Questions Asked on
October 14, 2015

  1. Chemistry

    A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 827 J of heat from its surroundings and has 0.66 kJ of P−V work done on it by

    asked by Tanner
  2. algebra

    Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's

    asked by alex
  3. chemistry

    Am I correct? Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is:

    asked by patrick
  4. english

    what sentence pattern is are there any more cookies in the jar

    asked by Anonymous
  5. science

    A heat engine draws 800J of heat from its high temperature source and discards 450J of exhaust heat into its cold temperature reservoir during each cycle.How much work does this engine perform per cycle?

    asked by MARK
  6. differential calculus

    a man 6 ft tall is walking toward a building at the rate of 4 ft/sec. if there is a light on the ground 40 ft from the building, how fast is the man's shadow on the building growing shorter when he is 30 ft from the building?

    asked by jordan
  7. reading

    What is the root prefix and suffix for barren? I think for prefix it it none and no suffix and root is barren am i correct?

    asked by 🐶
  8. English Comp.

    (1) After Sean was arrested for breaking into a pawnshop, I began to wonder. (2) Why did some kids from my neighborhood end up in trouble while most of us didn't? (3) I started out with a question: What causes young people to make bad choices? (4) Now,

    asked by Jasmin
  9. Grade 4 Math

    Ali has a bag of marbles, if he puts them into groups of 7, then there are 5 marbles left over. If he puts them into groups of 8, then there are 2 marbles left over. How many different answers can you find if the bag has fewer than 300 marbles?

    asked by Annon10
  10. algebra

    solve by subsitution 2x+y=9 8x+4y=36

    asked by kathyu
  11. Physics

    Two blocks M1 and M2 are connected by a massless string that passes over a massless pulley as shown in the figure. M1 has a mass of 8.25 kg and rests on an incline of 73.5°. M2 rests on an incline of 15.5°. Find the mass of block M2 so that the system is

    asked by meg
  12. kite

    the sixth term of an arithmetic progression is 21 and the sum of the first 17 terms is 0. write the first three terms.

    asked by chalton
  13. MATH

    find the like terms in the expression y+ 1.2y + 1.2z. A y and 1.2y B 1.2y and 1.2z C y and 1.2z D y,1.2y, and 1.2z Simplify 2 + 17x - 5x + 9 A 19x + 4 B 12x + 11 C 22x + 11 D 15x - 4 simplify 3(5y+6)-4 A 11y + 14 B 11y + 18 C 15y + 14 D 15y + 2 Factor 81 -

    asked by Deez Got Hee
  14. language arts

    in ¨Harriet Tubman¨ what main idea do the details about William still´s records support? A) the fugitives´ trip north was difficult. b) the escaping slaves were not able to carry much with them as they traveled north. c) Harriet Tubman was justified i

    asked by Ana
  15. cultural diversity

    Which is NOT a strategy that can be implemented by a teacher to understand a family’s goals for his or her child’s linguistic development? A. The teacher can create a parent survey. B. The teacher can assume each family has the same goal for their

    asked by Lauren
  16. Geometry plz help its not to hard

    18. Two lines intersect at a point. the vertical angles formed are supplementary. What is the measure of each of the angles? Explain.

    asked by Jimmy
  17. College/Career Math

    You choose a tile at random from a bag containing 5 tiles with A, 9 tiles with B, and 4 tiles with C. You pick a second tile without replacing the first. Find each probability. P (A then C) P (C then B)

    asked by Bethanie
  18. math

    solve by substitution 7x-2y=35 x-4y=5 2x+y=9 8x+4y=36

    asked by kathyu
  19. language arts

    which sentence uses the future tense of the verb to go correctly? a) she has gone to Paris only once. b) she is going to Paris this season c) she will go to Paris next autumn. d) she´s been going to Paris for years. which of the following words or phrases

    asked by Ana
  20. Math

    200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B, and 21 of blood group O. What is the probability that a randomly chosen student has either blood group A or blood group B? A)

    asked by Hailey
  21. Math

    Building A is 190 feet shorter than Building B. The total height of the two buildings is 1520 feet. Find the height of each building.

    asked by David
  22. chemitry

    how many grams of hydrogen sulfide will react completely with 12 grams of oxygen?

    asked by cora
  23. Chemistry: Equilibrium

    So, I think I'm doing everything right and even checking my math, but it keeps showing up as wrong. If someone can help me and go into detail,including the quadratic formula, I would appreciate it: Phosphorus pentachloride decomposes according to the

    asked by Jessica
  24. maths

    amit is 32 years younger than his father. 4 years ago his age was one fifth of his father age. find their present ages.

    asked by shehzad
  25. Math

    What is -^90 to nearest integer? A. 3 B. -5 C. 7 D. -9 I'm not sure how to get the answer. Can anyone help?

    asked by Amber
  26. math statistics

    Convert Ken's chest, waist, and hips measurements to z-scores. Which of these measures appears to be the most different from kens reference group(human males)? Justify with an appropriate statistical argument. Ken's chest=75.0,waist=56.5,hips=72.0 Human

    asked by zan
  27. Chemistry

    A 0.179 g sample of a vitamin C tablet was titrated with 0.1000 M NaOH according to the procedure in this experiment. The titration required 7.08 mL of NaOH solution. How many moles of NaOH were used in the titration? How Many moles of Vitamin C were in

    asked by Anonymous
  28. Physics

    Resolve a force of 23 N at 180 degrees and a force of 47 N at 270 degrees.

    asked by Jason
  29. physics

    a force of 100.0N act in a direction at an angle of 45 degrees with the x axis. What is the magnitude of the x component of force. I got 70.7 but I think I am wrong can you tell me

    asked by cody
  30. Statistics

    for a population with m=62 and s=12, find the x value that corresponds to esch of the following z-scores: -0.25,-1.50,0.50,2.00

    asked by Gloria
  31. Logarithm help please

    The intensity, I, of light passing through water can be modelled by the equation I=10^1-0.13, where x is the depth of water in metres. Most aquatic plants require a light intensity of 4.2 units for strong growth. Determine the depth of water at which most

    asked by Joe
  32. Physics

    Gun fires at 400m /sec.What is the range of the gun shen elevated at an angle of 30 degrees.

    asked by Carlene
  33. math

    Suzanne bought 50 apples at the Apple orchard.she bought 4 times as many red apples as green apples. How many more red apples than green apples did Suzanne buy?

    asked by debra
  34. Probability

    In a gambling game, a man is paid 400 if he draws a jack or queen and 500 if he draws a king or ace from an ordinary deck of 52 playing cards. If he draws any other card, he loses. How much should he pay to play if the game is fair? My answer is 138.46. Am

    asked by Jen
  35. Biology

    Cite a way the excretory system helps maintain homeostasis, besides removing wastes,water,carbon dioxide, and salts.

    asked by Cassie
  36. Math

    Mr. Youn has 30 times as many pencils as Jack. The whole school has 200 times as many pencils as Jack. If Jack has 2 pencils, how many pencils do the following have?

    asked by Anonymous
  37. 7th Grade Maths

    If Betty can jog 1500 metres in 10 minutes, how long will it take her to jog 10 Kilometres? PLEASE HELP ME IN THIS QUESTION I NEED IT HELP MEEEEEE!

    asked by Tori
  38. science

    Covalent compounds are bad conductors of electricity.Why?

    asked by sujal
  39. Chemistry

    Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the final pressure in torr after mixing, if initially H2 is in the first flask (Volume = 4.000 L) at 271.8 torr and

    asked by Help123
  40. physics

    A 5 kg box is sitting on a table. Bob's hand is pushing down on the box with a 12 N force. Find the normal force on the box. (draw this)

    asked by Beverly
  41. Physics

    You are pulling handle of a wagon with a force of 270N. The handle makes an upward 35 degrees angle with the ground. The loaded wagon has a mass of 95kg. 1.what is the weight of the wagon? 2.How much of your applied force pulls the wagon forward? 3.what is

    asked by Anonymous
  42. algebra

    0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. I am re posting again because i need more help then what i got because i don't understand

    asked by cheyann
  43. Chemistry

    I have a metal sheet of indium, and when a uv light with a wavelength of 265 nm is shone on it the surface ejects electrons that have a kinetic energy of 8.31x10^-20 J per ejected electron. I'm asked to find the threshold frequency, I need to know how to

    asked by Alyssa
  44. Math

    The passenger bus starts out and travels at 65 kilometers per hour. three hours later, a car starts out from the same place and overtakes the bus in 8 hours and 40 minutes. what is the rate of the car?

    asked by Chen
  45. History

    7. all of the following were reasons behind the creation of the georgia colony except charity defense religion economic 8. which statement does not correctly describe james oglethorpe? he worked to reform prisions in england. he opposed laws that placed

    asked by HELP PLZZZ
  46. Math

    If Phong paints 1 square yard in 2 minutes,how long will it take him to paint a fence that is 3 feet tall and 30 feet long?

    asked by Anonymous
  47. Math

    A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a blue marble and then another blue marble, assuming you replace the first marble? A)1/24 B)1/16 C)1/2 D)3/4 D? or C? Sarah rolls a die twice.

    asked by Hailey
  48. English

    To face life’s crises with courage and faith, everyone needs to feel connected to others to feel pride in his/her purpose, and to believe that overcoming the problem is possible. Provide evidence from the text to support the theme in red above. Please

    asked by ahboogala
  49. washighton

    why is 2,482 not a reasonable answer for 542 times 6

    asked by adlinvelez
  50. Language arts

    Clayton enjoyed listening to the suite at the concert, so he went home and downloaded the music As it is used in the sentence above, suite is to _______ as book is to author. Notes Audience Rhythm Composer I can't choose between C and D

    asked by Shalee ^~^
  51. chem

    A student mixes 5 mL of 2.00 x 10^-3 M Fe(NO3)3 with 5 mL 2.00 x 10 ^-3 M KSCN. They find that in the equilibrium mixture concentration of FeSCN^2+ is 1.40 x 10^-4 M. Find each of the following: the initial concentration in solution for Fe^3+ and SCN, the

    asked by Grant
  52. AP Physics

    You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 6 m at your feet, then a horizontal shelf of 10 m , then another drop of 4 m to the bottom of the canyon, which has a horizontal floor. You kick a 0.49

    asked by MJay
  53. science

    Which variable in the following statement would be placed on the Y-axis of a graph? If the amount of light increases, then the plants will grow taller.

    asked by Anonymous
  54. Algebra

    -4(-3x+w)+6(-6w+2x)

    asked by Maria
  55. Maths

    A woman is 3 times as old as her daughter.six years ago,the sum of their age was 36.find the daughter's age.

    asked by Isabelle
  56. Math

    1. Order the numbers from least to greatest. (1point) 5^-3,4/7, sqr 5, 3/8,0.003 My answer: 0.003,4/7,3/8,5^-3,sqr 5

    asked by Kyana Lee
  57. MATH

    Where is the number √6 located on a number line? A. between 3 and 4 B. between 4 and 5 C. between 1 and 2 D. between 2 a

    asked by Shalee ^~^
  58. Maths

    Find the polynomial,P(x) such that x^3+x^2-13x+3 is identical to (x-3) P(x) Thankyou

    asked by Anonymous
  59. Math

    Your friend is 1.2 times taller than you. Your friend is 64.5 inches tall. How tall are you?

    asked by Paul
  60. Math

    (3-4sin^2A)(1-3tan^2A) =(3-tan^2A)(4cos^A-3)

    asked by Shreya
  61. science

    Ethical conflict over cases of cross-border and multigenerational pollution is an example of a dispute relating to

    asked by Anonymous
  62. chemistry

    What is the change in internal energy (in J) of a system that absorbs 0.246 kJ of heat from its surroundings and has 0.771 kcal of work done on it? Is this correct? 0.246, kJ x (1000 J/1 kJ) = 246 J 0.771 kcal x (4184 J/1 kcal) =3225.86 j 246 J + 3225.86 J

    asked by patrick
  63. Calculus

    Differentiate to find critical numbers and leave function in fully factored form. g(x) = (x^2+1)^5(x^2+2)^6 g'(x) = (x^2+1)^5[6(x^2+2)^5(2x)] + (x^2+2)^6[5(x^2+1)^4(2x)] g'(x) = 2x(x^2+1)^4(x^2+2)^5[6(x^2+2)(2x) + 5(x^2+1)(2x)] g'(x) =

    asked by Justin
  64. Maths

    Find the coefficient of x^2 in the following expansion. (you do not need to expand the brackets in full) (x-4)(x^3+x^2-2x-1) Thank you

    asked by Anonymous
  65. School Sports teams

    So I have to write something on the advantages and disadvantages of middle school sports team. So i know public school is free- but are the teams?

    asked by Cami
  66. Math

    Whats 9 + 10. My younger sister (whos obsessed with texting) asked me whats 9 + 10. I say 19, and she laughs. shes been held back multiple times, so I seriously don't know if shes joking about that 21 meme, or really simply stupid

    asked by Memes Master
  67. science

    how do endotherms stay warm. plz help me

    asked by k.c (hidding real name here)
  68. Math🤓

    A farmer wants to make a fence that is 32 ft. By 40 ft. If he wants to put up a fence post every 4 feet how many posts will he need? I got 18 because 40 divided by 4 is 10 and 32 divided by 4 is 8 then I added 10 and 8 and got the answer of 18

    asked by Leena
  69. science

    what are two consequences of spraying insecticides to get read of mosquitoes

    asked by manuel
  70. Physics

    A permanent magnet creates a homogenous magnetic field B~ inside a rectangular region. The magnet is moving with a velocity ~v ⊥ B~ . A particle at rest with mass m and charge Q is on the path of the magnet. Assume that the magnet has a mass much larger

    asked by Ryan
  71. Physics

    If there was a way to accelerate a spaceship close to the speed of light to go visit some neighboring star system, one would still face the problem that every particle the spaceship finds on its way will be a projectile hitting it with almost the speed of

    asked by Ryan
  72. Physics

    Remember the Poynting vector? The magnitude of this vector gives the amount of energy per second that flows through a unit area (in the direction it gives) because of the presence of a combination of electric and magnetic field, like in an electro-magnetic

    asked by Ryan
  73. Math

    Last questions, thanks for everything There are 21 plates of tomato sandwiches, 27 plates of cheese sandwiches, and 12 plates of beef sandwiches on a buffet table. If a guest randomly picks a single plate, what is the probability that he gets tomato or

    asked by Hailey
  74. math

    Can someone please check my math questions? My answers are under the questions... I would really appreciate any help Questions~ 16. A car’s speed before a sudden stop can be estimated by the formula S = √(30gk) , where S = speed of the car in mph, g =

    asked by Abby
  75. Algebra 2

    Create multiple representation of each line described below A line with slope 4 any y intercept -6

    asked by Tam
  76. Algebra 2

    Solve the following algebraically X+2y=17 X-y=2 can you pls leave the steps of how to complete this problem

    asked by Tam
  77. Reading

    Jake And Janet Were Together, and they had a fantastic day together. Choose the best way to rewrite it so it does not repeat ideas. A. Jake and Janet were together and they had a fantastic day together. B. Jake and Janet had a fantastic day in each other's

    asked by John Doswell
  78. Chemistry

    We did a titration lab, and one of the post-lab questions says: "the manufacturer of the vinegar used in this experiment claims that the vinegar contains 5% acetic acid by weight. Use your results and a density of 1g/mL to determine if this claim is true

    asked by Alexandra
  79. reading

    What is the prefix suffix and root for previous? Am i correct? No prefix No suffix Root- previous Answer ASAP PLZ

    asked by 🐶
  80. maths

    after 12 years ajay will be three times as old as he was 4 years ago. find his present age

    asked by shehzad
  81. maths

    ram has rs 80 in currency notes on rs 10 and rs 5. if the number of rs 5 currency notes in one more than the number of rs 10 notes how many of each does he have?

    asked by shehzad
  82. History

    7. all of the following were reasons behind the creation of the georgia colony except charity *** defense religion economic 8. which statement does not correctly describe james oglethorpe? he worked to reform prisions in england. he opposed laws that

    asked by HELP PLZZZ
  83. reading

    1 what is the suffix for deafening? Is it ing? 2. What does lurch mean? Answer ASAP PLZ

    asked by maya
  84. MATH

    pAYTON'S WEIGHT IS 60 LBS. sHE IS 5 TIMES AS HEAVY AS HER YOUNGEST BROTHER SETH. wHAT IS SETH'S WEIGHT?

    asked by DONNA
  85. CHEMISTRY!

    Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation for this is S2 (g) + C (s) CS2 (g) Kc = 9.40 at 900 K How many grams of CS2 (g) can be prepared by heating 11.7 moles of S2 (g) with excess carbon in a 5.95 L reaction

    asked by cal
  86. maths

    in a group of children one fifth play cricket two fifth play football and one fifth play tennis.and 30 play remaining games . find the total number of children.

    asked by shehzad
  87. Maths

    A polynomial g(x) is given by: g(x) = (x-1)(x+2)(x-a)(x-b) 1) given that a and b are integers, give the possible values for a and b. Thank you

    asked by Anonymous
  88. Math

    one positive number is 14 less than another positive number. if the reciprocal of the smaller number is added to five times to the reciprocal of the larger number the sum is 1/4. what are the two numbers

    asked by Riah
  89. ASAP need help

    8. which statement does not correctly describe james oglethorpe? he worked to reform prisions in england. he opposed laws that placed debtors in prision. he favored strict legislation dealing with the jobless. *** he was a member of parliament's house of

    asked by Are these correct?
  90. math (check last answers) plz

    Last questions, thanks for everything There are 21 plates of tomato sandwiches, 27 plates of cheese sandwiches, and 12 plates of beef sandwiches on a buffet table. If a guest randomly picks a single plate, what is the probability that he gets tomato or

    asked by Hailey
  91. Culture and society

    what is the structure of american society during pre/post emancipation period

    asked by Sasha Fierce
  92. General Chemistry

    A 0.179 g sample of a vitamin C tablet was titrated with 0.1000 M NaOH according to the procedure in this experiment. The titration required 7.08 mL of NaOH solution. How many moles of NaOH were used in the titration?

    asked by Alex
  93. Algebra

    Explain how you can determine from the graph of a system of two linear equation in two variables whether is an inconsistent system of equation. 2. When you solve a system of equation by the substitution method how do you determine whether the system of

    asked by Angelina
  94. math probability question

    If a player rolls 2 dice and gets a sum of 3 or 11 he collects $15. if he gets a sum of 12 he gets $3. the cost to play the game is $2. let x be the net money gained by the player. a. construct the prob distribution of the random variable x b. find the

    asked by lily
  95. Social studies

    What simiralities does the Aztecs and the Maya's

    asked by Anonymous
  96. math

    How much work is done when a 25 N block of wood is lifted 2.2 meters?

    asked by alex
  97. MATH

    find the like terms in the expression y+ 1.2y + 1.2z. A y and 1.2y B 1.2y and 1.2z C y and 1.2z D y,1.2y, and 1.2z Simplify 2 + 17x - 5x + 9 A 19x + 4 B 12x + 11 C 22x + 11 D 15x - 4 simplify 3(5y+6)-4 A 11y + 14 B 11y + 18 C 15y + 14 D 15y + 2 Factor 81 -

    asked by AABBCC
  98. biology

    why is anaphase the shortest stage in the cell cycle?

    asked by alyssa
  99. Maths

    A polynomial g(x) is given by: g(x) = (x-1)(x+2)(x-a)(x-b) 1) Given that g(0)=4 show that ab=-2 2) given also that g(3)=40 show that a+b=1 3) given that a and b are integers, give possible values for a and b. Thank you

    asked by Anonymous
  100. precalc

    prove the identity: cos^4 - sin^4 = cos^2 - sin^2 (cos^2 + sin^2)(cos^2 - sin^2) cos^2 + sin^2 = 1 cos^2 - sin^2 = cos^2 - sin^2 is this correct?

    asked by dipper
  101. Chemistry

    Using the van der Waals equation, calculate the pressure (in atmospheres) exerted by 91.14 g of Cl2 at 91.11 °C in a 1.00 L container. The van der Waals constants for Cl2 are a = 6.490 L2*atm/mol2 and b = 0.05620 L/mol.

    asked by Help123
  102. zwelinjani,economic

    What are welfare payment or consumer subsidies

    asked by nontokozokhomo
  103. MATH

    Identify the relation that is also a function. A. {(4, 2) (4, -3) (9, 3) (9, -3)} B. {(1, 0) (2, 3) (3, -1) (1, 5)} C. {(0, -1) (1, -2) (2, -3) (-1, 2)} D. {(5, 4) (5, 1) (5, 3) (0, 5)} D???

    asked by Shalee ^~^
  104. PHYSICS

    At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.78 m/s, and an 63.5-kg

    asked by Anonymous
  105. math

    find the like terms in the expression y+ 1.2y + 1.2z. A y and 1.2y B 1.2y and 1.2z C y and 1.2z D y,1.2y, and 1.2z that's all I need im not sure I think its c

    asked by Deez Got Hee
  106. Walnut hill elementary

    A football team had 4 plays. The first play they gained 6 yards, the second play they lost 3 yards, the third play they lost 2 more yards and the last play they gained 1 more yard. If they started at he zero yard line where are they now?

    asked by Tess
  107. Statistics

    n=13 p=0.75 p (more than 11)

    asked by Jen
  108. Physics

    A 75 kg man sits at one end of a uniform seesaw pivoted at its center, and his 24 kg son at the other end. Where would his 55kg wife have to sit to balance the seesaw?

    asked by Maya
  109. math

    Min wants to create a figure using half as many tiles as an original figure that uses 25 tiles (15 gray and 10 white.) How many gray tiles will she use? I figured half of 25 is 12 and a half and half of 15 is 7 and a half. So I think she would use 7 and a

    asked by Jeremy
  110. English

    I'm just looking for some ideas for an essay on a Tale of Two Cities.... it can be anything related to the book... and I'm not asking you to do my schoolwork for me... I can develop the thesis and points but I just need some ideas... this is for a 4u

    asked by Sarah
  111. Adding and Subtracting Rational Numbers

    -1/2+1/3 -3 1/5+-6 1/2 5/8-(-2/8) -9/10-2/5 6 3/5-(-2 1/5)

    asked by Dee Snuts
  112. William James middle

    A 5 pound bag of peanuts is on sale for $9.30.itcis going to be divided into 3/4 pound bags.how much will it cost to fill one smaller bag?how many bags of peanuts will be remaining?

    asked by keisha
  113. Social Studies

    In a fully developed paragraph, evaluate the rule of the trustees as a success or failure. Explain your reasoning. Can anyone help?

    asked by Amber
  114. Career

    How Much does a Ferrari rent cost per month? I need to know this for a career project, which car i want and i want a Ferrari, i tried searching it but I can't find it!:( Plz help asap:)

    asked by Labbayk
  115. Area of a triangle i need help urgently

    in triangle ABC b=6 c=8 and angle A=60degree find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K?? Show that AD=24root3/7...

    asked by Collins
  116. Math

    A lock has 3 tumblers each has 10 numbers from one through zero, how many possibilities to open lock and what are the numbers ?

    asked by John
  117. Math

    True of false A broken scale can make changes in data appear less they than they actually are. If false, explain why. I know the answer is false because it is in my book, but I don't understand why.

    asked by Katie
  118. Infinity series i need help also

    To what value does the sum of 20+12+36/5+.............tends to infinity??

    asked by Collins
  119. PHYSICS

    Car A uses tires for which the coefficient of static friction is 0.399 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 10.4 m/s. Car B uses tires for which the coefficient of static friction is 0.831 on the

    asked by Anonymous
  120. MATH

    Use the converse of the Pythagorean theorem to determine which of the following are side lengths of a right triangle. A. 2.1, 2.8, and 3.5 units B. 2.3, 2.8, and 3.6 units C. 2.2, 2.9, and 3.6 units D. 2.2, 2.7, and 3.5 units C?

    asked by Shalee ^~^
  121. maths

    6 11/12 ÷ 9 1/5 * 12/8

    asked by atish patel
  122. Algebra

    1.Is the line contains the points P1(-1,2)and P2(3,4) perpendicular to the line that contains the points Q1(-1,3)and Q2(-4,1)? 2.a line given two points P1(4,5),P2(-4,3)

    asked by Angelina
  123. physics

    Suppose that a net force F gives an object with a mass of m an acceleration of 9.65 m/s/s. Suppose that the net force were increased by a factor of 4.7, and the mass were increased by a factor of 3.0. What would be the new acceleration (in m/s/s)? Please

    asked by Janice
  124. Science

    Suppose you found a fossil of a clam shell what can you conclude about the once-living organism and how it became a fossil?

    asked by HelpMePlease
  125. maths

    every 2cm2 of cardbord has a mass of 1g.what is the mass of the cardbord to make the box.th e box is 16cm long 22 cm high and 4 wide

    asked by lilly
  126. science

    The concentration of sodium chloride in ocean water is on average 0.060 M. What mass of sodium chloride is present in 25 L of ocean water? How do I answer this question, I have no idea where even to start.

    asked by alyssa
  127. language arts

    Which of the following sentences has the correct verb? a) yesterday Denise hikes to the top of the mountain. b)yesterday Denise hiked to the top of the mountain. c)yesterday Denise has been hiking to the top of the mountain. d) yesterday Denise will hike

    asked by Ana
  128. Physics

    A block of mass m = 5.0 kg is pulled along a rough horizontal surface by a rope as sketched in the figure below. ( rope is at a 30 degree angle from the horizontal) The tension in the rope is 50 N, and the coefficient of kinetic friction between the block

    asked by Wrenn
  129. math 51

    f(X)=(x-1)^2*(x-2)^3

    asked by loucille
  130. jefferson ore

    Using digits 1-9to build following numbers largest even number,largest number with 8 in millions place, smallest number .don't understand how to do this

    asked by tina
  131. Statistics

    Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the sample is less than

    asked by Obi
  132. Math

    How would I simplify it? 1/3 (3^2 x 3^-3)

    asked by Ally
  133. Physics

    A golf ball strikes a hard, smooth floor at an angle of 20.7 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0528 kg, and its speed is 40.2 m/s just before and after striking the floor. What is the magnitude of the

    asked by John
  134. Math

    1. find the two consecutive number such that five-eights of the smaller number equals three-fifths of the larger number. 2. separate 221 into two parts such that their quotient is 8/9. thanks...

    asked by Chen
  135. Math

    1. if the largest of three consecutive even integers is multiplied by 5, the product is 6 less than three times the sum of the first two integer. fin the integers.

    asked by Chen
  136. Algebra

    A triangle has an area of 65ft. Its height is 3 ft more than its base. Find the measure of the base

    asked by Danielle
  137. Math

    What is the sum of all the integers between - (negative) square root of 9 and square root of 15 (Not negative 9s square root)

    asked by Emma
  138. chem

    A hot air balloon with a volume of 3.20 x 103 L and 120 moles of air is at a temperature of 25 °C. The air is heated to 65°C and 250 moles of air is added. What will the new volume of the balloon be?

    asked by anonymous
  139. Physics

    A uniform 4m plank with a mass of 45 kg is supported at its ends by two ladders. Two 75 kg men are standing on the plank. One is 1 m from one end and the other is 1.5 m from the other end. Determine the forces exerted by the ladders.

    asked by Maya
  140. Physics

    a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular

    asked by parna deljo
  141. Math

    I need help with completing the table of values with x+2y=4 using x values as followed: 0,blank,7,blank and then y values as: blank,0,blank and 3. please help.

    asked by Modessa
  142. Physics

    On a banked race track, the smallest circular path on which cars can move has a radius of 114 m, while the largest has a radius of 170 m, as the drawing illustrates. The height of the outer wall is 17.5 m. Find (a) the smallest and (b) the largest speed at

    asked by Anonymous
  143. Physics

    a student performing the centripetal force experiment added some mass to the 25.0g acceleration block. when he did the experiment, he found that the speed at which the accelerated block separate from the magnet was 102 m/s^2. The radius of the circular

    asked by Layla Smith
  144. 3rd grade math

    How to expand algorithm to solve 221+164=

    asked by amy
  145. Math

    Two sides of a rectangular fence are 5 and 5/8 feet long and the other two sides are 6 and 1/4 feet long what is the perimeter,?

    asked by Hazel
  146. math

    4. When a cake is removed from a pot, its temperature is measured at 3000C. Three minutes later its temperature is 200o C. How long will it take for the cake to cool off to a room temperature of 70oC?

    asked by viera
  147. civics

    9. The purpose of the Constitution is presented in the A. Preamble. B. Articles. C. Amendments. D. Bill of Rights.

    asked by Anonymous
  148. History

    How do maquiladoras help or hurt the economy

    asked by Anonymous
  149. Probability

    The probability that a washing machine will operate satisfactorily for 3 years is 0.82 while the probability that a floor polisher will operate satisfactorily over the same period of time is 0.78. Find the probability that in a 3-year period, only the

    asked by Jen
  150. Moorpark

    A solution contains an unknown mass of dissolved barium ion. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 210 mg. What mass of barium was in the original

    asked by Nicole
  151. Calculus

    Someone had helped me yesterday, but I need it broken down more because I honestly don't understand any of this? A plane flying horizontally at an altitude of 2 mi and a speed of 420 mi/h passes directly over a radar station. Find the rate at which the

    asked by Callie
  152. PreCalculas

    A ball is thrown upward with an initial velocity of 4 ft/sec from a height of 10 feet. What is the maximum height that the ball will reach? h(t)=-16t^2+v0t+s0 Please help im lost

    asked by Ryan
  153. Algebra

    The formula h=300t- 5t^2 gives the height, h in meters, of a rocket the seconds after take off. The maximum height reached by the rocket is 4500m. How long will it take the rocket to reach this maximum height?

    asked by Trish
  154. Chemistry

    A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 mL of a solution that has a concentration of Na+ ions of 0.600 M ?

    asked by Lo
  155. Q&A

    8. which statement does not correctly describe james oglethorpe? he worked to reform prisions in england. he opposed laws that placed debtors in prision. he favored strict legislation dealing with the jobless. *** he was a member of parliament's house of

    asked by Heyy Ms.Sue
  156. Math

    solve by substitution x+y=5 x+y=3

    asked by Chen
  157. physics

    Suppose the stone is thrown at an angle of 30.0 degrees below the horizontal. If it strikes the ground 57.0 m away, find (a) the time of flight, (b) the initial speed, and (c) the speed and the angle of the velocity vector with respect to the horizontal

    asked by Adam
  158. business math

    If you make two equal deposits now and 5 years from now into an account that pays interest at a rate of 4% compounded annually. IF the goal; is to have $12,000 in the account 12 years from now, what should each of the deposits be? .

    asked by Miku
  159. Maths;function i need help

    (1):Given the cost function c(x)=10+2x and the revenue functio r(x)=3x,find break even quantity and the price (2):if the marginal cost of producing x unit is given by c'(x)=0.4x^3+2x and the fixed cost is p4000.00 find the cost function c(x) and cost

    asked by Collins
  160. Algebra

    -4(a+3)-a

    asked by James
  161. Math

    x + 7 = 32 x = 25 Am I right??

    asked by Labbayk
  162. Physics

    Two particles of mass 5 g and 10 g respectively are joined by a light string which passes through a small hole on a smooth table. The smaller particle describes a circle of radius R on the table at a rate of 4 revolutions per second while the heavier

    asked by an
  163. physics

    6. Calculate the gravitational force between you (weight: 140 lb) and your classmate (125 lb) sitting 20 inches apart on a bench. Answer must be in standard metric units. I don't want the answer can you just explain how to put it together and how do I add

    asked by Anonymous
  164. Rounding

    Rounding 10497 to neatest thousand

    asked by Milli
  165. glgmnhs

    An arc of a cirle measure 30°.if the radius is 5cm,what is the length of the arc? Give the solution.

    asked by rhachelle cortez
  166. Math

    While working at a yard sale, Ying helps a customer who buys items that cost $5, $2,$2.50, and $0.25. The customer hand Ying $3 and says to keep the $0.18 change. How much did the cusomer think the total was? What mistake did the customer make? Explain.

    asked by Grace (The Puzzled Penguin)
  167. glgmnhs

    The opposite angles of a quadrilateral inscrib in a circle

    asked by rhachelle cortez
  168. PHYSICS

    On a banked race track, the smallest circular path on which cars can move has a radius of 114 m, while the largest has a radius of 170 m, as the drawing illustrates. The height of the outer wall is 17.5 m. Find (a) the smallest and (b) the largest speed at

    asked by Anonymous
  169. science

    what acceleraton would m2 in mass24 m/s2acceleratoin of an and m1 a force of 5n produces an acceleeration of 8m/s2 in mass

    asked by sangita joshi
  170. KCC

    An electron has a speed of 500 m/Sec with uncertainty of 0.002% what is the uncertainty in position?

    asked by Rahul
  171. chemistry

    What is the mass of mercury that can be prepared from 2.00 g of cobalt metal? Co(s)+HgCl2(aq)→CoCl3(aq)+Hg(l)

    asked by Benita
  172. calculus

    find the first and second derivatives for 3x^4-4xy^2+7=2y

    asked by jack
  173. Math

    If Phong takes 20 minutes to paint a fence that is 3 feet tall and 10 feet long, what is Phong's rate in square feet per minute?

    asked by Anonymous
  174. Math

    David and Mike are brothers. David is 33 years old today. This is three times as old as Mike was when David was the age that Mike is today. How old is Mike?

    asked by KC
  175. chemistry

    Name a metal which is found in liquid state at ordinary temperature?

    asked by sujal
  176. us history

    What did the founders mean when the wrote ¨to form a more perfect union?¨ A) a military would be formed to protect against foreign threats. b) a court system would be formed to resolved disputes between citizens. c) a process will be created to solve

    asked by Ana
  177. Physics

    A man exerts an effort of 250 Newtons through a distance of 4 meters to lift a load of 1000 Newtons through a height of 0.75 meters. Calculate the velocity ratio. I'm thinking i divide the 4 meters(displacement of effort)/0.75 meters (displacement of load)

    asked by Cortney
  178. Math

    Complex Numbers please helpppppp and show solutions 1.) (3-7i) + (-1-2i) 2.) (4-5i) - (2-3i) 3.) (7-5i) + (6+9i) 4.) 2+3i/3-5i

    asked by Denzel
  179. Chemistry

    We did a titration lab, and one of the post-lab questions says: "the manufacturer of the vinegar used in this experiment claims that the vinegar contains 5% acetic acid by weight. Use your results and a density of 1g/mL to determine if this claim is true

    asked by Alex
  180. college algeb

    Inequalities 1.) 3(t+1)>2t 2.) 2p+1/5 > -3 3.) x^2-3x-10 >= 10

    asked by Denzel
  181. chemistry

    How are ions formed?

    asked by sujal
  182. college algeb

    1.) 3(t+1)>2t 2.) 2p+1/5 > -3 3.) x^2-3x-10 >= 10 please help and show solution

    asked by Denzel
  183. Maths

    If Betty can job 1500 meters in 10 minutes, how long will it take her to jog 10 Kilometres? PLEASE HELP MEEEEEEE!!!

    asked by Tori
  184. chemistry

    Copper plate can be used as cathode but it cannot be used as anode in electrolysis of water,why?

    asked by sujal
  185. MATH

    find the area of the triangle whose base is: 2a+2b _______ a-b and the height is: a-b _______ a^2 + 3ab + 2b^2 Thank you!!

    asked by Camz
  186. chemistry

    Name a lustrous non metal?

    asked by sujal
  187. MATH

    Simplify: 1 1 _____ _ ____ 5 + h 5 _________________ h Thank you :)))

    asked by Camz
  188. MATH

    There are (64x^2 - y^2)red marbles and (64x^2 - 16xy + y^2) green marbles in a box what is the ratio of the number of red marbles to the number of green marbles ? Thank you :))

    asked by Camz
  189. chemistry

    Write the differences between atom and molecules?

    asked by sujal
  190. chemistry

    Which ions are formed during electrolysis of water?

    asked by sujal
  191. Cranborne

    In the diagram AOBP is the major sector of a circle centre O.BO=8cm, AOB=156° and the sector is bent to form a right cone. a)Caculate the radius of the cone b)Calculate the vertical angle of the cone

    asked by Kudakwashe
  192. Bule hora preparatory school

    An ideal gas is sealed within a container at a tempreture of 17 degree celcies and a pressure of 101KPa. The container is heated until the tempreture of the gas reaches 100 degree celcies. A valve in the container is then opened to allow gas to escape

    asked by Bilisuma hussein
  193. math

    Your taxi charges $3.00 for the first one-fourth of a mile and $0.50 for each additional one quarter of a mile. How much will the charge be if you have driven for 1.75 miles?

    asked by Pam
  194. physics

    Sound wave with greater amplitude travels farther than that with smaller amplitude?

    asked by sujal
  195. physics

    Why is voltmeter connected in parallel in electric circuit?

    asked by sujal
  196. chemistry

    Acid is required for calcium carbonate to fully dissociate. Determine the volume of 6M hydrochloric acid that must be added to dissolve the mass of CaCO3 you calculated in the question above taking into consideration the equations below. CaCO3->Ca+CO2

    asked by Jennifer
  197. physics

    Why is voltmeter made of high resistance?

    asked by sujal
  198. Math

    If the lengths of the legs in a right triangle are 7 and 8, what is the approxir? 1.4 3.5 5.4 10.6 I think it is 5.4

    asked by Lost
  199. AP Physics 1

    In the javelin throw at a track-and-field event, the javelin is launched at a speed of 33 m/s at an angle of 32° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How

    asked by Anonymous
  200. physics

    What is voltage and electromotive force?

    asked by sujal
  201. physics

    What are differences between nuclear fusion and nuclear fission?

    asked by sujal
  202. math

    stamps are sold in booklets of 100, 50, 10 find as many different ways to buy 200 stamps as you can record your work I the chart

    asked by yamini
  203. Math

    If it take Ping 20 minutes to paint a fence that is 3 feet tall and 10 feet long,how long will it take her to paint a fence that is 6 feet tall and 20 feet long, assuming she continues at the same rate?

    asked by Anonymous
  204. science

    A cubic container full of hot water at a temperature of 90 °C is completely lagged with an insulating material of thermal conductivity 6.4x10-4 Wcm-1K-1 (6.4x10-2 Wm-1K-1). The edges of the container are 1.0 m long and the thickness of the lagging is 1.0

    asked by Pam
  205. physics

    The force of gravity on a box is 597 N on the surface of the Earth. Find the mass of the box.

    asked by Nicholis