# Cindy

Popular questions and responses by Cindy
1. ## MATH

An urn contains 8 pink and 7 red balls. 6 balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all 6 balls drawn from the urn are pink? Round

2. ## Math

Polluted water flows into a pond. The concentration of pollutant in the pond at the t minutes is modelled by the equation c(t)= 9-90,000(1/10000+3t), where c is measured in kilograms per cubic metre. a) When will the concentration of pollutant in the pond

3. ## Math Analysis

what are the two critical points for r=4cos( 4(theta)) and its symmetries. As well as for r=2+2sin(theta)?

4. ## Chem

Copper(II) fluoride contains 37.42% F by mass. Use this % to calculate the mass of fluorine in grams contained 28.5 g of copper (ii) fluoride

1.Mr. Collins says he is proposing to Elizabeth because A. Elizabeth personality will displease lady Catherine B.Elizabeth has shown her affection for him C. he knows Elizabeth will inherit a lot of money D. as the heir, he feels responsible for the

6. ## Algebra

For a nonsmoker, the biological half-life of theophylline is 8 hours. Find the amount of the drug retained in a nonsmoker's system 18 hours after taking a one-unit dose. (Round your answer to three decimal places.)

7. ## geometry

A triangle has side lengths of 18 cm, 80 cm, and 81 cm. Classify it as acute, obtuse, or right

8. ## Algebra

Find the next three terms in the sequence? -6,5,16,17 A 38,49,60*** B 37,47,57 C 36,45,54 D 36,46,57 3 What are the first four terms of the sequence represented by the expression n(n-1)-5? A -7,-5,-3,1 B -5,-10,-15,-20 C 0,2,6,12 D -5,-3,1,7*** 6.Given the

9. ## physics

A garage lift has input and output circular pistons with diameters of 1 cm and 45 cm respectively. The lift is used to hold up a car with a weight of 1.7×103 N. What is the force on the input piston and what pressure is applied to the input piston

10. ## geometry

Find the image of O(–2, –1) after two reflections, first across the line y = –5, and then across the line x = 1. (1 point)

11. ## physics

A rectangular loop of wire is placed next to a straight wire, as shown in Fig. 20–55. There is a current of 3.5 A in both wires. Determine the magnitude and direction of the net force on the loop

12. ## math

You are paid \$8.55/hr at your part-time job. You work 10 hours per week. You are considering working a part-time job for \$6.25/hr, and it pays tips. You will earn an average of \$3.00/hr in tips. If you work the same 10 hours at the new job, how much more

13. ## Math

A committee of 5 people is to be formed from a group of 7 women and 4 men. How many possible committees can be formed if: the committee then must chose a president and a vice president, how many ways could these two positions be chosen? why is it

14. ## math

how do i translate: the sum of a number times 5 and 29 is at most 23 into an inequality sentence number

15. ## Science

Use Newton’s first law of motion to explain how wearing a seat belt in a moving car could help prevent injury.

16. ## physc

the disadvantages of group intelligence tests include thats: a. all test takers must wait until all registered individuals arrive. b. proctors are often insonsistent and allow some test takers a longer time to respond or to take testing breaks. c. some

17. ## Chemistry

What is the molality of a glucose solution prepared by dissolving 18.0g of glucose, C6H12O6 in 125g of water? A)0.000794 B)0.144 C)0.699 D)0.794 Molality is the number of moles of solute per kilogram of solvent. Because the density of water at 25°C is

18. ## Chemistry

For the following chemical reaction, how many moles of lead(ii)iodide (PbI2) will be produced from 8 mol of potassium iodide (KI)?

19. ## physics

An SUV with a mass of 1.80×103 kg is travelling eastbound with a speed of +15.0 m/s, while a compact car with a mass of 9.00×102 kg is travelling westbound at -15.0 m/s. The vehicles collide head-on and stick together. What is the speed of the wreck

20. ## physics

A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 86 kg. A person pushes on the outer edge of one section with a force of F = 61 N that is directed perpendicular to the section. Determine the

21. ## Physics

A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 130 N at an angle of 30.0° above the horizontal. The box has a mass of 24.0 kg, and the coefficient of kinetic friction

22. ## geometry

The area of a regular octagon is 35 cm2. What is the area of a regular octagon with sides six times as long? so do you times this by 6?

23. ## geometry

What translation rule can be used to describe the result of the composition of (x, y) (x – 9, y – 2) and (x, y) (x + 1, y – 2)? I am stuck can you please explain

24. ## geometry

Write the equation for the vertical line that contains point E(8, 6).

25. ## Chemistry

a)What mass of water is produced from the complete combustion of 2.30×10−3 g of methane? b)What mass of oxygen is needed for the complete combustion of 2.30×10−3 g of methane? This is the unbalanced equation given: CH4+O2->CO2+H2O

26. ## Mathematics

A recipe for cookies requires 2/3 cup of butter.Rama wants to make 3/4 of the recipe.how many cups of butter should rama use to make the cookies?

27. ## Economics

Assume that a local bank sells two services – checking accounts and ATM card services. Mr. Done That is willing to pay \$8 a month for the bank to service his checking account, and \$10 a month for unlimited use of his ATM card. Ms. Been There wants to pay

28. ## MATH

20% books in the library is fiction books and the rest were non fiction books.when 30% of the fiction book and 15% of non fiction books were borrowed,there were 1132 books left.How many books was borrowed?

29. ## Math/ Algebra 2

How many different ways can the letters in the word COMBINATIONS be arranged if the letter C is first and the letter S is last? Thank you in advance ^^

30. ## geometry

Find the area of a regular pentagon with a side of 6 ft. Give the answer to the nearest tenth. ok can't remember how to do this

31. ## geometry

totally stuck can someone help please P P'(–8, –3) for the glide reflection where the translation is (x, y) (x –2, y –5) and the line of reflection is y = –x. Find the coordinates of P.

32. ## geometry

The length of the hypotenuse of a 30°-60°-90° triangle is 12. Find the perimeter.

33. ## geometry

ok what is the value if x (2x+24) degrees on the top of the lines that form a X and on the other side of the angle is 142 Degrees.. I know you have to have 180 degrees but those x's confuse me. I have this figure out and narrowed down to two answers....

use >

35. ## organic chemistry

write a balanced equation for the reaction of benzoic acid with 3 M sodium hydroxide solution

36. ## Geometry

What is the measure of a complement and supplement of an angle measuring 6.3 degrees

37. ## Psychological Statistics

TRUE OR FALSE. The Pearson correlation between X1 and Y is r = 0.50. When a second variable, X2, is added to the regression equation, we obtain R2 = 0.60. Adding the second variable increases the variability that is predicted by the regression equation for

38. ## geography

The lengths of two sides of a right triangle are 12 inches and 15 inches. What is the difference between the two possible lengths of the third side of the triangle? Round your answer to the nearest tenth.

39. ## Test-Taking Strategies

Please check my answers! Please Check if they are wrong please tell me! Thanks! Only 2 questions! 1: Which of the following is a good way to approach answering an essay question and a test? a.) Start writing your answer as soon as you have read the

41. ## Grammar

Can someone help with periods and commas? Select the correctly punctuated sentence. A) If you have any further comments or questions, please do not hesitate to contact me. B) If you have any further comments or questions please do not hesitate to contact

42. ## Precalculus

A doughnut shop at a shopping mall sells a dozen doughnuts for \$2.95. Beyond the fixed costs of \$150 per day, it costs \$1.45 for enough materials and labor to produce each dozen doughnuts. If the daily profit varies between \$50 and \$200, between what

43. ## Chemistry

How many milliliters of a 0.75 M HCL solution do you need to obtain 0.0040 mol of HCL?

44. ## stats

A random sample of 40 men drank an average of 20 cups of coffee per week during examination final, with the population standard deviation equal to 6 cups. A lower limit of an approximate 95% confidence interval the population average cup of coffee is (1)

45. ## Science:chemistry

Chlorine + sodium iodide does it react if it does what is the product of the reaction

46. ## Math

Terre haute to Indianapolis to Bloomington measures 3 cm on the map..what is the actual distance?

47. ## Math

There are four children in a family. The sum of the squares of the ages of the three youngest children equals the square of the oldest child. How old are the children?

48. ## Bio

How much solute is required to make 600mL of a 0.4 M solution of Tris buffer? FW of Tris Buffer= 121.1g Work: Molarity equation= moles of solute/ liters of solution Step 1: 121.1 g / 121.14 g/mol TB = 0.9996 mol TB Step 2: Molarity Eq'n= moles of solute/

49. ## math

Eight sided dice can be described as two square based pyramids stuck together at the bases. Their faces are equilateral triangles. If the edge of one die is 2mm, find the difference in materials cost between a solid gold die and a “gold” painted

How is grandmother's dream different from reality? Last night I dreamed of an old lover I had not seen him in forty years. When I awoke, I saw him on the street. His hair was white, his back was stooped. How could I say hello? He would have puzzled all day

51. ## algebra

Find the perimeter of the triangle whose vertices are the following specified points in the plane? (0,-3), (-2,1) and (-4,6)

52. ## Science

1.) Use Newton’s first law of motion to explain how wearing a seat belt in a moving car could help prevent injury. 2.) A skydiver prepares to jump out of a plane. Explain how gravity and air resistance will affect the motion of the skydiver before and

53. ## Math

A college student is using the following model to determine the total number of text messages she will have in the inbox in her cell phone, if she does not delete any of the current messages or future messages she receives in the next x days. In the model,

54. ## MATH

How do the principles of convection, conduction, and radiation explain how the water in the saucepan gets hot?

55. ## Chemistry

25cm^3 of a gas containing only nitrogen and oxygen decomposed to form 25cm^3 of nitrogen and 50cm^3 of oxygen. All the volumes were measured at the same temperature and pressure. Write an equation for the reaction.

56. ## Chemistry

Potassium-42 has a half life of 12.4 hours. How much of an 848 g sample of potassium-42 will be left after 62.0 hours? Please help me!!

57. ## Pre Algebra

If you have 256 ft of fence for your yard. The lenth is 12 feet longer than twice the width. What are the dimensions?

58. ## math

please help! You are paid \$7.45/hr at your part-time job. Your deductions are FICA (7.65%), federal tax withholding (10.65%), and state tax withholding (5.7%). Your travel expenses are \$5.70 per day worked. You work 12 hours over a 3-day period of time.

59. ## physics

Find the mass in grams of a carbon dioxide molecule.

60. ## consumer math

I really need help please Your primary job’s gross income is \$3,500.00/month, and your second job’s realized income is \$368.49/month. Deductions are FICA (7.65%), federal tax withholding (10.75%), and state tax withholding (8.35%). How much is the

61. ## Medical Terminology

PROCEDURE: The patient was prepped and draped in the usual sterile fashion. Examination of the vocal cords in a sitting position revealed a polypoid growth in front of the left false vocal cord with erythematous base and yellow- colored tip. Vocal cord

62. ## geometry

The endpoints of are A(9, 4) and B(5, –4). The endpoints of its image after a dilation are A'(6, 3) and B'(3, –3). can you please Explain how to find the scale factor.

63. ## geometry

what is the resultant of the two vectors as an ordered pair? and 5,-5> Thanks

64. ## geometry

I totally don't understand Vectors How do you describe a vector as an ordered pair? on the x and Y where they cross it is 41 degrees and goes to the left up to the y 77 I am totally confused Help

65. ## Grammar

Agreement questions. 1. A number of small bruises __________ present upon examination. A) was B) were 2. A) The patient was brought to the operating room, and we induced general endotracheal anesthesia, and then prepped and draped in the usual sterile

66. ## algebra

Find the value of - 18 + | -12|

67. ## trig

Prove that sin squared 20 degrees+sin squared 40 degrees+ sin squared 80 degrees is equal to 3/2

68. ## math

A wooden pyramid, 12 inches tall, has a square base. A carpenter increases the dimensions of the wooden pyramid by a factor of 5 and makes a larger pyramid with the new dimensions. Describe in complete sentences the ratio of the volumes of the two

69. ## physcial science

How to solve for Jane (mass 40 kg),standing on slippery ice, catches her leaping dog (mass 15 kg) moving horizontally at 3 m/s. What is the speed of Jane and her dog after the catch?

70. ## algebra

bobs garden is a 20 ft times 10 ft rectangle . bob plants tomatoes in half of his garden :radishes in 1/4 of the remander ,then cucmbers in 1/2 of what is left the last area is planted in peppers . what part of the garden is planted in peppers?

71. ## chemistry

How many grams of calcium nitrate, Ca(NO3)2, contains 24 grams of oxygen?

72. ## math

franklin school has 3 boys for every 4 4 girls in fifth grade . there were 140 students in the fifth grade. A.how many are boys B.how many are gorls

73. ## psychology

An experimenter wants to find out if drinking coffee makes people more alert. The amount of coffee a person drinks is the: hypothesis. dependent variable. independent variable. correlation coefficient.

74. ## chemistry

Explain why a suspension is considered a heterogeneous mixture.

75. ## spanish

How do I answer these negatively like they already happened Va a viajar a Perú tu primo Andrés? Va a pagar las sandalias María en la caja? Van a regatear con el vendedor Mónica y Carlos? Va a pasear por la playa tu abuela?

76. ## chemistry

Determine how much heat is evolved or absorbed when 20.0 of lithium iodide completely dissolves in water.

77. ## Word Scramble HELP

Please help to unscramble this word (Nereteo). It is related to a Woodstock themed Word Scramble for a retirment party. None of us on the organizing committee can figure this one out!! HELP!

is this a sentence the dog rolled in a mud puddle the dog is rolling in a mud puddle

79. ## ART HISTORY

Romantic sensibility considered nature lonely, eerie, thrilling and even terrifying. true or false I believe it is true

80. ## general ability

Richard's age is equal to 3 times what it will be in 3 years time, minus 3 times what it was 4 years ago. How old is he? a) 20 b) 21 c) 22 d) 23

81. ## Chemistry

The Boltzman formula is S=k In W. A perfect crystal has a molar entropy of 0 at absolute zero because. W=O W=1 W=Na k=1 K=r/Na Why don't you try substituting W = 0 and W = 1, take the ln and see what you get.

82. ## Math!!

Sally deposited \$3600 and the annual rate of interest is 6.5%. What is the interest amount for a 30-month period? I = prt. I = amt of interest p = principal r = rate (0.065 per year) t = time in years = 2.5 years I = 3600*0.065*2.5 = ??

Gina traveled 450 miles to her grandmother's house in two days. She traveled 50 more miles on Saturday than on Sunday. How many miles did she travel on Saturday? on Sunday? What does 200 + 250 add to? 450 Lauren collected 150 nickels and dimes. She has 70

84. ## math

Plot points on the number line to represent all whole number values that round to 200 when rounded to the nearest hundred and to 150 when rounded to the nearest ten.

85. ## physics

Consider what happens if I drive toward the clock tower on a day when the speed of sound is 345 m/s . Assume I approach the stationary clock tower at a speed of 15.0 m/s when it rings the 7.50 × 10^2 Hz bell. Calculate what frequency I will hear. 5) Now

86. ## physics

In lab you learned to calculate the depth of water based on the time it takes for a sound wave to travel to the ocean floor and back, assuming that sound travels at a speed of 1500 m/s in the ocean. If I conducted the same test above the Mariana Trench,

87. ## physics

On a summer day, when the temperature outside is 30.0 °C, I hear a 7.50×10^2 Hz bell from the clock tower at URI, which I know is 2300. m away from my house. a) Calculate the speed of sound in air on this day. b) Calculate the wavelength of the sound. c)

88. ## Geometry

Which drawing shows the construction of a perpendicular bisector that is congruent to the solid line segment

89. ## Math

Thx. So 2(2 - 2k) = 3k...?

90. ## Social studies

What is the purpose of primaries and caucuses? Electing the president electing the members of Congress determining party delegate votes or determining Electoral College votes

91. ## Social studies

Does Asha's nation have a limited or an unlimited government

92. ## Science

Flying an airplane at 500 km/h, a pilot plans to reach her destination in 5 h. But she finds a jet stream moving 250 km/h in the direction she is traveling . If she gets a boost from the jet stream for 2 h how long will the flight last?

93. ## History

1.Which of the following decisions best shows the US governments willingness to participate in the global economy? A.relocating domestic jobs to foreign countries B.joining the World Trade Organization C.decreasing spending in international markets

94. ## Grade 4 Math - fractions

On pet day, 18 children brought a pet to school. Two-thirds of the pets were dogs. One ninth of the pets were cats. How many were dogs? How many were cats? How many animals were neither dogs nor cats?

95. ## biology

you added 3ml stock solution of 0.05mg/ml of dye and 7ml of water, what will be the final concerntration.

96. ## science

you added 2ml of protein, 3ml of water, and 4ml of dye. how will you prepare blank for the experiment

97. ## Chemistry

Ammonium nitrate is an oxidizing agent and can give rise to explosive mixtures of mixture of two moles of powdered aluminum and 3 moles of ammonium nitrate crystals react exothermically yielding nitrogen gas water vapor and aluminum oxide how many grams of

98. ## Physics

If the pole-vaulter were to land on concrete rather than on a cushion, the impulse that stops the fall would be what? A) Greater because of the rigidity of the concrete. B) Greater because of the force of impact is greater. C) The same because impulse is