Questions Asked on
May 21, 2014

physics
A uniform rod 30cm long is pivoted at it's center. A 40N weight is hung 5cm from the left end. where must the 50N weight be hung to maintain equilibrium?

thermodynamics
design a 1200W electric hair dryer such that the air temperature and velocity in the dryer will not exceed 50 C and 3 m/s respectively

maths/permutation and combination
Find the number of ways, the digits 0,1,2 and 3 can be permuted to give rise to a number greater than 2000. Please I need an explanatory workings!!!

Life sciences, Business studies,Maths lit and CAT
With Life sciences, Business studies,Maths lit and CAT, what can I study after matric? Which career field should I follow?

Physics  check answers please
The earth's magnetic field a) is slightly off centre compared to the Earth's rotational axis of rotation b) has its magnetic south pole at the geographic north pole c) attracts the north end of the compass needle to the geographic north pole d) all of the

Calculus
a rectangular storage area is to be constructed along the sides of a tall building. A security fence is required along the three remaining sides of the area. What is the maximum area that can be enclosed with 1000m fencing?

math ~dont know all but check some~ pls help!!!
1. Draw a model to represent the polynomial x2 + 2x + 4. (1 point) 1 big square, 1 tall rectangle, 4 little sqaures 1 big square, 2 tall rectangles, 4 little sqaures in the shape of an "L" 2 big sqaures, 4 little squares none of these 2. Simplify the

Algebra
Participants in a study of a new medication received either medication A or a placebo. Find P(placebo and improvement). You may find it helpful to make a tree diagram of the problem on a separate piece of paper. Of all those who participated in the study,

Economics Help
An example of a positive externality is A. noise B. crime C. parks D. trash I think the answer is C. Parks. Will someone tell me if i'm wrong or right please.

physics
A man stands on his balcony, 120 ft above the ground. He looks at the ground, with his sight line forming an angle of 50 degrees with the building, and sees a bus stop. The function d = 120 sec θ models the distance form the man to any object given his

Spanish
Hola Sra. Do these look ok? Part I ¿Conoces esta foto? 1. Es una vista del interior de la Mezquita de Córdoba. Tomando en cuenta la información en las secciones de Cultura en contexto (semanas 2 y 11) y los textos culturales Sevilla monumental y La

statistic
A survey of households in a small town showed that in 500 of 1,200 sampled households, at least one member attended a town meeting during the year. Using the 95% level of confidence, what is the confidence interval for the proportion of households

English
14. Read the following lines from Edgar Allan Poe's "The Raven" And the Raven, never flitting, still is sitting, still is sitting On the pallid bust of Pallas just above my chamber door; And his eyes have all the seeming of a demon's that is dreaming, And

Physics Please help3
A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = 4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point

English
Which of the following parenthetical citations is placed and punctuated correctly? A.) Edgar Allan Poe was morn in Massachusetts in the early nineteenth century (Freeman 311). ********** B.) Edgar Allan Poe (Freeman 311) was born in Massachusetts in the

English
choose the word that best completes the sentence. 1. One of the boys forgot backpack outside in the rain. his*************************** its their they Sandra went to the movies with David and me. I.***************************** we. they. Yhough they were

Statistics/Probability
So I tried solving the first one and apparently failed miserably, attempted both twice and got it wrong each time and I have one submission attempt left, so any help is definitely appreciated! 1. Hotels R Us has kept the following recordes concerning the

English
10. For what reason doe Shirley Jackson likely use stock characters in "The Lottery?" A.) to draw attention to the story's plot and theme******************************** B.) to teach readers about stock characters C.) to order events in the story D.) to

English
Read the following lines from Marge Piercy's "To Be of Use" The people I love the best Jump into work head first without dallying in the shadows and swim off with sure strokes almost out of sight. They seem to become natives of that element, the black

science
What does selectively permeable mean???? A. selectively permeable means not letting anything in or out. B. selectively permeable means letting everything in and out. C. selectively permeable means only letting things in but never letting anything out. D.

Math  Inequalities
Please help with the following: What is an open dot, and what is a closed dot? Also, when are they used in inequalities? I am not really sure about what they are. The lesson has not taught me anything about open dots and closed dots. I have also looked

Science help!!!!
Passive transport involves movement of substances. A. from areas of lower concentration to area of higher concentration B. from areas of higher concentration to areas of lower concentration C. from areas in which the concentration has reached a balance D.

English
Identify the incorrectly punctuated sentence. A.) I went to the library and checked out two books, a movie, and an audio recording. B.) I promised to be on time for the are show so that I could help sign up the participants. C.)I want to learn more about

English
Choose the topic that best limits the broad subjects music. A.) famous pianists B.) modern rap music C.) history of the harmonica D.) history of "The StarSpangled banner" Not sure on this one. Please help Thanks.

English
Use your knowledge of prefixes and suffixes to determine the meaning of the bolded word in the sentence below. The salmon began their PERILOUS journey upstream. A.) without B.) forward advance C.) able to survive D.) full of danger**********************

Science Check Answers?
Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the

Math
Suppose you spin a spinner that is equally likely to land on any one of the numbers from 1 to 8. Which event has the same probability as P(not 2 or 3)?

English
Identify the word that has an error in capitalization. Destini plans to study engineering at Stanford university. A.) engineering B.) Stanford C.) university**************************** D.) no error Did you know that the largest lake in North America is

Algebra! Plz help~!
You have the numbers 125 written on slips of paper. If you choose a slip at random, what is the probability that you will select a number that is divisible by 5? You have the numbers 124 written on slips of paper. If you choose a slip at random, what is

Science (A&P)
Trace the path of food from the mouth to the large intestine and what occurs at each structure. Anything would be helpful because I am having trouble finding the answer.

Math
Amita decides that she wants the molds to have a square base.How many of the possible molds can she use?

Science Check Answer?
1. Name the components of the respiratory system in the order incoming air would encounter them during breathing. A. trachea, pharynx, larynx, alveoli, bronchi B. bronchi, larynx, alveoli, trachea, pharynx C. larynx, trachea, bronchi, pharynx, alveoli D.

furthermathematics
a particle is projected at an angle tita to the horizontal with an initial velocity U.if the maximum horizontal distance travelled is 20m and the greatest height reached is 10m.find U and Tita

English
Identify the correctly punctuated sentence in each group. A.) Do you know where Bailey shoes are? B.) Do you know where Bailey's shoes are?* C.) Do you know where Baileys' shoes are? D.) Do you know where Baileys's shoes are? A.) The man said Turn right at

English
Use context clues to determine the meaning of the bolded word in the sentence below. Her enormous job responsibilities PRECLUDE the option of a vacation this summer. A.) made impossible in advance************ B.) specified in advance C.) were in harmony

Algebra
A meteorologist says that the probability of snow today is 45%. What is the probability that it will not snow? • 2/11 • 9/10 • 11/20 • 9/11

Science help!!!!
What does selectively permeable mean???? A. selectively permeable means not letting anything in or out. B. selectively permeable means letting everything in and out. C. selectively permeable means only letting things in but never letting anything out. D.

Chemistry
A sample of H2 is collected over water such that the combined hydrogen–water vapor sample is held at a pressure of 1 standard atmosphere. What is the partial pressure of the H2 if that of the water vapor is 2.5 kPa? A. 103.8 kPa B. 98.8 kPa C. 2.5 kPa D.

Algebra please check my answers
1) The linear function f(x) contains the points (10, 29) and (2, 83). If g(x) = 25x  50, which statement is true? A. The functions f(x) and g(x) both have positive slopes.

math
Find the product 1. (2x)(10x) (1 point) 20x 12x 20x^2 5x 2. –3m(m + 8) (1 point) –3m2 + 24 –3m2 – 24m –24m^2 –4m + 5 3. 4d(2d – 9) (1 point) 8d – 36d –d –28d^2 8d^2 – 36d 4. (3x + 4)(x – 2) (1 point) 3x^2 – 2x – 8 x – 8 3x –

Chemistry
Ammonia is produced when Nitrogen gas reacts with Hydrogen gas, as shown by the equation below: N2 + 3H2 > 2NH3 If the percentage yield is 90%, what would be your experimental yield of NH3 if 145.8g of N2 react? 2) 2Mg + O2 > 2MgO A) If 50g of Mg

Chemistry
Ammonia is produced when Nitrogen gas reacts with Hydrogen gas, as shown by the equation below: N2 + 3H2 > 2NH3 If the percentage yield is 90%, what would be your experimental yield of NH3 if 145.8g of N2 react? 2) 2Mg + O2 > 2MgO A) If 50g of Mg

math 6 rule pattern
The same rule is used on each of these number column A to get the numbers in Column B. COlumn A B 3 5 0 1 3 3 6 13 Which could be the rule? Multiply by 2, then add 1 add 1 Subtract 2 Multiply by 3, then add 4 I picked that last one, But I know I am

math (last question #5) @Damon
5. (2y – 1)(4y – 3) (1 point) –2y + 3 8y^2 – 10y – 3 8y^2 – 10y + 3 8y^2 – 2y + 3 i did the rest (#1 and #3) but im stuck on #5, can u help Damon? thanx

algebra
A video rental company offers a plan that includes a membership fee of $6 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $48 per month for unlimited DVD rentals. If a customer borrows enough DVDs in a month, the two plans

Chemistry
Suppose that coal of density 1.5g/cm3 is pure carbon. The combustion of carbon is described by the equation C+O2> CO2 ∆H◦ = −394 kJ What is the value of q (heat) a ump of coal the size of 7.5cm*7cm*6.5cm is burned? answer in kJ what mass of water

Physcis
A bird lands on a bare copper wire carrying a current of 27 A. The wire is 8 gauge, which means that its crosssectional area is 0.13 cm2. (a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 7.2 cm.

Algebra
A website requires a fourdigit numerical password in which the digits cannot repeat. How many possible passwords are there? • 24 • 5,040 • 151,200 • 3,628,800

Sciencecheck my answers.
1. Which of the following effects would you expect if red blood cells were shaped like neurons? They would not be able to move as easily through capillaries. **** They would more easily carry out gas exchange in the alveoli. They would not need to be

math
In which quadrant does the terminal side of the angle with measure 245 degree lie? Quadrant I Quadrant IV Quadrant III Quadrant II None

English
Identify the degree of comparison for the bolded word. This new magazine about computers is very COLORFUL. A.) Positive B.) Comparative C.) superlative D.) none of the above The article on Web design is LONGER than the one on games. A.) Positive B.)

math
A train leaves LAX traveling 65 MPH and another train leaves NY traveling at 35 MPH…at what destination will they collide

Algbera
which angle is coterminal with an angle measuring 130 degrees? 230 130 490 490 none of these

Civics
A major US trade partner has gone to war with its neighbor. It's leader asked the United States for help. Which of the following statements is true about how the president will react? A. He will make a decision based on only his own feelings about the war.

English
Choose the best answer. Which sentence would make the best opening for a speech arguing for more nutritious school lunches? A.) Many students dislike the current lunch menus, and I feel they should be changed.******************************** B.) Evidence

Science/Health
2. Which of the following explains why the heart is organized so that it pumps blood to two different locations? A. to supply blood to two different sides of the body B. to allow a way for the blood to pick up new blood cells C. to move oxygenpoor blood

Language Arts /The Giver
1. What is the jonas apprehensive about at the beginning of the novel? A. a plane flying over the community B. a dream that he had recently C. the upcoming ceremony and his assingment ***** 2. In Jonas's community, members are released from the community

math
What does the word rational coordinates Mean? What are they used for and what is a real world problem that can help me understand it?

Chemistry
How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution reacts with excess aluminum metal? Show all of the work needed to solve this problem. 2 Al (s) + 3 Fe(NO3)2 (aq) yields 3 Fe (s)

Math
A chessboard has 8 rows and 8 columns. A rook and a bishop are put randomly and with equal probability among all pairs of squares of the board. a. What is the probability that the two pieces are put on the squares (1,1) and (1,2)? b. What is the

Algebra
The table below represents the function f(x). (6, 12),(5,8),(4,4), (3,0),(2,4),(1,8),(0,12). If g(x) is a linear function that has a slope of 3 and a yintercept of 9, which statement is true? A) The xintercept of f(x) is less than the

Calculus
A fragment of bone is discovered to contain 20% of the usual carbon14 concentration. Estimate the age of the bone to the nearest hundred years, given that Carbon1 is radioactive with halflife of 5730 years and the rate of decay is given by the following

English
The question was "What lesson or meaning do you think this story held for the British audience of the Victorian Era?" This is for the story The Mark of the Beast by Rudyard Kipling. I was thinking that the answer was that the lesson was that just because

Science
2. Adding a _______________ to an electric circuit would increase the magnetic field around a wire. a.) insulator b.) solenoid c.) resistor d.) conductor My Answer: conductor

Maths
find the equation of the perpendicular bisector of the line joining P(2, 4) to Q(5,1) A. 8y14x 13=0 B. 8y14x13=0 C. 8y 14x13=0 D. 8y 14x 13=0 Please I need someone to help me with this, with an explanatory workings.

Math 6 meters help
A fence encloses a rectangular field. The field is 4 meters longer that it is wide. The total length of the fence is 144 meters. What is the area in square meters of the enclosed field? Choices 1,192 1296 1292 1440 I have tried dividing but getting know

Science
1. Name the components of the respiratory system in the order incoming air would encounter them during breathing. A. trachea, pharynx, larynx, alveoli, bronchi B. bronchi, larynx, alveoli, trachea, pharynx C. larynx, trachea, bronchi, pharynx, alveoli D.

Science 1 question
5. Which of the following would be true during the inhalation phase of breathing? A. The lungs are inflated, oxygen concentration is high, and carbon dioxide concentration is low in the alveoli. B. The lungs are deflated, oxygen concentration is high, and

Algebra
Suppose you roll a red number cube and a yellow number cube. What is the probability of rolling any matching pair of numbers? (Hint: Add the probability of each of the six matches.)

maths
3sinpi/6 secpi/34sin5pi/6cotpi/4=1

Math 6 gemoetery
A business owner wants to have a rectangular parking lot resurfaced. The lot is 93 feet long by 58 feet wide. Basesd on a cost of $2.47 per square foot, the owner incorrectly estimated that it would cost $12,000 to have the lot resurfaced. Which could be

chemistry
i need to find the enthalpy for COF2 F2 (g) + CO (g) > COF2 (g) i found 507 but i am not sure if it is correct

Math
identify the center and radius of the circle with the equation (x+5)^2+(y2)^2=9 A. this equation represents a circle with center (5,2) and a radius of 3 units B. This equation represents a circle with center (5,2) and a radius of 3 units C. this

math 6 probability
Rick plays football. He makes 75% of his passes. He will be attempting two passes. Rick makes the first one. What is the probability that Rick makes the second pass? 25% 75% 100% 50% I think it's %50 ?

economics
What is the SA government proving providing and to whom?

Spanish
Spanish Help Me Plz!!^__^ _________ 1. La Marcha _________ 2. La Cruz de Guía _________ 3. La Bulla _________ 4. Los Nazarenos _________ 5. El Paso del Cristo _________ 6. Los Penitentes _________ 7. El Paso Palio a. crowds of people b. the members of the

science
ZnS(aq) + 2HCl(aq) > ZnCl2(aq) + 2H2S(g) what happens in this reaction means what changes& colour happens????

chemistry
Calculate a value for the solubility of (NH4)2C2O4H2O in g/100 cm3 at 298 K

Economics
What are the costs and consequences of providing the subsidies and welfare?

Business Math
248.24 is 50% of what number?

English
Dear Writeacher, thank you for the answer. Will you help me with two more questions? 1) Do you think it's possible to say "according to the opinion of many analysts" (I mean 'according' + 'opinion', or just "according to many experts")? 2) Do you think

Geometry
Using a 306090 triangle, if b = 12, find c? I can't seem to get any formulas to work for this. any help would be wonderful.

Math
1/a+1/b+1/c=1/2 aâ‰§bâ‰§c Please help me The math question

Algebra
write the equation of the circle passes through the point (√5,0) and whose center is the origin

Math
determine the midpoint of the segment whose endpoints are a(7 3 4) and b(3 1 0)

History
Explain why some british politicians thought it would be good for Great Britain to keep the colonies?

math
1 identify the coordinates of the vertex and the equation of the axis of summetry of the parabola x=2 (y1)^2+3 A. The vertex of the parabola is (1,3), and the equation of the axis of symmetry B. the vertex of the parabola is (3,1) and the equation of the

math 6 probaility
max flipped a pair of coins 60 times. On 24 occasaions, heads appeared on both coins. How is this outcome different from the expected outcome? It occurred 9 more times than expected. It occurred 4 more times than expected. It occurred 6 fewer times than

Maths (Integration)
Integrate(1+x/x^3)dx Don't know how to go bout this, if the numerator was a whole number it would ve been easier for me, Pls help me out.

u.s. history
ways in which life changed on the home front during WWI.

English
1. Why don't you start first? 2. Why not start first? 3. How about starting first? 4. What do you think about/of starting first? 5. How do you feel about starting first?  Are they all grammatical?

physics
At the top of a hill, a roller coaster has 67,500 J of kinetic energy and 290,000 J of potential energy. Gradually, the roller coaster comes to a stop due to friction. If the roller coaster has 30,000 J of potential energy when it stops, how much heat

geometry
there exists a circle with chords. the chords are congruent. their corresponding arc measurements are 80 degrees and 2x+10 solve for x

u.s. history
comparing the kinds of changes that took place in the United States during WWI with changes that took place in the U.S. following the attacks of September 11, 2001.

English
1. Do you sleep less than 5 hours a day? 2. I like you less than him. 3. I ate fish less than fruit. 4. I ordered fried chicken less than noodles. 5. I player soccer less than baseball. 6. I studied math less than English. 7. I helped Mother less than my

MATH
HOW DO YOU WRITE 21 MAY 2014 IN 5 LETTERS WITHOUT USING NUMBERS

u.s. history
Assignment: Students are organized into small groups. Students select the question(s) they would like to investigate on the influenza epidemic that began in 1918 using the following questions as a guide: i only need this one Where did it begin and how did

Algera
identify the vertices, the covertixes, and the foci of the ellipse x^2/4+y^2/9=1 A. the vertexes are (0,2) and (0,2). The covertexes are (3,0) and (3,0). The foci are ((0, 3√5) B. The vertex ices are (0,3) and 0.3). The covertex are (2,0) and

health
What is bone strengthening?

English
What kinds of toppings can people choose for Brussels waffles? 1. People can choose chocolate, ice cream, and fruit. 2. They can choose chocolate, ice cream, and fruit.  Are both answers grammatical? Then, which one is a common answer.

Jumba s.s.s.
Which impact would hv xenophobia to community

statistics
predict the score in statistics for a student whose score in mathematics is 30

Chemistry
Hey guys so I was absent for my class and my teacher STILL wants me to figure out how to do limiting reactant and theoretical yield I tried Khan academy and it was no use. So basically the first question is : My data is : Mass of lead nitrate = 5.03g and

Evaluate the expression.Algebra
Evaluate the expression. (9/6) (6/4) (3/1) I think this are combination I try three different ways, now I am not sure how to do it.

physics
A person has a 2 resistance coils. By using them singly, in series or in parallel, he obtains 2 ohm, 4 ohm, 12 ohm, and 16 ohm. What is the new resistance?

math
If a plant has a linear growth rate and 1 day after planting is 2x+4 and day four is 4x+8 Wgat is the growth rate?

Math
A video rental company offers a plan that includes a membership fee of $6 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $48 per month for unlimited DVD rentals. If a customer borrows enough DVDs in a month, the two plans

math
The scale on a map is 1cm :50 m.determine a distance of 4 cm in metres

Help Mrs.Sue LA
Courage to Speak “Any volunteers?” Ms. Chavez scanned the class. Ming slouched farther down in her seat. “Come on now, you’ll all have to interview someone sometime this year. No one wants to go first? Okay, I’ll just have to choose someone.” I

physics
A car with a mass of 2,000 kg has a kinetic energy of 900,000 J. How fast is it traveling?

Math
identify the vertex and the length of the transverse axis is 10 units, and the length of the conjugate axis of the hyperbola x^2/25y^2/16=1

Stats
I am working on a review sheet and got everything except for this one. I am not sure whether to use z or t. The number of hours per week that high school juniors watch TV is normally distributed with a mean of 8 hours and a standard deviation of 2 hours.

science
Passive transport involves movement of substances. A. from areas of lower concentration to area of higher concentration B. from areas of higher concentration to areas of lower concentration C. from areas in which the concentration has reached a balance D.

math
A construction company is laying natural gas Piping: pipeline. Several sections of pipe have been laid in a pile at the construction site. There are 12 sections of pipe in the bottom row of the pile. Each row has one less pipe than the row below it. There

Geography
How did Southeast Asians react to contact with many different religions?

math
Rich is 1.5 meters tall and cast a 0.75 meter shadow. At the same time a nearby flagpole cast a 3 meter shadow. How tall is the flagpole?

BIOLOGY please help
The first phase of somatic cell division is (A) __________, when the cell’s chromosomes condense, and the nuclear envelope that holds the chromosomes starts to break up. During this time, structures called the (B) __________ form from centrioles, which

math
c=2πr c= 7.12 pi= 3.14 find value of r rounded to 2 decimal points

Physics
2. How much energy would a body of mass 50kg need to provide for the following: a. Climbing a hill 500m high. b. Walking up steps 10m tall. c. Jumping 10cm up.

math
A line has a run of 5 feet and a rise of 13 feet. Determine the slope.

Algerbra 2
Billy buy a car for 16,400.his car depreciates in value 24% each year. What was the value after 2 years?

Maths/Algebra/Calculas
A square piece of paper 20cm by 20cm has equal sized squares cut from each corner, size x. What is the formula to work out the volume of this? Also what size squares cut at each corner would produce the largest volume open top box? Thanks for any help,

Civics
1. Who has the power and the United States to declare war? A. President. B. the senate. C. Secretary of state. D. Congress . 2. Which of the following issues relates most to domestic policy? A. Education. B. treaties. C. War. D. Military. 3. Which of the

Physics
A bird lands on a bare copper wire carrying a current of 27 A. The wire is 8 gauge, which means that its crosssectional area is 0.13 cm2. (a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 7.2 cm.

Precalculus
Find the values of x and y. Matrices.. [4 2 3 5 3 5 2 3 1] TIMES [2 x 5] EQUALS [9 38 y] It is difficult for me to type the matrices in but.... The first matrix is 3x3 consisting of 4,2,3 in the first row.. 5,3,5 in the second row ......2,3,1 in the

Math 6 proportion
21% reptiles, 11% are birds. There are a total of 1,500 animals in the zoo. Is this the correct proportion that I wrote to solve? 11/21 = r/1,500

Algebra
Need help, I think it is 2/25. Do you have an equation that I can figure it? You choose a marble at random from a bag containing eight brown marbles, six yellow marbles, and one purple marble. You replace the marble and then choose again. Find P(both

english question
i think its A. or C. Which among the following sentences is the most effective opening line (hook)? A.I hope that if you will read my paper, you will believe me when I tell you that John F. Kennedy was not assassinated as the result of a plot but by a

science
Write balanced chemical equations (using symbols) for the following reactions 1.hydrochloric acid reacts with magnesium to form magnesium chloride and hydrogen 2.Nitrogen monoxide burns in oxygen to form nitrogen dioxide

math
The 3rd term in an arithmetic sequence is 12, the 7th term is 24, a) How many common differences are there between a_3 and a_7? b) What is the common difference of the sequence? c) What is the first term in the sequence? a_1 d) What is the expression for

Social Studies Help? Thanks!~ :3
Name two geographic obstacles and one political obstacle that stood in the way of the construction of the Panama Canal. How did engineers and politicians overcome these obstacles?

Socials
Summarize the impact each of the 3 components in the national policy had on political considerations. Protective tariffs Increased immigration CPR (Canadian pacific railway) I already did half of this question because it asked for the impact these 3 had on

ECONOMICS
WHAT IS THE SOUTH AFRICAN GOVERNMENT PROVIDING AND TO WHO?

Algebra
You take a three question trueorfalse quiz. You guess on all the questions. What is the probability that you will get a perfect score?

algebra
Use a calculator to evaluate an ordinary annuity formula A = m 1 + r n nt − 1 r n for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) $150; 5%; 40 yr A = $

Math
six people can sit in one table that is rectangular when two tables are placed together ten people can be seated how many people can be seated with three tables?

Algebra
What are the solutions of the equation 18x^2  25x  3 = 0? A. 1/9,3/2 B. 9, 3/2 C. 9,2/3 D. 1/9, 3/2

English
identify the sentence in which the bolded verb does not agree with its subject. A.) Everyone on the team WORKS together well. B.) Both of them ARE LOOKING forward to the field trip. C.) Neither of the boys IS EXCITED about playing

Algebra/Permutation
How do I solve this problem. I try just 1 than just 4 nether were right, than I try 4/4r the Problem is 4Pr Thank you

help please on this
Making a vaccine for HIV is difficult because the virus has a rapid rate of (A)__________. This is because it is a(n) (B)________  its genetic material is RNA instead of DNA.

Calculus
1/X by first principles

Math 6 properties label
43 + (57+69) (43+57)+69 Are these associative,Commutative, Identity, Inverse property of addition? I feel it is Associative Property of addition.

math
there is a monthly fee of $35 at your fitness center. You have spent $700 in fees at the fitness center since you have joined.Write and solve an equation to determine how many months you were a member

English
What is the subject and the verb of the sentence : A police officer stepped into the street and stopped cars .

chemistry
Calculate the current in ampheres required to produce 15.0g in 2 hrs.

u.s. history
ways in which life changed on the home front during WWI. can i put that it caused everyone to ration. most ppl would plant victory garden and buy good in stores to send to the troops. everyone had stamp book which they could buy things in the store. kids

algebra
i'm thinking of two numbers, x and y. The sum of 4x and 1 is y. The sum of y and twice x is 13. Find x and y.

Math
The number p is the product of three different positive prime numbers greater than 2.If the sum of these three prime number is also prime, what is the smallest possible value for p? Won't the 3 number be 3511? Thanks

math
you have $5 for lunch. You bought a turkey sandwich for $2.25.Write and solve an inequality to show much more can spend.

Economics help please!
An automobile company is building a new factory in your town. What may be a positive externality of this event? A. Noise produced by the workers and factory machines. B. Better schools from increase in property tax revenue C. Reduction of contaminants in

Algebra 2
Given the point A(2,1) on the terminal side of angle 0, what is the value of the cosecant of angle 0?

Math Help!
1. Find the product. (2x)(10x) 20x 12x 20x^2 5x 2. 3m(m + 8) 3m^2 + 24 3m^2 + 24m 24m^2 4m + 5 3. 4d(2d  9) 8d  36d d 28d^2 8d^2  36d

u.s. history
changes that occurred during WWI and after 9/11?

math
explain how to graph the inequality 13>=x

Calculus
find the coordinates y=x(2x) where the gradient is 2

History of KKK
the history of the KKK and their activities in the postwar South a. What conditions led to the formation of this group? b. What were their tactics? c. What was the result of the activities?

Algebra 2
what is the exact value of cos 5pi/3 radians

Algebra
A bag holds 20 yellow mints and 80 other green or pink mints. You choose a mint at random, eat it, and choose another. Find the number of pink mints if P(yellow then pink) = P(green then yellow). What is the least number of pink mints if P(yellow then

math
A music concert was attended by 450 people. Adult tickets sold for $70 and children’s tickets for $40. If total sales were $27,750, how much of each ticket was sold?

Economics
People are more likely to clean up waste in their homes than at a community park because.. A. people expect the community park to be dirty. B. hiring a person to clean the home is expensive. C. they own and therefore feel responsible for their home. D.

Economics help please!
A decision making model is more beneficial than simple comparing costs and benefits because A. the decision making model encourages you to consider multiple options. B. a costs and benefits analysis encourages you to consider multiple options. C. the costs

math/financial planning
bill is in a 30% marginal tax bracket and lives in los angeles and has invested $20,000 in corporate bonds which earns average annual income of 7.5% what will be bills tax return for the current year?

math 6 algebra
Mikayla wrote the equation below to calculate y, the total amount of money in dollars she will have saved after she has been saving for x weeks. y = 6x + 80 How much more money will Mikayla have saved after 8 weeks compared to 5 weeks? $8 $18 $98 $128 How

Science(chemistry)
Give one word/term for the following description in any given chemical compound,the elements always combine in the same proportion with each other

language arts check
The word simulation originally refers to the act of imitating. What meaning of the word is used in this excerpt from "What Makes Teens Tick?" "In an experiment using a drivingsimulation game, he studied teens and adults as they decided whether to run a

English (Checking please)
According to the author, it is difficult for people to comprehend what when on at Auschwitz because the events are so terrible that readers have never experienced anything similar.

math
ted has $20,000 invested in mutual bonds from the city of L A.these bonds pay an average return of 5.4% what is the after tax return for the current year on this municipal bond?

Math 6 scale math
A model of a rail road station has a scale of 1 inch equals 3.5 feet. The dimensions of the model railroad are 34 inches by 18 inches. What are the dimensions of the actual railroad station? 3.5 feet by 18 feet 34 feet by 63 feet 102 feet by 63 feet 119

Physics
what is the role of a commutator in a DC motor?

Physics
How do observations of the photoelectric effect conflict with the predictions of classical physics?

chemistry
The volume of a gas is 150 mL at 240.0 kPa pressure. What will the pressure be when the volume is reduced to 100.0 kPa, assuming the temperature remains constant?

Algebra
You spin a spinner that has eight equalsized sections numbered one to eight. Which event is least likely to occur? • The number is even. • The number is less than three. • The number is greater than three. • The number is a multiple of five.

Calculus
a meteorite slams into the earths crust and penetrates d=(1200t36000t^2)m in t seconds after impact. What is the maximum depth of penetration?

Science
When a cell is infected with a virus, what is produced for future protection? i thought it was good bacteria but i don't think a cell can do that. So confused.

Economics
A decision making model is more beneficial than simple comparing costs and benefits because A. the decision making model encourages you to consider multiple options. B. a costs and benefits analysis encourages you to consider multiple options. C. the costs

Chemistry
Stoichiometry; Find the percent yield of solid calcium carbonate made when 5.0 mL of 1.0 M Sodium Carbonate reacts with 0.40g Calcium Chloride Balanced Equation; Na2(CO3)+CaCl2>2NaCl+CaCo3 could you please help me step by step to find the theoretical

Science Check Answers
1. A kitchen ceiling light has five light bulbs on it. When one of the lights goes out, the other four bulbs stay lit. This is an example of a series circuit. True OR False My Answer: True 2. Adding a _______________ to an electric circuit would increase

math test
A new cruise ship line has just launched 3 new ships: the Pacific, the Caribbean, and the Mediterranean. The Caribbean has 32 more rooms then the Pacific. The Mediterranean has 38 fewer rooms than FOUR times the number of rooms on the Pacific. Find the

language arts check
4. The Latin word alius means "other." Which of the following words contains this root? alien alight alike** alignment

trianom
the min. of a clock is 9 inches long and move from 6 to 8 o'clock. hor far does the tip of the min. hand move?

Math 6. Correct?
Amy is making scale drawings of different things in her neighborhood. One house she drew is 30 feet wide. Her scale drawing of the house is 5 inches wide. Which of the following uses the same scale Amy used to draw this house? Is this right my answer

Science
To lift a load to the roof, you apply 21 N of force to a pulley. The pulley applies 21 N of force to the load. What is the mechanical advantage of the pulley? A.0 B.1 C.40 D.21

Movie comprehension
I missed class and did not watch " Never Cry Wolf". So .... What did the wolf do to Tyler's suitcase? How did Tyler respond to the wolf's actions and what was the meaning of his responses?

chemistry
How many grams of magnesium metal will react completely with 5.2 liters of 4.0 M HCl? Show all of the work needed to solve this problem. Mg (s) + 2 HCl (aq) yields MgCl2 (aq) + H2 (g)

fifth grade math
susan picked a watermelon that weighed 8/15 lb. larry a watermelon that weigh 1/4 as much as Susans. how muchdid larrys weigh

HIS204
Question 1.1. The Depression reached its most devastating point in the months between FDR’s victory and when he entered the White House. However, he proclaimed that there was only one thing that the American people needed to be fearful of. Which of the

Calculus
x(x^21)^3 using change of variable

Calculus
xe^x using integration by parts

Calculus
2x  (x2)(x+2) using partial fractions That's supposed to be a division sign of some sort

chem
a hydrocarbon has an empirical formula CH and a vapour density of 39. Determine its molecular formula. solution.................................................... CH=12+1 n=13 13n=39 =3

Calculus
Find the area of the region enclosed by the parabolas y=x^2 and y+2xx^2

Algebra
What is the probability that a number picked from the set {–4, –3, –2, –1, 0, 1, 2, 3, 4, 5} will be a solution of 2x + 5 > 1? • 20% • 30% • 70% • 80%

Calculus
Find the volume of the solid generated by rotating about the y axis the area in the first quadrant bounded by the following curve and lines. y=x^2, x=0, y=2.

Biology
During exercise, (B) __________ muscles in the walls of the veins contract and cause the vein walls to stiffen so more blood flows to the heart and lungs.

Physics Please help
A thin, horizontal 20cm×20cm copper plate is charged with 1.7×10^10 electrons. Consider the electrons are uniformly distributed on the surface. A. What is the strength of the electric field 0.1 mm above the center of the top surface of the plate? E=____

Physics Please help2
Two small insulating spheres with radius 7.00×10^−2m are separated by a large centertocenter distance of 0.565m . One sphere is negatively charged, with net charge 2.05μC , and the other sphere is positively charged, with net charge 4.10μC . The

Physics Please help4
Two 1.50cm diameter disks spaced 1.80mm apart form a parallelplate capacitor. The electric field between the disks is 5.10×10^5 V/m I got the voltage as =918 but B. How much charge is on each disk? _________C? and C. An electron is launched from the

algebra
Tarot cards are used for telling fortunes, and in a reading, the arrangement of the cards is as important as the cards themselves. How many different readings are possible if four cards are selected from a set of seven Tarot cards? Thank you

Statistics
A confidence interval for a population mean has a margin of error of 3.1. a)Determine the length of the confidence interval. b)If the sample mean is 56.7, obtain the confidence interval.

Science(chemistry)
Give one word/term for the following descriptions during this type of reaction,the appearance,colour or shape of a substance is changed

maths
prove that sin sqared pie/6+ cos sqared pie/3tansqare pie/4=1/2 in trigonometry

Writing
13. Which of the following is a complex sentence? A. I would like to visit the Kinshasa, but I understand the city is unsafe for foreigners. B. As Jake was reading the letter from June yet again, the flight attendant coughed gently to get his attention. C.

geometry
If Dave is 6 feet tall and casts a shadow of 15 feet, what is the height of a tree that casts a shadow of 81 feet? Draw a diagram and solve for the height of the tree.

Algebra
13a+9b2a4b

maths
2sinsqaredpi/6+cosecsqared7pi/6cossqaredpi/3=3/2

trignometry
2 sinsqarepi/6=cosecsqare7pi/6 cossqare pie/3=3/2

Math
What is a unit rate?

MATH
There are 8 boys, 12middle schoolers and 8 girls. what is the ratio of girls to boys?16/12=4:3 divide both sides by 4

maths
2sinsqaredpi/6+cosecsqared7pi/6cossqaredpi/3=3/2 in trignometry

Math 8th gr.
27  (9) (2) ÷ 3 * (4)  0  33  (39)

math
15  (37) + 6 * (2) + (8)  9

History
in which ways did the colonies of British north america benefit from the intercolonial railways

math 8th grade
15  (37) + 6 * (2) + (8)  9

Math 8th Grade!!!!
27  (9) (2) ÷ 3 * (4)  0  33  (39)

math 6 probability
Eric has a spinner that is divided into different colored sections that are the same size and shape. On any spin the theoretical probability of the arrow landing on the red section is 1/5. When Eric spun the arrow x number of times, the arrow landed on the

science
i need to find the enthalpy for COF2 F2 (g) + CO (g) > COF2 (g) i found 507 but i am not sure if it is correct

English
Hello. I will be very grateful if you check the sentences: 1)"Do you think students are not allowed to use dictionaries while writing tests?" 2)"Do you think using dictionaries is not allowed while writing tests?" Do they sound natural and standard

Maths
Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 .

Math,english,lo,ancilury,art&culture,setswana
Simplify the following ratios.6:72

science help !!
1. Why is California’s highspeed rail such a groundbreaking effort? 2. Why will it take so long to complete the highspeed rail route?

math
A section of a hiking trail begins at the coordinates (7, 5) and follows a straight path that ends at the coordinates (3, 9). What is the rate of change of the hiking trail?

Math
identify the center and radius of the circle with the equation (x+5)^2+(y2)^2=9 A. this equation represents a circle with center (5,2) and a radius of 3 units B. This equation represents a circle with center (5,2) and a radius of 3 units C. this

Romeo and Juliet
Shakespeare departs from Aristotle's idea about the hero's recognition. In Romeo & Juliet, it is not Romeo who experiences recognition, but other characters in the play. Who are these characters, and when does the recognition occur?