. ## Math

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the

30. ## chemistry

What volume of a 0.550 M solution of potassium hydroxide can be made with 18.3 g of potassium hydroxide? (Ignore significant figures for this problem.)

Five concentric circles with radii 1, 2, 3, 4, and 5 are drawn as shown dividing the circle of radius 5 into five regions: a circle of radius 1 and 4 annuuli (rings). What is the probability that a point chosen randomly from within the circle of radius 5

32. ## math

At the movie theatre, child admission is \$5.30 and adult admission is \$8.70 . On Friday, 155 tickets were sold for a total sales of \$1137.70 . How many child tickets were sold that day?

33. ## Physics

Two rocks are thrown simultaneously from the top of a very tall tower with identical speeds of v = 7.70 m/s, but in two different directions.One of them is thrown with an angle of 10.0 degrees below the horizontal, the other one at an angle of 50.0 degrees

34. ## Chemistry

2. The half-life of a radioactive element is important when considering its application in medicine. For example, iodine-131 is often used in the imaging of the thyroid. The reason is that iodine is readily absorbed by the thyroid gland. Another reason is

35. ## algebra

You are the payroll manager for Euro Couture, a manufacturer of women's apparel. Your workers are paid per garment sewn on a differential piecework schedule as follows. Pay Level Garments Produced Rate per Garment 1 1-50 \$3.60 2 51-100 \$4.25 3 101-150

36. ## chemistry

If He(g) has an average kinetic energy of 7590 J/mol under certain conditions, what is the root mean square speed of F2(g) molecules under the same conditions?

37. ## Physics

A meter stick weighs 200 grams and is supported at the center. Three masses of 100, 200, and 150 grams are placed respectively, at the 10-cm, 20-cm and 60 cm points of the meter stick. To balance the meter stick, where must a 300 grams weight be placed on

38. ## Physics

A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. The ball has a mass m = 0.162 kg and moves at v = 4.73 m/s. The circular path has a radius of R = 0.87 m 1)What is the magnitude of the tension in the

39. ## Physics

A stone is thrown vertically upward from the top of the tower with a velocity of 15m / s. Two seconds later a second stone is dropped from the top of the tower.if both the stone strike the ground simultaneously find the height of the tower

40. ## Algebra

To find the product 3/7 multiplied by 4/9, Cameron simplified 3/7 to 1/7 and then multiplied the fractions 1/7 and 4/9 to find the product 4/63. What is Cameron's error? Please help answer thanks

41. ## Physics

A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. The ball has a mass m = 0.162 kg and moves at v = 4.73 m/s. The circular path has a radius of R = 0.87 m 1)What is the magnitude of the tension in the

42. ## unit rates

Julio walks 3 1/2 miles in 1 1/4 hours

43. ## Chemistry

Use half-cells to balance the following redox reaction, and label the oxidation and reduction half-reactions. Also, note that bromide is a spectator ion and can be eliminated. FeBr(aq) +Mg(s) = Fe(s) + MgBr2(aq) Fe^+2 -2e +Br^- e+ + Mg^+2 -2e =Fe^+2 -2e

44. ## Chemistry- colligative properties

Which of the following aqueous solution of equal molality has the lowest freezing point? a. H2SO3 b. NaCl c. NaOH d. Ca(NO3)2 How do you answer this without looking at their i values from textbooks? I know that delta(Fpt) = m * K,f * i and that i is

45. ## Need help badly, Science

Suppose the incident sunlight at ground level has a power density of 0.87 kW m−2 at noon. What is the maximum rate of loss of water from a lake of area 1.0 ha? (1 ha = 104 m2.) Assume that all the radiant energy is absorbed. any ideas on how do i get

46. ## Algebra

Adding and subtracting polynomials. Can someone help me solve this problem? 5x^3 . 2x^2 - 10x^4 + 3x^5 + 3x .(-2)x^4 . = The dot means to multiply. Thank you.

47. ## college

The density of an alloy is 5000 kg/m3. What is the density in g/cm3?

48. ## Physics

A swimmer, capable of swimming at a speed of 1.44 m/s in still water (i.e., the swimmer can swim with a speed of 1.44 m/s relative to the water), starts to swim directly across a 2.21-km-wide river. However, the current is 0.840 m/s, and it carries the

49. ## Earth science

A sphere was dropped into water in a graduated cylinder as shown in the following diagram.The water level rose th the new level shown .What is the volume of the sphere

50. ## Material Sciences

The molar crosslink density of a rubber is measured to be 468mol/m3 for a temperature T=300K. What is the Young's modulus of the rubber in MPa? What happens to the modulus of the rubber when the temperature is increased? Young's modulus decreases Young's

51. ## Algebra 2

Two woodworkers, Tom and Carlos, bring in \$100 for making a table and \$80 for making a chair. On average, Tom must work 3 hours and Carlos 2 hours to make a chair. Tom must work 2 hours and Carlos 6 hours to make a table. If neither wishes to work more

52. ## math/ unit rates

A fertilizer covers 5/8 square foot in 1/4 hour.

53. ## Redox equation

ZnOH4^2- --> ZnO2^2- + 2H2O What is the oxidation agent, reducing agent, substance oxidized, and substance reduced? Well, Zn isn't changed either way, so the OH is the only factor left here... I simplified ZnOH4^-2 --> ZnO2^2- and 2HOH, but still I'm not

54. ## stat

According to 2010 UCR data, Oakland, CA has a murder rate of 22.0 (per 100,000) in 6th place, Washington, DC has a murder rate of 21.9 in 7th place, and Kansas City, MO has a murder rate of 21.1 in 8th place. If we looked at all U.S. cities with a

55. ## math/ unit rates

A garden snail moves 1/6 foot in 1/3 hour

56. ## Chemistry

A .7178 g sample of a hydrocarbon occupies a volume of 390.7 mL at 65C and 99.2kpa. When the sample is burned in excess oxygen, 2.4267 g CO2 and .4967g H2O are obtained. What is the molecular formula of the hydrocarbon? Write a plausible structural formula

57. ## Heath help Plz--5 questions

1. A percentile rank represents the percentage of people who scored at or below the test score. True** False 2. People who have high resting heart rates usually have high levels of cardiovascular fitness. True ** False 3. Resting heart rate is usually

58. ## geometry

Two circles which are not congruent touch externally. the sum of their area is 130¦Ðcm.square and distance between their centers is 14 cm. find radii of circles.

A student swims at 4m/s. She is swimming from west to east across a river that's is flowing 2.2m/s [S]. A) if the river is 100 m wide, what is the quickest time that she can swim the entire width? B) how far downstream will she be? C) if she decides to go

60. ## math

Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from

61. ## physics

A small relief package is dropped by a helicopter that is descending steadily at 2.0 m/s. a) After 2.5 s, what is the speed of the relief package? b) After 2.5 s, how is the package below the helicopter? I think I need to use the kinematic equations.

62. ## physics

A football is kicked off with an initial speed of 65 ft/s at a projection angle of 45 degrees. A receiver on the goal line 63 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in

63. ## physic

As discussed in Example 4-7, the archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. Suppose the archerfish squirts water with a speed of 1.4 m/s at an angle of 50.0° above

64. ## physics

A hunter wishes to cross a river that is 1.0 km wide and that flows with a speed of 4.9 km/h. The hunter uses a small powerboat that moves at a maximum speed of 9.6 km/h with respect to the water. What is the minimum time necessary for crossing?

65. ## Chemistry

GE's light bulb division ordered 100.kg of tungsten for the filaments. If the tungsten comes in a cube what is the volume of the cube? What is the length of each side?

66. ## Chemistry

What mass of ammonium nitrate is require to produce 145L of N2O at 2850 torr and 42 degree celcius

67. ## Physics

Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from

68. ## Physics

Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from

69. ## Pre-Calc/Trig

Help Please Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9

70. ## physics

Car a starts from rest and speeds up with constant accelleration until it reaches its max speed. Car b starts from rest, at the moment car a is at max speed, and speeds up with constant acceleration. How much time elapses between when car b starts moving,

71. ## chemistry

If He(g) has an average kinetic energy of 7590 J/mol under certain conditions, what is the root mean square speed of F2(g) molecules under the same conditions?

72. ## biology

Which of the follow comparisons would be an inaccurate analogy between prokaryotic cells and eukaryotic cells? A - A eukaryotic cell is like a college campus was a prokaryotic cell is like a one-room schoolhouse B - A eukaryotic cell is like a flip phone

73. ## World History Answer Check

1. What was the overall effect of Napoleon's Civil Code? A: The overall effect of Napoleon's Civil Code was to erode the remnants of the feudal system by further weakening the traditional power of the nobility and clergy. 2. Why did being a sea power help

74. ## trigo

A pendulum of length 10 cm has swung so that theta is the radian measure of the angle formed by the pendulum and a vertical line .Show that the number of centimeters in the vertical height of the end of the pendulum above its lowest position is 20 sin

75. ## computer

you need to access the registry on your windows 7 computer.how do you do this ?

76. ## geometry

In triangle ABC, AB=5 cm, BC=12 cm and angle ABC=90 degree, calculate the length of AC.

77. ## Physics

A robot probe drops a camera off the rim of a 429 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2. What equation will be appropriate to find velocity?

78. ## writing/ macolm

What new life did Malcolm pursue i n Roxbury, Massachusetts? What changes were visible in Malcolm’s clothing? What were the most negative consequences f or Malcolm in choosing that lifestyle? During his incarceration, what did Malcolm do?

79. ## physics

To tighten a bolt, you push with a force of 84N at the end of a wrench handle that is 0.24m from the axis of the bolt. If you move your hand inward to be only 0.10 m from the bolt, find the force that you should exert to achieve the same torque.

80. ## Physics

A student swims at 4m/s. She is swimming from west to east across a river that's is flowing 2.2m/s [S]. A) if the river is 100 m wide, what is the quickest time that she can swim the entire width? B) how far downstream will she be? C) if she decides to go

81. ## physics

A Student drops a rock from a bridge to the water 14.7m below. with what speed does the rock strike the water? the acceleration of gravity is 9.8 m/s^2. andswer in units of m/s.

82. ## physics

A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 118 km away. The radar antenna is pointing upward at an angle of 58.2 ° above the ground. Find (a) the x and (b) the y components (in

83. ## Geometry

A swimming pool is to be constructed in the space of partially overlapping identical circles. Each of the circles has a radius of 9 m, and each passes through the center of the other. Find the area of the swimming pool.

84. ## statistics

a test consists of 10 true or false questions followed by 10 multiple choice questions, each with 5 choices. How many ways can Faith mark her answer to this test?

85. ## Calculus

A small island is 2 km off shore in a large lake .A woman on the island can row her boat 10 km/hr and can run at a speed of 20 km/hr. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. Where should she

86. ## World History

Where did farming first develop? A.Southwest Asia B.southeastern Europe C.India D.China I think it is A. Am i correct?

87. ## physics

A person whose mass is m = 60.5 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the angle α = 31.7° with the horizontal. What is the reading on the scale? For this question I used the formula FN=mgcostetha= 60.5x9.8xcos31.7

88. ## SCIENCE

A scientist observing a group of spider monkeys noticed that the adult females often spend time picking leaves off of tree branches. The scientist hypothesizes that this behavior is caused by boredom. Is the scientists hypothesis valid? A- no, emotions of

89. ## english

Critical Reading Identify the letter of the choice that best completes the statement or answers the question.The excerpt from Midsummer, XXIII, primarily concerns

90. ## Environmental Science

India’s prime minister puts you in charge of that nation’s population policy. India has a population growth rate of 1.6% per year, a TFR of 2.7, a 49% rate of contraceptive use, and a population that is 71% rural. What policy steps would you recommend,

91. ## physics

To tighten a bolt, you push with a force of 84N at the end of a wrench handle that is 0.24m from the axis of the bolt. What torque are you exerting?

92. ## pre algebra

A cylinder has a circumference of 16pi inches and its height is half the radius of the cylinder? What is the total surface area of the cylinder? Give answer in terms of pi. do not know how to do this....please help

Question: a fertilizer covers 5/8 square foot in 1/4 hour. This is the last unit rates question. Please explain how you got the answer so I can understand this lesson.

94. ## geometry

Point C is in the interior of angle ABD. The measure of angle ABD is 40 degrees. The measure of angle DBC is 3x-5. If angle ABC is 22 degrees, what is "x"?

95. ## Physics

A bullet is fired straight up from a gun with a muzzle velocity of 312 m/s. Neglecting air resistance, what will be its displacement after 1.4 s? The acceleration of gravity is 9.8 m/s 2 .

96. ## History

What is a characteristic of civilization? A- bronze tools and weapons B- an army C- art and literature D- government I don't know whether it's C or D.

97. ## Chemistyr

A 55.29-g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? (Ignore significant figures for this problem.)

98. ## math

Lane French had a bad credit rating and went to a local cash center. He took out a \$100.00 loan payable in two weeks at \$106.00. What is the percent of interest paid on this loan?

99. ## physics

A ball is thrown horizontally at 15 m/s from a clifftop 60 m above the sea level. Find: a) the time to land; b) the angle at which it hits the water; ° below the horizontal c) the speed at which it hits the water. m/s

100. ## chemistry

A sample of unknown metal has a mass of 36.7 g. This metal was placed in boiling water at 96.0oC until the metal had reached the temperature of the water. The metal was then placed in a foam cup with 50.0 g of water in it at 20.0oC. The cup absorbs 42.0

101. ## math

kx^2 + (k+2)x -3 =0 has roots which are real and positive. Find the possible values that k may have. I understand that I have to use the discriminant to solve this, but I can't seem to get the answer right, so I really need help!!

102. ## chemistry

A sample of gas occupies 17mL at -112 degrees Celsius. Assuming the pressure is held constant, what volume does the sample occupy at 70 degrees Celsius?

103. ## physics

A robot probe drops a camera off the rim of a 457 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2. find the time required for the camera to reach the ground. answer in units of s. i don't know if my equation is right: * tfinal= (vinitial

104. ## French: TO MS SUE OR ANY FRENCH HELPER

Please check & correct my mistakes: In English: One day sarah went shopping. Then she walked to her house Unfortunately it started to rain Fortunately sarah had a jacket All of a sudden sarah fell down Finally sarah arrived at her house In French: Un jour

105. ## Understanding Observation and Behavior, Developing

4. To become a successful observer of young children, which of the following techniques is most effective? A. Smile or nod to a child you're observing. B. Let the children know you will be observing them. C. Try to observe each child without being noticed.

106. ## chem

Give the name of the product from complete hydrogenation of each of the following: 2-ethyl-1-hexene

Calculate the cash discount and the net amount due for the following transaction. Amount of Invoice Terms of Sale Cash Discount Net Amount Due \$12,660.00 2/10, n/45 \$ \$

108. ## math

jocelyn got 19 correct answers out of 25 questions on her last test. What percent of the questions did she answer correctly?

109. ## English

I need to turn this into a really good thesis statement . In the myth " When Grizzlies walked Upright" explain how the bears lived in relation to each other before and after the introduction of the female into their clan, and explain how both the bears and

110. ## math

The ratio of the perimeters of two squares is 1:5. If the area of the bigger square is 250m^2, find the perimeter of the two squares

111. ## stats

a hat contains a number od cubes: 15 red, 10 white, 5 blue and 20 black,20 years gone and i am back again. one cube at random. what is the probability that it is: a) a red cube? b) not a red cube? c) a cube that is white or black? d) a cube that is neither

112. ## physics

The figure below shows a train with 3 compartments only. Each of the compartments has a mass of 30 tons . Two of them are motor cars while the other one is a trailer car. Each of the motor cars provides a driving force F. Suppose the train is accelerating

113. ## Math quick question!

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the

114. ## Chem

Use half-cells to balance the following redox reaction, and label the oxidation and reduction half-reactions. Also, note that bromide is a spectator ion and can be eliminated. FeBr3(aq) +Mg(s) = Fe(s) + MgBr2(aq) Fe^+2 -2e +Br^- e+ + Mg^+2 -2e =Fe^+2 -2e

115. ## physic

A ball is launched horizontally at 5 m/s from the top of a 45 m tall building. A man stands at rest 6 m from the base of the building. If there is a 0.3 s reaction time for the man to start moving once he sees the ball launched, find the magnitude of the

An airplane has an air speed of 112m/s [N 20 degrees W] and has a ground speed of 106 m/s [N 25 degrees W]. Find the velocity of the wind.

117. ## medical coding2

does anyone know the answer the this coding question? This 42 Year Old White Male Who Accidentally Injured His Left Finger On A Circular Saw While Working O At Home In His Garagen Broken Shutters

118. ## PROGRAMMING

1. Make a C program that will input two integers and then to enter an option as follows: • 1 = to add the two integers. • 2 = to subtract the second integer from the first. • 3 = to multiply the integers • 4 = to divide the first integer by the

119. ## Math URGENT!!

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the

120. ## math

out of 32 students in a class, 5 said they rode their bikes to school. Based on these results, how many of the 800 students ride their bikes to school?

121. ## Material Sciences

Imagine a container is removed from a hot oven and plunged into cold water. Use your answer from Question 3 to justify which material would be more likely to have better thermal shock resistance. Glass: α=9∗10−6C−1 Pyrex: α=4∗10−6C−1 Which

122. ## PROGRAMMING

Create a C program that contains a function that computes the final price for a sales transaction and return that value to a calling method. The function requires three arguments: product price, salesperson commission rate and customer discount rate. A

123. ## trigo

Can i have a solution on how i can derive on this answer 4cos^3x - 3 cos x.....please..

124. ## math/ unit rates

Kenny reads 5/8 page in 2/3 minute

125. ## CALCULUS

I need to find the unit normal vector given: r(t)= ti + (6/t) j where t= 3 I know I need to find the unit tangent vector first, which is r'(t) divided by the magnitude of r'(t). r(t) can be rewritten as ti+ 6t^-1 r'(t) = i- 6t^-2 = i- [6/ (t^2)] j For the

126. ## Math

A door frame that appears rectangular has height 80 in., width 32 in., and one diagonal that measures 86in. Is the door frame actually rectangular?

127. ## physics

An electron in an atom has a speed of 2.2 × 10^6 m/s and orbits the nucleus at a distance of 5 × 10^-11m.a)What is its centripetal acceleration? b)A neutron star of radius 17 km is found to rotate at 5 revolutions per second. What is the centripetal

128. ## physics

You and your friend are on the roof of a 20 m tall building investigating a free fall. Your friend releases a small rock from rest. You throw another rock simultaneously with your friend aiming it straight down. (a) What initial speed should you supply to

129. ## Chemistry

a 6 g sample of magnesium was burned in a crucible producing 10 g of magnesium oxide. What mass of oxygen reacted with magnesium to form the 10 g of magnesium oxide?

130. ## Chemistry

A Power plant rated at 800 MegaWatts generates steam at 585 K and discards heat to a river at 295 K. If thermal efficiency of plant is 70% of maximum value, how much heat is discarded to river at rated power? Please help with steps on how to solve this

131. ## Life orientation

Provide five or more ways in which you critically discuss how lifestyle on substance abuse impact on the teenagers

132. ## Physics

A freight train has a mass of 1.3 x10^7 kg. if the locomotive can exert a constant pull of 5.4x10^5 N, how long would it take to increase the speed of the train from rest to 71 km/h? Disregard friction. Answer in units of s.

133. ## world history

Where did farming first develop? F.Southwest Asia G.southeastern Europe H.India I.China I think it is g but not sure. Is that correct???

134. ## Physics HELP

A ball is thrown horizontally at 15 m/s from a clifftop 60 m above the sea level. Find: a) the time to land; b) the angle at which it hits the water; ° below the horizontal c) the speed at which it hits the water.

135. ## statistics

The police department of a major city has found that the average height of their 1,250 officers is 71 inches (μ = 71 in.) with σ = 2.3 inches.

136. ## physics

An electron, starting from rest and moving with a constant acceleration, travels 5.8 cm in 14 ms. What is the magnitude of this acceleration? Answer in units of km/s2

137. ## English

What does in relation to something mean? Can you give me an example?

138. ## Chemistry

A 55.29-g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? (Ignore significant figures for this problem.)

139. ## chemistry

What is the molar concentration of all ions present in a solution prepared by mixing the following? Assume that volumes of the solutions are additive, and neglect H+ and OH- from water. 60.0 mL of 0.25 M KCl and 80.0 mL of 0.85 M NaOH.

140. ## geometry

In triangle ABC, ab=5 cm, BC=12 cm and ABC=90 degree, calculate the length of AC.

141. ## Physics

A ball is thrown at 41° below the horizontal from a rooftop of height 65 m. It lands 2 s later. Find: Find: a) its initial speed b) the point of impact with the ground; m from the base of the building c) the angle at which it hits the ground. ° below the

142. ## physics

A car is moving with a velocity od 10.1m/s [N] while on a ferry that is moving across a lake.if an observer on shore measures the velocity of the car to be 29m/s [N] how quickly is the ferry moving?

143. ## Physics

A small, single engine airplane is about to take off. The airplane becomes airborne, when its speed reaches 117.0 km/h. The conditions at the airport are ideal, there is no wind. When the engine is running at its full power, the acceleration of the

144. ## chemistry

heat lost by metal + heat gained by water = 0 [mass metal x specific heat metal x (Tfinal-Tinitial)] + [mass water x specific heat water x (Tfinal-Tinitial)] = 0 Substitute and solve for specific heat metal.

145. ## chemistry

Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction. 3SO2(g) + 3H2O(g) + 3/2O2(g) --->3H2SO4(l) ΔH = ?

146. ## public speaking

Medium that carries message signals from senders to receivers of communication is

147. ## algebra

as part of her training routine for basketball, shaylle alternates between cycling and running for exercise. she cycles at a rate of 14 mph and runs at a rate of 8 mph. if she spends 8.5 hours exercising and covers a total of 101 miles, how much time did

148. ## physics

A motorcycle has a constant speed of 21.6 m/s as it passes over the top of a hill whose radius of curvature is 100 m. The mass of the motorcycle and driver is 392 kg. Find the magnitude of (a) the centripetal force and (b) the normal force that acts on the

149. ## Geography

How does location affect climate?

150. ## chemistry

The structure of tryptophan is shown at the right along with the pK values of the α-carboxyl and α-amino groups. (pK1=2.38; pK2=9.39) Tryptophan is a diprotic acid which can exist in three protonated forms: H2A , HA0, and A–. (HA0 consists primarily of

151. ## physics

An airplane has an air speed of 112m/s [N 20 degrees W] and has a ground speed of 106 m/s [N 25 degrees W]. Find the velocity of the wind.

152. ## chemistry

Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction. 3SO2(g) + 3H2O(g) + 3/2O2(g) --->3H2SO4(l) ΔH = ?

153. ## Algebra

How do I simplify this problem. (2nr - nr^2)r - (2nr - nr^2) . 2r

154. ## Find the pattern problem solving

I was watching the street, there were mopeds(2 wheels) bikes(2 wheels), tricycles(3 wheels), taxis(4 wheels) and big trucks(6 wheels). I counted as they went past a total of 60 in 5 minutes. I notice the following about the vehicle. Every second was a

155. ## physics

A rocket blasts off from rest and attains a speed of 59.4 m/s in 14.1 s. An astronaut has a mass of 66.7 kg. What is the astronaut's apparent weight during takeoff?

156. ## English

I'm sorry but after asking for help and looking up several websites on how to write a really good thesis statement, I don't think I can make one. So I am asking can you please help me by writing it. I tried but I came up with three terrible ones. In

157. ## math

Write 4 names for 8? This is 2nd grade homework.

158. ## Problem solving

I was watching the street, there were mopeds(2 wheels) bikes(2 wheels), tricycles(3 wheels), taxis(4 wheels) and big trucks(6 wheels). I counted as they went past a total of 60 in 5 minutes. I notice the following about the vehicle. Every second was a

159. ## Economics

There are two brothers, Joe and Marc who both like candy. When Joe shops he always spends \$10 on candy When Marc shops he always buys 10 pieces of candy. What is Joe's elasticity of demand for candy? Why? What is Marc's elasticity of demand for candy? Why?

160. ## statistics

c. The top 10% of the officers in terms of height also make higher salaries than the shorter officers. How tall does an officer have to be to get in that top 10% group? (I.e. what is the height marking off the top 10 percent?)

161. ## Estimating Quotients

Carl needs to estimate the quotient 547÷92. Explain how Carl could use compatible numbers to make a reasonable estimate.

162. ## statistics

past history indicates that an average of 1.2 calls are received per minute. What is the probability of 3 or more calls per minute

163. ## math

how do I solve 28 - 9x = -12 - 11x I tried adding 9x to both sides adding 11x to both sides and doing a million different methods and after i got an answer I went to check it and it was wrong I really don't understand how to do these types of equations

164. ## IT

Make a C program that accepts an integer value at the main method from the keyboard and in turn passes the value to a function that squares the number( multiplies is by itself) and to another function that cubes the number ( multiplies by itself twice).

165. ## chemistry

I what this question to be solve.what will be the pressure of 50cm^3 of oxygen gas in a piston initially at a pressure of 2atm when the volume was 500cm^3 at a steady temperature of 300k

166. ## PROGRAMMING

Make a C program that accepts an integer value at the main method from the keyboard and in turn passes the value to a function that squares the number( multiplies is by itself) and to another function that cubes the number ( multiplies by itself twice).

167. ## Pre-Calculus

1.) Find (f - g)(x) if f(x) = 2x - 5 and g(x) = 4. 2.) Given f(x) = 4 and g(x) = 2x - 1, find (f - g)(x). Thanks so much! :)

168. ## To ANY SCIENCE HELPER URGENT

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Please this is very urgent, I have finished everything else but these r my last 2 questions that I don't know! Please help! Thanks:)

169. ## community policing

At the turn of the century, a new management technique was developed by Frederick Winslow Taylor, which would later be applied to policing. What is the name of the management style? strategic management, is this right thanks

170. ## Physics

A force F acts to the right on a 4.81 kg block. A 2.53 kg block is stacked on top of the 4.81 kg block and can slide on it with a coefficient of friction of 0.2 between the blocks. The table has a coefficient of friction of 0.23. The acceleration of

171. ## Economics

What happens to the cash flow statement for a company operating on a calendar year when a sale is made in December but the firm isn’t paid until the following January?

172. ## physics

An electron in the cathode ray tube of a tele- vision set enters a region where it acceler- ates uniformly from a speed of 30100 m/s to a speed of 3.82 × 106 m/s in a distance of 2.97 cm. What is its acceleration? Answer in units of m/s2

173. ## PHI208

1. Noddings claims that care ethics does which of the following? Focuses on ways to justify war Focuses on ways to combat war Focuses on events as they are and as they occur Focuses on rules that govern morality 2. According to Friedman, this is a typical

174. ## Physics

Which of the following are the correct units for mass? Tons, u, g, slugs, dyn, lb, oz, kg I put g, slugs, and kg but got it wrong. What part do I have wrong?

175. ## Finite

Assume that the producer has 7 skits and 5 commercials available. Skits can't be repeated, commercials can.

176. ## To ANY SCIENCE HELPER

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Thanks:)

177. ## statistics

If a fair die is rolled, what is the probability of getting an even number, a number less than 5, a number larger than 6 and an odd number?

178. ## Math

A park ride will make 120 revolutions in 160 seconds, at this rate how many revolutions will it make in 40 seconds

179. ## algebra 1 question

Solve. 3/2 x - 4 = 16 x = 20 x = 13 1/3 x = 15 1/3 30 i got x = 16 and in decimal form 13.333 and even others! I'm going for 13 1/3 or 15 1/3. Help?

180. ## trigo

Obtain an identity for the first function value in terms of the second function value. cos 3x ; cos x

181. ## trigo

Use a half measure identity to find the exact value.. Cos t= 1/3 and 0

182. ## chemistry

21.90 kJ/g x 0.1182 g = ?q = energy obtained by combusting salicylic acid. Then calculate the heat capacity of the calorimeter. That is q from above = C/degree c x 2.84 and solve for C, the heat capacity of the calorimeter. q = heat capacity x delta T q =

183. ## Physics

A plane with a velocity of 111. 9 meters per second at a maximum rate of 6.8 m/s^2 the plane touches the runaway what's the minimum time before it can come to rest? A=6.8m/s^2 V=111.9m/s t=?

184. ## Math

F(x)=2sin(3x/2-3pi/4)+2

185. ## Math (money)

Brianna spent 1/6 of her money on a movie and \$9 on dinner. If she had \$16 left, how much money did she spend altogether?

186. ## English

What is a preterite? I am very confused on this. Is a preterite something that describes past events? For example, When I was younger, I liked visiting my grandparents house. If so, what would be the preterite in the sentence? Would it be younger?

187. ## World History

Why was Anne-Louise-Germaine de Staël significant? A: ?

188. ## geometry

The volume of the rectangular prism is 280 cubic cm. Its base has the area of 40 sq. cm. What is the volume of the pyramid inside the prism?

189. ## Physics

An electron in an atom has a speed of 2.2 × 10^6 m/s and orbits the nucleus at a distance of 5 × 10^-11m.a)What is its centripetal acceleration? b)A neutron star of radius 17 km is found to rotate at 5 revolutions per second. What is the centripetal

190. ## english

what does this quote mean "we're not the bogeyman we're made out to be" and what topic of fear can this be related to?

191. ## religion

who do members of the Jesuit Volunteer Corps work for?I need help,been stuck on this question for,like,15 minutes,I've been searching the internet for 20 minutes.

192. ## physics

You and a friend stand on a snow-covered roof. You both throw snowballs from an elevation of 18 m with the same initial speed of 11 m/s, but in different directions. You through your snowball downward, at 40° below the horizontal; your friend throws her

193. ## math.help pls

find the limit if f((8+h)-f(8))/h .if f(x)= (472-2 x^2)^1/3.

194. ## physics

A slowly moving train with 15.0- m-long flatcars is passing a station at 11.0 km/h. A person on the station platform tosses rocks onto the moving flatcars at the rate of one every second. If the first rock just hits the front edge of one car, how many

195. ## math

if all the numbers from 1 to 2013 are written down how many of these will have two or more zeroes next to each other

196. ## Physics

an object is located a distance d above the surface of a large planet of radius r. at this position, its true weight is one percent less than its true weight on the surface. what is the ratio of d/r?

197. ## geometry

The volume of the rectangular prism is 280 cubic cm. Its base has the area of 40 sq. cm. What is the volume of the pyramid inside the prism???

198. ## earth science

If the earth was made 4.5 billion years ago, how comes we don't have any craters or rocks from that time?

199. ## Chem

Then, determine the final volume needed to dilute 20.0 ml of 1.00 M NaOH to 0.25 M. Next, find the volume of water which needs to be added. Finally, determine the moles and the mass in grams of NaOH in the solutions. Final volume formula is Vf= mi/mf 20

200. ## Calculus

What is the derivative of y=2^x?

201. ## physical

A robot probe drops a camera off the rim of a 230 m high eliff on Mars where the free fall acceleration is 3.7 m/s^2. Find the velocity with which it hits the ground.

202. ## English

In the myth "When Grizzlies Walked Up Right" explain how the bears lived in relation to each other before and after the introduction of the female into their clan. Please help me

203. ## Geometry

I keep getting the same answer but it is wrong. How do I work this? M is the midpoint of AB. The coordinates of A are (-4, -2) and the coordinates of B are (9,-6). What are the coordinates of M?

204. ## English

I need to create a diagram of hell similar to Dantes Inferno. What punishments would teach the following sins a lesson: Liars Thieves Cheaters Abusers Kidnappers Traitors Murderers Fraudsters Assualters

205. ## MATH

Write the equation of a horizontal line that passes through (3, 8). Describe the slope.

206. ## Math

What type of function is f(x)=1.3^x? Also, what type of function is f(x)=(x-5)/(x^2-2x+3)?

207. ## English

Please help with the subject and predicate of the sentence below??? despite news reports to the contrary, manufacturing jobs in the united states are expanding, which is a solid indicator of a growing economy

208. ## philosophy

Was the period of the Renaissance and Scientific Revolution all about "the shock of the new" or was it more about the "recapture of the very old"?

209. ## English

How did the man-made environment Olaudah Equiano was forced into shaped his opinions and perspectives towards the first white men he encountered?

210. ## PROGRAMMING

Make a C program that will generate the output below using the function that will pass the value into the function. 1 4 16 25 36 49 64 81 100

211. ## physics

a tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.0m/s. the car is d distance away. the bear is 26.0m behind the tourist and running at 6.0m/s. the tourist reaches the car safely. what is the maximum

212. ## Chem

Then, determine the final volume needed to dilute 20.0 ml of 1.00 M NaOH to 0.25 M. Next, find the volume of water which needs to be added. Finally, determine the moles and the mass in grams of NaOH in the solutions. Do I take 60 ml and convert it to moles

213. ## trigo

Use a half measure identity to find the exact value.. Cos t= 1/3 and 0

214. ## math

IF IN AN ISOSCELES TRAPEZIUM,DIAGONAL AC=(8X-7)CM AND DIAGONAL BD=(5X+2)CM,THEN FIND THE LENGTH OF AC ?

215. ## Social studies

1. what is the story behind the creation of the Proguoio confecteracy 2. how the early American history democracy was influenced by the Iroquois compare the impact Europeans had on the Iroquois

216. ## history

does a private( rank) in the Canadian army fight in the war? i saw on some sites the duties of a private in the army, but it did not say if they fought in wars. so i was wondering if a private would fight in the war.

217. ## statistics

the manager of a football team works for 310 days per year. of this he spends 42 days looking at new player he might buy. what percentage of his working days is this?

218. ## CHM

we will do a project on this topic ;HPLC with fluorescence detection to quantify the amounts of various preservatives in several kinds of soda. so what can be analyzed ?

220. ## physics

A bullet is fired straight up from a gun with a muzzle velocity of 214 m/s. Neglecting air resistance, what will be its displacement after 8.2 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

221. ## PHI208

Noddings claims that most young men join the military for which of the following reasons? To take part in destruction To kill other humans To find meaning in life They had nothing better to do

222. ## PHI208

In Held’s article it is claimed that 1. Hobbes conceives of humans in the state of nature as Creative creatures who work with one another to establish communities Fully grown and having no ties to any other humans Interested in the well-being of the

223. ## Physics

A projectile is launched upward at 26m/s at 30 degrees from the horizontal. The whole path of the projectile takes place over level ground. How much time will the projectile be in the air?

224. ## Pre-Calc (Point of Inter.)

A diagonal of a cube is a line segment of maximum length whose endpoints are vertices of the cube. To the nearest degree, what is the angle of intersection Ѳ, 0 < Ѳ

225. ## stat

Drawing a spade form a regular deck of playing cards and then drawing another spade from the same deck without replacing the first card is this a independent event?

226. ## Theology 10 HELP!

Things in our world that seems hopeless.

227. ## High school algebra

A scouting report states that Ben throws a ball 88 mph. Determine how fast Ben throws in feet per second

228. ## science 2 quick questions

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? I don't want sites because they don't help, please help me and explain . All my other questions r done but I'm stuck on these 2.

A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron mp=mass of proton=1.673x10^-27 λ=h/mpc(1-cosθ)

231. ## math analysis

i don't know what to start. Given a number espilon >0, prove there exists a natural number x such that 1/x

232. ## Pre-Calc/Trig

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5

233. ## English

Is this sentence okay? I looked rightward.

234. ## Math Homework

Hi! I really need help with these. I tried them on my own but I got really confused. Thanks! 1.) If f(x)=1/x and g(x)=1/x^2, find the domain of g/f 2.) If h(x)=4/(5x+2)^2, find the two functions f and g so that f(g(x))=h(x).

235. ## Mechanisms and Machines

How many inversions does a six-bar linkage have?

236. ## ENGLISH - GRAMMAR ????

please guide me to understand phrases with explanation.

237. ## English

What are the different parts of speech?