# Questions Asked onApril 15, 2015

1. ## statistics

A tennis player makes a successful first serve 51% of the time. if she serves 9 times, what is the probability that she gets exactly 3 first serves in? assume that each serve is independent of the others.

2. ## physics

If I weigh 741 N on Earth at a place where g = 9.80 m/s2 and 5320 N on the surface of another planet, what is the acceleration due to gravity (in m/s2) on that planet?

3. ## physics

A 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal. It is connected by a very light string over an ideal pulley at the top edge of the ramp to a hanging 19-kg block, as shown in the figure. The string pulls on the 15-kg

4. ## physics

A 40-kg box is being pushed along a horizontal smooth surface. The pushing force is 15 N directed at an angle of 15° below the horizontal. What is the magnitude of the acceleration (in m/s2) of the crate?

5. ## physics

A car of mass 1100 kg that is traveling at 27 m/s starts to slow down and comes to a complete stop in 578 m. What is the magnitude of the braking force (in N) acting on the car?

A hemispherical tank with a radius of 10m is filled from an input pipe at a rate of 3m^3/min. How fast is the water level rising when the water level is 5m from the bottom of the tank? (hint: the volume of the cap of thickness of h sliced from a sphere of

7. ## L.A

From which statement in The Governess could you conclude that Mistress is self-important? A."I didn't bother making a note of it because I always do it." B. "Maybe you thought you heard forty even I said thirty." C. "I excelled in mathematics. He gets that

8. ## english

Which of the following would most likely be an entry in a sentence outline? A. Education beyond high school versus education beyond college B. Education as a pathway C. Education as a tool D. Education can change a person's life.

9. ## chemistry

What is the volume of dry O2 gas at STP, if it had a volume of 5.00 L at 103 kPa and 300 K?

10. ## math

Task is to construct two brick columns of the dimensions shown on which an iron gate will eventually be hung. Because the bricks measure 8" long by 3 1/2" wide by 2 1/2" high, you decide to build each column by laying the bottom row of bricks as shown.

11. ## Math

Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?

12. ## Chemistry 11 grade -

Hydrogen gas was collected in a gas-collecting bottle with a volume of 30.0 mL by water displacement on a day where the temperature was 24ºC and the barometric pressure was 98.125 kPa. The vapour pressure of water at 24ºC is 2.99 kPa. What would be the

13. ## math

Renee is a sales associate at a store. She earns \$80 a week plus a 15% commission on her sales. Last week, she sold \$200 worth of items. What is the total amount Renee earned for the week? How much did she earn from commission?

14. ## geometry/trig

Initially a fifty foot ladder rests against a wall. As I start to climb it, the ladder slides down, finally stopping such that the ladder touches the wall at a point 8 feet below where it originally touched the wall. During the slide, the base of the

A rock of mass 5kg is pushed over the edge of a cliff which is 200m high 1.ignore air resistance and calculate the speed of the rock at the bottom of the cliff. In reality air resistance cannot be ignored. The rock eventually reaches terminal velocity of

16. ## 6th Grade World History

Hi, can someone please explain me this: What caused the shift from Hinduism to Buddhism? *Note: I'm learning about Ancient India. Thanks and I don't have too much time so please hurry. Thanks :)

17. ## math

Elin estimates her probability of passing French 0.6, passing chemistry is 0.8, (a)determine the probability that elin will pass French but fail chemistry (b) pass chemistry but fail French (c) pass both classes (d)fail both classes

18. ## Math

Each day Julia's math Teacher gives class a warm up qs. It's true/false 20% of the times and multiple choice 80% . Julia gets 70% on true false correct and 90% on multiple choice correct. Julia answered today's question correctly. What's the probability

19. ## algebra PLSSSSSS

Let f(x)=3x-6 ang g(x)=x-2 find f/g and its domain.

Polygon ABCD is reflected and dilated to give polygon PQRS. The coordinates of the preimage are (2, 2), (6, 8), (12, 8), and (16, 2). The coordinates of the image are (11, 15), (9, 12), (6, 12), and (4, 15). What is the scale factor of the dilation? 0.25

21. ## L.A

What makes this poem an analogy?

22. ## Math

Prove that 140 * 141 * 142 * ... * 159 * 160 is divisible by 4321.

23. ## Algebra 2

How many arrangements are possible using the letters in the word FUZZY if each letter "Z" is distinctly different than the other? How many arrangements are possible if the letter "Z" is interchangeabe with the other? Explain your reasoning.

24. ## Math

1.Jake has 10 t-shirts and 5 collared shirts. What is his ratio of t-shirts to collared shirts? this answer is 5/ 10 what i can't figure out is the second part of this 2. If Jake buys 3 new shirts, how many of them would you expect to be to be t-shirts,

25. ## math

The life span of a DVD player produced by one major company is known to be normally distributed with a mean of 6.2 years. If 4.01% of these DVD players have a life span of more than 8 years, what is the standard deviation of the DVD player’s life span?

26. ## chemistry

How many electrons does the Au+ ion have ? Enter an integer below without any letters or symbols.

27. ## REPEATING DECIMALS

which rational number is equivalent to: _ 1.16? A 7/6 B 15/13 C 17/16 D 29/25

28. ## EQUATION

What value of x makes the equation below true? 1/2(6x-6)+1=3(4x-1) A x=-9 B x=-1/9 C x=1/9 D x=9

29. ## cda

For school-age children, the environment must include a separate area where children have _______ to do their homework. A. a library and computer B. tables and chairs C. books and encyclopedias D. pens and pencils my answer is c

30. ## Chemistry

Predict the products of electrolysis in an aqueous solution of FeCl2. Please help. I don't understand how the answer is OH-, O2, H+, H2.

31. ## algebra

I need some help with this math problem: Let n be the number of oil refineries at t years since 2005. A reasonable model of oil refineries is n= -2.23t + 210.53. What is the slope of this model? What does it mean in this situation?

32. ## math

The batting averages of the first three batters in the Eureka College women’s softball team lineup are .310, .301, and .277. If the first three batters are considered as the “lead-off group”, what is the batting average of the group? A. .301 B. .296

33. ## ALGEBRA PLSSSSSS

For the function f(x)=(8-2x)^2, find f^-1. Determine weather f^-1 is a function.

34. ## geometry

The cargo space of the truck is 2.44 meters wide, 2.76 meters high, and 8.20 meters long. How many cubic meters of cargo space does the truck have?

35. ## Math

Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?

36. ## math

1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 .. angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the measure of angle sign4? (1 point) 53° 43° 37° ..

37. ## math

4.In Amy’s English class, 30% of the students play an instrument. She does not know how many in the whole school play an instrument, but there are 500 students in the school. A.Solve the proportion 30/100=n/500 to estimate the total number of students in

38. ## Science

Light waves strike a lamp shade. What property of light is demonstrated? A.diffuse reflection B.diffraction c.refraction D.regular reflection I think the answer is C but im not sure Please help

39. ## Math

Without graphing, tell whether the line containing (6.-3) and (0,-8) is horizontal, vertical or neither. I believe it horizontal

40. ## DIAMETER

What is the approximate volume of this sphere, which has a diameter of 18 inches? A 339 cubic inches B 1,356 cubic inches C 3,052 cubic inches D 24,417 cubic inches PLZ EXPLAIN THE PROCESS

41. ## Social Studies

1. The empress Theodora helped (1 point) the theater prosper. destroy the Byzantine Empire. women gain more rights.* Rome become prosperous again. 2. From the AD 500s to the AD 1100s, the Byzantine Empire (1 point) was a crossroads for trade. * was

42. ## even moar math

You own 5 pairs of jeans and want to take 2 of them with you on vacation. In how many ways can you choose 2 pairs of jeans? - 10 ways - 15 ways - 4 ways - 20 ways **

43. ## Math

3.Max says there were 6 students wearing shorts in his math class. He is not sure how many people were in the class, total, but he thinks about one third of them were wearing shorts. A. What percent is closest to 1/3 ? Explain. B.Write and solve a

44. ## Physics

A bicycler rider is traveling at 7m/s. During an 8s period, the bicycle rider then slows down with acceleration to a speed of 3 m/s. How far does the bicycle rider travel during the 8s? d=7m/s s=3m/s t=8s t x s = d/t x t d = s x t

45. ## physics

A 1000-kg barge is being towed by means of two horizontal cables. One cable is pulling with a force of 80.0 N in a direction 30.0° west of north. In what direction should the second cable pull so that the barge will accelerate northward, if the force

46. ## math -check

given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. Graph the linear using graphing calculator and write your window setting in the format x: Xmin, xmax, Xscl. Y: Ymin,

47. ## math

area 432 square ft. width is 3/4 of length, what is length

48. ## math

Mark's doctors appointment was 35 minutes after Tyson 's appointment. Tysons appointment was 20 minutes after Timothy's appointment. Timothy arrived 8 minutes before his appointment. But 17 minutes after Raul's appointment. Which started at 9:30 am. At

49. ## math word problems

Q. Mark's doctor appointment was 35 minutes after Tyson 's appointment, Tyson appointment was 20 minutes after Timothy's appointment. Timothy arrived 8 minutes before his appointment but 17 minutes after Raul's appointment which started at 9:30 am. At what

50. ## Simple math.

Simplify 5! -5 -15 * -120 -125

51. ## calculus (steps and explanation plz)

Find a curve y=f(x) with the following properties (i) y"=6x and (ii) its graph passes through the point (1,1) and has a horizontal tangent there.

52. ## L.A

President Lincoln’s Declaration of Emancipation, January 1, 1863" by Frances E. W. Harper 1 It shall flash through coming ages, 2 It shall light the distant years; 3 And eyes now dim with sorrow 4 Shall be brighter through their tears. 5 It shall flush

53. ## math

Test scores on a university admissions test are normally distributed, with a mean of 500 and a standard deviation of 100. a. What is the probability that a randomly selected applicant scores between 425 and 575? b. What is the probability that a randomly

54. ## chm 112

Only 6M KOH was present on the reagent shelf- there was no 6M NaOH. explain what effect this substitution has on the test for the presence of the ammonium ion?

55. ## L.A

"President Lincoln's Declaration of Emancipation, January 1, 1863 bu Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears IT shall flush the mountain

56. ## Precalculus

A rancher wishes to fence in a rectangular plot of land and divide it into two corrals with a fence parallel to two of the sides. If she has 300 yd of fencing available, how large an area can the plot have? This is what I have so far: A=xy 300=2x+3y

57. ## finance

Assume you just deposited ksh 100,000 into a bank account. The current real interest rate is 2%, and inflation is expected to be 6% over the next year. What nominal rate would you require from the bank over the next year? How much money will you have at

58. ## writting skills

1. Which one of the following comes first in an online catalog entry? A. Title of the book B. Year of publication C. Call number of the book D. Author's last name Student Answer: B Answer: Incorrect Reference: 2. You've located three books on a topic

59. ## statistics

A group of seven mountain climbers wishes to form a mountain climbing team of five.how many different teams could be formed?

60. ## math

suppose a hat containing 100 balls consists of 20blue ball,30yellow balls,30red balls and 20green balls.a sample of 5 balls is drawn from the hat one by one without replacement.what is the probability that there will be 2blue balls in the sample

61. ## math

The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. In a random sample of 460 pencils, approximately how many would you expect to have a diameter less than

62. ## Math

Determine which ordered pair is a solution of y=x2 -2. (-2,6) (5,21) (-1,-1) (-5,24)

63. ## maths

According to the Journal of Irreproducible Results, any obtuse angle is a right angle! x A P B C D Here is their argument. Given the obtuse angle x, we make a quadrilateral ABCD with ∠DAB = x, and ∠ABC = 90◦ , and AD = BC. Say the perpendicular

64. ## Math

Ellen, Fern, and Kyle are all drinking milk from the same size cartons in the cafeteria. Ellen's carton is 3/7 full. Ferns carton is 3/10 full. Kevin's carton is 3/4 full. Who has the least milk left in their carton? Explain how you know?

65. ## geometry

I tired but answers don't make since. Problem is segment CD is perpendicular bisector of segment AB. Need to find lengths of AC (9y-6), AD (3x), and AE ((5x +6). Others: BE=(5x+ y), BD (x + 10) and CB (7y). Figure like a kite. HELPPPPPPPPPP.

66. ## ALGEBRA PLSSSSSS

Let f(x)=x+2 and g(x)=x^2. Find (g o f)(-5)

67. ## maths

According to the Journal of Irreproducible Results, any obtuse angle is a right angle! x A P B C D Here is their argument. Given the obtuse angle x, we make a quadrilateral ABCD with ∠DAB = x, and ∠ABC = 90◦ , and AD = BC. Say the perpendicular

68. ## chemistry

Calculate the weight in grams of potassium hydrogen phthalate (KHP, KHC2H3O2, MW 202.2 g/mole) required to neutralize 25.00 ml of 0.1 M NaOH solution.

69. ## math

A large game die is a cube measuring 1.2” in length. The die is a solid made from liquid plastic. If a game comes with 6 such dice, how many cubic inches of liquid plastic were needed to make the 6 dice?

70. ## L.A

What do you learn from these stage directions in The Governess? [The faintest trace of a smile her lips] A. Julia is suddenly very happy. B. Julia knows something Mistress doesn't know. C. Julia has made an important decision. D. Julia is thinking about

71. ## math plz help

A bag contains 5 green marbles,8 red marbles,11 orange marbles, 7 brown marbles, and 12 blue marbles. You choose a marble, replace it, and choose again. What is P(red, then blue)? A.20/43 B.40/43 C.20/1849 D.96/1849 Is the answer A?? Thank you in advance

72. ## debate-english

I need help in finding good online sources for my essay. The topic and question is; why do community college students drop out?

73. ## Social Studies 30-2

In the article "An Example of Freedom of Expression" What is your response to the court's decision on Keegstra? How did Keegstra's individual right to freedom of expression conflict with the rights of others?

74. ## Math

Kenji, a pet store employee, wants to fit two fish tanks on one table. One fish tank is 4 feet wide and the other fish tank is 2/5 of a foot wide. When placed next to each other, what is the total width of the two fish tanks? Simplify your answer and write

75. ## POL201 American National Government

Question 1.1. Despite the greater federal authority in the federal relationship, federalism is still important for all the following reasons except that (Points : 1) it provides the best means of developing a vast country because it allows for

76. ## math

Kenji, a pet store employee, wants to fit two fish tanks on one table. One fish tank is 4 feet wide and the other fish tank is 2/5 of a foot wide. When placed next to each other, what is the total width of the two fish tanks? Simplify your answer and write

77. ## geometry

Henry -- on 1-24-14 you answered the question of the trangle ABC with midpoint of P. She didn't ask for P. What would it be?

78. ## SCIENTIFIC NOTATION

Japan and Fiji are both island countries. The population of Japan is approximately 1.3*10^8. The population of Fiji is approximately 8.8*10^5. Which is the best estimate of how many times as great the population of Japan is as Fiji? A about 1.5 times as

79. ## English

Which simple sentence has a compound verb? A. Becky and I weren't sure. B. Anne wanted a surprise party for Carrie. C. We have been planning the party since April. D. Finally, we voted and decided against a surprise.

80. ## marketing

explain how buying behavior of business customers in different countries may have been a factor in speeding the spread of international marketing.

82. ## Math

Simplify 6P2. - 30 - 15 *** - 12 - 720

83. ## More math

Simplify 9C4. - 126 *** - 15,120 - 5 - 3,024

84. ## socials

We're the sons of liberty justified in their treatment of the loyalists

85. ## cda

Which of the following is an allergic skin condition? A. Scarlet fever B. Chicken pox C. Contact dermatitis D. German measles my answer is c

86. ## Economic

Suppose that Betsy’s utility function is given by the equation U=Y0.3 where Y is measured in thousands of dollars. Betsy’s current job pays her \$20,000 per year and she can earn this amount next year with certainty. Betsy is offered a different job but

87. ## chemistry

How many moles of solute are in the following solutions? Part A 250mL of 0.26M acetic acid, CH3CO2H 2.90L of 0.31M NaOH 980mL of 3.5M nitric acid, HNO3

imagine you running your own tour guided cc business, how will institutional environment as a macro environment affect your business, with an example.

89. ## math

What is the probability that a randomly selected applicant scores between 425 and 575? a. What is the probability that a randomly selected applicant scores between 425 and 575? b. What is the probability that a randomly selected applicant scores 625 or

90. ## History

I am having a hard time with this question and where to look for the answer. How might the cultures of Latin America be different if the spanish and portugese never arrived? Also what kind of culture do you think would dominate today?thanks

91. ## Chemistry

Suppose that 18.84 mL of 0.315 M Ca(OH)2 is required to neutralize 18.2 mL of aqueous HCl solution. What is the molarity of the HCl solution? All help is appreciated. Would also like help showing which numbers go where within any equations! Thanks so much!

92. ## Math

Prove that 140 * 141 * 142 * ... * 159 * 160 is divisible by 4321.

93. ## Math (ASAP)

Write out the first 4 terms of the following sequence that is define recursively. a1=32 ak+1=1/2ak

94. ## Physics

If a 0.50-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 8.0 N for a distance of 4 m, then what would be the block's velocity?

95. ## L.A.

"President Lincoln's Declaration of Emancipation, January 1, 1863 bu Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears IT shall flush the mountain

96. ## Stats

A professor believes that all Thursday sections are cursed and will always score lower on tests compared to Monday sections. To tests this he collects samples of test scores from these two sections. For Monday's section, the mean test score was 60, the

97. ## Math

What is 21.21% rounded to two decimal places?

98. ## Physics

When we force protons through a narrow slit, we are gaining certainty in their position. As we gain certainty in their position, what should happen to the certainty on momentum?

99. ## Physics

We think of the width of the central maxima on our screen as a measure of the uncertainty in the direction of travel of the protons. What happens to this uncertainty in the direction of travel (momentum) as the slit width narrows?

100. ## Physics

An engineer has an odd-shaped object of mass 16 kg and needs to find its rotational inertia about an axis through its center of mass. The object is supported on a wire along the desired axis. The wire has a torsion constant κ = 0.4 N· m. If this torsion

101. ## Chemistry

A solution is prepared by mixing 37.5 mL of 0.20 M (CH3)3N with 50.0 mL of 0.20 M (CH3)3NHC and then diluting the mixture to a total volume of 100.0 mL. Calculate the pH of resulting solution. So far I have been able solve the mols of the two chemicals.

102. ## Chemistry

In an alternate universe, electron energies in an atom are found to obey the following equation where n is the principle quantum number: E = 3.0 x 10^(-19) J * nm * (1/n^2) ..where n is the principle quantum number A gas discharge lamp, like the lamps used

103. ## physics

find the weight of a person with a mass of 68.0kg

104. ## geometry

question is: find the coordinates of midpoint P of line BC. Calculate lengths of AP, BP, CP. P is ? (midpoint of BC which bisects

105. ## Pre - CALCULUS

Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)

106. ## math

Assume the brakes of an automobile produce a constant deceleration of k ft/sec^2. Determine what k must be to bring an automobile traveling 60 mph to a rest in a distance of 100 ft from the point where breaks are applied? With the same k, how far would a

107. ## math

Given the equation - 3x +2y =4. Write another linear equation that will form a linear system with exactly one solution? I usually try to answer b4 i ask question But this time i'm really stuck. plz help ?

108. ## physics

two identically charged sphere of mass 3 gm each are suspended from a point by threads of length 13 cm. they are separated 10 cm due to repulsion. find the tension of the thread and charge on the sphere?

109. ## Chemistry

A photoelectric experiment is performed by separately shining a laser of 450 nm (blue light) and 560 nm (yellow light) on a metal surface and measuring the number and kinetic energy of the ejected electrons. The threshold frequency of the metal is

110. ## Science

You mix oil and vinegar for a salad dressing. After a few minutes, the oil has separated and is floating. Infer which has the greater density - oil or vinegar. Explain. I put "Vinegar has more density since it's on the bottom, where the oil has less since

111. ## Precalculus

Evaluate: tan(arcsin(8/17)+ arctan(4/3)) I understand that I have to make triangles out of the values given-- with 15 being the other side of the 17 and 8 triangle, and 5 being the other side of the 4 and 3 triangle. I'm not sure where to go on from there,

112. ## Precalc

Find the derivative of: f(x) = 1/(3x)^4 + 3x^4 Determine the points, if any, at which the function has a horizontal tangent line y = 5x^3 - 15x^2 y = 2x^3 + 6x^2 thank you!

113. ## Math

A truck carries cartons packed with boxes. The boxes were 22 inches long on each edge. If 4 boxes completely fill the carton, what is the volume of carton in cubic feet?

114. ## calculus (optimization prob help!)

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0

115. ## Chemistry

A beam of light with a frequency of 7.61•1015 Hz hits the surface of the metal. What is the velocity of the electron ejected in m/s? (6 pts) How do you find the velocity based only off the frequency?

116. ## math

write an addition equation the equation must have a 1 a 2 a 3 digit added and use all of these digits 662-228-8000

117. ## Physics

8. A 4.70 m long pole is balanced vertically on its tip. What will be the speed (in meters/second) of the tip of the pole just before it hits the ground? (Assume the lower end of the pole does not slip.) I did V^2=0^2+2(9.8)(4.70) and was wrong. I did

118. ## Physics

8. A 4.70 m long pole is balanced vertically on its tip. What will be the speed (in meters/second) of the tip of the pole just before it hits the ground? (Assume the lower end of the pole does not slip.) I did V^2=0^2+2(9.8)(4.70) and was wrong. I did

119. ## integral

integral from 0 to pi/4 of (secxtanx dx) Please show how to find the antidervative of secx and tanx.

120. ## Math

Mass, m, is varies inversely as acceleration, a. The constant of variation is force,f. Write an equation to express this relationship.

121. ## Science

You are trying to determine how far it is to your new friends house. You find out that you actually live on the same street. You also use the same bus stop. Google maps says that your house is 24 meters south of the shared bus stop. Your friend said that

122. ## Science/Physics

My question is you walk 3.9 kilometers to school. In gym, you do the 12 minute run and actually make it 2.4 kilometers. After school you walk your friend home first and then go home it is 3.1 kilometers farther than your morning walk to school. What was

123. ## Statistics

Can you explain why the scatter plot shows a negative Z value when the Histogram starts at zero.

124. ## math

How many grams equal 7 kg?

125. ## Math

Time varies inversely as the rate of travel. If Jennifer drove 13 hours at an average rate of 54 miles per hour, how long would thr trip take at a rate of 65 miles per hour

126. ## math

the distribution having p.d.f. f(x)=(exp(x)*a^x)/x! x=0,1,2,... a>=0 find the maximum liklihood estimator of a

127. ## Science

A student is walking at 3.3 meters per second along a straight sidewalk. At a time of 6.8 seconds his position is at 19.7 meters right of the starting point. Later, the student is 52.5 meters to the right of the starting point. What was the time that the

129. ## Algebra

Factor the follwoing as if this were a trinomial 4t^5/4 - 9

130. ## Math

A suitcase has a mass of 12,000 grams. What is the mass in kilograms? I say 12

131. ## Math

I am a closed shape made of 6 line segments. I have2 angles less than a right angle and no right angles. What shape am I draw an example

132. ## Algebra

Find the following quotient. (4-7i)/(4+7i)

133. ## math

The amount of Jen’s monthly phone bill is normally distributed with a mean of \$50 and a standard deviation of \$10. Find the 25th percentile. A. About \$46.30 B. About \$43.30 C. About \$43.40 D. about \$43.20 I came up with \$43.26 which its not a choice.

134. ## physics

A boy drops a mango from a tree it falls without rebound wat happens to its momentum

135. ## calculus

A hemispherical tank with a radius of 10m is filled from an input pipe at a rate of 3m^3/min. How fast is the water level rising when the water level is 5m from the bottom of the tank? (hint: the volume of the cap of thickness of h sliced from a sphere of

136. ## math

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0

137. ## Math

how to multiply1111X101 in base 2 binary

138. ## math

find the length of an arc of a circle of radius 5.6 cm which subtends an angle of 60 degrees at the centre of the circle.(take pie as 22 divided by 7.)

139. ## L.o

Four factors that could threaten or limit the core functions of the media

140. ## linear algebra

Let L: R2 ¨ R2 be a linear transformation for which we know that L(1 1)= [-2 1] L(-1 1)=[3 2] a)what is L(-1 5) b)what is L(u v)?

141. ## science- urgent

How do humans grow crops on land that would naturally be either too dry or too wet? Explain. ?

142. ## Math

The time it takes to complete a given trip varies inversely as the speed traveled. If it takes Tim 10 hours tro travel from Cleveland to Albany at 42 mi/h, how long will it take him to make the trip at 60 mi/h?

143. ## LA

What does "when one person changes for the better, others are affected for the better" means? Explain in at least 2-3 sentences.

144. ## science

What can we learn from an experiment itself?

145. ## biology

Certain insect species have become more and more resistant to insecticides. What type of natural selection is this, and how does it differ from the other types?

146. ## Chemistry

Suppose you are assigned to prepare a buffer of 0.10M HNO2 (Ka=1.7 x 10^-4) and 0.10M NaNO2 by mixing equal volumes of both solutions. What is the pH of the resultant solution? How would I first start this question? I have no clue what the steps are to be

147. ## History

Muslims must A. pray eight times a day B. save all their money C. fulfill the five pillars of Islam D. live in Makah PLEASE HELP........

148. ## art

What to do you like to do that i can draw? for example if you like to sing i can draw a microphone, you like basketball i can draw a basketball what else can i draw

149. ## math

the distribution having p.d.f. f(x)=exp(a-x) x>0 Let x1=min{x1,x2,...,xn}and zn=n(x1-a), find the limiting distribution of zn

150. ## chemistry

A compound has 85 % tin and 15% antimony. How many grams of antimony will be in 50. grams of the compound. My question is do I need to calculate the empirical formula first to do thi? I'm not sure where to start.

151. ## English

1. A hippo is an animal which has a big mouth. 2. A hippo is an animal which is very heavy. 3. A hippo is an animal which is very big. 4. A crocodile is an animal which has lots of teeth. 5. A crocodile is an animal which has a strog and long tail. 6. A

152. ## World view

Is it possible to reconcile the popular beliefs listed with the claims Jesus made? Why or why not?

153. ## Math (ASAP)

Write out the first 4 terms of the following sequence that is define recursively. a1=32 ak+1=1/2ak

Hi, so I did the coin drop experiment. I finished project, wrote my hypothesis, my data, my observations, and my conclusion. What I need help is that in this experiment I don't know which on is the independent and dependent variable. That's all I need. Can

155. ## trigonometric function

If sinA=12/13 & tan B=3/4 then find ¡= sin(A+B) ¡¡=COS(A-B) ¡¡¡=COT(A-B) ¡v=cot(A-B) Sir please give me the correct ans because tomorrow is my class

156. ## Help!!! Social studies

What were the 4 effects of the cotton ?

157. ## History

Which city was located in the Persian Empire? A. Baghdad B. Jerusalem C. Alexandria D. Makkah Which of the following was located northeast of the Arabian Peninsula? A. Persian Empire B. Byzantine Empire C. Roman Empire D. Sahara What does Islam mean? A.

158. ## Math

The volume of a gas varies inversely as applied pressure if the pressure acting on a 45m^3 of gas is lowered from 3 atmospheres to 2 atmospheres what new volume does the gas occupy

159. ## chemistry

25.0 ml of 15% NH4NO3 solution is diluted to 300.0 ml. What is the concentration of the diluted solution? My Work: Total molar mass of NH4CO3 = 80.052 .15 x 80.052= 12.0078 25.0 ml (12.00 M) = 300.0 ml (c2) 300.19/300.0ml = The concentration is = 1.0M

160. ## Math

The time it takes to clean the house varies inversely with the number of people cleaning. If it takes 1 person 4 hours to clean the house, how long will it take 3 people? 12 hours

161. ## English/Sociology

Im looking for some media examples of how women who don't want kids are perceived by society... one example I have is How I Met Your Mother, where one of the main characters Robin doesn't want kids..... Can anyone think of any other examples? Thanks!

162. ## algebra

what is the first step when solving x/15=3/5? write a proportion using an unknown value x and the ratio 5:6 then solve it. in an orchestra, the ratio of trombones to violas is 1 to 3. a. there are 9 violas. write a proportion that gives the number t of

163. ## Math

The variable y varies inversely as x : y is 1 2/3 when x is -3/5. Find y when x is 3/7

164. ## 6th Grade Science Experiment

Hi, forget my first post. Can someone please explain what a dependent and independent variable is? Thanks and I don't have too much time either.

165. ## Linear Functions!!!!

Which equations represent a linear function? Equation 1 y=5x-2 Equation 2 y=-1/3x Equation 3 y=x^2-3 Equation 4 y=1

166. ## Scientific Notation

Which is equivalent to 3^3/3^-1? A -81 B -1/81 C 1/81 D 81

167. ## chemistry

what mass of zinc dissolved in dilute HCL will produce 0.15g of hydrogen ? can you explain the steps to sloving this question please

168. ## math

bruno is measuring water for an experiment. he fills a 2 litre container and a half liter container. how much water does bruno use altogether? give your answer in millilitres.

2 line segments intersect to form an angle that has a measure of 50.7 degrees. What is the measure in degrees of an angle that is supplementary to this angle?

Hi, can someone please give me a few examples of how people use functions in the real world and explain them too? Thank You :)

171. ## Math

If you have a spinner with six spaces each with a letter P,U,I,O,E,N and you spin the spinner twice what is the P(vowel, then P)? A.1/3 B.1/9 C.5/6 D.5/12 Is the answer D?

172. ## SOUTH CAROLINA STATE HISTORY

9. Which event did NOT change the culture of the United States during the early 1920s? (1 point) a. bank failures that closed factories and decreased job opportunities b. installment plans used to purchase expensive consumer goods c. boll weevil

173. ## pre - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20

174. ## maths

According to the Journal of Irreproducible Results, any obtuse angle is a right angle! x A P B C D Here is their argument. Given the obtuse angle x, we make a quadrilateral ABCD with ∠DAB = x, and ∠ABC = 90◦ , and AD = BC. Say the perpendicular

175. ## find the height

A paper cone cup beside a water cooler has a diameter of 6 centimeters and a slant length of 9 centimeters. What is the approximate height,h, of the cup? A 3 radical 5 centimeters B 6 radical 2 centimeters C 3 radical 10 centimeters D 7 radical 2

176. ## physics

At what altitude should a satellite be placed into circular orbit

177. ## Physics

How much energy is require to set a 0.304m phonograph record into rotation at 33.33 revolution per minute if the mass of the record is 0.11kg?

178. ## To Michelle

I posted a response to that potentiometric analysis problem but it's pretty far down the list. Let me know if you can't find it and I can help.

179. ## Science

Which of the following illustrates mechanical weathering? 1.Carbonic acid weathers marble and limestone. 2.As plants grow, they produce weak acids that slowly dissolve rock. 3. Oxidation causes weathering in rock. 4. Repeated freezing and thawing in rocks

180. ## Accounting

ZIMMER LANDSCAPING COMPANY Trial Balance April 30, 2014

181. ## Accounting

ZIMMER LANDSCAPING COMPANY Trial Balance April 30, 2014

182. ## math

The value of the independent variable in a function is always __?__ the value of the independent variable A greater than B dependent on C equal to D less than

183. ## writting skills

If a Works Cited entry begins with the title of an article, we can assume that A. the information taken from that source isn't reliable. B. the author listed wasn't credible. C. the name of the author isn't important. D. no author was listed. I choose D. ?

184. ## physics

When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 6.7 x10-7 m and a maximum speed of 3.9 x10-3 m/s. (a) What is the frequency (in Hz) of the eardrum's vibrations? (b)

185. ## Pre-calsulus

a twin-engine cessna is heading on bearing of 35 degrees with an air speed of 180 mph. if the wind is out with a bearing of 90 degrees at 40 mph, then what is the bearing of this course? what is the ground seed of the airplane?

186. ## Math

can positive and negative X axis or positive and negative y axis have different scales? I mean that is it possible for positive and negative sides of a particular axis(X or Y) to have different scales if numbers to be plotted on one side large and small on

187. ## L.A

From which statement could you conclude as self important? A. "I didn't bother making a note of it because I always do it." B. "Maybe you thought you heard forty when I said thirty." C. "I excelled in mathematics. He gets that from his mother." D. " the

188. ## math

Larry and Willa are each reading the same book.Larry has read 2/3 of the book.Willa read 4/6 of the book,so she read more.Is Willa correct?Explain

189. ## SCIENTIFIC NOTATION

What is the product? (5*10^-7)*(3.2*10^12) A 1.6*10^-84 B 1.6*10^-5 C 1.6*10^5 D 1.6*10^6

190. ## pre - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20

191. ## physics

A skier descends a mountain at an angle of 35.0º to the horizontal. If the mountain is 235 m long, what are the horizontal and vertical components of the skier's displacement?

192. ## pre - CALCULUS

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2

193. ## ALGEBRA PLSSSSSS

f(x)=x^2-16 and g(x)=x+4 find f/g and its domain.

194. ## ALGEBRA 2 (LOGARITHMIC FUNCTIONS)

These are some I chose to practice but I have a hard time knowing how to do it. The answers are online but that doesn't help. These deal with logarithmic functions etc. PLEASE HELP! THANKYOU 1.)solve the equation: 3^(x+1)=27^(x+3) 2.) e^x=5 3.) 2^(3x)+9=25

195. ## EQUATIONS

Which equations represent a linear function? Equation 1 y=5x-2 Equation 2 y=-1/3x Equation 3 y=x^2-3 Equation 4 y=1 A 1 and 2 B 2 and 3 C 1, 2 and 3 D 1,3, and 4

196. ## math plz help

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. A. Find the theoretical probability of selecting a pink rubber

197. ## ALGEBRA PLSSSSSS

What is the inverse of the given function? y=7x^2-3

198. ## geometry

a racing track whose left and right ends are semicircular . the distance between two inner parallel line segments is 70 m and they are each 105 m long . if the track is 7 m wide , find the difference in the lengths of the inner edge and outer edge of the

199. ## ALGEBRA PLSSSSSS

For the function f(x)=x+9, find (f o f^-1)(5)

200. ## Communication in the Workplace

Imagine that you have taken a new job as head of Human Relations (HR) for an up-and-coming software firm. Your 150 employees are hip, smart and tech savvy. They are also big cell phone users. Cell phones are an important tool for your business

201. ## ALGEBRA PLSSSSSS

For the function f(x)=x^2-12, find (f o f^-1)(4)

202. ## Algebraic expression

One more than the product of 7 and Mabel's height

203. ## english

Hello I am having quite a bit of trouble trying to figure out a better way to answer this. 1. In the video, The Fates Present: Pyramus & Thisbe,There are parts of the animated version in which there is a character, who appears at the beginning of the

204. ## chemistry

Describe in detail how you would prepare 1000 ml of 0.1 M NaOH from 6 M of NaOH stock solution.

205. ## Chem

Pure gold adopts a face-centered cubic crystal structure. It also has a density of 19.30g/mL. What is the edge length of gold's unit cell? What is the atomic radius of gold? I understand how to do this problem the other way: when you have the unit cell and

206. ## chemistry

Describe in detail how you would prepare 500 ml of 0.1 M HCl from 6 M HCl stock solution.

207. ## SCIENTIFIC NOTATION

What is the product? (5*10^-7)*(3.2*10^12) A 1.6*10^-84 B 1.6^*10^-5 C 1.6*10^5 D 1.6*10^6 I thought it would be 16.0*10^5 but after moving the decimal one place to the left I thought it would be 1.6*10^4 but it isn't an option

208. ## cda

The background screening of possible employees should include A. IRS federal income tax payment verification. B. family health history. C. a personal physical fitness assessment. D. Social Security number verification my answer is d

209. ## angles

Abc is 71. and dbc is 45. then what is abd

210. ## Math

If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?

211. ## maths

a water tank has nine steps in it. a monkey sitting on the topmost step. the water level is at last step. the monkey jumps 3 steps down and then jumps back 2 steps up. in how many jumps will he reach the water level?

212. ## EXPONENTS

Which is equal to 3^3/3^-1? A -81 B -1/81 C 1/81 D 81 The options totally confuses me because I thought it would have to be 3^2

213. ## pre - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20