# Questions Asked onDecember 18, 2014

1. ## Algebra 1

Which method would be the simplest way to solve the system? 7x +5y = 19 -7x-2y = -16 graphing substitution elimination or distributive

asked by Steve
2. ## Algebra

Points A(3,5) and B(7,10) are the endpoints of a diameter of a circle graphed in a coordinate plane. How many square units are in the area of the circle? Express your answer in terms of pi.

asked by Jill
3. ## Algebra

If ab = 37 and xy = 1/37, what is the value of the product x • b • y • a? Use the commutative and associative properties of multiplication to evaluate.

asked by Charlina
4. ## Calculus

Determine the intersection, if any, of the planes with equations x + y - z + 12 = 0 and 2x + 4y - 3z + 8 = 0. I have no clue where to even begin. If someone could help and give me the steps to complete it, that would be greatly appreciated. Do I have to

asked by Ad
5. ## Calculus

Determine the intersection, if any, of the planes with equations x + y - z + 12 = 0 and 2x + 4y - 3z + 8 = 0. I have no clue where to even begin. If someone could help and give me the steps to complete it, that would be greatly appreciated. Do I have to

asked by Ad
6. ## Chemistry

Carbon monoxide and molecular oxygen react to form carbon dioxide. A 49.0 L reactor at 200°C is charged with 1.14 atm of CO. The gas is then pressurized with O2 to give a total pressure of 3.54 atm. The reactor is sealed, heated to 350°C to drive the

asked by Derek F.
7. ## Math

in the woods is a cellular tower that is 72 feet tall and has a 60 foot shadow. next to it is a tree with a 40 foot shadow. how tall is the tree

asked by Clare
8. ## business math

toby signed a simple discount promissory note for \$20,000. the discount rate is 8.5%, and the term of the note is 90 days. what are toby's proceeds on the loan?

asked by Anonymous
9. ## math

On April 12, Michelle Lizaro borrowed \$5,000 from her credit union at 9% for 80 days. The credit union uses the ordinary interest method. a. What is the amount of interest on the loan? \$ b. What is the maturity value of the loan? \$ c. What is the maturity

asked by reva
10. ## GEOMETRY

The sum of the measures of two exterior angles of a triangle is 264o. What is the measure of the third exterior angle? • 84o • 96o MY ANSWER?? • 112o • 124o

asked by SANDRA
11. ## Math

What is a real world problem that compares the ratios 5 to 9 and 12 to 15.

asked by Anonymous
12. ## PRE-ALGEBRA

1. 5h – 9 = –16 + 6h (1 point) 4 –7 7 10 2. 4x + 4 = 9x – 36 (1 point) –8 –7 8 –3 3. Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1)

asked by I NEED HELP PLEASE!!!!!!!!!!!!
13. ## math

I'm trying to help my son with his homework and I have been out of school for some time...the question is: The floor of the recreation room at the YMCA is triangular with a base of 20 meters and a height of 13 meters. The YMCA wants to install carpeting

asked by eole
14. ## Math help

A boy has 380 prize tickets he wants to exchange for action figures at a prize booth. At this prize booth 5 tickets can be exchanged for a large action figure, and 7 tickets can be exchanged for 2 small action figures. The boy wants 4 times as many small

asked by Anonymous
15. ## math

A girl walks 12 km at the speed of 3 km/h. what change should she make in her speed to take (i) an hour less and (ii) an hour more to cover the distance?

asked by mukesh
16. ## math

A company will need 55,000 for a new addition. To meet this goal the company deposits money in an account today that pays 5% interest annual compound quarterly. to meet this goal in five years what would the company need to deposit today?

asked by Michelle
17. ## math

A scientist is mixing a chemical solution for an experiment. The solution contains 3/8oz of chemical and 1/6 ounce saline solution. What is the rate of chemical to saline?

asked by Eli
18. ## Science

Check my answers please? Imagine that you remove all the atoms from a chair. What remains? 1. nothing 2. a pile of dust I choose 1. Which of the following is not made of atoms? 1. heat 2. a solid 3. a gas I choose 1. What about matter is true? 1. atoms are

asked by Mayflower
19. ## math algebra

What is y intercept of equation represented: X Y 150 1047 125 872 100 697 75 522 a. -3 b. 0 c. 3 d. 172 I come up with totally different answers than these. Do you use the y2-y1/×2-×1 ?

asked by taylor
20. ## math

A punch recipe calls for 2/3 of pint juice to one pint soda, What is ratio of soda to juice?

asked by elyshia
21. ## Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x divided by x+1 multiplied by x^2-1 divided by x^2+x-6 is the expression

asked by Alex
22. ## math

A taco stand sells tacos for \$3.25 each. The stand’s expenses for the day are \$210. Define your variables and write an inequality to represent the amount of tacos they need to sell per day to make a profit, and then solve the inequality. Provide your

asked by Anonymous
23. ## L.A help please

Read the following passage from the novel. A sergeant yelled at Johnny as he started to limp past them, but when he explained in a piteous whine that his foot had been squashed by a blow from a soldier's musket and all he wanted was to get home to his

asked by Princess Princess
24. ## Chemistry

You have a tank of helium with a volume of 10 liters that is currently under 40 atm of pressure. If you open the valve on the tank and release the helium into a room with a volume of 10,000 liters, how many atmospheres of pressure will the helium now be

asked by Ryan
25. ## math

If ten crates arrive at the receiving dock, and each crate contains 7 boxes of decorative vases with 12 vases per box; how many vases are in each crate?*

asked by kevin
26. ## math

1.During the soccer season, Michelle attempted 130 goals and made about 70% of them. a. How many goals did Michelle make? b. The team made a total of 456 goals. What percent of the teams made goals did Michelle make? 1. 13 goals; 2.85% 2. 39 goals; 85.5%

asked by :)
27. ## P.E

1. One of your friends plays video games for at least six hours each day and gets upset when he has to eat dinner with his family. This is a sign of? a. An anxiety disorder. b. A phobia c. Bipolar disorder d. An impulse-control disorder 2. A phobia is an

asked by 65789
28. ## Science

What allows small particles to move through cell membranes? Is it diffusion?

asked by Humanoid
29. ## L.A.

Writeacher, I need some help on another question. It goes like this. Which of the following passages from the novel is evidence of Johnny's heroic actions? A. He had been assigned his own particular duty, this was to keep sharp track of Colonel Smith and

asked by Dave Mang-Chang
30. ## physic

Eight people are involved in a tug-of-war. The blue team members pull the rope with the forces of 220 N, 340 N, 180 N, and 560 N. Three members of the red team pull it with the forces of 250 N, 160 N, and 420 N. With what force must the fourth person pull

asked by wellington
31. ## optional maths

(1+sec 2A) (1+sec4A) (1+sec8A) = tan8AcotA

asked by Anonymous
32. ## Algebra 1

In which quadrant does the solution ofthen system fall? y=x-1 y= -3x-5

asked by Steve
33. ## Physics

800 n student is standing in middle of frozen pond stranded 6.4 m from shore only thing he has is physics book which has mass of 3 kg so he throws it at 10 m/s toward one shore how long does it take him to reach opposite shore

asked by Anonymous
34. ## algebra

You Found The perfect Chritmas present for your cousin . Macy's in kentucky has the item priced for \$35 . you have a coupon for 20% off and must pay 6% sales Tax . how much will the present cost you?

asked by Londenn
35. ## Physics

65 kg pole vaulter running at 10.2 m/s vaults over the bar. if height of bar was set at 4.96 m how fast was he moving as he cleared the bar

asked by Anonymous
36. ## Technology - grade 9

Can someone tell me a brief summary on how to make an L.E.D light up when connected with only wires, nutes and bolts, battery and a paperclip.

asked by thi
37. ## Physics

starting from rest a 7.5 kg suitcase slides down a 30 degree frictionless incline a distance of 3.1 m upon reaching the bottom it slides an additional 5 m before coming to a stop. a) determine speed of suitcase at bottom of ramp b) determine coefficient of

asked by Anonymous
38. ## physic

8. A torque wrench reads 25 lb ft. a. If its length is 1.0 ft, what force is being applied to the wrench? b. What is the force if the length is doubled?

asked by wellington
39. ## Science

Can an egg or sperm be formed through mitosis?

asked by Anon
40. ## math algebra

What is slope of line 8y = -16? a. 0 b. 2 c. 16 d. undefined dont have a clue how to do this

asked by taylor
41. ## Science

How are respiration and fermentation similar? How are they different?

asked by Humanoid
42. ## Math

The denominator of a fraction is one more then the numerator. If 2 were added to both the numerator and denominator, the new fraction equals 4/5. Find the original fraction.

asked by Charles
43. ## math algebra

The length of the diagonal across the front of a rectangular box is 25 inches, and the length of the diagonal across the side of the box is 20 inches. The length of a 3 dimensional diagonal of the box is 28 inches. What is length of the diagonal across the

asked by taylor
44. ## chemistry

The reaction for the complete combustion of acetylene is shown below. C2H2(g) + 5/2 O2(g) -----------> 2 CO2(g) + H2O(l) Î”H = -1299 kJ Use this reaction and the data below to calculate the heat of formation for acetylene. Î”Hf[H2O(l)] = -285.8

asked by Eman
45. ## math algebra

Mauryn wrote the following Sandwiches at king sandwich cost same amount and include bread, meat, cheese, lettuce, and tomato. All other veggies are extra. Sam bought a chicken sandwich with 3 extra veggies for \$5.25. Erin bought roast beef sandwich with 5

asked by taylor
46. ## science

A circular disk is rotating in a horizontal plane with a time period 3.14 second.At what distance from the center a coin of mass 10 gram may be kept so that the coin coin may remains stationary the coefficient of friction is 0.52?

asked by Arave karn
47. ## Medical Administrative Assistant

I need help adding some stuff to this exam please help Exam 028005 It has come to my attention after a conversation with a DMD Medical Supplies representative that some of our work for them has been subpar. Knowing we are a customer driven company I did

asked by Kara
48. ## STAT- important

What is the difference between normal distribution and approximate normally. Correct me if im wrong but I think the parameters of Normal is X~Normal (mu, standard deviation) but then approx. normal is X~Normal (mu, variation) im just really confused when

asked by Sarah
49. ## PRE-ALGEBRA MRS.SUE PLEASE!!!!!!!!!

1. 5h – 9 = –16 + 6h (1 point) 4 –7 7 10 2. 4x + 4 = 9x – 36 (1 point) –8 –7 8 –3 3. Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1)

asked by I NEED HELP PLEASE!!!!!!!!!!!!
50. ## stats

A jar contains 7 black balls and 25 red balls. You take 2 out without replacing them. Find a)the probability of drawing 2 red balls in a row, b) the probability of drawing a red ball, then a black ball, c) the probability that the two balls will be of

asked by Sally
51. ## Math

The cost of staying at a hotel can be found using the function y = 129x + 9.95, where x is the number of days a guest stays at the hotel and y is the cost in dollars. The cost includes a flat fee for Internet access. If the fee for Internet access is not

asked by Anonymous
52. ## Algebra

The half-life of a specific radioactive compound is 20 years. The equation used to model this half-life is y = 5 1/2(t/20) where t represents time. Currently, there are 5 pounds of this compound 15 feet below the earth's surface. When will there only be 4

asked by Zyere
53. ## algebra

Traveling downstream a certain boat went 21 mph. Traveling upstream it went only 5 mph. Find the speed of the boat in still water and the speed of the current.

asked by james
54. ## Algebra

Find all real roots of the following equation. x^2 - (5/3)x = -2/3 Thx

asked by Anonymous
55. ## physic

A 1250 kg wrecking ball is lifted to a height of 12.7 m above its resting point. When the wrecking ball is released, it swings toward an abandoned building and makes an indentation of 43.7 cm in the wall. a. What is the potential energy of the wrecking

asked by wellington
56. ## science

NaOH + HSO -+ Which of the following is the number of moles of NaOH required to neutralize 1 mole of H2SO4 in the equation above?

asked by Jasmine
57. ## science

Calculate the weight of gold having specific heat capacity 0.13 joule which is heated from 25 degree c to 300 degree c, where the heat absorbed is 1500 joule?

asked by mayank
58. ## math

what is the value of x given the perimeter is 76, the length is 3x -6 and the width is x.

asked by shealey
59. ## math

There are 27,878,400 square feet in one square mile. How many square feet are there in 35 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also

asked by Anonymous
60. ## math

Which ratio compares 15m to 45cm?

asked by Stephanie
61. ## math

So i have this project and i need help on it. It says ....As your 8th grade graduation approaches,your parents decide to begin planning for your graduation party.Your parents have asked for your help in deciding which companies will be the better deal for

asked by starie johnn
62. ## math

* not multiple choice* 2/3n = 8 solving the system of equations 4x + 3y = 13 y= -x +4 * not sure how to do this the slope intercept form of the function that contains the point (-3, 2) and has a slope of -2? my answer: y= -2x + 6 -1 + 5(6-y) my answer is

asked by Anonymous
63. ## physics

The movement of an object or a point mass at a constant speed around a circle that has a fixed radius is called uniform

asked by alex
64. ## math

So i have this project and i need help on it. It says ....As your 8th grade graduation approaches,your parents decide to begin planning for your graduation party.Your parents have asked for your help in deciding which companies will be the better deal for

asked by starie johnn
65. ## math

w=80rmp r=2ft what is v=ft/min

asked by Anonymous
66. ## Grade

If there are 70 questions and you get an 80 how many did you miss

asked by M
67. ## Algebra math

The height H and beat of a ball after T seconds is given by H equals 80t team take away 16x2. how long did it take for the bout to hit the ground

asked by Anonymous
68. ## staticsits

65 % college students believe that their online education. give the null hypotheis for testing the claim made by survey what is the null hypothesis

asked by jacqueline
69. ## math

Please solve the system with the elimination method. Explain each step as it is performed. 5y = x 2x - 3y = 7 Would the elimination method have been your first choice to solve this problem?

asked by cathy
70. ## Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1 divided by x^2+7x+12 divided by 2x-1 divided by x^2 +x- 12 is the expression Help me please and thank you.

asked by Alex
71. ## Math

During the soccer season, richard attempted 80 goals and made about 65% of them. a. How many goals did Richard make? b. The team made a total of 327 goals. What percent of the team's made goals did Richard make?

asked by Gabe
72. ## Algebra 1

When solving a system of equations, how do you determine which method to use?

asked by Steve
73. ## math

If my input is 24 and my output is 8 what is my rule

asked by Danija
74. ## math

If Susan takes two tests and makes a makes a 54/100 on the first test and a 63/100 on the second test, and is given a third test and makes an 80/100(which can only count as 20% of her total grade for all three test, what is her final grade/score.

asked by destiny scott
75. ## algebra

the sum of the least and greatest integer is 35 more than the middle integer

asked by math
76. ## Math

What is the equation of the line that has a slope of 0 and passes through the point (6, -8) A. x=6 B. y=6 C. x=-8 D. y=-8

asked by Anonymous
77. ## confused creative writing

In creative nonfiction, a quote is differentiated from fictional dialogue in that it: takes the liberty of re-creating someone's spoken or written words is closer to the truth than fiction dialogue can be edited to change the piece's emotional impact

asked by 2phoneeeeee
78. ## L.A help please

Which of the following passages from chapter X reveals the Climax of the novel? A. outside the closed window on Tremont Street a small group of soldiers were marching stealthily toward the Common. These were the first they heard. But soon another group

asked by Princess Princess
79. ## algebra

When 40 is added to the number of miles Karen ran last week, the result is the same as adding 10 to 4 times the number of miles she ran last week. How many miles did Karen run last week?

asked by Dionne
80. ## Chemistry

I need help with this question. 1. You have a tank of helium with a volume of 10 liters that is currently under 40 atm of pressure. If you open the valve on the tank and release the helium into a room with a volume of 10,000 liters, how many atmospheres of

asked by Anonymous
81. ## language arts

Which of the following passages from Johnny tremain is most useful in helping you determine what type of ruler general gage is? Select all that apply A. Sam Adams was so happy his hands shook worse then ever B. He was not brilliant but he was no tyrant C.

asked by katie
82. ## L.A

This isn't a question but if you have helped me in L.A today thank you. I just want to thank everyone for the help and everyone for helping each other! Happy holidays and have a wonderful Winter Break! :-)

asked by Anonymous
83. ## chemistry

If we have : H2(g) + 1/2 O2(g) -> H2O(l) dHf= -285.5 Kj N2O5(g) + H2O(l) -> 2HNO3 dHf = -76.6 Kj 1/2 N2 + 3/2 O2 + 1/2 H2 -> HNO3 dHf = - 174.1 Kj then , what is the dHf of 2N2 + 5O2 -> 2N2O5

asked by MAD
84. ## Math

She deposits \$5 or \$3.50 into her account. She made 14 deposits which equaled \$59.50. how many times did she deposit \$5 & how many times did she deposit \$3.50 - I don't know how to do this!

asked by Anonymous
85. ## Chemisty

calculate the concentration of the solution of 6.4g calcium sulafte is added to 0.125l of water

asked by EFonts
86. ## phy

A weightless string is suspend on a frictionless pulley, a mass of 6 kg. is suspend at one end and mass of 10 kg. is suspended on the other end of the string, the tension in the string will be :

asked by nimish
87. ## programming

Can someone teach me how to show whats on my computer screen to another computer's screen?

asked by Clayton
88. ## Chemistry

What is the HCl concentration if 65.8mL of 0.300M NaOH is required to titrate a 15.0mL sample of the acid?

asked by Ken
89. ## physics

If you use a horizontal force of 30.0 N to slide a 12.0 kg wooden crate across a floor at a constant velocity, calculate the acceleration.

asked by Anonymous
90. ## math

how do you rewrite the problem so the divisor is a whole number 48.4 (division sign)0.4 8.19 (division sign)0.09 3.7 (division sign) 2.1 2.39 (division sign) 0.05 45.218(division sign)0.23 233.58(division sign)10.2

asked by Isabella NEEDS HELP NOW( PLEASE)
91. ## Science

Which term describes a type of trait that is usually expressed only when an organism has two identical alleles for the trait? A- homozygous B- dominant C- heterozygous D- recessive My guess is A.

asked by Skye
92. ## english

Peter attends 6 dance lessons each week, all year long. There are 52 weeks in a year. Peter missed 5 dance lessons while sick. How many dance lessons did Peter attend during the year?

asked by Anonymous
93. ## algebra 1

solve -16x-2y=-18 and 8x+y=9 by elimination

asked by Lexi
94. ## math

oder these fractions and decimals from great to the 0.5,2/3,0.25,5/6,1/8

asked by boby
95. ## algebra 1

solve 5x-12y=-3 and 10x-4y=-25 by elimination

asked by Lexi
96. ## math

A watch is on sale for 15 percent off. Its discounted price is 76 dollars. What was its original price?

asked by Shohanur
97. ## Music

I have a listening chart assignmentand I have no cue how to start?

asked by Marivet
98. ## Chem

So I corrected my errors but am still confused. Should I convert torr to ATM or KPa to get R?

asked by Dan
99. ## science

Which of the following best describes the process of diffusion?

asked by Anonymous
100. ## Science Please Check!

Which term describes a type of trait that is usually expressed only when an organism has two identical alleles for the trait? A- homozygous B- dominant C- heterozygous D- recessive My guess is D. Please help!

asked by Skye
101. ## Ms. Sue

The answer was actually D- recessive.

asked by Skye
102. ## Honors Physics

A canoeist is trying to paddle upstream in a river that has a velocity of 6.1 m/s. If he can paddle his canoe at a velocity of 6.2 m/s, will he make any headway? What will his velocity relative to the shore be?

asked by Caroline
103. ## Math

Two health insurance plans are offered to employees of a company. Plan 1 has a \$400 deductible and then pays 65% of the rest of the cost versus plan 2 that has a \$1000 deductible and then pays 75% of the rest of the cost. What would annual medical costs

asked by Tony
104. ## math

6 eggs \$1.00 12 eggs \$2.00 18 eggs \$3.00 What is the constant proportionality that relates the price to the quantity of eggs?

asked by thomas langston
105. ## algebra

A field goal is 3 points and the extra point after a touchdown is 1 point. a player made 21 field goals and extra point kicks for 49 points. Find the number of field goals and extra points that he made. FG= x extra point =y =49 x+y=49 did i set up the

asked by Donna
106. ## language arts

which of the following statements best summarizes the "fiddler's bill" Bostonians had to pay for the tea party as described in section 1 of chapter 7 in chapter Johnny Tremain? A The port of Boston was closed to all ships, numbers of workers lost their

asked by kay
107. ## History

What were the major changes in sciences view of the nature of the universe and humanity's place in it between 1850 and 1914? How did these developments contribute to the age of anxiety? How are these changes reflected in philosophy, psychoanalysis, and

asked by Alan
108. ## Math

Lindsay bought six cds at the mall: the original price was \$13 each but she got a discount, and only paid a total of \$58.50 for all six. what was the discount

asked by Anonymous
109. ## Math

Let y = sqrt(7-x) Find the differential dy when x= 1 and dx = 0.4 Find the differential dy when x= 1 and dx = 0.02

asked by Anonymous
110. ## chemistry

What mass of AgCl will be obtained by adding an excess of HCl to a solution of 0.34 g of AgNO3 ?

asked by Joyeeta
111. ## algebra 1

(7p+3)(p+1)find each product

asked by Lexi
112. ## reimbursement

New medicare payments systems and implementation of SC HI both came out to the? A. Balance budget act. B. Federal act 33-2 C. Retrospective payment system D. Health maintenance organization

asked by a
113. ## CHEMISTRY

What is the effect of plus two degree celcius miscalibrated themometer on the enthalpy of neutralization?

asked by KONDWANI
114. ## math solution on algebra

If one side of equilateral triangle is 2 cm then find the area of this triangle

asked by nilesh
115. ## Statistics

What is the difference between normal distribution and approximate normally. Correct me if im wrong but I think the parameters of Normal is X~Normal (mu, standard deviation) but then approx. normal is X~Normal (mu, variation) im just really confused when

asked by Sarah
116. ## statistics

An IQ test was administered to a random sample of 26 mental patients and the mean was found to be 99.7. For this test, the population values are known to be normally distributed and with a population standard deviation of 15. Construct a 90% confidence

asked by Anonymous
117. ## statistics

find the area under the curve y=3log1.2x between x = 1.2 and x = 3

asked by joel
118. ## AVIATION SECURITY

who is responsible for hiring and training checkpoint security supervisors? 1. federal government 2. airport operators 3. airline carriers 4. airport security managers I think it's B

asked by Melina
119. ## english

mischief composition with 350 words

asked by Takunda
120. ## math

math question from applications of the derivatives. maths formula: V = 4/3(pi)r^3 dV = 4(pi)(3r^2) = 4(pi)r^2 But I don't understanding that how to get (3r^2) ?

asked by Maths Learner
121. ## math

A recipe calls for 4 part club soda to 3 part juice, how much juice is needed for 32 Oz of club soda?

asked by tara
122. ## biology,chemistry,physics

the contact process prepares purest form of sulphuric acid 2so2+o2=2so3 calculate its kp if following concentrations are found at equilibrium so2=0.59,o2=0.05 and so3=0.259

asked by Arooj
123. ## math

A tank is 1/4 filled of water.when 90 liters of water are pumped into it the tank becomes 3/4 full.how much water in liters does the tank hold?

asked by gani
124. ## Algebra 1

How many solutions does this system have? *3x + 6y = 10 -3x + 6y = -4

asked by Steve
125. ## Algebra 1

The cost of 4 scarves and 6 hats is \$52.00. The cost of 2 hats is \$1.00 more than the cost of 1 scarf. What is the cost of 1 scarf?

asked by Steve