# Questions Asked onApril 26, 2016

1. ## algebra

Please help!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle the math behind some

2. ## Language Arts

In Act 1, Scene 5, the young Scrooge’s beloved ends their relationship. She says, “Have I not seen your nobler aspirations fall off one by one, until the master—passion, Gain, engrosses you?”From this dialogue, what can you conclude is her reason

3. ## physics

A thin rod has a length of 0.25 m and rotates in a circle on a frictionless tabletop. The axis is perpendicular to the length of the rod at one of its ends. The rod has an angular velocity of 0.33 rad/s and a moment of inertia of 1.40 10-3 kg · m2. A bug

4. ## math

Maria has the following scores on exams in her social studies class 86, 75, 97, 58, 94, and 58 A. find the mean, median, and mode of the scores. B. Should Maria's social studies teacher use the mean, median, or mode of the exam scores to convince Maria

5. ## life orientation

1.identify your human rights violation and explain in an introductory paragraph why you choose the specific human rights violation 2.describe the three human rights violations and give at least two examples of such violations you found in your research

asked by sekgala lunkie
6. ## Math-probabilities

The table below shows the number of deaths in the U.S. in a year due to a variety of causes. For these questions, assume these values are not changing from year to year, and that the population of the United States is 312 million people. Cause Deaths

7. ## Algebra Help me Please

Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle

8. ## l.o

suggest six recommendation on how to address xenophobia in south africa

9. ## Chemistry

100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. Ans is 0.227M Who help me thanks a lot

10. ## Spanish

Which indigenous group is believed to have inhabited la Republica Dominicana before the arrival of the Spanish to the New world? a. Tainos*** b. Aztecs c. Zapotecs d. Incas

11. ## Language Arts

whose attitude toward scrooge is the most severe

12. ## spanish

what of the following is not true about palacio nacional 1. it contains a large mural that shows the history of mexico 2. it is located in teotihuacan 3. it is where the mexican president office is located

13. ## english

What does the author achieve by mixing exact and approximate numbers in "A Contribution to Statistics?" can someone explain what they want me to write I'm stuck.

14. ## Geometry

Can someone help me with lesson 10 unit 4 geometry test? 8th grade 1. Name a pair of vertical angles 2 and 5 2 and 6 3 and 4 5 and 6 2 if M 1 = 43 what is M 4 53 43 37** 27 If M 1 = 55 what a m 5 55 40 35 25**

15. ## Science

if you had a real thermometer that was accurate how could you modify your experimental thermometer to read actual temperatures

16. ## Science

An organisms particular role in its habitat is or when and how it survives is called its what? A.carrying capacity

asked by Senpai were all gunna die
17. ## ALGORITHM

Write an algorithm and flowchart that will accept score of 30 student in a class calculate and print the average mark in basic program.

asked by Musa Bilya
18. ## math

You are surveying students to find out their opinion of the quality of food served the school cafeteria. You decide to poll only those students who buy hot lunch on a particular day. Is your sample random? Explain? Can you explain me this im not sure if it

19. ## Statistics

Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (°𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (°𝐹) 𝑎𝑡 6 𝑝𝑚: 98.0,97.6,98.8,98.0 Assume the sample data are

20. ## Social Studies (please check Ms. Sue)

Please check this. Thanks! 1. After World War II, what type of laws did Congress concentrate on passing? a. civil rights*** b. homeland defense c. international alliances d. taxes 2. Which of the following tactics was NOT used by civil rights groups? a.

21. ## math

Explain how to write a function rule from the table below . Then write a function rule. table X } 2 , 4 , 6 Y } 1 , 0 , -1

22. ## life orientation

describe xenophobia taking place in a your community and give your own position in this isssue

23. ## science (URGENT!! CORRECT PLEASE))

(1) The inputs for cellular respiration are: A) Nutrients and carbon dioxide B) Energy and carbon dioxide C) Nutrients and oxygen D) Energy and oxygen ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ My Answer: B ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2) The outputs for cellular

asked by Yuno Gasai
24. ## Calculus

A spherical balloon is being inflated and the radius of the balloon is increasing at a rate of 2cm/min. At what rates are the volume and surface area of the balloon increasing when the radius is 5cm?

25. ## Anyone Help ASAP!!

During the Civil War, all of the battles and most of the population of Florida were' A.) in the interior of the state B.) in the north of the state C.) in the south of the D.) on the coasts of the state Everyone in family disagrees. My mom says B. I say D.

26. ## Maths

One half of a number added to itself is equal to 6

27. ## Language Arts

which of the following best explains how the author's use of flashback functions within the plot of the story? Im in connexus plz help

28. ## Social Studies

How was the Northern Renaissance similar to the Italian Renaissance? How was it different? Can someone help me or give me a link to something to help please.

29. ## math

The function rule C=10n+26 relates the number of people n who attend a small concert to cost in dollars C of the concert. Make a table of the input/output pairs to show the cost if 27, 39, and 43 people attend

30. ## Spanish

Las ninas _____ a montar a caballo. a. aprendimos b. aprendiste c. aprendieron*** d. aprendio

31. ## Math

Jamil spends 1/3 of his pocket money on sweets. He saves 1/9 of his pocket money. What fraction of his pocket money is left?

32. ## science

Calculate the emf of the cell CR|Cr3+(0.1M)||Fe2+(0.1M)Fe Given, E°Cr3+|CR = -0.75v E°Fe2+|Fe = -0.45v Cell reactn 2Cr(s)+3Fe2+(aq) -> 2Cr3+(aq)+3Fe(s)

33. ## Computer

Write an algorithm and flowchart that will accept 30 students calculate and print the average mark in basic program.

asked by Musa Bilya
34. ## math

How many lines of symmetry does this figure have? Draw as many as possible.

35. ## math

Jenny must sit four papers for an exam. The mean of the first three papers Jenny has sat is 72%. (a)If she wants to get an overall mean of at least 75%,what is the lowest mark she can get in her fourth paper? (b) What is the highest possible mean she can

36. ## math

The mass of a box with 6 tennis balls is 2 kg 40 g. The same box with 10 tennis balls is 3 kg 160 g. What is the mass of the empty box?

37. ## Science

2.)you had a real thermometer that was accurate, how could you modify your experimental thermometer to read actual temperatures?

38. ## Math

Find the minimum value of C = 4x - 3y using the following constraints. constraints to get the vertices. Plug the vertices into the objective function. Remember graph the

39. ## physics

A splash is heard 3.12s after a stone is dropped into a well 45m deep.the speed of sound in air is(g=10m/s2)

40. ## American history

How has globalization affected jobs in industrialized nations? A. Many manufacturing jobs have moved to less developed nations. B. Most of the jobs in service industries have moved to less developed nations. C. Pay for factory jobs has increased sharply as

asked by quick help needed
41. ## trig

A car is traveling at 34 miles per hour. If its tires have a diameter of 14 inches, how fast are the car’s tires turning? Express the answer in revolutions per minute and round to two decimal places.

42. ## math

What is 7 more than five times the number 9 divided by 15?

asked by preamatureshot ps3 name:]
43. ## Chemistry

What is the internal energy if system absorbs 100J of heat and does 50J of work on the surrounding?

44. ## english

the most dangerous game is mostly about

45. ## science

Calculate the EMF of the cell CR|Cr3+(0.1M)||Fe2+(0.1M)|Fe Cell reaction- 2Cr(s)+3Fe2+(aq)->2Cr3+(aq)+3Fe(s)

46. ## Biology

1. Fill in the five levels of human body organization. AND 2. Place the five examples below in order from largest to smallest: You, Stomach, Epithelial Tissue, Digestive System, Parietal cells. ~~~~~~~ I don't know the first one but I think that the second

asked by Astral Tellurian
47. ## trig

A car is traveling at 34 miles per hour. If its tires have a diameter of 14 inches, how fast are the car’s tires turning? Express the answer in revolutions per minute and round to two decimal places.

48. ## probabilities

A multiple choice test has 16 questions. Each question has 4 possible answers with only one is correct. Assume that all questions are answered and the probability to answer any question correctly is 0.25. Let X be the number of questions answered correctly

49. ## math

A body is thrown vertically upward from the ground with an initial velocity of 96 ft/sec. Find the maximum height attain by the body

50. ## English 4

In Sonnet 106, the speaker claims that earlier praise has prefigured, or _____, his love. A. molded**** B. created C. destroyed D. suggested

51. ## scte

a 90 volt Hz source is connected to 0.1 Henry inductor.what is the current through the inductor?

52. ## math

Nick estimated that 5/8 + 4/7 is about 2.Explain how you know his estimate is not reasonable.

53. ## math

A researcher tagged 40 giant turtles in 2008. In 2009, she returned and captured 50 turtles, 16 of which were tagged. In 2010, she returned again and captured 30 turtles, 8 of which were tagged. A. Use a proportion to estimate the turtle population for

54. ## chemistry

The combustion of 1.210 g of a mixture of CH4 and C2H6 gives 3.372 g of CO2 I have to determine the composition of the mixture (mastic %) and molar fraction of CH4 in the mixture CH4 + C2H6: CO2 + 2H2O C2H6 + O2: CO2 + H2O CH4 + C2H6 + 02: CO2 +H2O Thanks

55. ## Math

A box can hold 175 cubic inches of cereal. Of the box is 7 inches long and 2.5 inches wide, how talk is it ?

56. ## Literature

This quote from “I Hear America Singing” by Walt Whitman shows the poem is what kind? A. Lyric B. Haiku C. Couplet D. Sonnet

57. ## American history

Use the quotation and your knowledge of social studies to answer the following question. “Finally, in our progress toward a resumption of work we require two safeguards against a return of the evils of the old order; there must be a strict supervision of

asked by fast help needed
58. ## Chemistry

In the production of carbon disulfide (CS2), carbon (C) and sulfur dioxide (SO2) are reacted. If 8.00 g of sulfur dioxide reacts, how many moles of carbon dioxide are produced?

59. ## Literature

Is the following an example of a simile, metaphor, paradox, or personification? The younger she dresses, the older she looks. A. paradox B. simile C. metaphor D. personification

60. ## American history

Instead of using investments as a tool of U.S. foreign policy, Wilson’s “moral diplomacy” hoped to promote U.S. interests by A. supporting the social and national well-being of Latin American nations. B. establishing religious leaders in positions of

asked by quick help needed
61. ## Math

The ordered pairs (2,-21) and (5,-45) are solutions to which of the following equations? y = -8x - 5 y = -8x + 5

62. ## algebra 2

So the dead line for my class is coming up. And I really need help for these questions! 2. Elaine shoots an arrow upward at a speed of 32 feet per second from a bridge that is 28 feet high. The height of the arrow is given by the function h(t) = -16t2+32t

63. ## Chemistry

What volume of coffee (pH=5.0) would be required to have .25 moles of H3O+ ions? (must be two steps)

64. ## math

my son informed me that a comic book I purchased for 10 cents in 1948 is worth \$85. today what has been the average annual compound rate of return on that valuable asset

65. ## Social Studies

1) Why has relying on one crop or resource presented an economic problem for many Latin American nations? How have these nations been trying to solve this problem? 2) How might the cultures of Latin America be different if the Spanish and Portuguese had

66. ## geometry

A fish in an aquarium is 4 feet long. A scale model of the fish is 2 inches long. What is the scale factor?

67. ## AP Physics

A car with a mass of 1200 kg kg starts from rest and accelerates to a speed of 12 m/s in 12.2 s. Assume that the force of resistance remains constant at 328 N during this time. What is the average power developed by the car’s engine? Answer in units of

68. ## History

All of the following are examples of how geographical boundaries can limit cultural interaction except rivers deserts mountains oceans I think its A. since rivers are the easiest boundraies to pass through

69. ## maths

Find the nth term of this sequence 1,3,9,27,81

70. ## math

During a game, a basketball team scored 38 points worth of two-pointers, 33 points worth of three-pointers, and 8 points worth of free throws. How many shots did the basketball team make during the game?

71. ## Information Technology

What did Microsoft do to help prevent viruses like Melissa?

72. ## Arithmetic sequence

Three consecutive terms of an arithmetic sequence have a sum of 12 and a product of -80 .Find the terms. [hint : let the terms be x - d, x and x + d . ]

73. ## Math

Help Please. A wireless phone company offers two plans. In one plan, there is a monthly fee of \$40 and a charge of \$0.25 per minute. In the other plan, there is monthly fee of \$25 and a charge of \$0.40 per minute. For what number of minutes are the costs

74. ## Math

Jina is driving to Boston. Suppose that the remaining distance to drive (in miles) is a linear function of her driving time (in minutes). When graphed, the function gives a line with a slope of −0.95 Jina has 44 miles remaining after 34 minutes of

asked by Christine N.
75. ## maths

A man drives from ibadan to Oyo, a distance of 48km in 45 minutes. If he drives at 72km/h where the surface is good and 48km/h where it is bad, find the number of kilometres of good surface.

76. ## Math

A bag containing M&M'S contains 23 red, 54 brown, 15 yellow, and 9 orange candies. What is the probability of getting a yellow or orange M&M'S? my answer: 24/101 probability

77. ## Math

Kimmy's toy box is 3 feet tall, 6 feet long and the width is half of what it is tall. How many cubic feet of space are inside Kimmy's toy box?

78. ## computer science

Internet Service Provider An Internet service provider has three different subscription packages for its customers: Package A: For \$9.95 per month 10 hours of access are provided. Additional hours are \$2.00 per hour. Package B: For \$13.95 per month 20

79. ## Math

A \$30.00 pair of jeans is discounted 20%. If sales tax is 5%, what will be the final price of the jeans?

80. ## mental math

if 600 divided by 6=100 then 602 divided by 6 =n

81. ## History

Which land-form explains the lack of cultural interaction between ancient China and ancient India? a. the Loess Plateau b. the Chang River Valley c. the Gobi dessert d. the Himalaya Mountains It's most likely c. right?

82. ## LA 7

Which statement from "Why Do We Need Zoos?" best captures the author's point of view? 1. "...zoos were open to the general public, too, so everyone could find out about animals." 2. "Some people feel that there is lots of wild space and that animals should

83. ## Calculus

Two cars leave an intersection at the same time. Car X is travelling East at 50 km/hr and Car Y is travelling South at 60 km/hr. Find the rate at which the cars are separating after 30 minutes. I want its complete solution

84. ## SS

1. To all white Southerners, except Confederate leaders, Lincoln offered (1 point) amnesty. reconstruction. freedom. the Ten Percent Plan. 2. What agency helped freed African Americans by establishing schools? (1 point) Reconstruction Bureau Wade-Davis

85. ## Biology; PLEASE I NEED THIS ANSWERED QUICKLY!

1. Fill in the five levels of human body organization. ~~~ Not sure what it's asking for me to do. Is it asking for me to name the most important body systems? Because in that case EVERY SINGLE ONE comes to mind. Just need a simple explanation and I'll be

asked by Astral Tellurian
86. ## math

Find the resultant ir the sum of the displacement (1) 10m north west (2) 20m.30degree north of east (3) 35m due south

87. ## Math

diondre purchased a car for \$22000. assuming the value of the car depreciates at a rate of 6% per year, approximately what will be the value of the car after 6 years

88. ## Math-check my answers!!!

Check my answers please!!!! I really don't know how to do these but I tried my best 1. Simplify. 3x^2+ 5x-5x^2-4x+5-2 A.-8x^2-9x+3 B.2x^2+x+3 C.-2x^2-9x+3*** D.-2x^2+x+3 2. Add or Subtract.(8x – 2y) + (3x – 4y) A.11x+8y B.4x-y C.11x-6y*** D.5x+2y

asked by Jazmin G.
89. ## math

A stone is thrown upward and rises 9ft before starting to fell. Find the total time taken for the stone to return to the starting point

90. ## Algebra

A cord is cut into two pieces of different lengths. The sum of the two lengths is 12 centimeters, and the difference between the two lengths is 4 centimeters. Find the lengths of the two pieces of cord.

91. ## macroeconomics

11 - 7. (Fiscal Policy) Increased government purchases, with taxes held constant, can eliminate a recessionary gap. How could a tax cut achieve the same result?

92. ## Math

URGENT! an artist intends to paint a 60-square-foot mural on a large wall that is 18 ft wide and 11 ft tall. find the dimensions of the mural if the artist leaves a border of uniform width around it. Pls show me how'd you get your answer

93. ## Social Studies

How are the cultures of South America like the cultures in Mexico? How are they different? I just need one sentence of how they are similar and different. Thanks :)

94. ## Chemistry

I need help please. The question is vinegar, or a dilute of CH3COOH (acetic acid), should have a molarity of around 0.83 M. Using the Ka for acetic acid, what should the pH of vinegar be?? Thank you!!

95. ## Pre-Calculus

Determine the balance A for P dollars invested at rate R compounded N times per year for T years. Round each amount to the nearest cent P= \$1000, R=3% t=10 years N=A 2=? 4=? 12=? 365=? Compounded continuously=?

96. ## Math

The circular base of a cylinder has a diameter of its height is 5cm. Taking PI to be 22/7 find its volume

97. ## Math

Can someone please help me? I have one question I need help with. Thanks in advance. 4. Jayden opens a savings account with \$100.00. His account pays 4% simple interest. How much money will be in his account one year later if he makes no deposits or

asked by Quzzy Modo's brother
98. ## physics

a cube slides down a frictionless incline as shown and inelastically strikes a cube at the battom of the incline that's 1/2 (one-half) it's mass. The coeff. of restitution between the two masses is 0.7. If incline is 30 cm high and table is 90cm off floor,

99. ## Science

100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. Ans is 0.227M

100. ## algebra

a steamboat travels 9 km faster than a freighter. The steamboat travels 147 km/in the same time the freighter travels 120 km/ find the speed of each boat?

101. ## chemistry

At what temperature average speed of nitrogen will be same as the RMS speed of oxygen at 300 kelvin?

102. ## history

Why were interstate highways initially built a. To accommodate the increasing number of automobiles b. To make it easier for U.S citizens to travel from state to state c. To enable the quick movement of troops in case of the nuclear attack* d. To allow for

103. ## math

You are planning a vegetable garden and you lay out a rectangular design 10 feet wide by 20 feet long. After laying out the design you decide you want a larger garden and decide to increase the length of the garden by a length of 2x feet and increase the

104. ## chemistry

An enzymatic method for determining alcohol in wine is evaluated by comparison with a gas-chromatography (GC) method. the same sample is analyzed several times by both methods with the following results (% ethanol). Enzymatic method:

105. ## Social Studies (please check Ms. Sue)

1. Why were interstate highways initially built? a. to accommodate the increasing number of automobiles b. to make it easier for U.S. citizens to travel from state to state c. to enable the quick movement of troops in case of a nuclear attack*** d. to

106. ## math

the 10th,4th and 1st term of an A.P are the three consecutive numbers of a G.P and the sum of the 1st 6 terms ;take 4 as the 1st term

107. ## Complex Numbers

Let z and w be complex numbers such that |z| = |w| = 1, and zw is not equal to -1. Prove that (z + w)/(zw + 1) is a real number.

108. ## math

A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3. (a) Assuming that the kilometers per liter given by all mid-sized cars have a normal distribution, find a 99%

asked by Kapaki Katea
109. ## Physics

A block of weight 3.8 N is launched up a 30 ∘ inclined plane of length 2.20 m by a spring with spring constant 2.40 kN/m and maximum compression 0.10 m . The coefficient of kinetic friction is 0.50. f so, how much kinetic energy does it have there; if

110. ## chemistry

Suppose the ÄGof, ÄHof, and ÄSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all

111. ## Math

Two old friends meet. They hadn't seen each other in 22 years. Betty is 6 years older than France's, but neither is older than 50. The sum of their ages when they met is exactly half of their ages today. How old is Betty? B= F+6 B=50-22 =28 F =50 -22=28

112. ## Math

Solve: _/_*_+_*_*_/_+_*_=100 Using only numbers 1-9 in any order.

113. ## Stastics

Did I do this right and should i show more work? Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (°𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (°𝐹) 𝑎𝑡 6

114. ## SCIENCE

I mix 300.0ml of the barium nitrate solution from 1c with 100ml of a 1.50M lithium phosphate solution. The reaction produces solid barium phosphate a. Write a balanced equation for the reaction. b. Which is my limiting reagent? c. How much barium phosphate

115. ## math

Kelly drew a 10x10 grid. Richard drew a 16x16 grid. They each shaded 1/4 of their grids. Who shaded more squares? Why did they each shade a different number of squares?

116. ## Physics

Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 57.4 m of copper pipe whose inside radius is 7.52 x 10- 3 m. When the water

asked by Noodle man
117. ## language mechanics

A.(Well.I see we need some more pens.) B.(Well do you want to order a stapler?) C.(No;the tape dispenser is not there.) D.(No,the paper the paper clip box is not empty.) Need help

118. ## maths

An arithmetic series has first term 5 and a common difference 7 a) write down the 4th term and the 23rd term b) find the sum of the first 38 terms of this series.

119. ## math

Jennifer is playing a game that involved rolling a fair number cube. She rolled the number 2 twelve times. What is the best prediction of the number of times she will roll a 2 if she rolls the dice 100 times?

120. ## chemistry

Suppose the ÄGof, ÄHof, and ÄSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all

121. ## life orientation

list and discuss any 4 factors that could threaten or limit the core functions of the media

asked by rufaida khan
122. ## PHYSICS HELP DENSITY

An object hanging on a scale reads 24.0g when submerged in water, but 48.0g when submerged in oil (specific gravity 0.80) Find the density of the object.

123. ## math

Write an equation in slope-intercept form with slope (1/4) passing through (4/9),(67/36)

124. ## math

kimberly is making lemonade for her glass. she mixes 2 liters of lemonade and 3000 ml of strawberry juice, how many litres of lemonade will kimberly have

125. ## PRECALC

solve the equation 1. cos(θ) − sin(θ) = 1 2.2 cos(θ) tan(θ) + tan(θ) = 1 + 2 cos(θ) 3. sin(θ) cos(3θ) + cos(θ) sin(3θ) = 0 4. sin(2θ) cos(θ) − cos(2θ) sin(θ) = 1/2 5. cos(2θ) + cos(θ) = 2 6. cos(2θ) + sin2(θ) = 0

126. ## Chemistry

References Chapter 17: EOC Assume you dissolve 0.178 g of the weak acid benzoic acid, , in enough water to make mL of solution and then titrate the solution with 0.187 M . ( for benzoic acid = .) What was the pH of the original benzoic acid solution?

127. ## Math

19 students share 6 pizzas each need equal portions how much will each one have? I divided 6 pizzas into 8 pieces which gave me 48 pieces so 6/8 of a pizza

128. ## precalc

solve the equation cos(x) + sin(x) = 1

129. ## math

A cylindrical tank with diameter 20in. is half filled with water. How much will the water level rise if a metallic ball of radius 4 in. is placed in the tank?

130. ## PHYSICS HELP!

1. A 125-gram projectile strikes a 1.45 kg block that's attached to a massless vertical pole & becomes embedded in the block causing the bullet & block to swing upward. The overall length of the pole & the block combined is 1.1m. The bullet & block at the

131. ## Math

number obtained by interchanging the digits of a two digit number is less than the original by 18 and the sum of the digit ia 6. what is the original number ?

132. ## probabilities

Let X be a Poisson random variable with µ = EX = 0.4 and let Y be another random such that E[(2Y + 1)2 ] = 10 and E[(Y − 1)2 ] = 4 Consider the random variable Z such that Z = 3X + 4Y + 2. 1. Find E(X2 ), E(Y 2 ) and E(Z). 2. Suppose that X and Y are

133. ## probabilities

Suppose that a certain type of metalic tube contains on the average five defects per 900 feet. Let X be the number of defects per 900 feet 1. What distribution does X follows ? 2. What is the probability that a tube 900 feet long contains no defects ? 3.

134. ## Stastics

The UMUC bookstore states the average textbook costs \$119. A randomly selected sample of 26 new textbooks at the UMUC bookstore had a mean price of \$123.45 and sample standard deviation of \$15.23. Use a 0.05 significance level to test the claim that the

135. ## Logs

Determine the domain of the following functions, write answer using interval notation. T(x)=log12(x^2+14x)

136. ## Chemistry

Consider the reaction: 2H2+2NO->N2+2H2O. Initially 1.20mol of H2 and 0.95 mol of NO are placed in a container(all reactants and products are gases). If after 5 seconds the amount of H2 has been reduced to 1.02mol then how much NO is left and how much N2

137. ## L.A. 5th grade

What is the meaning of the prefix -ion in civilization? Also, check my work - Civilization prefix suffix and root Prefix - civ- citizen Suffix- ion - ?? Root- civilization- cultural location Plzzz ASAP!!!!!!

138. ## Chemistry

How many grams of MgCl2 would be required to make 440 g of magnesium ? The other product is chlorine.

139. ## Geometric series

Find the sum of the following series : a) 1 - 1/¡Ì2 1/2 - 1/2¡Ì2 ¡­to 20 terms.

140. ## Algebra

I lined up all of my pet snakes. The two pythons are 6 feet each. I also have three corn snakes that are all the same length. Altogether, my snakes total 21 feet. A. How long is one of the corn snakes? B.Write an equation that models this situation. Thank

141. ## Nursing

If I have a 69 in the class and I got a 33 out of 50 on the test and she giving 20 points what would be my grade?

142. ## Science

18 g of hydrochloric acid reacts with 15 g of calcium hydroxide produce calcium chloride and water.

143. ## Calc 2

Determine whether the series is convergent or divergent series symbol n=1 to infinity (n^2/(e^(3n))

144. ## Chemistry

Solution of formic acid (HCOOH) with a pH of 1.98. Find the molarity of the acid.

145. ## maths

The first four terms of an arithmetic sequence are 2, x-y, 2x+y+7 and x-3y where x and y are constants. Find the x and y and hence find the sum of the first 30 terms.

146. ## Math

an aircraft flew 2 hours with the wind. the return trip took 3 hours against the wind. if the speed of the plane in still air is 140 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air

147. ## Spanish

PLEASE HELP!! I'm confused because I know that the conjugated form for "yo" is digo, but I think it might be decir also because its translated as I have to tell the truth, and decir means "to tell." Yo tengo que _______ la verdad. decir dicen decimos digo

148. ## Geometry

The length of a radius is 10 inches. If the measure of one chord is 12in. and the measure of the other is 16in., how much closer to the center is the chord that measures 16 than the one that measures 12?

149. ## math

I need help for math

150. ## Math/Precal

How do i solve for x: (9^2x)/(27^x-2)=81^3x-4

151. ## Math

Solve for x 2 (3+x)= 5x+54

152. ## chemistry

How much heat must be removed from 75.0 grams of water at 90.0 degrees Celsius to cool it to 23.0 degrees celsius?

153. ## Stastics

In a study of proctored and non-proctored tests in an online course, researches obtained the data below: Group 1 (Proctored): 𝑛 = 30, 𝑥̅= 74.30, 𝑠 = 12.87 Group 2 (Non-proctored): 𝑛 = 32, 𝑥̅= 80.62, 𝑠 = 22.09 Use of 0.05 significance

154. ## Logs

Solve the equation and check your solutions. Note any extraneous answers. log(3x-13)=2 - log x

155. ## math

What is the missing coordinate that would make the following shape a rectangle? (4,8),(12,8),(12,16)? Edit

156. ## Linear Algebra

Let T : Rn-->Rn be a linear transformation, whose standard matrix is invertible. Show that if B = {v1, . . . , vn} is a basis for Rn, then {T(v1), . . . ,T(vn)} is also a basis for Rn.

157. ## math

a die is rolled in such a way that even faces are twice as likely to occur as the odd faces. what is the probability that a prime number shows up when rolled?

158. ## math

there are 7 runners on the track team.runners will be selected randomly for first,second,third and final positions on 4 member relay team. a)how many different relay teams can be formed? b)what is the probability that a runner at random is chosen to be in

159. ## Chemistry

How do i find the PH and pOH of 12.5ml of 15.8M HNO3 added to 400ml of 0.57M KOH

160. ## math

Mrs. Johnson is buying clay for her 20 art students. She needs 1 pack of clay for each student. There are 6 packs of clay in each case. How many cases does Mrs. Johnson need to buy to have enough clay for all her students? How many extra packs will she

161. ## chemistry

If the water in 500mL of 0.44M NaCl solution is evaporated, what mass of NaCl will remain?

162. ## probabilities

The random variable X has the Poisson distribution with parameter λ > 0. According to Chebeyshev’s Theorem, P(s < X < 99) ≥ 3/4. 1. Determine the value of k in the Chebeyshev’s inequality. 2. Determine the value of s

163. ## Mathematics

The total area of the shape is 182 cm2

164. ## Science

25 g of Iron (II) Oxide reacts with 25 g of Chloric acid to produce Iron (II) chlorate and water. a. Determine the limiting reactant b. Determine the excess reactant c. Determine the theoretical yield of water d. Determine how much excess reactant is left

165. ## science

how can I discuss how Mendeleev's periodic table relates with the modern one

166. ## Calculus

Along reservoir has the shape of a right circular cone having a radius of 40m at the top and a height of 10m at the centre. it is being filled at a constant rate of 40 m^3/min.Find the rate at which the water level is rising when the height is 5m?

167. ## Chemistry

How many grams of MgCl2 would be required to make 440 g of magnesium ?

168. ## Creative writing

i want to write a poem in the exam but don't have any idea about that. pls post a poem 10 to 14 lines long and a one with hard word meanings.

169. ## Math/Precal

The size of a decreasing population is given by p(t)=P0(2)^-t/7 where p(t) represents the population as time, t, in years and p0 is the initial population what percent of the original population will be there after 10 years??

170. ## probabilities

A radioactive source of material emits a radioactive particle with probability 1/100 in each second. Let X be the number of particles emitted in one minute. 1. Determine the probability distribution, the expected value and the variance of X. 2. Calculate

171. ## Math

A farmer wants to plant 80 acres of corn a soybeans in a ratio of 7 to 9. How many acres of each must he plant?

172. ## History

What could i say to someone to convince them to enlist in war? An example i thought of was saying how the patriotic fund will take care of ur family while ur at way, but i need moreee examples please help

173. ## algebra

A national home improvement store's revenue y (in millions of dollars) during the years from 1996 to 2007 is given by the equation y=15x+55 where x is the number of years after 1996. a)Use the equation above or a graph of the equation to complete the

174. ## Pre=Calc

Use composition to show that the given functions are inverses (You must show both compositions). Help? g(x)=x^2+3/2

175. ## Mathematics

if the area of the trainingle is 112cm2, what is the height, h, of the training

176. ## Stastics

Imagine a researcher presented a null hypothesis that in a certain community, the average energy expenditure of residents is at least 2,100 calories per day. He randomly sampled 100 residents in that particular community. He computed a negative test

177. ## math

What is the coefficient of x in (x^4 + x^3 + x^2 + x + 1)^4?

178. ## Chemistry

Rate of teaction depends upon a)Number of effective collision b)Concentration of the reactant c)Temperature d)All of these

179. ## maths

how many terms in the arithmetic series are needed to make a total of 204? 2 + 3.25 + 4.5 + .....

180. ## Mathematics

When 8 is added to 2 times a number the sum is 32.what is the number. Is it 16 or 4

181. ## math

1/2 x 1/2 x 5/6 =

182. ## Science

how does changing temperature affect inland and coastal areas? Please give me a brief explanation.

183. ## U.S. History (Check, Please!)(REED)

Write 2 paragraphs describing some of the race issues the United States dealt during WWII. A: The United States dealt with many issues during World War II. Most of these issues were race-related or involved racism. For example, when hordes of African

184. ## 7th Grade Math

Sarah has \$200 to spend. She buys a chair for x dollars and pays 6% sales tax. She has y dollars left. What equation models this situation? A. 200 - 0.06X = Y b. 200 - 1.06x = y C. 200 + 1.06X = Y D. 200 = 0.06X I chose answer A. Is that the correct

185. ## PHYSICS ROLLING MOTION!!!

A unicycle with a tire 44.0 cm in diameter travels 2.00 km. How many revolutions does the wheel make?

186. ## Computer science

I want to make my traffic lights run automatically without any user input. I have created this code so far but the images don't show up please help. My code: var lights=["red.jpg","redamber.jpg","green.jpg","amber.jpg"] var lightscentre= 0; var timer;

187. ## Math

How do i express y as a function of x Logy=1/3(logx-log27)

188. ## Stastics

In a study of proctored and non-proctored tests in an online course, researches obtained the data below: Group 1 (Proctored): 𝑛 = 30, 𝑥̅= 74.30, 𝑠 = 12.87 Group 2 (Non-proctored): 𝑛 = 32, 𝑥̅= 80.62, 𝑠 = 22.09 Use of 0.05 significance

189. ## probabilities

A weighted coin is flipped 200 times. Assume that the probability of a head is 0.3 and the probability of a tail is 0.7. Each flip is independent from the other flips. Let X be the total number of heads in the 200 flips. 1. What is the distribution of X ?

190. ## Chemistry

What is the pH change when 27.6 mL of 0.0920 M is added to 94.1 mL of a buffer solution consisting of 0.146 M and 0.174 M ? ( for ammonium ion is .) pH change =

191. ## Physics

Please help me solve this, most likely simple, problem. I am just starting to learn physics and am finding it very confusing. If you could include a key to explain any formulas used it would be very helpful thank you. I have calculated GPE to be 1500J but

192. ## Database

What is the CAP theorem? Give an informal explanation of why it is true. What are the consequences, in the form of design decisions, that must be made when developing a highly distributed Web application?

193. ## helpppp

Write an equation of the line passing through (3,21)and (-4,-35) in the form of A x + B y = C. Where A, B and C are real numbers

194. ## math

5/8 of Peter's money is 3.50, how much is his money?

195. ## maths

find the value of the sum 39+40+41+42+......+379+380

196. ## chemistry

When irradiated with a radiation of wavelength 58.4 nm the electron of H atom was ejected with kinetic energy 7.6 eV. Calculate the ionization energy.

asked by kamila t arakkal
197. ## life orientation

I want to know about 3human rights violations

198. ## math

jonathans picture has a perimeter of 38 inches. If the length of the paper is 11 inches what is the width

199. ## PreCal

An airplane is traveling at 575 mph in the direction of S 83 degree W. The wind is blowing at N 35 degree W. What is the actual speed and direction of the plane?

200. ## math

Using the simple interest formula, how much interest is charged on a 30 year \$100,000 house loan at 6%?

201. ## math

Using the simple interest formula, how much interest is charged on a 30 year \$100,000 house loan at 6%?

202. ## L.o

There will shotage of jobs

asked by Lebogang Theodora
203. ## Pre-Calculus

g(x)= x^2+7 Find the inverse of g(x) and state the domain and range for the inverse of g(x) using interval notation

204. ## math123

what is the slope, m, for this model