Questions Asked on
December 1, 2015

Chemistry
A buffer solution contains 0.052 M HC2H3O2 and 0.025 M NaC2H3O2. The pH of this solution is _____. Ka for HC2H3O2 is 1.8x105.
asked by Morgan 
physics
A friend in another city tells you that she has two organ pipes of different lengths, one open at both ends, the other open at one end only. In addition, she has determined that the beat frequency caused by the secondlowest frequency of each pipe is equal
asked by eva 
Calculus 1
The acceleration function (in m/s^2) and the initial velocity are given for a particle moving along a line. a(t)=t+4, v(0)=4, 0 ≤ t ≤ 11 (a) Find the velocity at time t. (b) Find the distance traveled during the give time interval.
asked by TayB 
math
The scale model of a building is 5.4 feet tall. A)If the original building is 810 meters tall, what was the scale used to make the model? B)If the model is made out of tiny bricks each measuring 0.4 inch in height, how many bricks tall is the model? THANK
asked by kimie 
math
Zach is planning to invest up to $50,000 in corporate and municipal bonds. The lest he will invest in corporate bonds is $6000 and he does not want to invest more than $27,000 in corporate bonds. He also does not want to invest more than $34,650 in
asked by random 
physics
to what height should a cylindrical vessel of diameter d be filled with a liquid so that due to force on the verticle surface of the vessel be equal to the force on the bottom
asked by ash 
Math
The tournament starts with 64 teams playing 32 games and continue until there is only one team left. Come up with a formula for how many teams are left after x rounds. Ok so far I have y= 64x32 However, I know that won't work. I'm just not really sure
asked by Melanie 
math
A game room has a floor that is 120 feet by 75 feet. A scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet. What are the dimensions of the scale drawing? THANK YOU!
asked by Tim 
geometry
A scale for a scale drawing is 10 cm:1 mm. Which is larger, the actual object or the scale drawing? Show work. I understand that the answer is 100 times larger since 10mm equals 1cm. BUT how do I show the work of how this is solved? THANK YOU!
asked by Tim 
Binalbagan, math
Two numbers are in a ratio 3:5. If the difference between the two number is 24 find the number
asked by Linalyn 
math
A: FUNCTION Q1. (a) The function C (x) = 25x + 80,000 express the total cost C (x) (in K£) of manufacturing x units of a product. If the maximum number of units which can be produced equals 20,000, state the restricted domain and range for this function.
asked by kevin 
Hinigaran, math
Four numbers are in the ratio 1:4:5:8. If the largest is 144, what is the sum of the four numbers?
asked by Andy 
algebra
in a class of 30 students , there are 22 students who study chemistry but not physics, 4 who study physics but not chemistry and who study neighter chemistry nor physics. how many students in the class study physics
asked by judith 
English
1. He caught a big fish, but he put it back. 2. He caught a big fish and he put it back. 3. He caught a big fish and put it back. ============ Can we use both 'and' and 'but'? Which one is common?
asked by rfvv 
English
1. What day is July 22?  It is Sunday. 2. What day is on July 22?  It is Sunday. ============== Which one is right? 3. On July 22, Sunday, what did they do? 4. On Sunday, July 22, what did they do? 5. On July 22, on Sunday, what did they do? 6. On
asked by rfvv 
English
1. If you answer the question right, you will get a point card. 2. If your answer is right, I will give you a point card. 3. If you say the correct answer, you will receive a point card. 4. If you respond to the question right, you will get a point card.
asked by rfvv 
east salisbury
Emily and Hanna are painting their bedroom wall. each 1/2 of paint covers 1/6 of the wall how many gallons will they need to cover the whole wall
asked by malaya 
Rs argrwal
Bd is öne of the diagonal of quad. Abcd.if al  bd and cm bd ,show that ar(quad.abcd)=1/2xbdx(al+cm)
asked by Raj 
English
I don't like pears. 1. Neither do I. 2. Nor do I. 3. Me, neither. 4. I don't like pears, either. I like pears. 5. So do I. 6. Me, too. 7. I like pears, too. ========== Are the answers all grammatical? Can you see any awkward answers?
asked by rfvv 
English
1.I'm sorry to hear that. 2. That's too bad. 3. What a pity! 4. What a shame! 5. That's a pity. 6. That's a shame. ============== Are they all the same in meaning? Which ones are commonly used?
asked by rfvv 
Mathematics
A train leaves station x and travels east at 30 kph. Two hours later,another train leaves the same station and travels in the same direction on a parallel track at 45kph. At what point will the faster train overtake the slower train?
asked by Shia 
Economics
Given the following TR and TC function of a firm: _ 0.9 10 5 3 1 22 0.5 2 3 2 TR Q Q and TC Q Q Q a) Determine the level of P and Q maximize profit and b) Compute equilibrium profit or loss and determine the decision of the firm.
asked by Maru 
Economics
Suppose demand and supply functions are given by: 2 1 4 1 2 1 7 x s x x d x Q P and Q P a. Determine equilibrium P and Q in this market b. Use graph to show market equilibrium
asked by Maru 
math
if tanA=root21, prove that (secA.sinA tan squareAcosecA) =(12¡Ì5)/2
asked by aanya 
aband public school
the side of square whose parimeter is 20m
asked by priya 
Math
Kala made $20,000 in taxable income last year. Suppose the income tax rate is 15% for the first $8500 plus 19% for the amount over $8500 . How much must Kala pay in income tax for last year?
asked by Brenna Holdcraft 
Chemistry
50 Ltr. Of a certain liquid is confined in a piston system at the extenal pressure 100 atm this pressure suddenly released and liquid is expanded against a contant atm pressure , vol. Of liquid increases by 1 Ltr and the final pressure of the liquid is 10
asked by Sam 
PHYSICS
Two blocks of masses m1 = 4.5kg and m2 = 6.5kg resting on a frictionless area connected by light inextensible chord as shown. A horizontal force F of 33.0 N directed to the right is applied to m1 as shown. Find (A) acceleration and (B) tension of the
asked by Camz 
early childhood literacy
Mr Howard is busy preparing his puppet area the best way for him to store puppets is: A. in an airtigh container B. in a shoe box C. in the puppet teather d. on pegs inside teacher only cabinet. my answer is A.
asked by siulanis 
Himamaylan, math
Solve for the value of N 1/3:N=1/2:40/N
asked by Rean 
Algebra
Simplify each expression below. Assume that the denominator in part (b) is not equal to zero. a. (x^3)(x^−2) b. 4^−1 c. (4x^2)^3 d. Y^5/Y^2
asked by Adelaide 
Math
The distance from Jason's house to school is 0.5 kilometer. What is the distance in meters?
asked by Anonymous 
isah
the sixth term of arithmetical progression is half of its twelfth term.the first term is equal to
asked by abdulraheed 
Social Studies
How did Muslim Turks influence Turkey's development?
asked by Help? 
Algebra
a farmer fences off a small.rectangular plot of land thay is 60 feet by 100 feet. within that area, a garden is planted and surrounded by a walkway of uniform width. how wide is the walkway if the area of the planted area is one half of the area of the
asked by Thomas 
English
1. How about going to see a movie? 2. Why don't we go to see a movie? 3. Why not go to see a movie? 4. Shall we go to see a movie? 5. What do you say to seeing a movie? 6. Let's go to see a movie. 7. Why don't you go to see a movie? ================ Are
asked by rfvv 
English
1. Each of the dogs has its own house. 2. Each dog has its own house. 3. Each of dogs has its own house. 4. Each of my dogs has its own house. 5. Each of these dogs has its own house. ========================== Are they all grammatical? Is #3 OK?
asked by rfvv 
physics
A 65.5 kg high jumper leaves the ground with a vertical velocity of 8.1 m/s. How high can he jump? The acceleration of gravity is 9.8 m/s2 .
asked by BROOKE 
Science
A car is traveling at 65 km/hr. The brakes are applied and the car stops in 3 seconds. What is the car's acceleration?
asked by Lana 
English
Thank you very much for your help.... ................................ 1. Why don't we go to the movies this evening? 2. Why don't we go to see a movie this evening? 3. Why don't we go to a movie this evening? 4. Why don't we go to see the movie this
asked by rfvv 
Comm Tech
1. What does it mean to calculate frequencies within a dataset? A.)to count the number of times a dataset is used by a student B.)to calculate the product of two variables to make a third variable C.)to count the number of cases that fall into different
asked by YRN DJ 
Comm Tech
Name Age Gender Eye Color Hair C. 1.)Bob 40 M Brown Blonde 3.)Cathy 37 F Brown Blonde 4.)Samantha 51 F Brown Brown 5.)Robin 46 F Brown Black 3.)What is the frequency of brownhaired people in the sample ? A.)3 & 4 B.)2 C.)4 D.)3 My mom says it's "A" but i
asked by YRN DJ 
batac national high school
A mother is three times as old as her son. Eight years ago, she was 4 more than five times the age of her son. How old is the mother now?
asked by kathleen 
Science
Someone help I'm having trouble answer this question. Explain what maria and craters are and how they formed.
asked by Octavia 
Himamaylan, math
Please help solve the problem 1/3:N=1/2:40/N
asked by Rean 
maths
find 2 numbers whose arithmetic mean exceeds their geometric mean by 2 .and whose harmonic mean is 1/5 of the larger number.....
asked by xxxx 
Computer Science
i Need help, using loops, visual studio 2013. write a program using loops that will calculate the following, how much would $24 deposited in a bank in 1626, have been worth at the end of this year if it had received an interest rate of 6% compounded
asked by Jane 
Math
chris wants to buy a cell phone that costs $215.00. his parents say chris must raise 35% of the money himself. how much money must chris raise? a.$705.00 b.$75.25 c.$139.75 d.$215.00 ???
asked by Anonomys 
Math
3.)Find the diameter of a circle with a circumference of 50 mm. Round your answer to the nearest tenth. A.)16.0 mm B.)26.4 mm C.)8.4 mm d.) 33.5 mm 4.)Find the area of the circle with the given radius or diameter. Round your answer to the nearest tenth.
asked by YRN DJ 
History
1. Which of the following did George Washington do during his presidency? established a cabinet of advisers** limited himself to one term in office offered military support in foreign wars served ties with Great Britain 2. What precedent did George
asked by Mason 
Chemistry
Calculate the hydronium and hydroxide concentration of a solution made by mixing 100 mL 0.020 mol/L NaOH and 25.0 mL of 0.040 mol/L HCl. I'm having trouble knowing where to start with this question.
asked by Hal 
Algebra 2
A radioactive substance decays at a rate of y = ae^0.1483t, where t in in hours. Find the halflife of the substance. How do I solve this problem if I am only given the constant.
asked by Sammantha Avants 
Algebra 1 check answers
If you were solving a system of equations and you came to a statement like 1 = 3, what do you know about the solution to the system? The solution is (1, 3). The solution is x = 1 and y = 3. There is no solution. There are infinitely many solutions. I think
asked by Anon 
HELP!! PLEASE CHEM LAB
When doing a titration, for example acid base, how do you know how much base to measure out and how much analyte to pour in the reaction flask?
asked by che 
Math
solve the proportion using cross products. 20 miles/60 hours=16 miles/h hours? a.20 b.40 c.48 d.64 ??? thanks in advance:) please help!!!
asked by Anonomys 
financial mgmt
Suppose a project has a $2,000,000 net investment and net cash flows (NCFs) of $700,000 annually for 7 years. If the investor's required rate of return is 10%, what is the NPV of this project?
asked by alex 
Art
7. Which of the following pairs are art movements? A. Impressionism, Victorian B. Renniasance, Expressionism C. Renoir, Classicism D. Art Deco, Cubism My answer is B and you please check @Ms.Sue
asked by Anastasia 
algebra
Triangle ABC is reflected over the xaxis. Triangle ABC has points A (10, 2), B (9, 5), and C (6, 4). What is the B' coordinate?
asked by jnjlk 
World civilization
Which period of Egyptian history was known for building pyramids
asked by Theresa 
math
A paleontologist finds an unidentified bone. In the laboratory, she finds that the Carbon14 found in the bone is ⅓ of that found in living bone tissue. How old is the bone? Round to the nearest whole number.
asked by Sammantha Avants 
Algebra 1 A few questions, please help
**
asked by basketball&batman 
satistiks
The weights of male nurses in a hospital are known to be normally distributed with mean ƒÝ = 72 kg and standard deviation ƒã = 7.5 kg. The hospital has a lift (elevator) with a maximum recommended load of 450 kg. Six male nurses enter the lift.
asked by nide 
Math
The diameter of an electric cable is normally distributed, with a mean of 0.6 inch and a standard deviation of 0.03 inch. What is the probability that the diameter will exceed 0.63 inch? (You may need to use the standard normal distribution table. Round
asked by Melissa 
Math
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 16. The material is considered defective if the breaking strength is less than 156.2 pounds. What is the probability that a single,
asked by Melissa 
Math
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 60 people. (You may need to use the standard normal distribution table. Round your answers to the nearest
asked by Melissa 
Physics
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H = 32.0 m above sea level, directed at an angle theta = 46.9° above the horizontal, and with a speed v = 29.6 m/s. Assuming
asked by Kevin 
Physics
The launching speed of a certain projectile is 6.8 times the speed it has at its maximum height. Calculate the elevation angle at launching.
asked by Kevin 
T. P. C
The radius of a wheel is 50 cm. The number of revolutions it will make is going 550 m is.
asked by Amar 
Physics
A person who is 1.1 m tall throws a ball with a speed of 5.2 m/s at an angle of 56 degrees above the horizontal. What are the x and y components of the velocity (in m/s) of the ball the instant before it strikes the ground? The acceleration due to gravity
asked by Kevin 
physics
A projectile is fired at 30.0° above the horizontal. Its initial speed is equal to 172.5 m/s. Assume that the freefall acceleration is constant throughout and that the effects of the air can be ignored. What is the maximum height reached by the
asked by Kevin 
maths
a rectangular tank 30cm×20cm×12cm contains water to a depth of 6 cm.A metal cube of side 10 cm is placed in the tank with one face resting on the bottom of the tank.find the volume of the water in the litre must be poured in the tank so that the metal
asked by ambuj 
maths
3*5*⅝?
asked by Anonymous 
math
Walter takes 7/10 of an hour to mow 2/5 of an acre of lawn. At this rate, how many acres will he mow in an hour?
asked by sm 
Algebra 1
1. For the data in the table does y vary directly with x? If it does write an equation for the direct variation. xy 828 1656 2070 a. yes;y=5x b. yes;y=x+20 c. yes;y=3.5x** d. no; y doesn't vary directly with x 2. For the data in the table does y vary
asked by basketball&batman 
Chemistry
The population ratio between two energy levels separated by 1.4 ✕ 10−22 J is 0.69. What is the temperature of the system?
asked by Anonymous 
Chemistry
How many grams of water are needed to make at least 50.0g of C2H2 in this reaction? CaC2 + 2H2O = Ca(OH)2 + C2H2 The numbers inside are suppose to be small but you can't do that on a laptop... Thanks
asked by Jake 
science
If a 5 kg disc is rotated at 5000 rpm how much torque will be produced ??
asked by Sahajanand Jadav 
Math
One pound costs $8.28. What is the total cost of 10 1/3 pounds?
asked by Kate 
Physical Education
What other sport does volleyball most resemble? a. football b. water polo*** c. golf d. surfing
asked by Kaai97 
Physical Education
Which of the following is legal for a volleyball player to do? a. spike the ball*** b. touch the net during play c. hit the ball twice in a row d. cross underneath the net during play
asked by Kaai97 
Math
Using change of variable to solve 2/3x^2x2 +5/3x^2x1=7/3x^2x3
asked by Temmy 
Science
A car is traveling at 65 km/hr. The brakes are applied and the car stops in 3 seconds. How far does it travel? Write down the given, unknown, formula, solution, and the final answer.
asked by Laila 
algebra 2
What are the solutions to the equation 3(x – 4)(x + 5) = 0?
asked by kegen 
Chemistry
Which of the following elements is most likely to form an ion that will then form an ionic bond with an ion of a Group 1A element? Pt I Fr Be
asked by Sara 
Algebra 1 Just one question please :)
You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.015. How confident can you be that your predicted value will be reasonably close to the actual value? Please help
asked by basketball&batman 
Math
I am having trouble figuring out the below problems. 1. 380 dm= m 2. 90.51L= cL 3. 450mg= g Please help me figure out the below
asked by Patrick 
Math
How are you able to compare the below: 45hg And. 4.5kg Please help
asked by Patrick 
algebra
Find the circumference and the area of a circle with diameter 5cm . Use the value 3.14 for π , and do not round your answers. Be sure to include the correct units in your answers.
asked by Anonymous 
algebra
Mia jogs 3 kilometers in 20 minutes. There are about 0.6 miles in a kilometer. What is Mia’s approximate speed in miles per minute?
asked by Anonymous 
PHYSICS
The pressure and volume of an ideal monatomic gas change from A to B to C. From A to B, volume remains 0.400 and pressure rises to 4.00x10^5. From B to C, volume changes from 0.400 to 0.200 while pressure remains the same. There is a curved line between A
asked by Coffee 
Algebra 1
The table shows the number of miles driven over time. TimeDistance 4 184 6 276 8 368 10 460 Express the relationship between distance and time in simplified form as a unit rate. Determine which statement correctly interprets this relationship. a. 184;
asked by basketball&batman 
High School Paliganj
A particle moves in a circle of radius 2cm at a speed given bye V=4t where V is in cm/s and t is in second. Find the tengential acceleration at t=1 second.
asked by Shashi 
Chemistry
The population ratio between two energy levels separated by 1.4 ✕ 10−22 J is 0.69. What is the temperature of the system?
asked by Anonymous 
Chemistry
Which of the following is a monatomic cation? Br NH4+ SO42– Fr+
asked by Sara 
Math
how many times larger is Egypt compared to Wyoming?
asked by Mia 
Chemistry
The ionization energies (kJ/mol) of hydrogen (H), nitrogen (N), sodium (Na), and oxygen (O) are 1,312, 1,402, 1,681, and 1,314, respectively. Which element combination is least likely? OH– NO3– NH4+ NaO–
asked by Sara 
Physics
1) an objects positiontime graph is a straight line with a positive slope. is the velocity of this object positive,negative or zero. negative 2) an objects positiontime graph is a straight line with a negative slope. is the velocity of this object
asked by anonymous 
computer
The field names in a database are also known as A. category or column heading ** B. The name of a row C. Individual cells in a database D. Records Am I right..?
asked by Aria 
Algebra 1 Please help whenever you get the chance
2. What is the slope of the line that passes through the pair of points? (7,2) and (9,6) a. 1 b. 2 c. 1 d. 2 I think it's d 3. What is the slope of the line that passes through the pair of points? (3,4) and (6,9) a. 5/3 b. 5/3 c. 3/5 d. 3/5 i think
asked by basketball&batman 
Physics
The position timegraph for the motion of a certain particle is a smooth curve, like a parabola.At a given instant of time the tangent line to t he positiontime graph has a negative slope. is the instantaneous velocity of the particle at this time
asked by anonymous 
Maths
There are 3.33 litres of part A and 6.67 litres of part B. When they are completely mixed together, they make 10 litres of paint. How much of part B would you need if you are only using one litre of part A
asked by Melody 
History
check my answers??? 1. During Reconstruction, Southern agriculture thrived because it became more diverse and expanded with the diminishing demand for cotton and tobacco. * True* or False 2. Identify the factor which helped limit the economic recovery of
asked by charlie 
Chemistry
If you place 1.26 g of solid silicon in a 6.54 L flask that contains CH3Cl with a pressure of 634 mm Hg at 25°C, what mass of dimethyldichlorosilane, (CH3)2SiCl2(g), can be formed?
asked by Julian 
Algebra 1 Last question, PLEASE HELP!
A college football coach wants to know if the is a correlation between his players' leg strength and the time it takes for them to sprint 40 yards. he sets up the following test and records the data: Every day for a week, he counts how many times each
asked by basketball&batman 
ChemistryPRELABS
In the synthesis of K3[Al(C2O4)3].3H2O, 0.0357 moles of the limiting reagent were used in the reaction. What is the maximum possible yield? And which is the limiting reagent?
asked by Ami 
ART HELP
4. Which of the following elements and principles are NOT shown in this art piece? (A view of Muhlendamm By Johann Friedrich Stock) A. Line and texture B. Proportion in many areas C. Geometric Shape D. Radial balance *** 7. This artist most obviously
asked by Cami 
Social Studies
What effects did the arrival of Europeans have on native Americans? A the arrival had little effect on native Americans. B Conquest and disease brought by Europeans changed the native american way of life forever C Native Americans and newly arrived
asked by Ashley 
Physics
1) can the positiontime graph for the motion of an object be a horizontal line?explain  so its yes? 2) can the positontime graph bea vertical line, explain so its yes
asked by anonymous 
math
Jan and Carlos are comparing decimals. Jan's decimal is 3.104 Carlos's decimal is 0.05 times more than Jan's number. What is Carlos's number?
asked by Howell 
english
what uncle dudley?
asked by misty 
Math
How much is the total amount if an item costs $8.28 pr pound and they buy 13 1/3 pounds?
asked by Kate 
math
Need help...my calculator and I didn't agree! 125+(5×5)+9÷3×8 125+25+9÷3×8 125+25+9÷24 125+25+0.375 150+0.375 150.375
asked by MAC 
Language Arts
Underline the main verb in each sentence. Write present, present participle, past, or past participle to label the main verbs. 1. Randy's class studies world history.  underlines class studies and this is present participle 2. The students are reading
asked by Patrick 
MATH
AT THANKSGIVING DINNER, EMMA'S FAMILY ATE 1/3 OF A PUMPKIN PIE. WHAT FRACTION OF THE PIE WAS LEFT OVER?
asked by JEREMIAH 
Math
Line A passes the points (5,13) and (1,1). Line B runs perpendicular to Line A and passes the points (6,5). Find the equation of each line.
asked by Sarah H 
Language Arts
Underline the verb or verb phrase in each sentence. Then identify the principle part used to form the verb. 1. I write a column for the school newspaper. underline write and this is present 2. Gary waited half an hour for the bus. underline waited and
asked by Patrick 
Algebra
Write an equation in pointslope form for the line through the given point with the given slope (5,2) m=3 a.y+2=3(x5) b.y+2=3x5 c.y2=3(x+5) d.y2=3(x5)
asked by Mary Anne 
SS
What is likely to happen in the political and economic future of Cyprus? Explain. So I know that Cyprus gained its independents in the past and it has many conflicts with the Greeks till today. Does it have anything to do with that?
asked by Girl18 
Math
A Ferris wheel has a radius of 30 feet and travels 3.6 feet every second. How long does it take for the Ferris wheel to complete one revolution?
asked by Jeff 
Math
Factor: 6m  21p
asked by Amy 
Pre Calc
Find cos 2A if tan A = 5/12 and
asked by Joanna 
Social Studies
Why did some Southern states withdraw from the united states in 1860? A They wanted to avoid the Civil War. B They didn't believe in manifest. C They wanted trade freely with great britan. D They feared they would have little say in the government
asked by Ashley 
English
I have to include the following rhetorical appeals but idk if this is ok and i'm stuck on including ethos... Ethos: trustworthiness or credibility Logos: logic, data Pathos: emotion ___________________________________________________ Here's my sentence:
asked by Emma 
St fiaccs
I spent 50 % of my mine then I spent 25% of what was left I have 12 euro left how much did I start with
asked by Geogina 
Organic Chemistry
Which is more polar transmethyl cinnamate or transchalcone?
asked by Bianca 
Physics
A soccer player kicks the ball toward a goal that is 28.0 m in front of him. The ball leaves his foot at a speed of 19.5 m/s and an angle of 30.6° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The
asked by Anonymous 
Social Studies (Help!)
Why did the English want to hide their colony from Spaniards? Please help!!!!
asked by Jerry 
Physics
A 1000Kg car is traveling at 40 m/s. a.) if the car stops in 20 seconds, what is the deceleration rate? b.) what friction force will stop the car in 20 seconds?
asked by Ellen 
Math
Place these in order least to greatest. 3/7, 2/3, 1/4
asked by Adria 
Precalculus
Solve each exponential equation. Give answers as decimals accurate to the thousands place. 1) log(base5)14=2x9 2) log(base7)5=76x 3) (1/3)^(3x+5)=(9)^(8x) 4) 4^(x5)=8^(x+2)
asked by Ubon 
Pre Calc
Solve 2 sin^2 x3 sin x+1 =0, 0 less than or equal to x < 2pi
asked by Joanna 
chemistry
make 100ml of 0.50mol/L CuSO4 by diluting part of the 0.100 mol/L
asked by Anonymous 
Pre Calc
Verify the identity: sin x/tan x + cos x/cot x = sin x + cos x
asked by Anonymous 
measurement
how many years are in 1 millennium?
asked by misty 
science check please
John has a barometer for measuring atmospheric pressure as he climbs Mt. Everest . the higher he get the higher the pressure reading . is this a result he should except ? A : Yes atmospheric pressure and height are related B : No , there is no pressure
asked by kenxie 
math
How much of 1 cup of milk will be used for 8 slices of bread
asked by Desiree 
math
If you drive 280 miles in 4 hours how many miles is it if you use the car for 6 hours and 30 minutes? I am confused on how u do this
asked by gala 
Social Studies
I'm doing a portfolio...and I need to know some heroes who weren't known in the revolutionary war :))
asked by Cami 
Chemistry
A 0.600 m aqueous solution of KBr has a total mass of 69.0 g. What masses of solute and solvent are present?
asked by Troy 
science
If a single gen controls the mutant trait, how will you determine the dominant and the recessive expression of the gene?
asked by Anonymous 
Social Studies
How did the Industrial Revolution affect the poor in the late 1800s?
asked by Ashley 
science
in general, how can you distinguish whether a trait you are studying is inheritable or is the result of environmental effects?
asked by Anonymous 
Math
Lisa ate 1/3 of pizza. Kate ate 4/12 of same pizza. What fraction did they eat altogether
asked by Chad 
Chemistry
Which of the following is a bond in which a metal transfers one or more electrons to a nonmetal? ionic bond hydrogen bond metallic bond covalent bond
asked by Sara 
Geography
A bolt of cloth containing 25yd 6in. Was cut into 6 pieces. How long was each piece?
asked by Paula 
science help
One group of students is investigating the properties of charged objects. Their observations are listed below. When two positively charged objects are brought close to each other, they push each other away. When two negatively charged objects are brought
asked by Oscar 
physics sound waves
A friend in another city tells you that she has two organ pipes of different lengths, one open at both ends, the other open at one end only. In addition, she has determined that the beat frequency caused by the secondlowest frequency of each pipe is equal
asked by brooklyn 
3rd grade math
Angies grandma lives in cleveland, ohio,and is going to drive to minneapolis, minnesota to vist Angie and her family. The two cities are 752 travel miles apart, and it takes 12 hours to drive that far. a) Angies grandma wants to do the drive in two days.
asked by mythreyee 
Math
Write the missing digits to make each number sentence true 7□7
asked by Mary 
math
the parameter of in a quadrilateral triangle given as 15x times 30 right to different expressions to represent the parameter use factoring to write one of the of the
asked by omariom 
MATH
If 40% of a number is 56, what was the original number? PLS EXPLAIN THANK YOU
asked by SAI 
oscotech
chemistry: is the formula to be used @ 25 degree c is E=Eo (0.059/n(log a)) or Eo+(0.059/n)(log a)
asked by olagunju 
ELA
Hi, I'm having a hard time locating Alliterations in Gary Paulsen's Hatchet book... can anyone PLEASE help me????
asked by Jp 
Algebra
Write an equation in pointslope form for the line through the given point with the given slope (5,2) m=3 a.y+2=3(x5) b.y+2=3x5 c.y2=3(x+5) d.y2=3(x5)
asked by Mary Anne 
Chemistry
Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a Group 7A element? S K Rb Fr
asked by Sara 
English
How would one cite a report done by researchers in MLA format. For example "California Remains the World’s 8th Largest Economy" by CCSCE Thank you
asked by English MLA FORMAT 
Chemistry
In which of the following substances does sharing of electrons between two atoms occur? He Nal PO43– Ag
asked by Sara 
trigonometry
7cos2theta = 6 in the interval (0,2pi) round to 3 decimals
asked by joe diched 
Math
Find the missing length for the pair of similar figures. A. 1.125m B 4.5m C 7m*** D 16m The picture shows two similar right triangles. One with the sizes 4 and 2 and the other 9 and "?"
asked by FirstNameLastName 
science
in what stage of meiosis is there single chromosomes
asked by Kennedy 
Statistics, Math
For 30 randomly selected Rolling Stones concerts, the mean gross earnings is 2.37 million dollars. Assuming a population standard deviation gross earnings of 0.52 million dollars, obtain a 99% confidence interval for the mean gross earnings of all Rolling
asked by Lala 
math 7th
the cost (c) is twice of the cost of a 7$ tape what is the price of the cd
asked by erika 
Algebra
The Browns installed 58 feet of fencing around a rectangular play yard. If the yard covers 204 square feet, what are its dimensions?
asked by Samantha E 
chemistry
Approximately how many joules of heat are needed to raise the temperature of a 4.0gram sample of water to 8.0C? that is all of the information that was provided
asked by Caroline 
Algebra
The top of a rectangular table has an area of 224 square feet. It has a length that is 2 feet more than the width. Find the dimensions of the table top.
asked by Samantha E 
Math
a serving of cereal is 1 1/3 ounces. A box of cereal contains 20 2/3 ounces. How many servings does each box of cereal provide? Do not round. Give exact answer.
asked by Lisa 
Math
Jasmin needs 3/8 yard of fabric for each stripe of a striped quilt she is making. There are 14 stripes on the quilt. How many yards of fabric does Jasmin need?
asked by Kelly 
Math
A sprinkler system is designed to water 5/9 acre of land in 1/3 hour. How many acres of land can it water in 1 hour?
asked by Jess 
Math
Mr Lopez owns a home that sits on 7/8 of an acre. He has decided to plow up 1/4 of the property to create a garden. What fraction of an acre will he plow up?
asked by Kelly 
math
water flows from a faucet at a rate of 5 liters every 25 seconds. At this rate, how much water will flow form the faucet in 45 seconds. Make a table.
asked by Matt 
Pre Calc
Write an equation to a polynomial function that has the following properties: Fourth degree equation Lead coefficient is 2 Two negative real roots and one positive real root The positive real root has multiplicity of 2
asked by Anonymous 
Algebra
Suppose you want to enclose a rectangular garden plot against a house using fencing on three sides, as shown at the left. Assume you have 50 ft. of fencing material and want to create a garden with an area of 150 ft². A. Let w = the width. Write an
asked by Sophia 
math 7th
a candle was 45 cm long .It was lit and 20% burned off .The candle went out.The next day it was lit again ,and 25% of the remaining candle burned out .then it went out On the third day the candle was lit 1/3 of the remaining amount burned off .then it went
asked by erika 
Government
i think it is answer ( b ), can someone make sure What is the difference between criminal and civil law? a) There is no difference. b) The standard of guilt is higher in criminal law than it is in civil law c) The government is always involved in civil law
asked by Adam 
Algebra
1.The table shows the number of miles driven over time. Time(hours):4 , 6 , 8 , 10 Distance(miles):204 , 306 , 408 , 510 Express the relationship between distance and time in simplified form as a unit rate. Determine which statement correctly interprets
asked by GummyBears 
Algebra
Mr. Pilgram needs fencing for his turkey coop. The perimeter is 240 yards. The length is 16 yards longer than the width. What are the dimensions? What is the area?
asked by Bob 
math
6g+5.8=23.8 a=3 b=3 c=1.83 d=4.93
asked by gabby 
math
Thethe permiter of an equilateral triangle is given as 50 next + 30 right to different expressions to represent the perimeter use factoring to write one of the Express
asked by omariom 
Writing
does Bill Gates is the founder of Microsoft need to be cited?
asked by Sherri 
Functions 11
Solve tanx+cosx/1+sinx=secx In two different ways
asked by Jay jay 
College Algebra
You have a credit card with a balance of $3000. Each month the minimum payment is 2.5% of the balance. The monthly interest rate is 1.5% of the balance. You decide you would like to pay off this card by making the minimum payment each month. You cut up the
asked by Tyler 
Government
I think it is ( a ) or ( c ) but not sure What makes precedent important in our justice system? a) It is the current interpretation of the law. b) The US justice system does not use precedent. c) It provides a historical background but is not relevant in
asked by Adam 
Math
Jacob stands 4.5 feet tall and casts a 2.7 foot shadow. A. Using this relationship, determine how tall Jacob's house is if the house's shadow measures 19.2 feet. Assume the triangles are similar. B. Explain the concept of indirect measurement and how it is
asked by Wendy 
Algebra
The sum of two numbers is 53. If twice the 1st number minus 3 times the second number is 26, find both numbers.
asked by Nick 
Chemistry
30.0 mL of 0.0200 mol/L NaOH are added to 70.0 mL of 0.0100 mol/L HCI. Calculate the [H3O+] and [OH─] of the resulting solution My answer: [OH] = 1.00x10^10 M; [H3O+] = 1.00x10^4 M Teacher's answer: [OH] = 1.00x10^11 M; [H3O+] = 1.00x10^3 M Am I
asked by Sam 
Chemsitry
How many milliliters of 0.200M NaOHsolution are needed to react with 44.0 mL of a 0.300 M NiCl2 solution?
asked by Toran 
Algebra 2
Simplify the expression. 6 + i / 5 + i
asked by Sandra 
Math
Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At what rate of speed did Lisa
asked by Wendy 
Pre Calc
f(x)=e^2x1 +3 **(2x1) is the power** what is the equation of asymptote
asked by Anonymous 
Precalculus
You start from an acorn and walk 300 yards do north. Then, you turn N 63° E and walk 260 yards. Then, you turn S 55° E and walk 240 yards. Then you walk back to the little acorn.
asked by Dee 
Math
Below are the dimensions of an assortment of rectangles. Which rectangle has dimensions that are similar to a rectangle that has a dimension 2 times 5? Assume that all the units are identical. 5 times 8 6 times 9 4 times 10 1 times 10 8 times 20 10 times 4
asked by Wendy 
Math
Determine whether x to the third power is always, sometimes, or never a positive number for x+ ). Explain your reasoning.
asked by Jazmine 
Math
I am a number with 8 tens the digit in my ones place is 4 more than the digit in my hundreds place the sum of my digits is 16 what number am i
asked by Mike 
algebra
Speed cell wireless offers a plan of $40 for the first 400 minutes and an additional 0.50 for every minute over 400. Let t represent the total talk time in minutes. Write a piecewise defined function to represent the cost C(T)
asked by jacqueline 
Geometry
A flagpole is 45 feet away from the school building. A 6foot tall student stands 15 feet away from the building. What is the height of the flagpole?
asked by janessa 
math
Kate said 10x4=40. John said 20x4=40. Who is correct?
asked by kerith 
Physical Chemistry
If the n = 3 to n = 4 transition for a certain particleinabox system occurs at 4.00 x 10^13 s 1 , find the frequency of the n =6 to n =9 transition in this system.
asked by Lorin 
Algebra 2
if a varies inversely as b and a=2, when b=15 find a when b=6
asked by Anna 
history
name 3 examples of daliy life in tenochtitlan
asked by rosemary 
Pre algebra
Tropical storm alpha has winds of 50 miles per hour. Write and solve and an inequality to find how much of the winds need to decrease so that the storm is downgraded to 39. Please help, explain steps
asked by Grace 
Math
Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At what rate of speed did Lisa
asked by Wendy 
Chemistry
Assume earth travels in UCM in orbit around the sun R=1.50 x 10 to the 11th power m T365.25
asked by Anonymous 
Government
I think it is ( a ) or ( c ) but not sure What makes precedent important in our justice system? a) It is the current interpretation of the law. b) The US justice system does not use precedent. c) It provides a historical background but is not relevant in
asked by Adam 
math
sharon has 7/8 yard of fabric to use for some projects . she cut off 0.5 yard for her first project . how much material is left for the remaining projects?
asked by anna 
geometry
Write a paragraph proof. Given: A is congruent to B. B is congruent to C. and D is perpendicular to C. Prove: A is perpendicular to D im reallllyyy confused pls help me write this out
asked by HELENA 
math
in one smowstorm there was 3 2/5 inches of snow ,on the ground. In a second strom, 5.65 inches were added to what was already on the ground . How much total snow was on the ground if none melted between storms? a) 2.25 in b) 9.05 in c) 1.66 in d) 5.21 in
asked by anna 
math
To meke a batch of sugar cookies , you need 0.75 cup of sugar and 1/3 cup of butter , among other ingredients. How much more sugar do you need that butter? a) 5/12 cup b) 3/4 cup c) 1/2 cup d) 2/3 cup
asked by anna 
math
For a short distance , an elephant can run about 24 9/10 miles per hour. A human can run about 27.89 miles per hour over the same distance . How much faster does a human run that an elephant ?
asked by anna 
Government
does Congress have ability to change the structure and jurisdiction of the Court
asked by Adam 
Grammar
What type of mistake is there? If he saw an animals' paw prints on the ground a. capitalization b. punctuation c. spelling d. no mistake ans: b. punctuation  should be animal's paw prints A Rodeo's fences and ropes were not for Bob. a. capitalization b.
asked by need help 
Algebra 1
I don't know where to start this problem off with... (x^3) (x)
asked by Alyvia 
math
calculate the mass of cube which has a density of ,1000kg/m^3 and side of length 2m
asked by mamusu 
Please help
Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At what rate of speed did Lisa
asked by Wendy 
math
Write a paragraph proof. Given: A is congruent to B. B is congruent to C. and D is perpendicular to C. Prove: A is perpendicular to D
asked by cory 
chemistry
Determine the specific heat of a material if a 28.4 g sample absorbed 42.9 J as it was heated from 293 K to 336 K. Units are J/g · K.
asked by bee 
physics
A dumbbell has a mass m on either end of a rod of length 2a. The center of the dumbbell is a distance r from the center of the Earth, and the dumbbell is aligned radially. If r≫a, the difference in the gravitational force exerted on the two masses by the
asked by brooklyn 
fifth grade math
How many decimal places are in the product of a number with decimal places to the hundredths multiplied by a number with decimal places to the tenths? A) 2 B) 3 C)4 D)5 Is it C4 ? If not, please explain how i can solve .. thank you :)
asked by nikki 
Geometry
A boat left dock A, traveled north for 10 miles, then 45 East of north for 20 miles and docked at B. A.How far north did the boat travel? How far east did it travel? B. Find the magnitude and direction of the directpath vector AB. a. North 24.1 East 14.1
asked by Shannon 
science
in what stage of meiosis is there single chromosomes
asked by Kennedy 
Genetics/Bio
In need of help for these two questions. Thank you in advance! Restriction Enzyme A has the recognition sequence 5′ CTGCAG 3′. Restriction Enzyme B has the recognition sequence 5′ GCGC 3′. Based on this information, you can infer that: A.
asked by Hayley 
Math
Suppose that 40% of all college students smoke cigarettes. A sample of 20 is selected randomly. What is the probability that at most a fourth of the students smoke?
asked by Katlyn 
Math
Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At what rate of speed did Lisa
asked by Wendy Please Help! 
solid mensuration
if triangle ABC is equilateral,BD\BC=1\3 and AF\AB=1\3.what is the ratio of the area of triangleABC to the shaded area?
asked by jeo 
Math
Below are the dimensions of an assortment of rectangles. Which rectangle has dimensions that are similar to a rectangle that has a dimension 2 times 5? Assume that all the units are identical. 5 times 8 6 times 9 4 times 10 1 times 10 8 times 20 10 times 4
asked by Wendy Please Help! 
centennial college
A child is pushing a 1.7 m wide door by applying a torque of 43 Nm counterclockwise. Find the tangential force applied by the child to the door. Express your answer as a whole number (no decimals) and add the appropriate unit.
asked by inderjeeet 
Algebra
the table shows the height of a plant as it grows. which equation in pointslope form gives the plant's height at any time? Time)months) 2 4 6 8 Plant height (cm) 18 36 54 72 a.y+18=9(x+2) b.y18=9x+2 c.y18=9(x2) d.the relationship is nonlinear
asked by Mary Anne 
English
Fifty states make up the U.S.A. 1. The U.S.A is made up by fifty states. 2. The U.S.A. is make up of fifty states. ============ Q1: Which one is the passive sentence of the first sentence? Q2: Are both grammatical? What is the difference between them in
asked by rfvv 
Math
A carpenter was creating a fence around his back yard the rectangular yard measured 4 1/2 feet by 8 2/3 feet what is the perimeter of the backyard
asked by Suzy 
English
Show apostrophes The moons rays shone feebly on the path, and I heard the insects chirpings and whistlings.
asked by Jared taylor 
math
Storm sewers are hollow cylinders with outside radius of 0.9 m and inside radius of 0.7m. If a section of storm sewer is 2.5m long, what volume of concrete is needed to make it? Please help..
asked by Anonymous 
Chemistry
I'm supposed to estimate the ΔH for O  H2C=CH2 +O3(g) CH3CH(g) + O2(g) and i got [4(432)+(614)+(1072)][3(413)+(347)+(745)+(358)+(467)] the answer i got was 182 but the answer was wrong and i'm not sure what i did wrong.
asked by Jacqueline 
phomolong secondary school
i am a grade 11 learne,i cant choose the that is good for me from the following subject history,geography,life science,sepedi,life orientation,english,math literacy.
asked by emmanuel 
PreCal
A kite string is 400 ft. long. If the kite makes an angle of 42 with the ground, what is the height of the kite?
asked by Noemi 
Vocab
I have done much research on the difference/meaning of connotative definitions and denotative definitions and I'm still very confused. I was wondering if someone could give me a simple definition/meaning thank you!
asked by Luxine