# Questions Asked onNovember 3, 2016

1. ## Physics

An adult dolphin weighs around 1460 N. How fast must he be moving as he leaves the water vertically in order to jump to a height of 2.90 m? Ignore air resistance.

2. ## Calculus

A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. An industrial tank of this shape must have a volume of 1600 cubic feet. The hemispherical ends cost twice as much per square foot of surface area as the sides. Find

3. ## physics

A body moving with a velocity of 3m/s is brought to rest by a constant force after travelling 15m, calculate the retardation.

4. ## ELA

John Quinn does not explain the rule about the paddle to Paul, the narrator of The Pigman & Me. How does this one action affect the rest of the essay?

5. ## Maths

What will become Rs 4630.50 in 1 and haif years ,if the rate of interest is 10% per annum compounded half yearly? At what rate per cent does compound interest on a sum of money becomes fourfold in 2 years?

6. ## Science

A stone projected vertically upwards with a velocity of 20m/s. Two seconds later, a second stone is similarly projected with the same velocity. When the two stones meet, the second one is rising at a velocity of 10m/s. Neglecting air resistance, calculate

7. ## precalculos

The cost C of producing x thousand calculators is given by the following equation. C=-15.2x^2+15,990x+580,000(x≤​175) Find the average cost per calculator for each of the following production levels. 40,000​; 60,000​ and 175,000

8. ## Calculus

An offshore oil well is 4 kilometers off the coast. The refinery is 5 kilometers down the coast (see figure). Laying pipe in the ocean is twice as expensive as on land. What path should the pipe follow in order to minimize the cost?

9. ## Calc

A rectangular package to be sent by a postal service can have a maximum combined length and girth (perimeter of a cross section) of 90 inches (see figure). Find the dimensions of the package of maximum volume that can be sent. (Assume the cross section is

10. ## calc

a man 6 feet tall is walking away from a lamp post at the rate of 60 feet per minute. when the person is 6 feet from the lamp post, his shadow is 12 feet long. find the rate at which the length of his shadow is increasing when he is 145 feet from the lamp

11. ## English

Choose the meaning of the bolded vocabulary word in each passage in the next six questions. I can't bold them so the word will be in caps. Check my answers * = My answer 1. "Once, the listener fancied that he could DISTINGUISH the accent of town's people

12. ## English

Which of the following phrases best describes the setting of the story?

13. ## maths

Three numbers add up to 180. The second number is twice the first, and the third number is three times the first. WHAT IS EACH NUMBER?

14. ## Statisics

The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between \$23 and \$37 per share. What is the probability that the stock price will be: More than \$33? Less than or equal to \$27?

15. ## MATH

If m angle CBD=54 what is the measure of angle ACB?

16. ## sir damon plz help me or steve

An ac source of 50v,100÷πHz is connected in series with an inductor of inductance L ad a resistor of resistance R.the current in the circuit is 2A ad p.d. across L and R are 30v ad 40v respectively 1) calculate the average power dissipated ? (2)

17. ## Calculus

A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. An industrial tank of this shape must have a volume of 1600 cubic feet. The hemispherical ends cost twice as much per square foot of surface area as the sides. Find

18. ## math

Give the equation of a line that is parallel to y=3 through the point (4,4).

19. ## calculus

A patrol car is parked 50 feet from a long warehouse The light on the car turns at a rate of 30 revolutions per minute. How fast is the light beam moving along the wall when the beam makes the fol­ lowing angles with the line perpendicular from the light

20. ## calculus

Cars on a certain roadway travel on a circular arc of radius r. In order not to rely on friction alone to over­ come the centrifugal force, the road is banked at an angle of magnitude 0 from the horizontal. The banking angle must satisfy the equation rg

21. ## Math

Sandra has 16 red roses and 40 white roses. she wants to make arrangements of flowers with the same number of red roses and the same number of white roses in each arrangement. What is the greatest number of arrangements Sandra can make?

22. ## Social Studies

What did Second Great Awakening and the abolition movement have in common? A. Both relied on new technologies B. Both relied on Religious belief C. Both relied on cash crops D. Both relied on new immigrants Please help Answer is B

23. ## math

Find the largest and smallest values of the given function over the prescribed closed, bounded interval. F(x)=e^{x^2-2x} for 0

25. ## Pre-Algebra

Matthew is 5 years older than twice the age of his sister. If Matthew is 13, how old is his sister? 3 4 9 31 I think she is 3 or 4

if a map scale distance is 2cm:15km, what is the actual distance of a map scale that is 6cm? Do I set this problem up like this: 2cm/15km=?/6km and then cross multiply?

27. ## Calc

Find the length and width of a rectangle that has the given area and a minimum perimeter. Area: 50 square feet

28. ## Math

A baker bought some flour. He used to 2/5 of the flour to make bread and used the rest to make batches of muffins. If he used 16 pounds of flour making bread and 2/3 pound for each batch of muffins how many batches of muffins did he make

29. ## Physics

1. A 1200 kg car moves along a horizontal road at speed v0 = 20.1 m/s. The road is wet, so the static friction coefficient between the tires and the road is only μs = 0.189 and the kinetic friction coefficient is even lower, μk = 0.1323. The acceleration

30. ## math

A car travelled 268 km every 4.5 hours.At this rate,how long would it take to travel 380 km.

31. ## calculus

Consider a window the shape of which is a rectangle of height h surmounted by a triangle having a height T that is .3 times the width w of the rectangle If the cross-sectional area is A, determine the dimensions of the window which minimize the perimeter.

32. ## algebra

determine which of the ordered pairs are solutions to the given equation 3x-2y=12 , (2,-3) (4,-2) (6,3) (5, 15/2)

33. ## Physics

A mass is tied to a 1 m string. The string is attached to a point on a horizontal frictionless surface and the mass is set into circular motion. The string will break if tension becomes larger than 10 N. The maximum kinetic energy that the mass can achieve

34. ## Maths

The area of a triangle , whose base and the corresponding altitude are 15 cm and 7 cm, is equal to area of a right triangle whose one of the sides containing the right angle is 10.5 cm, Find the other side of this triangle. Ans.= area=15×7=105 105-10.5=00

35. ## spaniiiiisssshhh

1. With what materials are most houses in Mérida built? A. wood and plaster B. stone and concrete blocks C. wrought iron 2. Which of the following is the correct Spanish word for "bed"? A. la cama B. el closet C. el dormitorio 3. What is not true about

36. ## Algebra

Robert wants to buy wrapping paper to cover a square-shapedpainting. To determine the size of the wrapping paper needed for the painting, he adds 9 inches to each side of the painting.Robert picks out wrapping paper with a perimeter of 120 inches to wrap

37. ## Math

( 7.5x10^11 ) - ( 4.3x10^8 )

38. ## Maths

At what rate percent does compound interest on a sum of money becomes fourfold in 2 years.

39. ## Maths

In a journey of 1000 km a train covers the first 600 km /h and the remaining distance at 40km/h .calculate the average speed of the train during the whole journey.

40. ## Maths

A man walk from his home to town ,6 km away at a speed of 4 km/h and return s home by tanga at speed of 12 km/h.what is the mans average speed for the whole journey.

write 2sin(2x)+(rt12)cos(2x) in the form of y= Acos(2x-theta) by finding A>0 and theta is a real number between [0, 2pi] I found that a=2 and theta =pi/2. But I don't think that's right

42. ## Math

Pupils contributed some money to help needy people. They bought twenty four 2-kg packets of flour, thirty six 1-kg packets of flour and fifty kilogram bag of sugar. The flour was packed in 500 g packets and the sugar in 250 g packets. Hominy people got

43. ## Physics

passenger must experience no greater than 10 times the magnitude of the acceleration due to gravity as the spring cushions their fall & brings the elevator to rest. Calculate the spring constant assume mass of elevator and passenger is 'M' kg. what is the

44. ## Unit Rates

Which is the best buy? 16 ounces of hand soap for \$2.40 20 ounces of hand soap for \$2.80 24 ounces of hand soap for \$3.00 12 ounces of hand soap for \$2.00 I need answer as soon as possible please.

45. ## math

A function is graphed on the coordinate plane. What is the value of the function when x = −4? Question 4 options: -4 0 4 5

46. ## maths

kay has \$15 more than kim. Together they have \$55. How much does each person have

47. ## Math

Mrs. Miller is planning a vacation overseas. She knows that fuel is sold in liters in other countries. She wants to become familiar with this measure of volume. Mrs. Miller just purchased 14 gallons of fuel for her car. About how many liters is this?

48. ## maths

karim has \$15 more than Jack. Together they have \$55. How much does each person have?

where was the historic battle in which the ottomans defeated the serbs

50. ## Math

Vector u has a magnitude of 5 units, and vector v has a magnitude of 4 units. Which of these values are possible for the magnitude of u + v? There is more than one answer... 1 9 11 13

51. ## algebra

the dollar price for a barrel of oil sold at a certain oil refinery tends to follow the demand equation below where x is the number of barrels of oils on the hand in ( millions ) a) how much should be charged for a barrel of oil if there are 6 million

52. ## algebra

Simplify: 30x^6 − 6x^3 + 24x/−6x2, x ≠ 0

53. ## Math-PreCalc

Find the sum u+v. |u|=47, |v|=30, θ=90° The magnitude of the resultant vector is _____.(Round to the nearest tenth). Find the angle that the resultant makes with u. The angle is ____°. (Round to the nearest degree).

54. ## math

If lim┬(n→∞)⁡〖(x_n-x)/(x_n+x)〗=0, prove that lim┬(n→∞)⁡〖x_n 〗=x.

56. ## Math: THIS IS SOOOOO HARD!!!!!!!!!!

Convert the map scale to a unit rate. How many inches represent one mile? Show your work. Interpret the meaning of the unit rate. 3/10 in. = 7/8 mi. I Cant Figure This Out!!!! HELP!!!

57. ## social studys

in what way did the russian tsars fail to follow the example of western european rulers

58. ## maths

90 marbles are shared among 3 friends. Dave gets 10 more than Lall, who gets 10 more than lee. How much does dave get?

59. ## Math

A 73​-ton monolith is transported on a causeway that is 2500 feet long and has a slope of about 2.2°. How much force parallel to the incline would be required to hold the monolith on this​ causeway?

60. ## Physics

A)A 100kg person is riding a 10kg bicycle up a 25degree hill. The hill is long and the coefficient of static friction is 0.9. How much force does the person have to apply in order for her to ride 10m up the hill at constant velocity? B) If the person now

61. ## English

Who is the legendary Arthur, and what did he do to become king of England?

62. ## Math

A teacher has 360 pieces of candy. if there are 44 students,6 whom are boys, if discussed evenly, how many pieces of candy will each student get?

63. ## algebra

Which number is halfway between 1/3 and 1/2 ?

64. ## Government and politics

In what way do other branches and the public influence the bureaucracy? I need 3 paragraphs

sin(7x)= sin(x)[cos^2(3x)-sin^2(3x)]+2cos(x)cos(3x)sin(3x) I tried for an hour but still don't know how. Plzz help

66. ## Math

The cost of a pizza is \$10.50 for no toppings, \$12 with 1 topping, \$13.50 with 2 toppings, \$15 with 3 toppings, etc. what is a recursive formula that represents the cost of a pizza with n toppings?

A survey of the opinions of 12 leading Economists in a certain country showed that, because oil prices were expected to drop in that country over the next 12 months, 10 had lowered their estimate of the consumer inflation rate, 10 had raised their estimate

68. ## English

1. Can you keep it a secret to go shopping with me? 2. The money left it possible to help poor people. (Are both grammatical? Does each sentence need any correction?)

69. ## Math HELP!!

Gina uses a magnifying glass to look at bugs. A caterpillar that is 2 inches long appears 4.5 inches long through the glass. What is the scale factor? (1 point) 2.25 ** 0.4 9 2.5

70. ## Government and politics

How does making laws to the people make it easjer? THe elastic clause

71. ## English

1. She helped it happen for me to drive a car. 2. He let it happen to break the window. (What about these sentences? Can we use these structure?)

72. ## Math

You have a \$200,000 mortgage. You have had the house for one year. The rate is 7.5% fixed for 30 years. Rates have come down and you are thinking of refinancing at the new rate of 6%. 1) What is your mortgage payment and interest on your current mortgage?

73. ## Math

Place grouping symbols to make the equation true: 3x5-8+7-3/6=13

74. ## maths help

A binomial expansion is such that (p + x)^n = 3q + 6qx + 5qx² + .. If p ≠ 0, find the values of p, q and n plz show step

75. ## Math

Paul runs a speed of 9 miles per hour. How many miles per second is his speed?

76. ## Government and politics

Explain 2 enumerated powers of the president and 2 enumerated powers of congress

If 4

79. ## Math

|-3| , -3 what is the difference between the two

80. ## physics

A small disk of radius r is glued onto a large disk of radius R that is mounted on a fixed axle through its center. the combined moment of inertia of the disks is I. A string is wrapped around the edge of the small disk and a box of mass m is tied to the

81. ## Physics

1. A snowboarder of mass 60 kg is at rest on the top of a sand dune. The coefficients of static and kinetic friction are 0.55 and 0.4675, respectively. 60 kg μk = 0.4675 μs = 0.55  What is the angle  the incline must exceed so that the snowboarder

82. ## geography

In what ways do oil and water shape the lives of the people in the middle east? Provide specific examples. Thanks!

83. ## math

Write each equation in slope-intercept form. Underline the slope and circle the y-intercept in each equation. 4y=–6+4x all i got is that the y int. is -3/2 and that is correct

84. ## Biophysics

Assume a person expends mechanical energy at a rate of 450 W. If they were 15% efficient, what would be the rate at which he/she generates waste heat energy?

85. ## Language Arts

Which verb mood is used in the following sentence from the selection? This movie was advertised as "full of adventure." (1 point) indicative (my answer) subjunctive conditional imperative

86. ## Math

Your living room is 20 feet long by 12 feet wide. How long will the living room measure if you create a scale drawing where 1/2 inch = 4 feet?

87. ## Algebra

Alex deposited \$7500 in a year. The annual interest fees were at 12% and 10% respectively. The total interest payed was \$890. How much was paid at the 12% fee. I got as far as the equation portion of the problem. I was somewhere around 890=.12+.1(7500). I

88. ## Science

A community obtains electricity from a coal plant. This coal plant produces pollution that has caused environmental problems in the lakes, streams, and forests within the community. What kind of secondary pollution has the coal plant most likely produced,

89. ## Finite math

Let S={1,2,3} be a sample space How many subsets of S contain the number 3? How many subsets of S contain either the number 2 or 3?

90. ## Science

Is red hair mutated?

91. ## Physics

Assume a person expends mechanical energy at a rate of 450 W. If they were 15% efficient, what would be the rate at which he/she generates waste heat energy?

92. ## math

A number cube is rolled, and a coin is tossed. What is the probability that a four is rolled and the coins comes up tails? A. 1/3 B. 1/4 C. 1/6 D. 1/12

93. ## math

A spring is stretched 5 inches abobe its rest position. Itis then released and oscillates in damped harmontic motin with a frequency of 2cycles per second. After 7 seconds you measure the amplitude of the spring to be 1.5cm. 1.Find th damping constant C.

94. ## math

Given that [sin(A-B)/cos(A+B)]=1/3[tan(A-B)], find the values of cosB if sinA=1/2

95. ## Math

Joleen earns \$250 plus a commission of 3% of her sales each week. This week she wants to earn \$460. How much in sales does she need to meet her goal?

96. ## Maths

A metallic right circular cylinder is15cm high and the diameter of the base is 14cm it is melted and recasted into another cylinder with radius 4cm find its height and curved surface area

97. ## Algebra

Just a quick algebra question, if I had (e^x)/(x^3+x^-3) could I rewrite it as : (e^x)+(x^3)/(x^3) ?? (flipped the negative exponent from the bottom and made it positive on top)

98. ## English

1. I have experience flipping pizza dough; ______, I have eaten just about every kind of pizza you can imagine! 2. Cinderella had to learn how to get along with her sisters; ______ I am trying to learn ways to get along with my brothers. similarly,

99. ## Social Studies

How were the economies of the Nothern and Southern states different? How were they the same?

100. ## Physics

Why may someone not be able to cooled by evaporation?

101. ## physics -damon help

An ac source of 50v,100÷πHz is connected in series with an inductor of inductance L ad a resistor of resistance R.the current in the circuit is 2A ad p.d. across L and R are 30v ad 40v respectively 1) calc d average power dissipated 2) calc d power

102. ## math

Sketch the given region R and then find its area. R is the region bounded by the curve y=1/x^2 and the lines y=x and y=x/8

103. ## Chemistry

A cold pack manufacturer has decided to change the chemical in their cold pack from ammonium nitrate to ammonium chloride, a safer chemical. The original cold pack formulation used 100.0g of room temperature (27.0C) water and 35 g of ammonium nitrate.

104. ## English

1. They will attend the graduation ceremony from 4:00-6:00 p.m., and ___ they will enjoy the banquet. 2. The concert promoters worked very hard; ____ they did not manage to raise enough money to cover their expenses. 3. I was disappointed by the movie;

105. ## Math

Ralph brought his car to the mechanic to be repaired. The total bill including parts and labor was \$445. The parts cost \$120. He also paid d dollars per hour for 5 hours of labor. Which equation can be used to find the number of dollars, d, he paid per

106. ## probability

Brenda’s Bike Booth, at the mall, allows people to order a bike in their choice of 4 colors (Atomic Tangerine, Banana, Café Noir, or Dollar Bill) and the options of with or without a basket; with or without a horn. Given all of these options, what’s

107. ## Physics

If a particle takes two revolution in one sec & it took five revolution .Find angular velocity of particle.

108. ## Physics

A fire helicopter carries a 358 kg bucket at the end of a 10.4 m long cable. When the helicopter is returning from a fire at a constant speed of 51.4 m/s, the cable makes an angle of 23.7◦ with respect to the vertical. Find the horizontal force exerted

109. ## Social studies

"He has dissolved representative houses repeatedly, for a posing with manly firmness his invasions on the rights of the people." a) who is "he" b) how would this contribute to American animosity towards Britain?

110. ## French

Can someone who is fluent in french look over this and make sure it makes sense? Ma maison de rêve est à Paris. Il a le sous-sol, le rez-de-chaussée, et le premier étage. Il a la cuisine, la salle à manger, la salle de séjour, trois la chambre, et

111. ## Math

Alicia's weekly allowance is \$10 and Manchiny's weekly allowance is \$8. Every week they each spend \$3 on lunch. Write a numerical expression to show how many weeks it will take them together to save enough money to buy a video game for \$60.

112. ## math 2

Prove that (cos40-sin30)/(sin30-cos50)=tan50

113. ## Math

You have a \$250,000 mortgage. The 30- year fixed rate is 8.5%. You have had your house for ten years. You have 20 years remaining on your mortgage. The new 15-year mortgage rate is 5.5%. 1) What is your mortgage payment, principal and interest on your

114. ## maths very hard

(a) Find the points which divide the line joining A(1,3) and B(-4,-1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same x-y axes plot the point A(1,3) and B(-4,-1) and draw the line joining them. Add the three points which you calculated

115. ## maths

Consider the 4 points A(1,5), B(-4,6), C(0,0), D(-12,12). Find the gradients of the lines: (b) CD; (c) BD.

116. ## biology

If the first child of a couple was without dimples, an recessive trait, what is the chance that the second child will be born without dimples? A) 100% B) 25% C) 50% D) Cannot be determined from the phenotype of the child

117. ## Math

A printer takes 5mins to print 90 copies of a repor. At this rate, how many copies of the same report can it print in 1/2 hours

118. ## Calculus

Sketch the given region R and then find its area. R is the region bounded by the curve y=1/x^2 and the lines y=x and y=x/8.

119. ## books

is Fahrenheit 451 still relevant to our culture today

120. ## Physics Urgent!

Please help! This is due in three hours and I don't know how to do these! 1.A block accelerates at 3.1 m/s2 down a plane inclined at an angle 24.0◦. Find μk between the block and the inclined plane. The acceleration of gravity is 9.81 m/s2 . 2.Two

121. ## Chemistry

Calculate the amount of hydrogen gas and zinc sulphate produced when 40gram of zinc reacts with sulphuric acid

122. ## Math

Jenna reads 15 minutes more pn thursday than tuesday. She read 36 minutes on tuesday. How many minutes did she read on thursday

123. ## Algebra

I'm trying to rewrite 3x^2*e^-x*tan(4-x) Can I rewrite it as 3x^2*tan(4-x)/e^x ?

124. ## Math

Is the step function differentiable in its domain? I answered it and said that the step function is not differentiable in its domain because it is not continuous. For the a function to be differentiable it would need to have a value and a limit. However,

125. ## math

An investor estimates that next year’s sales for New World Products should amount to about \$75 million. The company has 2.5 million shares outstanding, gener- ates a net profit margin of about 5% , and has a payout ratio of 50% . All figures are expected

126. ## Math

There is a graph of a function that looks like y = x^4 , but it has a vertical asymptote at x = -2 and x = 4. The question then asks us to arrange the following numbers in decreasing order: g'(1), g'(-2), g'(0), g'(2), g'(4) I figured out all of the

127. ## physics

A ball is thrown horizontally off a building that is 30 m high with an initial velocity of 3 m/s.if an identical ball is thrown again horizontally from the same height with 6 m/s, what happens to the flight time? I have to use the guess method. Givens

128. ## Math

With this given equation: h=-1/144x^2, how wide is the base if this bridge?

129. ## ss

how did the treaty of Paris impact the French in the United States

130. ## Statistics

A friend gives you the following Fs and decision made. Does the decision appear to be correct? Explain.Do NOT provide critical or table values as explanations. F(2, 63) = .10, not significant F(3, 85) = -1.70, not significant F(1, 120) = 64.32, not

131. ## Research Methods

7. Consider the following hypothetical outcome of a two-way factorial designs [8 points] Pink/Car Pink/Bike Blue/Car Blue/Bike 58 56 70 21 45 96 69 25 61 88 28 31 59 78 53 23 23 59 65 79 19 65 20 17 48 41 51 18 33 22 69 28 65 46 87 35 27 10 39 20 38 17 75

132. ## maths

Consider the 4 points A(1,5), B(-4,6), C(0,0), D(-12,12). Find the gradients of the lines: (a) BD

134. ## maths

(a) Find the points which divide the line joining A(1,3) and B(-4,-1) internally in the ratios: (ii) 1:1 (iii) 3:1 (b) On the same x-y axes plot the point A(1,3) and B(-4,-1) and draw the line joining them. Add the three points which you calculated in part

135. ## chemistry

equilibrium is reached when red hot iron reacts with steam.why?

136. ## Health

Why is it important to eat a variety of foods?

137. ## physics

Two crates rest on top of one another.There is a crate of mass 4.62 kg on top of another crate of mass 2.19 kg. The coefficient of friction between the lower crate and the floor is μk = 0.440 and the coefficient of static friction between the two crates

138. ## Math

math test help!!! 1. There are 3 red paper clips, 5 yellow paper clips, and 6 silver paper clips in a jar. What is the ratio of the total number of paper clips to the number of red paper clips? I think 14:3 2. which of the ratios is equivalent to 12/20? I

139. ## geomentry

Two segments tangent to a circle from the same external point are __________

140. ## Honors history

6.what scientific achievements of early Andean cultures were adopted by the Incas? (1 point) i need help please!

141. ## science

what do mangroves ecosystem provide for organisms

142. ## Math

Samuel and Daniel shares some oranges in the ratio 4:5 respectively. Daniel received 3 more oranges than Samuel. How many oranges did Samuel get?