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Physics!
At a steam power plant, steam engines work in pairs, the output of heat from one being the approximate heat input of the second. The operating temperatures of the first are 520°C and 320°C, and of the second 310°C and 170°C. If the heat of combustion of coal is 2.8x107 J/...

History
What is a good first sentence of my homework paper its about the 1992 L.A. Riots.??

IP law
5. Given that an infringer has been selling within your own country (Country A) her domestically-produced illegitimate copies of your Number One selling song, which one of the following four choices would normally be the first action you would take to enforce your copyright? a...

ss
Historians generally agree that the first international slave trade in Africa was A) with Portuguese traders. B) across the Indian Ocean. C) across the Sahara Desert. D) the Trans-Atlantic Slave Trade. ***

Health (Check)
1. Lucille has been told she needs to improve her heart health, and she is ready to get started. There are many activities she is considering for her new routine, but she knows she must first calculate her target heart rate zone. When is the best time for her to begin ...

statistics
In the distributions of two populations combined mean of fourteen observations is 14 and if the sum of the first seven observations for population one and mean of population two are 90 and 16 respectively ,then find the last (eighth)observation of population one and the mean ...

Algebra
In the expression -7x - 5x^2 + 5, what is the coefficient of x? A.) 7 B.) 5 C.) -5 D.) -7* I don't know if -7 or 5 is the coefficient, but -7 was my first choice. Can someone check this?

Math
A drawer contains 2 red socks, 3 white socks, 3 blue socks. Without looking , you draw out a sock, then return it, and draw a second sock. What is the probability that the first sock is blue and the second is red? 3/8, 2/5, 29/32, 3/32

English
1. which of the following is an example of accidental plagiarism? A. Submitting a paper that was written by a friend. B. copying information from a source and identifying it as your own C. Summarizing information without including a source credit D. Forgetting to include an in...

Civics
Which of the following is the best example of a domestic policy? A resolution to join an international trade organization A decision to limit immigration to the United States A decision to send financial aid to another country after a natural disaster A resolution declaring ...

Algebra 2
Find the values of the inverse function in radians. sin^-1(0.65) a. 0.71+2pi n and -0.71+2pi n b. 0.71+2pi n and -3.85+2pi n c. 0.86+2pi n and -0.86 +2pi n d. -0.61+2pi n and 2.54+2pi n 2. tan^-1(0.09) a.-0.09+2pi n b. no such angle exists c.-1.48+ pi n d. -0.09+ pi n I've ...

Maths
If the lcm of first 20 natural no. is x then find the lcm of first 25 natural no.

womens college
If the second term of a g.p. is 27 and 7th term is 1/9. Find the first term and the common ratio?

math
The question is: the table below lists the total cost for parking for a period of time on the street in NYC. The total cost for any time up to and including the hours parked. For example, parking up to and including 1 hour would cost $1.25; for 3.5 hours parking would cost $5....

Math
1.Mia charges $2.25 per hour when she babysits, plus $5.00 for transportation expenses.Which function rule represents the amount y mia charges to babysit for x hours? A)Y = 2.25x + 5.00*** B)X = 5.00y + 2.25 C)Y = 5.00x + 2.25 D)Y = 7.25x 2.(So this one is my updated answer, ...

math
The first term of a GP is A and the common ratio is R Given that A=2r and the sum to infinity is 4.calculate the third term

math
The fourth term of a GP is 6 and the seventh term is -48,calculate (a)common ratio (b)first term(c)sum of the first eleven terms

math
The no of terms in an AP is 40 and the last is -54,given that the sum of the 15 terms added to the sum of the first 30 terms is zero.calculate(1)the first term and common difference.(2)sum of progression

Algebra
What are the first four terms of the sequence represented by the expression n(n - 1) - 4? A.) -2, 2, 6, 10 B.) -3, 0, 3, 6 C.) -4, -2, 2, 8 D.) -5, -4, -2, 6 I don't get this question, can someone help please?

Mathematics Algebra
Question: If the expression (x^2 + 2x +4)/(x^2 - 2x - 4) has a value between (1/3) and 3 for all real values of x, determine the range of the expression [9.(3)^x + 6.(3)^2x + 4]/[ 9.(3)^2x - 6.(3)^x +4 My thoughts on the question: I can see that if we substitute x=[3.(3)^x] we...

history
Can anyone please paraphrase the first amendment

science
the energy role of the first organism in a food chain is always

m
what are the first four terms represented by n(n-2)-3

Business
Help? I'm not good at business 1. Jacob is leading the strategic planning meetings for the nonprofit organization he works for. They are a new organization and are working toward getting all staff on the same page regarding the big picture and goals of the organization. What ...

Math 6b
The spinner is divided into equal parts. Use a tree diagram to find the probability that the spinner will land on a consonant the first time and a vowel the second time if the spinner is spun twice My spinner has 3 parts, N E and U A:2/3 B:2/9 C:3/4 D:5/9 I think the answer is...

math
Janine is considering buying a water filter and a reusable water bottle rather than buying bottled water. Will doing so save her money? First, determine what information you need to answer this question, then click here to display that info (along with other info). How much ...

Math
The price of a table was Rs 1000.it was first increased by 30%.after a week the shop owner decreased the price by 25%.what is the new price of the table.

Math
You start searching for a buried object by marking the center of a field as (0, 0), with coordinates giving distances in yards. Coordinates to the north or east are positive, and coordinates to the south or west are negative. You find nothing at (-10, 6), so you try a likely ...

physics
Someone drops a ball from the roof of your building.The ball drop past your window. It takes time T to pass the window's height. What is the initial speed of the ball when it first came in view?

Physics
A body is moving with uniform acceleration covers 100m in the first 10s and 150m in the next 10s. Find the initial velocity of the body.

Science
Can someone help me/check with this work? 1. _______ is the rate of change of position. A.Speed***** B.Velocity C.Acceleration D.Deceleration 2. Which of the following is the difference between speed and velocity? A. direction***** B.units C.speed D.none of the above 3.A ...

Math
I have done the work on all of these problems so please don't give me lectures about cheating, I'm not 8 years old. 1.Given the function rule f(x) = x^2-3x+2, what is the output of f(-2)? A)-8 B)0 C)4 D)12*** 2.The data in the table represents a linear function X:-3,0,3,6 Y:-5...

MATH
.)Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 4 bulbs. In the second year, it produced 8 bulbs, and in the third year, it produced 16 bulbs. If this pattern continues, how many ...

HELP!!(english)
Follow this l*ink to see question!! It's on Brainly. (I think it's the first option... also, get rid of the spaces in the l*ink, i just put them there so jiskha would let me post) ht tps :/ /brainly. com /question/ 3764416

Math Help
The sale price of shrimp at a local grocery store is $1.15 for the first ounce and $0.95 for each additional ounce. Which function rule shows how the cost of shrimp, y, depends on the number of ounces, x? A.y=1.15x+0.95** B.y=(0.95+1.15)x C.y=0.95x+1.15 D.y=0.95(x-1)+1.15 Am ...

Biology!!
1. what's a huge difference between the chemical equations for Respiration and Alcoholic fermentation &... What determines whether a facultative organism will go through respiration or fermentation *For the first part of the Question, (I looked it up but I wasn't sure if it's ...

calculus review please help!
Write the integral in one variable to find the volume of the solid obtained by rotating the first‐quadrant region bounded by y = 0.5x2 and y = x about the line x = 5. Use the mid-point rule with n = 4 to approximate the area of the region bounded by y = -x^3 and y = -x. A ...

Literature
Since the time of the play's first performance, the props and set have been designed to be minimal so that_____. the play can be performed in outdoor as well as indoor locations the play becomes more appealing for younger audiences **my choice actors must think of new ways to ...

calculus
priya decides to go to the store which is 8km from her house. she first ran at a rate of 7km/h then walked the rest of the trip at a speed of 3km/h. if the total trip took 2hrs how many kilometers did she walk?

Math
write the first five terms of a sequence where the first term is 8 and the common difference is 6. My answer: 8,14,20,26,32

English
1) I had to wrack my brain and plum the depths of my resources the foul consequences of my previous vice. Which of the following homophones should be used to correct the sentence above? A. Fowl B. Plumb C. Rack D. Vise 2) Which of the following sentences correctly uses subject...

Science
A ball is dropped from a height of 20 meter and rebounded with a velocity which is 3/4 of the velocity with which it hits the ground. What is time interval between the first and second bounces?

Math
In a particular arithmetic progression, the sum of the first 10 terms is equal to the sum of the first twenty terms. Show that the sum of the first 30 terms is equal to 0.

bearing
A ship is due east of a harbour. Another ship is also 3km from the harbour but on a bearing 042 degrees from it a. Find the distance between the two ships b. Find the bearing of the second ship from the first ship

Science
A family is planning to build a raised planting area using a blend of peat moss, mulch , and a rich organic soil in which to grow the plants. They have been told first to place on the ground a layer of material that will allow for a proper drainage each time the plants are ...

Math (Algebra)
I have to solve a few systems through elimination, but I'm still not quite sure how to do it.. The first is y=x^2 and y=x+2 Can someone show me how exactly it is worked out so I can try the second one myself?

English
1. Read the following passage from "The Swimming Contest." With a sigh my mother replies, "My husband's no longer alive, either. But his house and his father's house aren't here; everything remained over there, abroad, and I live in a rented apartment summer and winter." "That...

World history b
What steps has the international community taken to address humanitarian crises throughout the twentieth and twenty- first centuries, including human rights abuse? Evaluate the effectiveness off the international response to at least two human rights issues.

English 2nd post (Can someone please check my work
1. Read the following passage from "Another Evening at the Club." Putting the ring away in his pocket, he bent over her and with both hands gently patted her on the cheeks. It was a gesture she had long become use to, A gesture that promised her continued security, that told ...

physics
A car is moving at 20 m / s before it applies the brakes for 4 s. It slows at a constant rate to 10 m / s. Five seconds after this, the brakes are applied again and stop the car in 5 seconds. The car slows at a constant rate during this period of time as well. What is ...

MATH
1. A yogurt shop offers five different flavors of frozen yogurt and thirteen different toppings. How many choices are possible for a single serving of frozen yogurt with one topping? 70 56 18 65** 2. Prestige Builders has a development of new homes. There are five different ...

English
1. Read the following passage from "Another Evening at the Club." Putting the ring away in his pocket, he bent over her and with both hands gently patted her on the cheeks. It was a gesture she had long become use to, A gesture that promised her continued security, that told ...

math
Ann began her homework at 3:55 P.M. She spent 15 minutes on her first assignment, and 40 minutes on her second assignment. At what time was she finished with both assignments?

History
1. The states below were added to the Union during the decade following the War of 1812: Indiana (1816) Mississippi (1817) Illinois (1818) Alabama (1819) Maine (1820) Missouri (1821) Which statement best explains how the War of 1812 contributed to the growth of the United ...

SOCIAL STUDIES PLEASE CHECK ANSWER
Which U.S. policy would Palestinian supporters of the Palestinian Liberation Organization have most likely preferred? A. continued U.S. support for Israel B. support for a peace treaty between Israel, Egypt, and Palestine C. military aid to Yasir Arafat for the fight against ...

Math
First Bank charges $4.50 per month for a basic checking account plus $0.15 for each check written. Citizen's Bank charges a flat fee of $9. How many checks would you have to write each month in order for the cost to be the same at both banks?

Social Studies Please Check Answer
Why did the US most likely offer economic aid to Russia and Eastern Europe during the 1990s? A) to encourage them to break ways from the Soviet Union B) to politically dominate new governments in the region C) to help stable democratic governments emerge in the region***** D) ...

Science
A car travel along a straight line for first half time with speed 40km/hrs & second half time with speed 60km/hrs. Find average speed.

History
1) infer which "great victory" the author references in the excerpt. A) election of the first female governor B) success of the first women labor strike C) passage of the equal rights amendment D) passage of the 19th amendment

Statistic
15% of m&m's candies in a bag are yellow. If you randomly pull 3 m&ms of the bag what is the probability the first one is yellow and the next two are not? A. 11% B. 22% C. 67% D. 85% My answer is D. 1 - 15% =0.85. I think I'm doing it wrong

Math
In order to get an A in a class, your test scores must average at least 92%. On the first 6 tests, you have an average of 91%. What score do you need to get on the last test to earn an A?

Language Arts
horeau’s ideas had a profound effect on a man named Gandhi. Gandhi, was a leader in India who worked to end British rule. He led India to independence and inspired many to non-violent forms of protest and resistance. He fought to end poverty, worked to expand women's right ...

Language Arts
Thoreau’s ideas had a profound effect on a man named Gandhi. Gandhi, was a leader in India who worked to end British rule. He led India to independence and inspired many to non-violent forms of protest and resistance. He fought to end poverty, worked to expand women's right ...

social studies HELP PLEASE
1. IN the eastern outbox church, icons were? 2. The pope is the leader of? 3. Which city was important in the acceptance of Christianity in England? 4. According to the biblical passage, which group is blessed? 5. What dose Jesus say is the inheritance the blessed ones receive...

Chemistry
So this is a three part question. I solved the first part correctly but I need help with the second and third. Q: The dissociation equilibrium constants for the protonated form of of alanine (a diprotic amino acid, H2X+)are Ka1 = 4.6 x 10^-3 and Ka2 = 2.0 x 10^-10. Assume that...

US HISTORY
1. How did the Iranian Revolution impact the United States? 2. What was Ronald Reagan’s view on the US government? 3. What are the Moral Majority and the “Contract with America?” 4. What did the falling communist regimes in Eastern Europe have in common? 5. Define “...

Geometry
Two square pyramids have the same volume. For the first pyramid, the side length of the base is 5 in. and the height is 9 in. The second pyramid has a height of 1 in. What is the side length of the base of the second pyramid? Thanks in advance!

Math MS. SUE PLEASE HELP!!
Rolinda’s first five Spanish test scores are 85, 85, 60, 62, and 59. a. Find the mean, the median, and the mode of Rolinda’s Spanish test scores. Round your answers to the nearest tenth, if necessary. b. Which of these measures best supports Rolinda’s claim that she is ...

math
How many arrangement are possible from word "DIRECTION" so that a consonant from the first half of english alphabet occupies only the first position and vowels only the last position? (ans 36)?

physics
A tube that is open on both ends is 4 meters long. Assuming that the speed of sound is 340m/s, find the following: a) What is the wavelength of the fundamental standing wave (the first harmonic) b) What is the frequency of the fundamental wave? c) What is the frequency of the ...

Random
A room has five corners, one of the five has an angle is 179 degrees what would be the measure meant of the other angle if the sum of two of the unknown angles is 60 and the sum of the other two is 3 less than the sum of the first two. my first question is, IS THIS EVEN ...

physics
A tube that is open on both ends is 4 meters long. Assuming that the speed of sound is 340m/s, find the following: a) What is the wavelength of the fundamental standing wave (the first harmonic) b) What is the frequency of the fundamental wave? c) What is the frequency of the ...

Literature
Since the time of the play's first performance, the props and set have been designed to be minimal so that the play can be performed in outdoor as well as indoor locations the play becomes more appealing for younger audiences **my answer actors must think of new ways to ...

Stat
A squad is made up of 10 privates and 5 privates first class. (a) In how many ways can a detail of 4 privates and 2 privates first class be formed?

Gr 12 Data
Sarah tosses 5 coins, one after the other. a) How many different outcomes are possible? b) Draw a tree diagram to illustrate the different possibilities. c) In how many ways will the first coin turn up heads and the last coin turn up tails? d) In how many ways will the second...

Math
A new born infant usually triples its birth weight by its first birthday.Baby carter weighted 28 pounds on his first birthday. If this were triple his birth weight (b), which equation below could be used to determine his birth weight? (1) b/3=28 No sure how to this one 3÷28=b...

Chemistry 212
The isotope californium-252 has a half life of 162 days. How many days would it take for 61.7% of the original material to decay? I am using the equation t= (ln(nt/no))/ k and I am first solving for K using: k=(.693/t1/2) the suppose answer can range from (10.7-10.9) but Im ...

Literature
Since the time of the play's first performance, the props and set have been designed to be minimal so that________. the play can be performed in outdoor as well as indoor locations the play becomes more appealing for younger audiences ***my answer actors must think of new ways...

Science
Hey! so, I was just wondering if someone could check a few of my answers. 1. during what phase of the moon can a lunar eclipse occur? A. New moon B. First Quarter C. Waxing gibbous D. Full moon* 2. Which of the following is the smallest possible amount of time that can pass ...

math
Rs 155 is divided into 4 parts in such a way that if the first part is diminished by 4,second be increased by 5,the third be divided by 2 and fourth be multiplied by 3,then find the first part? ans(40)

Math
Which of these is an irrational number. A. √150 B. √441 C. √200 D. √250 Ok I worked it out like this √150= 12.24 (12) √441= 21.07 (21) √200= 14.14 (14) √250= 15.81 (16) Ok I can't figure this out. What exactly does rational and irrational mean I'm getting so ...

Math
You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes ** experimental; the result is found by repeating an experiment ...

Math
The box-and-whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School. Two box and whisker plots are shown above a number line. The number line is scaled from 2 to 38 by twos. The first plot ...

graphing help?
Graph ​ g(t)=4sin(3t)+2 ​. Use 3.14 for π . Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point. How would I graph this? I have plot the points on ...

math
MALU EARNS rs5 MORE IN A WEEK THAN IN PRECEEDING WEEK.HE EARNED rs135 IN FIRST WEEK.HOW MUCH WILL HE EARN AT THE END OF 39th WEEK??

Calculus
Use cylindrical shells to find the volume formed by rotating the region in the first quadrant enclosed by: y=1.2-1.4|x-12| and y=0 about the y-axis

Statistics
A student s to answer 10 out of 13 questions in an exam. How many choices he has if he must answer at least 3 of the first 5 questions.

Statistics
A student is to answer 10 out of 13 questions in an exam. how many choices he has if he must answer at least 3 of the first

Statistics
In how many different ways can a chemistry book, a calculus book, a history book and a dictionary be arranged on a shelf so that the chemistry book or the history book appears first?

Calculus
Use cylindrical shells to find the volume formed by rotating the region in the first quadrant enclosed by: y=1.2-1.4|x-12| and y=0 about the y-axis

math
Anna has $15 more than Lala does. If I gave Lala $60, she will have three times as much as Anna. Find how much Lala has at the first place?

Active math's
There are the consecutive number. First and third number is 72 .find the middle number.

Math
Gina was training for a marathon. On the first day of her training, she ran 10 yards. On the second day of her training, she ran 10,000 inches. On the last day of her training, she ran 1000 feet. How much did Gina run in all

Algebra 2 check my last answer?!
A supermarket finds that the number of boxes of a new cereal sold increases each week. In the first week, only 16 boxes of the cereal were sold. In the next week, 33 boxes of the cereal were sold and in the third week 50 boxes of the cereal were sold. The number of boxes of ...

Math
Joe spent .55 of his money in one shop and 2/5 of it in another, he then had €6 left, how much had he at first?

math
The first three terms of a geometric sequence are as follows. 32 , 16 , 8 Find the next two terms of this sequence.

maths
There were some boys and girls in the school hall at first. 40% of the boys and 10% of the girls left the school hall. As a result, 3/4 of the pupils remained in the school hall.There were 12 more girls than boys who remained in the school hall. how many boys were there at ...

I don't get this math!
Sequences that increase at increasing rates are sometimes described as “growing exponentially”. However, this is not always a correct use of the word. For example, both quadratic (constant second difference) and exponential growth share this property. Suppose that a ...

VSU
Am influenza epidemic hits. large city and spreads at the rate of 12e^0.2t new cases per day, where t is the number of days since the epidemic began. The epidemic began 4 cases. find the number of cases during the first 30 days.

Beethoven First sonata Op 2 no 1
I'm have some trouble with the rhythm at the .part marked con espressione. It starts with the grace note going to D and B ,any tips please.

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