# Questions Asked onMay 3, 2017

1. ## English

If you were adjusting your reading rate to suit your purpose, how would you read lines 29-30 from A Surprising Point of View? A.) Quickly, to create the feeling of the conversation**** B.) Slowly and carefully C.) Quickly, to pass over unimportant

2. ## History

Can someone please check my answers? 1.What was the U.S. response to the terrorist attacks of September 11, 2001? A. The United States launched a global war on terrorism. B. The United States pulled out all troops fighting in other countries. C. The United

1. What is an example of a stable system?

4. ## statistics

Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 84 84 mmHg and a standard deviation of 9 9 mmHg. Using the empirical rule, what percentage of adult males have diastolic blood pressure readings

Let f(x)=201+9e−3x . What is the point of maximum growth rate for the logistic function f(x)=20/1+9e^-3x ? Round your answer to the nearest hundredth. (0, 2)

6. ## GEOMETRY

1.) Estimate the value of √ 52 to the nearest whole number: A. 9 B. 8 C. 7*** D. 6 2.) Identify all sets to which the number 3.1214122144...belongs A. rational number B. irrational number*** C. integer, rational number D. whole number, integer,

7. ## Geometry

Given: KLMN is a trapezoid, KL = MN, m∠LKM=m∠MKN, LM:KN = 8:9 , Perimeter KLMN = 132 LM and KN are parallel Find: The length of the legs. I reposted this question because the last time was not vary clear, and I got 49 but it is wrong

8. ## geometry

What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m?

9. ## geometetry

Given: KLMN is a trapezoid, m∠K = 90°, LM = 9, KN = 18, MN = 15 Find: Area of KLMN LM and KN are parallel

10. ## Science

An engineer discovered that a TV set was receiving too much voltage to work properly. Which of the following circuit parts should the engineer add to make the TV set work properly? A:switch B:insulater C:resistor D:conductor I think C is the right answer.

11. ## geometry

The lengths of the bases of the right trapezoid are 9 cm and 18 cm. The length of a longer leg is 15 cm. Find the area of the trapezoid.

12. ## math helpppp?!

A family has two children. M represents male, and F represents female. What is the sample space for the gender of the children? {F, M} {FM, FF, MM, MF}

13. ## Math

1. add or subtract {4x^2+15x-3}-(3x^2+5) a.7x^2+15x-8** b.x^2+12x+2 c.x^2+15x-8 d.7x^2+8 2. Simplify the polynomial -3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2** c.5f^2+11f-2 d.-5f^2+11-2 3. Add or subtract (2x^2+6x+1)+(-7x^2+2x-3) a.5x^2-4x-2

14. ## Algebra 2 check my last answer?!

A supermarket finds that the number of boxes of a new cereal sold increases each week. In the first week, only 16 boxes of the cereal were sold. In the next week, 33 boxes of the cereal were sold and in the third week 50 boxes of the cereal were sold. The

15. ## Statistics

Two cards are drawn in succession from a deck without replacement. What is the probability that both cards are greater than 2 and less than 8?

16. ## Economices

A lightning technician's work on a movie shoot ends in a week. what type of unemployment will she experience at that time? A frictional B structural C casual D cyclical

17. ## algebra 2 help asap

Let f(x)=81+3e−0.7x . What is the value of f(3) ? Round the answer to the nearest hundredth. Enter your answer in the box. idk how to do this :/

18. ## social studies

What landform caused by water erosion and deposition is shown in the image? A) Floodplain B) Meander C) Delta D) Alluvial Note: this question has a picture, but I have no Idea to add it

19. ## math

How do you round a decimal to the nearest hundredth? Example: 0.096

20. ## Pre-Algebra

Here's the instructions for my portfolio: 1. Choose two animals with different speeds. You can choose fro m the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in which the two animals have an equal

21. ## Chemistry

If you dissolve 10.0 g of compound X in 100.0 mL of distilled water, the liquid turns red. The temperature of the liquid stays at 24 C for 10 minutes. Why would you not sell a cold pack with a compound X?

22. ## Language Arts

1. One would expect people living in utopian society to be A. wealthy B. difficult C. idealistic D. impossible*** 2. Which statement best describes a utopian community? A. People band together to share resources and duties equally.*** B. Resources are

23. ## College Algebra

A projectile is thrown upward so that it's distance (in feet) above ground after t seconds is given by h(t)=-10t^2+440t. What is its maximum height?

Let f(x)=201+9e−3x . What is the point of maximum growth rate for the logistic function f(x)=20/1+9e^-3x ? Round your answer to the nearest hundredth. (0, 2)

25. ## Biochem

Consider the malate dehydrogenase reaction from the citric acid cycle. Given the following concentrations, calculate the free energy change for this reaction at 37.0 °C (310 K). ΔG°\' for the reaction is 29.7 kJ/mol. Assume that the reaction occurs at

26. ## Maths

sarika prepared squash from tomato,carrot,apple juices. 1/3 of the squash was tomato juice and 2/3 of the remainder was carrot juice. 315 ml of squash vs carrot juice. what volume of the squash was apple juice?

27. ## Social Studies

1. Where did most Muslims in the Arab Empire live? a. in cities b. near Makkah c. in apartment buildings d. in villages 2. Muslim scholars a. preserved ancient learning. b. did not do original work. c. misunderstood math. d. were greatly persecuted. 3.How

28. ## geometry

Given: KLMN is a trapezoid, KL = MN, m∠1=m∠2, LM:KN = 8:9 , PKLMN = 132 Find: The length of the legs. I got 49, but it was wrong

29. ## math

andy had 5 1/2 quarts of juice. does he have enough to give a 2/3 cup serving to each of the 32 members of the band? explain

30. ## math help urgent please

To enter a local fair, one must pay an entrance fee and pay for the number of ride tickets he/she wants. Admission to the fair is given by the equation f(x) = .50x + 10, where x represents the number of tickets purchased and f(x) represents the total

31. ## Math

A pendulum is connected to a rope 3 m long, which is connected to a ceiling 4 m high. The angle between its widest swing and vertical hanging position is pi/3. If the pendulum swings out to its widest position in 2 seconds, model the height of the pendulum

32. ## Math

Rohit is twice as old as roshni.5 years ago his age was three times roshni age.find their present ages

33. ## Algebra2

solve the equation cos theta - tan theta * cos theta = 0 for 0< theta < 2 pi My answer is pi/4,5pi/4

34. ## I dont know

the idea that religion and government should be seperate is known as A) secularism B) democracy C) communism D) fascism i think it is D but if anyone can help me i go to connexus and i need help

35. ## math

Obtain all the zeroes of the polynomial of p(x) if sum of all the polynomials are given : (1). P (x) = x^4-8x^3+23x^2-28x+12 if 2 zeroes are 1 & 2.(2). p (x)=96x^4-128x^3+62x^2-13x+1 & 2 zeroes are 1/2 & 1/4

36. ## Science - physics

the fence posts around a large pasture are 2.5m apart. a horse starts running west beside the fence. when the horse passes the fifth fence post, your second hand is on the 9.0 mark. when the horse passes the fourteenth fence post, the second hand is on

37. ## Math

A man travels from x on a bearing of 060 to a town y, which is 200km away. At y,he changes course and goes to a town z in a bearing of 195.if z is directly east of x, calculate I. How far is y from z ii. The distance of z from x

38. ## History

1) The mining boom changed the land by causing A) towns to spring up overnight. B) people to become more migratory. C) railroad expansion around profitable mines. D) all of the above 2) The government attempted to prevent the stock market crash of 1929 by

39. ## Algebra help?? Stuck!

The equation y=−0.065x2+6.875x+6200 models the amount y of sugar (in pounds per square foot) produced where x is the amount of fertilizer (in pounds per square foot) used. What is the best approximate for the amount of sugar produced when 3 pounds per

40. ## Physics

A 0.299 kg bead slides on a curved wire, start-ing from rest at point A as described below: A: a crest (hill) 6.15 m high b: a valley between A and C C: a crest (hill) 1.85 m high The acceleration of gravity is 9.8 m/s2 . 1) If the wire is frictionless,

41. ## Literature

The Stage Manager sets the scene and introduces each act of the play with a monologue a question-and-answer the hymn "Blessed Be the Tie That Blinds" stage directions

42. ## Math

Store a has a promotion if you Bryce three shirts you get 25% off the total price of the three shirts store be has the same shirts on sale with a promotion that if you buy three shirts you get the third shirt on a 50% discount store see has the same shirts

43. ## Probability theory

suppose a student is offered a chance to draw a card from ordinary deck of 52 playing cards and win \$10 if he or she draws an ace, \$ 2 for a King, and \$1 for a queen. If \$2 must be paid to play the game, what is the expected winnings every time the game is

44. ## Statistics

In how many ways can 10 different books be divided among a, b and c so that 5 given to A, to 3 to B and 2 to C.

45. ## Statistics

A student s to answer 10 out of 13 questions in an exam. How many choices he has if he must answer at least 3 of the first 5 questions.

46. ## biology help quick please!

We learned about many different animal phyla. How do scientists classify animals to determinewhich phyla they belong to? a. Adult Body Plan b. Embryological Development c. Animal Body Sized. d. Both a and b are correct

47. ## Math help? Someone help me?

Dewight needs to restrict the domain of the cosine function so that the inverse is a function. Which description best describes how she could restrict the domain? So that y = cos(x) is always decreasing So that y = cos(x) only has one maximum So that y =

48. ## Chemistry

We are given that the solubility product of platinum (II) sulfide is 9.9x10^-74 We are told to write a balanced equation for dissolving platinum (II) sulfide. I put : PtS(S) Pt^2+(aq) + S^2-(aq) and then we had to write the Ksp expression: Ksp=[Pt^2+][S2-]

49. ## algebra

Mrs. Little creates a boxplot for the test scores on her latest math test. She finds that the interquartile range is 20 points. What does this mean?

50. ## Calculus

Use washers to find the volume formed by rotating the region enclosed by: y=1.4−2|x−13| and y=0 about the y-axis

51. ## Statistics

Two cards are drawn in succession from a deck without replacement. What is the probability that both cards are greater than 2 and less than 8?

52. ## Social studies

Which of the following contributed to the collapsed of communism. In Europe

53. ## Statistics

A student is to answer 10 out of 13 questions in an exam. how many choices he has if he must answer at least 3 of the first

54. ## math

The first three terms of a geometric sequence are as follows. 32 , 16 , 8 Find the next two terms of this sequence.

55. ## Art History

Name the two major changes that affected european art in the eighteenth century. My art book doesn't exactly point out or focus on two changes. I would go with the French Revolution, but I'm not sure what the other change would be. After it talks about

56. ## Statistics

3 bolts and 3 nuts are in a box. 2 parts are chosen at random. Find the probability that 1 is a bolt and 1 is a nut.

57. ## Economics

1.Gross Domestic Product Explain the difference between nominal GDP and real GDP. 2.Unemployment Name and explain the three types of unemployment. 3.Inflation Name and explain the two types of inflation. Use the following information to answer the

58. ## Trigonometry

Hello, I want to know what the amplitude and the phase shift would be for this question to model the equation Q. A pendulum is connected to a rope 3 m long, which is connected to a ceiling 4 m high. The angle between its widest swing and vertical hanging

59. ## science

Atoms from area A are most likely to form ionic bonds with atoms from area? A. area a B. area d C.area c D. area b

60. ## English

1. Does Tom like pears? 2. No, he doesn't. 3. No, Tom doesn't. 4. Doesn't David like roses? 5. No, he doesn't. 6. No, David doesn't. ------------------------------- Do you mean all the answers are grammatical? Can we use #3 and #6?

61. ## physics

a cart is moving horizontally along a straight line with constant speed of 30m/s.a projectile is fired from the moving cart in such a way that it will return to the cart has moved 80m.at what speed,relative to the cart and at what angle to the horizontal

62. ## English

What two word are the most opposite in meaning hanker grovel hurtle and patronize

63. ## Calculus

Use cylindrical shells to find the volume formed by rotating the region in the first quadrant enclosed by: y=1.2-1.4|x-12| and y=0 about the y-axis

64. ## Art

An Art critic writes the following comment about the seventeenth century painting. "The Dutch is a master of light and composition." This statement is an example of what stage of critique? 1)describe 2)analyze 3)critique 4)judge I think #4 The reason I

65. ## Chemistry

A copper electrode weighs 35.42 g before the electrolysis of a CuSO4(aq) solution and weighs 36.69 g after the electrolysis has run for 20.0 min. What was the amperage (Amps) of the current used? this is the equation that i used is it correct (1.27g Cu x 1

66. ## Math

You have to answer 3 essay questions for an exam. There are 6 essays to choose from. How many different groups of 3 essays could you possibly choose?

67. ## Chemistry

A system has an initial energy of 117 joules. The energy equation includes --40.1 J of heat and -20.3 J of work. What is the final energy? Was heat added to the system or to the environment? Was work done by the system or to the system? Be sure to show all

68. ## Math

Start at 500. Create a pattern that subtracts 4 from each number. Stop when you have 5 numbers.

69. ## Physics

The density of the dead sea is 1.24x10^3 kg m^-3. A wooden board with an area of 2.5m^2 is dropped in the Dead Sea. Calculate the proportion that would float above the surface. Density of wood= 800kg m^-3

70. ## chemical reactions

Hector has a piece of pure substance that reflects light and bends or dents when dropped. if he takes it to a factory that makes electrical wires it could? a.be turned into wire because non-metals are ductile but not shiny b.not be turned into wire because

71. ## Rational number

7/11, -8/6, -6/8, 9/4, 27/25 arrange the rational number in ascending order

72. ## Statistics

a pair of dice is tossed. find the probability of getting a total of 8.

73. ## math!!

Three numbers are in an arithmetic progression; three other numbers are in a ge- ometric progression. Adding the corresponding terms of these two progressions yields 32, 26, and 32. The sum of the three terms of the arithmetic progression is 51. Find the

74. ## math

17. Lavina wants to buy a rocking chair for \$160. She'll pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment? A. \$27 B. \$24 C. \$26 D. \$16

75. ## Music

What is the note called that has 4 beats?

76. ## word problem

I have no clue on how to set up this equation please help. A car rental company offers two plans for renting a car. Plan A:21 dollars per day and 18 cents per mile Plan B:25.44 dollars per day and 15 cents per mile If you plan to rent the car for one day.

77. ## Physics

A motorboat is headed [W35ºN] with its engine set to move the boat at 25 km/h in still water. The current is flowing at 18 km/h [S]. What is the velocity of the boat relative to the shore? My work: cos(35º)=x/25 25cos35=x x=20km/h I have an issue with

78. ## SCIENCE CHEMISTRY

Use the atomic weight of carbon and chlorine to determine the theoretical value of the molecular weight of CH3OH Or methanol.( atomic weights (c=12, cl=35.5).

79. ## math

3 glasses A, B and C whose capacities are in the ratio 1:2:3 are filled with mixture of acid and water. The ratios of acid to water in A, B and C are 1:5, 3:5 and 5:7 respectively. The contents of these glasses are emptied into a single vessel. What is the

80. ## English

Throughout June, the class practices for the play in the classroom. (Circle thePreposition, Cross out the Prepositional Phrase(s)., Underline the Subject once and the Verb Phrase twice.)

81. ## Math

Q. Find the perimeter of each of the following squares if the area are (a)64cm square

82. ## Art History

Name four concepts or subjects on which Renaissance artists based their works. I wrote: religion, linear perspective, humanism, and classicism. I saw many different concept or art styles in that time period so I wasn't sure exactly what to put down. Is

83. ## Operating systems

Is there a Windows 3.5?

84. ## bonding types of compounds

which is an example of a covalent compound? a.some electrons in carbon dioxide function as valence electrons in both carbon and oxygen. b.ions in a bar iron are surrounded by a large number of valence electrons. c.silver ions are surrounded by a sea of

85. ## Probability theory

A baseball team has 4 infielders and 6 outfielders. How many ways can four fielders be sent in a game consisting of 2 infielders and 2 outfielders?

86. ## math

3 friends A,B,C started a business investing rs 5000,10000,7500.A left the business after 6 months while C invested 5000 more after 6 months. A profit of 9000 earned at the end of the year.profit of C is ???

87. ## S.O.S.

predict where an unknown element that has the properties would fit in the periodic table:it is has properties of a semimetal. and has somewhat reactive. A.group 1&2 B.group 18 C.the stair-step of line elements D.group 11&12

88. ## I don't get this math!

Sequences that increase at increasing rates are sometimes described as “growing exponentially”. However, this is not always a correct use of the word. For example, both quadratic (constant second difference) and exponential growth share this property.

In certain parts of the ocean the pressure of sea water, in pounds per square foot, at a depth of "d" feet below the surface, is given by P=13+ 4d/9 If a scientific team uses special equipment to measure the pressure under water and finds it to be 401

90. ## Calculus

Use cylindrical shells to find the volume formed by rotating the region in the first quadrant enclosed by: y=1.2-1.4|x-12| and y=0 about the y-axis

91. ## SCIENCE CHEMISTRY

Use the atomic weight of carbon and chlorine to determine the theoretical value of the molecular weight of CH3OH Or methanol.( atomic weights (c=12, cl=35.5).

92. ## Career Exploration

Many new familes from another country settle in a particular city. Jobs in that city for translators of that country's language are most likely to: A.) Be eliminated B.) Be expanded C.) Be moved to another country D.) Stay about the same Is the answer C?

93. ## College Alebra

Solve the following using system of equations. The sum of three numbers is 26. The middle number numerically is one more than three times the smallest number. The largest number is two times less than five times the smallest number. Find the three numbers.

94. ## math

Greg's age is 2 years more than 1/3 of steve's age. Molly is 5 years older than Greg. Which equation can be used to find Molly's age, m, based on Greg's age, g, and steve's age, s?

95. ## chemistry

plz help me with the frequency factor value and activation energy value of diammonium phosphate production.

96. ## Ms. Sue

how old are you Ms. Sue?

97. ## Physical science

What type of intermolecular forces exist in each liquid

98. ## Social studies

Directions; With your partner research events that occurred during each time period below. Use this information to make your illustrated timeline on separate blank paper. Your timeline might cover the entire 1800–1950 period or a part of that time. my

For each of the following explicit descriptions of a sequence, find a recursive description; for the recursive ones, find an explicit rule. Assume sequences start from n = 1. 1. an = 2n2 − 3n 2. a1 = 4 and an+1 = an + 2 3. a1 = −8 and an+1 = an 2 4. an

100. ## Physics

A ball is dropped from the top of the 9th storey building reaches the ground in 3 sec .find the height of the building

101. ## Statistics

In how many different ways can a chemistry book, a calculus book, a history book and a dictionary be arranged on a shelf so that the chemistry book or the history book appears first?

102. ## Probability theory

Your company plans to invest a particular project. There is a 5% chance that you will lose \$30, 000, a 40% chance that you will break even, and a 25% chance that you will make \$55, 000. Based solely on this information, what should you do?

103. ## Trig

The length of a rectangle is 142.9 in. If the diagonal makes an angle of 32.1o with this side, find the measure of the diagonal of the rectangle rounded to the nearest tenth of an inch. let x represent the diagonal.

104. ## algebra

For each of the following sequences, find an explicit and a recursive description of the pattern. Assume sequences start from n = 1. a. 1, -1, -3, -5... b. 8,2,3,9... c. -2, 0, 0, -2, -6...

105. ## Economics

Explain how each will impact the size of autonomous expenditure multiplier, other variables constant. (a) Decrease in marginal propensity to consume (b) Decrease in marginal propensity to import

106. ## Essay

I have written an essay that is a couple page. I used Grammarly to check for errors but it says there are a bunch of advanced errors. I want to fix those ones but don't know what they are or where to look. Is there a website I can use to find these errors?

107. ## science

the fence posts around a large pasture are 2.5m apart. a horse starts running west beside the fence. when the horse passes the fifth fence post, your second hand is on the 9.0 mark. when the horse passes the fourteenth fence post, the second hand is on

108. ## Science

If I live in Louisiana, what is an ecosystem near me?

109. ## Engeneering mathematics

how many litres of a solution containing 18 percent sulfuric asid and how many litres of another solution containing 25 percent sulfuric asid must mixed together to make 550 litres solution containing 23 percent of sulfuric acid

110. ## Math

Gina was training for a marathon. On the first day of her training, she ran 10 yards. On the second day of her training, she ran 10,000 inches. On the last day of her training, she ran 1000 feet. How much did Gina run in all

111. ## Math

Ronald lee has been told by a company that the he will be offered a job in the quality control department is 0.6 and the probability he will be asked to be foreman, if he is offered the job, is 0.1.What is the probability that he will be offered the job

112. ## Math

What is 7/2 into a proper fraction?

113. ## Math

You have a phone plan where mins are 25cents a piece you have a balance of 13.67 how many mins can you talk on the phone

114. ## Math

Joe spent .55 of his money in one shop and 2/5 of it in another, he then had €6 left, how much had he at first?

115. ## CHEMISTY

How would you prepare 30 mL of acetic acid/acetate buffer solution of pH = 5.06?. Assumeyou have 0.1M solutions of both acetic acid and sodium acetate {pKa(acetic acid) = 4.76}

116. ## Math

Is 14/6 bigger than 17/8?

117. ## Math

500 seat auditorium to generate 1,600 in tickets sales. They decide to set the price at \$2 for children. If the ratio of children to adults at museum activities is generally 3:2, what price should be set for adult tickets?

118. ## math

the ships leaves a port with a constant course and constant speed. after 2 hours the ship is 55miles south and 20 miles west of port. what is its course and speed?

119. ## Probability theory

If the probability of a newborn child is a male is 1/2, what is the expected number of male children in a family having 4 children?

120. ## maths

There were some boys and girls in the school hall at first. 40% of the boys and 10% of the girls left the school hall. As a result, 3/4 of the pupils remained in the school hall.There were 12 more girls than boys !@#\$%^&mained in the school hall. how many

121. ## Math

If a three digit number id formed from the digits 1, 2, 3, 4, 5, 6, and 7 with no repetitions, tell how many of this three digit numbers will have a number value between 100 and 500.

122. ## Work

i am primarily cream in color but speckled in grey. round is not my shape, nor is square. i am a loner in my environment. if i could speak, the stories i would tell.

123. ## Math

A rectangular flat screen TV has an area of 1200 square inches. If the longer side is two inches longer than twice the shorter side, find the dimaensions(length and height) of this flat screen TV.

124. ## English

posted by rfvv on Wednesday, May 3, 2017 at 1:10am. Dona is a female animal...... She doesn't like chocolate. ------------------------------ Does Dona like chocolate? 1. No, she doesn't. 2. No, she doesn't like chocolate. 3. No, she doesn't like. 4. No, it

125. ## math

Anna has \$15 more than Lala does. If I gave Lala \$60, she will have three times as much as Anna. Find how much Lala has at the first place?

126. ## Math

Solve by substitution: 2x= -y+3 5x-y=11

How does the aggregate expenditure multiplier change given a decrease in marginal propensity to import and marginal propensity to consume?

128. ## Math

How do I convert improper fractions into proper fractions?

129. ## Math

A rectangular TV has an area of 1200 square inches. If the longer side is two inches longer than twice the shorter side, find the dimensions (length and height) of this flat screen TV

130. ## Math

Four pencils cost \$0.60. How many pencils can you buy for \$0.45?

131. ## Math

ABC is a triangle in which B=90 if AB=6 BC=8 then calculate the length of the third side of the triangle

132. ## College Algebra

Use the quadratic formula to solve the equation: 2x^2=-5x-7

133. ## math

Estimate the sum to the nearest tens place 150+121+141+149=

134. ## Math

How do I convert improper fractions into decimals?

135. ## English

Dona is a female animal...... She doesn't like chocolate. ------------------------------ Does Dona like chocolate? 1. No, she doesn't. 2. No, she doesn't like chocolate. 3. No, she doesn't like. 4. No, it doesn't. (Which ones are correct answers?)

136. ## English

1. Peanuts grow in the ground. 2. Peanuts grow on the ground. (Which preposition is correct, 'in' or 'on'? Are both okay?)

137. ## Active math's

There are the consecutive number. First and third number is 72 .find the middle number.

138. ## Math

One bag contains 4 white balls and 3 black balls. If someone draws one ball from the bag and then replaces it and draws another, what is the probability that both will be black? A: 8/12 B: 9/49 C: 1/6 D: 3/7

139. ## algebra

-5.19(y-10)+6.1=3(y-6.6)+4.3 its asking for exact form,no decimals and simplified if possible. then asking for decimals rounded 4 places

140. ## Math

A firm selling type writers knows that four of its 100 type writers will not return properly and that five different ones have defective key.If none of the other type writers has a defect, what is the probability of a buyer selecting a defective type

141. ## Science

AN experiment discovered that a particular material was a poor conductor of electricity. This material would most likely be used as a(n) A. Conductor B. Insulator** C. Switch D. Resistor

142. ## Physics

trainA is moving at speed of 115 km/hr on a track on the same track 100 m away a trainB is moving at speed 25km/hr what should be the least retardation of trainA so that it doesn't collide? My answer is coming as 63 km/he but it's wrong please help?