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Science
If 50% if reactant is converted to product in first order in 25 minutes.how much of it would react in 100 minutes?

Calc
Hello! Really can't wrap my head around this so please help! Consider the function: f(x) = x^2+(1000-x)^2 First find out where it is increasing, and then use this fact to determine which number is larger: a) 1000^2 or b) 998^2 + 2^2 I found that the function increases at x=500...

math
5. In a geometric sequence, the sum of the first five terms is 44 and the sum of the next five terms is -11/8. Find the common ratio and first term of the series.

English
In 25-50 words, describe what a thesis statement does. Once you have narrowed the topic of your essay, it is important to state your topic clearly in one sentence. Like the topic sentence in the paragraph, the thesis statement introduces what the essay is about and arouses the...

French
I need help with the correct translations in French (please check to make sure if I used past tense right or if it's not, suggest the appropriate change. 1. During the summer, I traveled to Baltimore, Maryland. - Pendant l'été , je suis allé à Baltimore , Maryland. 2. When...

ALGEBRA
You have just landed your first summer job and your boss has told you that you can choose from one of 3 pay structures for the first week (7 days) that you work there. And after the first week, your pay will be frozen at the final rate for the remainder of the summer. #1pay ...

social studies (check my answers)
What was the significance of the battle at fort necessity? British defeated the French and went on to claim Fort Duquesne The battle ended the French and Indian war The battle ended in a stalemate but with heavy losses on both sides It was one of the first battles of the ...

math help
A salesman has to choose between two schemes of remuneration.The first scheme has a fixed salary of rs 3700 and a commission of 2% on sales above rs 50000. The second scheme has no salary but offer commission only. The commission starting from 3% of sales for the first rs ...

ALGEBRA
You have just landed your first summer job and your boss has told you that you can choose from one of 3 pay structures for the first week (7 days) that you work there. And after the first week, your pay will be frozen at the final rate for the remainder of the summer. Option 1...

A
You have just landed your first summer job and your boss has told you that you can choose from one of 3 pay structures for the first week (7 days) that you work there. And after the first week, your pay will be frozen at the final rate for the remainder of the summer. • ...

Math
A student has a savings account earning 6% simple interest. She must pay $1650 for first-semester tuition by September 1 and $1650 for second-semester tuition by January 1. How much must she earn in the summer (by September 1) in order to pay the first-semester bill on time ...

math help me out
A salesman has to choose between two schemes of remuneration.The first scheme has a fixed salary of rs 3700 and a commission of 2% on sales above rs 50000. The second scheme has no salary but offer commission only. The commission starting from 3% of sales for the first rs ...

Math
Is the value of the second 5 in 450,852,137 one-tenth the value of the first 5 ? Explain

Microsoft exel
4. You're working in a table that has three columns and five rows. Since the first row will be a header row, you want it to span all three columns. What formatting feature should you use? A. Connect cells B. Autofit cells C. Combine cells D. Merge cells

math
The second and sixth terms of an arithmetic sequence is 2:5 and their sum is 28. Find the sum of the first 10th term.

math
A stereo is bought for $1500 and sold 4 years later for $800. a) Find the depreciation equation. b) Assuming the depreciation is linear, find the value of the stereo after the first five years of ownership.

biomechanics
The sweet spot on a baseball bat is 120 cm from the axis of rotation during the swing of the bat. (This seems long at first, since the bat is shorter than 120 cm. But the bat’s axis of rotation is outside of the bat and passes through the body of the batter.) If the sweet ...

math
a man places $700 in an account that accrues interest continuously. Assuming no additional deposit and no withdrawals, how much will be in the account after 10 years if the interest is a constant 7.5% for the first six years and a constant 8.25% for the last 4 years? my ...

Math
Dear kind-hearted tutor, Can you check my solution on this question? Given f' (x) = {2x - 1, x≤1; x^2, x>1, find f’ (1) if exist. Since it asks to find f’ (1). I choose the first derivative because it satisfies the condition for 1. 2 x – 1 = 2 (1) – 1 = 1 What...

Ap series
Sum of first six term of an ap is 46 ratio of its 10th term to that of 30th term is 1:3. Find its 13th term

maths
A man travels for 5 hr 15 min if he covers the first half of the journey at 60 kmph and the rest at 45 kmph. find the total distance travelled by him.

Finance, Math
You take a short position in one European put option contract, with strike price 100 and maturity six months, on a stock that is trading at 100. The annual volatility of the stock is constant and equal to 25%. The dividend rate is zero. The annual (continuously compounded) ...

Finance, Math
You take a short position in one European put option contract, with strike price 100 and maturity six months, on a stock that is trading at 100. The annual volatility of the stock is constant and equal to 25%. The dividend rate is zero. The annual (continuously compounded) ...

FINANCE
You take a short position in one European put option contract, with strike price 100 and maturity six months, on a stock that is trading at 100 . The annual volatility of the stock is constant and equal to 25 % . The dividend rate is zero. The annual (continuously compounded) ...

Psychology
With respect to the theory of cognitive dissonance, people can hold contradictory ideas in their minds. If you become aware of the dissonance between two ideas, you could pursue which of the following strategies to reduce the dissonance? B. You can modify your views of the two...

Calculus
First make a substitution and then use integration by parts to evaluate. The integral of (x)(ln(x+3))dx What do you substitute first?

GEN MATH
Solve the ff. problems below. Show your complete solution: 1.) A number added to four times its reciprocal is equal to the sum of 3/2 and the quotient of two or more than three times the same number and four. 2.) A car travelled the first 240 kilometers at a certain speed and ...

Business
Your beachside inn will be ready to open next spring. To get in on the summer tourist trade, it will be necessary to… A- offer bargain rates at first B- give it an unforgettable name C- advertise heavily and local newspapers D- establish a strong web presence The answer is ...

Math
Find the sum of first n terms and the sum of first 5 terms of the geometric series

history
In which country did the first newspaper in the world start?

statitics
you are going to play two games the probability you win the first game is 0.60 if you win the first game the probability you will win the second game is 0.75 if you lose the first game the probability you win the second game is 0.55. what is the probability you win exactly one...

Math
two pyramids are similar with a ratio of surface areas of 25:64, find the volume of the second pyramid given that the first has a volume of 250 m

English
Underline the subject and verb. Does the verb agree with the subject? In my garden, the first flowers has bloomed. subject:flowers verb: has The verb should read: have

Science
When did the first human exist? And when did they start populating the earth?

math
Divide 534 into three parts such that the second part will be 32 less than twice the first ,and the third will be 18 more than the first.

Physics
Considering a mass-spring system aligned horizontally moving at a velocity v. a) How will the velocity of the mass change if amplitude is doubled. b) How will the velocity of the mass change if the spring constant is quartered? I know the answer to the first one is that it ...

Java
Need help with this it my first time and not get it can someone please help here. Which class contains the function pow? Write the statement to use the method pow to compute and output 6.5 3.5 .

Maths
Please Help Differentiate Sin sqrt x from first principles

math: permutations
Hi, I need your help. I just cant figure out how to solve this problem. Question: There are two rows of chairs. The first row has two chairs and the second row has four chairs. In how many ways can six people be seated if a couple from the group must sit in the same row? *** ...

math
a bullet is fired horizontally with a velocity of 200m/s.if the acceleration due to gravity is 10m/s-2, un first second through which height it will move.

Math
Agnes had 4 times as many blue beads as yellow beads. For every 5 beads she used to make a necklace, she used 3 yellow beads. She completed the necklace after she had used up all the yellow beads. If she had 35 blue beads left, how many yellow beads did she have at first?

physics
if an 80 meter high object placed 2 meter from a convex lens forms an image whose distance from the object is 2 meter; show with the aid of a diagram with appropriate scale the height of the image formed and confirm your answer using mirror law formula?

Busines
You've arrived at the Pecan Shellers conference—your first networking opportunity. Naturally, you're feeling nervous, but to avoid seeming insecure or uncertain, you've decided to F. square your shoulders before entering the room. G. hold an empowered image of yourself in ...

Small Business Management
You've arrived at the Pecan Shellers conference—your first networking opportunity. Naturally, you're feeling nervous, but to avoid seeming insecure or uncertain, you've decided to A. square your shoulders before entering the room. B. hold an empowered image of yourself in ...

mathematics
the 10th term of an arithmetic sequence is equal to the sum of 40 and 5th term.If the 15th term is 127 what is its common difference?what is its first term?what is the sum of the first 30 terms.

Maths
The sum of the first and third terms of a G.P.is 7/3 and the sum of the second and fourth term is 7/4.Fin the first and the common difference

probability
In the state of Georgia, telephone numbers consists of 10 digits, including the area code. One of these area codes is 770. The first digit following the area code cannot be 1 or 0. Find the number of possibilities for telephone numbers in area code 770. How many different ...

stats
The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 241 hours and a standard deviation of 12 hours. Find the first quartile, Q1.

world history
What revolution first popularized democratic ideas and enabled them to gain a foothold in European society?

general math
The base jeepney fare is PHP 8.00 for the first four kilometers and an additional PHP 1.50 per kilometers for the succeeding kilometers, express the fare for x kilometers as a function of x. please help me and kindly put the solution too. thank you :)

math
it takes raiz 30 minute to mark a peper,razi only takes 25 minutes to mark a peper,if they both start marking paper at 11;00am what is the first time they will finish marking paper at same time?

Chemistry
For two questions below, first write and balance the equation for the chemical reaction.  Please, also review the material in Chapter 8, if you will feel you might need it in order to answer the questions.  Next, please answer the following questions: (a) What substance is...

physics
An infinitely-long wire with resistivity 2.0*10^-8 ohm*m initially has 1.5 A of "conduction" current flowing through it. When the emf connected to the wire is turned off, this current stops in time of .6ns. Estimate the amount of displacement current created in the wire as the...

Physics
Ok so this is just a small understanding problem, I do not want you to actually help me solve the problem, here it goes: A cylinder with mass 3kg slides on ice with its base surface at 5m/s and collides with an identical but stationary cylinder. The collision is elastic. After...

Maths
Susan reads 1/6 hour on first day,1/4 hour on second day, and 1/3 hour on the third day. If this pattern continoues, how long will she read on the fifth day?

Science
1.Two stones are dropped from the top of a tower at an interval of 3 seconds.the relative velocity of the first Stone with respect to the stone at any instant during their fall is?? 2.if density, acceleration and force are taken as basic quantities, then time period has ...

physics
A rope of mass M and length L is being rotated about one end in a gravity free space. A pulse is being created at one of the ends. The angle through which rope will be rotated in the time when pulse reaches the opposite end of rope for first time and for the angular velocity ...

math
The region in the first quadrant bounded by the 𝑦-axis and the curve 𝑥 = 2𝑦2 − 𝑦3 (graph please) is revolved about the 𝑥-axis. Find the volume?

chemistry
Calculate the grams or milliliters of solute needed to prepare the following solutions. 1.)75. g of a 7.0 % (m/m) KCl solution 2.) 1250 mL of a 8.0 % (m/v) NH4Cl solution 3.) 270. mL of a 15.0 % (v/v) acetic acid solution I really just need to know how to work the first ...

Math
Teo cars are 635 km apart.they start at the sane time and drive toward each other .The first car travels at a rate of 70 kph and the second car travels 57kph .In how many hours will the two hours meet??

maths
If two non parallel lines are perpendicular to other two non parallel lines prove that acute angel between first two non parallel lines is equal to acute angle between other two non parallel lines

Java
Need help asap. You are given a list of students' names and their test scores. Design an algorithm that does the following: a. Calculates the average test scores. b. Determines and print the names of all the students whose test score is below the average test score. c. ...

math
Thewhat is the difference between the mean and median of the first four prime numbers that are more than 4? The mean=9 and the median =11.so the ans should be -2.but in the answer sheet the ans is 0..how?

math
What is the difference between the mean and median of the first four prime numbers that are more than 4?

math
two groups of students went into the shop. the first group bought four hot dogs and six juices and paid $71. The second group bought three hot dogs and seven juices and paid $67. What were the prices for these items?

algebra
1. The geometric mean between the first two terms in a geometric sequence is 32. If the third term is 4, find the first term. 2. Insert a geometric mean between k and 1/k. 3. If 2 and 3 are two geometric means between m and n, fond the values of m and n. 4. Three positive ...

Maths
On a certain examination the student must answer 8 out of 12 questions including exactly 5 of the first six. In how many ways may he write the examination.?

Maths
Mr Sanderson makes some cookies for a festival day. She gave 1/4 of the cookies to her sister and 1/3 of the remainder to a neighbour. If she had 120 cookies left, how many cookies did she make in the beginning? Linda spent 1/4 of her money on books, 1/3 on food and 1/5 of the...

physics
A rope of mass M and length L is being rotated about one end in a gravity free space. A pulse is being created at one of the ends. The angle through which rope will be rotated in the time when pulse reaches the opposite end of rope for first time and for the angular velocity ...

physics
33. A rope of mass M and length L is being rotated about one end in a gravity free space. A pulse is being created at one of the ends. The angle through which rope will be rotated in the time when pulse reaches the opposite end of rope for first time and for the angular ...

Socials Studies
Why were the rules of the bison hunt so strict? Why might some punishments involve destruction of property? The rules were so strict because it was dangerous and can cause death and serious injuries. Am I right? That's my answer for the first question and I need help on the ...

MATH
true or false: log (x-y) = log (x) - log(y) I don't know the the first part, but looking at the second part, wouldn't log (x) - log (y) = log x/y so based on that the first part is false?

physics
a heavy object is dropped from the top of a 25 m tall building and it reaches the ground in 2.26 seconds determine the acceleration due to gravity how far did the object fall during the first second how far did the object fall during the 2nd second

Math
On Feb. 27th, 2010, an earthquake of magnitude 8.8 occurred off the coast of Chile lasting up to 3 minutes. Five months later, a 2nd earthquake occurred with magnitude of 5.3. How much more intense was the first earthquake compared to the 2nd earthquake?

health communication
For your communication intervention, you are trying to get young mothers in a developing country to use more nutritious complementary food for their infants. You find that their mothers-in-law make most of the decisions, so you try to convince them first that this a good idea ...

physics
A hiker begins a trip by first walking 25.0 km 45.0° south of east from her base camp.On the second day she walks 40.0 km in a direction 60.0° north of east, at which point she discovers a forest ranger’s tower.Find the magnitude of the displacement from base camp.

Math
laura spent 20 percent of her money on a dress. she spent 2/5 of the remainder on a book. she had $72 left. how much money did she have at first?

Maths
The numbers p,10 and q are 3 consecutive terms of an arithmetic progression .the numbers p,6 and q are 3 consecutive terms of a geometric progression .by first forming two equations in p and q show that p^2-20p+36=0 Hence find the values of p and q for which the geometric ...

Calculate y' and y'' at the point (1,1)
Calculate y' and y'' at the point (1,1) on the curve 5 xy^2+9 y-14 = 0 I got the first part (-5/19) but I can't get the answer for the second

Math
Calculate y' and y'' at the point (1,1) on the curve 5 xy^2+9 y-14 = 0 I got the first part (-5/19) but I can't get the answer for the second

math
A theater group made appearances in two cities. The hotel charge before tax in the second city was $500 lower than in the first. The tax in the first city was 6%, and the tax in the second city was 4.5% The total hotel tax paid for the two cities was $292.50 . How much was the...

math
Two mechanics worked on a car. The first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they charged a total of $2025 . What was the rate charged per hour by each mechanic if the sum of the two rates was $205 per hour

physics
a 10k race was held the first place finisher completed the 10km run in 29.5 minutes what was the average speed in miles per hour. In another race the person is given a head start and if they beat the first place finisher at the end the win $2,500 the chosen winner was given a ...

English
1. All of a sudden a funny thing happened. 2. All of sudden a funny thing happened. ---------------------- Can we omit 'a' before 'sudden'? 3. detour (Do we stress the first syllable? Can we stress the second syllable?) 4. I have little money. 5. I have less money than Tom. 6...

math
If a lab technician has a salary of 22000 her first year and is due to get a 500 raise each year, then what will her salary be in her seventh year? What is the total salary for 7 years of work for the lab technician?

Math
At a party one hundred and twenty people danced. The girls all started dancing one after the other. Tina was first girl who danced with seven men,Reena the second girl who danced with eight men, Sheela the third girl who danced with nine and so on up to Raveena who danced with...

Chemistry
Which of the following atoms would have the highest first ionization energy? A. Li B. Be C. Na D. Mg

Social studies
Suppose,you got opportunity to meet with a Gorkhali solider on the occasion of the hundred years of the first world war.on the basis of your talking with him regarding places where Gorkhali soldier fought,lessons that they learnt and it's effects in Nepal,prepare a report on ...

Maths
If sum of three consecutive term of A.P. is 48 and product of first and third is 252 then find d?

Maths
If sum of three consecutive term of A.P. is 48 and product of first and third is 252 then find d?

Physics
A guitar string is 108 cm long and has a mass of 2.90 g. From the bridge to the support post (L) is 70 cm, and the string is under a tension of 470 N. What is the frequency of the first overtone? Only 1 try left please help.

math
A family has two cars. The first car has a fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of 25 miles per gallon of gas. During one particular week, the two cars went a combined total of 1275 miles, for a total gas consumption of 45 gallons...

General Mathematics
A jeepney ride costs P8.00 for the first 4 km and each additional integer km adds P 1.50 to the fare. Use a piecewise function to represent the jeepney fare in term of the distance d in km.

English
1. Why did you upload my pictures? I want you to delete them now. ----------------------- Q1: Where do we give the primary stress on the verb 'upload,' on the first syllable or on the second syllable? Q2: Can we substitute 'erase' for 'delete'? What other verbs can we use?

Math
Consider the series 1+(2+3)+(4+5+6)+(7+8+9+10)+(11+12+13+14+​15)+.... (a) find an expression for the ith term in the rth bracket. (b) Given that 39×79 is the sum of all the numbers in the first k bracket in the series, find the value of K.

Math
The fourth term of a geometric series is 30; the ninth term is 960. Determine the sum of the first nine terms. How do I find t1 and r?

chemistry
How many grams of dipotassium succinate trihydrate (K2C4H4O4·3H2O, MW = 248.32 g/mol) must be added to 790.0 mL of a 0.0522 M succinic acid solution to produce a pH of 5.872? Succinic acid has pKa values of 4.207 (pKa1) and 5.636 (pKa2). is the pH of the current solution ...

MATH HELP
A bus leaves a station at 10am and averages 60 mph. Another bus, traveling at 75 mph, leaves the same station 30 mins later following the same route. What time does the second bus catch up with the first bus? I don't know how to work this out at all!

Math
2 cars traveled to a place at 60 km/hr and 70 km/hr respectively if the first car takes 1and 1/2 hour more then the 2nd car for the same journey what will be the length of the journey

arithmetic sequence
give the sequence of 5 term if the first term is 8 and the last term is 100

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