Questions Asked on
September 24, 2016

Algebra
To solve by the elimination method. 5x+7y=40,x=y+3
asked by Ann 
Algebra
To solve by elimination 4x6y=10,x+y=0
asked by Ann 
math
Ron has a piece of rope 6 1/2 long,Tony has one that is 7 2/3m long.How long are their ropes if put together?
asked by lea 
physics
Hello everyone I'm working on this problem and I need some clarification. A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines? What is the horizontal force that a 700 N pilot exerts on his seat?
asked by Jadon 
Physics
A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines? What is the horizontal force that a 700 N pilot exerts on his seat?
asked by Jadon 
Maths
Find the measure of angle BCA and angle BAC if the measure of angle B is 65°
asked by Charvita 
Science
The binding energy of election is 13.6 v .the loss of mass in formation of h atom is
asked by Jinkal 
Maths
In a right angle traingle ANCIENT, ANGLE B=90 DEGREES. IF AB/AC=1/ROOT2 FIND BC/AC.
asked by Debina 
maths
A variable tangent to the ellipse (x/a)^2 +(y/b)^2 meets the parabola y^2=4ax at L and M. Find the locus of the midpoint of LM.
asked by joel 
maths
Prove that in any triangle ABC Sin2A+Sin2B+Sin2C/SinA+SinB+SinC=8Sin(A/2)Sin(B/2)Sin(C/2)
asked by joel 
English
1. Is John Hajun¡¯s gold friend or silver friend? He is Hajun¡¯s gold friend. 2. What do you want to do in Yosemite? I want to go fishing. 3. How many close friends do you have? I have five close friends. 4. Have you ever been to the States? No, I
asked by rfvv 
maths~log
2logxbase5+3logybase3=8 and 6logxbase5+2logybase3=2 solve silmultaneously
asked by samson 
SCIENCE
The intensity of solar radiation at the surface of the earth is 1kW/m2 . A roof has a square solar panel of sides 10m that absorbs the radiation completely. What is the average force exerted on the panel?
asked by OWOLABI 
Trigonometry
Give me some equations about angle of elevation, angle of depression and angle of inclination that is related to my course. Im a food technology student.
asked by Rowena 
IT
Meaning, types and feautures of digital divide
asked by Moyo 
Chemistry
An element has three stable isotopes. One has a mass number of 63 and an abundance of 50%. The second has a mass number of 65 and an abundance of 30%. The third has a mass number of 67 and an abundance of 20%. Calculate the relative atomic mass of this
asked by Robert 
Maths
Ari had twice as much money as Rita. After Ari spent $800 and Rita spent $240 both of them had the same amount of money left .how much money did each of them have at first
asked by Krish 
English
1. When did they arrive at Yosemite?  They arrived at Yosemite in the afternoon on July 20. 12. When did they arrive at Yosemite?  They arrived at Yosemite in the afternoon on July 20, Friday. 13. When did they arrive at Yosemite?  They arrived at
asked by rfvv 
Geometry
I am doing 7th grade algebra, and my homework is due by 9:00 and I don't know how to solve this question: Find the measures of supplementary angles 1 and 2 if, A) m angle 1 is less than m angle 2 by 40 degrees B) m angle 1:m angle 2=5:4 Please help soon my
asked by Ava 
Geometry
I have another question that stumped me Line segment AB with length a is divided by points P and Q into three line segments: AP , PQ, and QB , such that AP = 2PQ=2QB. Find: A)the distance between point A and the midpoints of the segments the segment QB B)
asked by Ava 
maths need help
angles of a certain polygon are in arithmetic sequence. The smallest interior angle measures 80 degrees and the largest interior angle measures 160 degrees. How many sides does the polygon have? Plz show me work i don't know it at all plz
asked by phum 
Math
If you want to add 2/3 and 3/5, you will find the LCM of the denominators then divide the LCM of the denominators and multiply it with the numerators then add it...
asked by Sheena Jane 
chemistry
Paper pulp is sold on the basis that it contains 12% moisture; if the moisture exceeds this value, the purchaser can deduct any charges for the excess moisture and also deduct for the freight costs of the excess moisture. A shipment of pulp became wet and
asked by jana 
maths help
What is the least number of rolls should a fair standard 6sided die be done so that the recorded numbers that have been shown approximates a binomial distribution of standard deviation of 10 and a success occurs when a 4 is tossed?
asked by wqa 
Maths
Hey! I have this problem  i'm currently working on Quadratics at school, and i got homework. One of the questions is 18^2+2px+32. I have to find the Value of P, the answer i got is P>+24. Can someone please confirm this is correct?
asked by Simon 
Math
7 is subtracted from the quotient of 48 divided by sum of 5 and difference of 11 and 8
asked by sumit 
Bows
How many pieces of 4 Inches of ribbon can get from a roll of 25 feet ribbon?
asked by Ann 
Physics
A fired bullet sounds is heard after2sec .its speed in air is 340m\sec.what is the distance of sound.
asked by Pratham 
math
Connie has 18 and mae has 16 apple also. How many apple they have? Solve in four different ways.
asked by shirly 
maths
How many circles are there whose central lines on X axis and passes through origin?
asked by sanjay 
Math
Village B is 7km due south of village A and village C is 9km due south of B. Village D is 8km from A and is due east of B. Find DB and DC.
asked by Jane 
Math
Points P and Q are both in the line segment AB and on the same side of its midpoint. P divides AB in the ratio 2:3, and Q divides AB in the ratio 3:4. If PQ=2, then find the length of the line segment AB.
asked by Samhitha 
chemistry
A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 11.07 % naphthalene by mass. Calculate the vapor pressure at 25 ∘C of hexane above the solution. The vapor pressure of pure hexane at 25 ∘C is 151 torr.
asked by elizabeth 
Report Writing
The narrative of a crime report and the narrative of an arrest report: a. are totally different b. need to be written in present tense and passive voice, c. follow the same rules d follow different rules
asked by Tracy 
Chemistry
to determine the concentration of ascorbic acid in fruit juice using DCPIP
asked by Zanele 
chemistry
If 10.0 L of butane and oxygen are combined at the same temperature and pressure, which gas will be left over after reaction? Include your calculation/reasoning.
asked by Darren 
chemistry
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 252 torr . Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction of
asked by liz 
Math
When might I need to estimate a sum?
asked by Caleb 
Chem
A hypothetical molecule, X–Y, has a dipole moment of 1.76 D and a bond length of 151 pm. Calculate the percent ionic character of this molecule.
asked by Alsiha 
english
There is a text named Adolescent Confusion by Maya Angelou, and I have to write a paragraph about : Most teenagers are, at times, as impulsive and unthinking as Angelou was. Write a narrative about a time during your teenage years when you did something
asked by angie 
Chemistry (Help!)
Reaction: 1/2N2 + 3/2H2 > NH3 Delta H = 46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 + 3 mol N2 b) 3 mol H2 + 0.5 mol N2 M NH3 = 17 g/mol ???
asked by Christine 
Science
Q1Who gave the equation (E=MC^2). Q2Who gave the equation (V=IR). Q3What was Newton's second law?. Q4What was Newton's first law?.
asked by Varun Dhawan 
Maths Percentage
Find the percentage of pure gold in 22carat gold, if 24carat gold is 100% pure gold.
asked by Vivek 
Social Studies
Before 1720, what was the difference in the relationships between the Spanish and the Apache compared to the Spanish and Hasinai? A. The Spanish made peace with both the Apache and the Hasinai. B. The Spanish had a working relationship with the Hasinai
asked by Pier 
Physics
You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.20 m/s. You jump at an angle of 28.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.57 m away from you. If
asked by Brooklyn 
Math
three numbers are in harmonic progression. their mean is 20.if the first term is twice the third term find the three numbers???
asked by Fida 
Math
A room measures 6m by 8m to the nearest meter. A carpet tile measures 50cm exactly. What is the maximum number of carpets tiles that need to be bought to cover the floor of the rectangular room?
asked by Lucifer 
Science
You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already
asked by BunBun 
Physics
"You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already
asked by BunBun 
CHEMISTRY HELP
Reaction: 1/2N2 + 3/2H2 > NH3 Delta H = 46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 + 3 mol N2 b) 3 mol H2 + 0.5 mol N2 M NH3 = 17 g/mol ???
asked by Christine 
maths
guys need help on ODE questions, i just need you guys to tell me what method to use for the following equations and i will try solve them myself: a) (2y+tany)dx +(xx^2(tany))dy=0 b) y'=(e^x)(2y+(e^x))+y(1+y) c) y'=1+y^2x^2 any hints will be good also. XD
asked by lim 
value
what happens when a solution of iron 2 sulphate in a test tube was bubbled through chlorine gas
asked by value 
Chemistry
Aqueous solutions of copper (II) sulfate, CuSO4, and potassium carbonate, K2CO3, a blue parcipitate of copper (II) carbonate forms in addition to one other compound. We have to write the balanced chemical equation for that but our teacher didn't teach us
asked by Sarah 
Biology
Explain the structure of a water molecule and how hydrogen bonding leads to some of its very special properties. Be sure to include how these properties are important to life on Earth
asked by Kayla 
Stats, Statistics, Math
A Statistics professor assigned 10 quizzes over the course of the semester. He wanted to see if there was a relationship between the total mark of all 10 quizzes and the final exam mark. There were 229 students who completed all the quizzes and wrote the
asked by Papi 
Physics
Block A (Mass = 3.146 kg) and Block B (Mass = 2.330 kg) are attached by a massless string Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes overa frictionless, massless pulley. Block B hangs down
asked by Quaz 
Social Studies
What countries are the following? is 20 degrees S, 140E? 40N, 20E? 40N, 100W?
asked by RD 
Spanish
Can anyone write a short paragraph explaining how things are similar and/or different between the U.S. states that border Mexico?
asked by Lilly 
Physics
A BMX rider is coming up to a ramp that is set to 23.0° and the end point is 1.60 m above the ground. They travel up the ramp at a steady speed of 9.20 m/s. What speed will they have just before they hit the ground?
asked by Brooklyn 
Physics
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.00 m/s and Luna runs at a speed of 1.20 m/s. If Chloe jumps at an angle of 37.0° while still running toward Luna, at what distance from
asked by Brooklyn 
Social Studies
What country or continent is located at 40°S,100°E?
asked by RD 
English
Teen Financier Gets Oprah's Attention. How did Lesley Scorgie acquire the money to make her investments? Why is Lesley Scorgie unusual? Why do you think she was invited to be a guest on Oprah Winfrey's talk show? In what ways could Lesley Scorgie influence
asked by Anonymous 
Math
2,383 1,907 
asked by Faith 
Science
1. What number on the pH scale is the strongest acid? 2. What number on the pH scale is the strongest base? Can you please help me with this. I am not sure.
asked by MattPlease Help 
Math
Check My answers 2. Name the Property of Equality that justifies this statement: if P = q then p + s = q + s. A. Reflexive Property B. Multiplication Property C. Symmetric Property D Addition Property **** 3. Use the given property to complete the
asked by Lilly 
American government
what expressed powers show that the framers wished congress to have the power to secure the nation against? 1. raise armies and a navy 2. establish a federal post office 3. levy taxes, duties, and excises 4. regulate interstate commerce 5. govern the
asked by leslie 
Chemistry
The pressure in pressure cooker is 1.90 what will be the temperature
asked by Humza Alvi 
Science
How do acidity and surface area affect the weathering of most materials? Can you also provide me with a website to read about this as well. I don't know
asked by MattPlease Help 
Physics
Block A (Mass = 3.500 kg) and Block B (Mass = 2.450 kg) are attached by a massless string Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes overa frictionless, massless pulley. Block B hangs down
asked by ASak 
American government
what expressed powers show that the framers wished congress to have the power to secure the nation against? 1. raise armies and a navy 2. establish a federal post office 3. levy taxes, duties, and excises 4. regulate interstate commerce 5. govern the
asked by leslie 
Physics
You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.90 m/s. You jump at an angle of 30.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.72 m away from you. If
asked by Tom 
MathAlgebra
What is the value of 4^2  2(3 x 5 + 1)? My answer~ I took (3 x 5 + 1) = 16 x 4^2 = 16  2 = 14, and I got 254, but that's not on my answer recommendations, I don't understand this at all, plz help meh!! A.8 B.1 C.16 D.21
asked by Fieroh 
Math
If you had an equation zero is less than or equal to 2 would you say that's true because 0 is less than 2 or false because it isnt equal to 2? What would I write down if it asked for T or F
asked by Anonymous 
Chemistry
Five year old Andrew weighs 45 lbs and requires insulin. His doctor has prescribed 0.150 units of insulin/kg body weight/hr while he is in the hospital. The insulin bottle you have possesses a concentration of 20.0 units/15.0 ml and all must be given. Give
asked by Laura 
american government
what expressed powers show that the framers wished congress to have the power to secure the nation against? 1. raise armies and a navy 2. establish a federal post office 3. levy taxes, duties, and excises 4. regulate interstate commerce 5. govern the
asked by leslie 
Spanish
Can anyone write a short paragraph explaining how things are similar and/or different between the U.S. states that border Mexico?
asked by Lilly 
american government
which of the following gives congress the power to fund parts of the executive branch such as the department of education? A. eminent domain B. judicial powers C. strict constructionists of the constitution D. necessary and proper clause My best answer is
asked by leslie 
American Government
which of the following powers can congress exercise according to the constitution? 1. abolishing jury trials 2. collecting taxes 3. declaring war 4. requiring people to vote my best answer is 1 and 3
asked by leslie 
american government
national emergencies, advances in technology, and demand for services have increased congress's acceptance of which view? A. conservative constructionists B. liberal constructionists C. radical constructionists D. strict constructionist which of the
asked by leslie 
Math
If you had an inequality x is less than or equal to 8 would you shade towards the origin or away from the origin
asked by Anonymous 
Maths
Muhhamad says my number has 6 tens.the ones digit less then ten digit.what could mahhamad number be show all possibilites.
asked by Ryna 
Math
I have a question. My teacher wrote down that 0 is less than or equal to 10 is true. Why is that?
asked by Anonymous 
Chemistry
CaCl2(s) > Ca(aq) + 2Cl(aq) ΔH_rxn = +198.0 KJ "If that g sample of calcium chloride was dissolved in 1000.0g of water, with both substances originally at 25.0C, what would be the final temperature of the solution be? Assume no loss of heat to the
asked by Maddison 
Science
A car moves at 20 meters in 2 seconds. What is the momentum of the car if it has a mass of 3,000 kg? A football player runs across the field for a tackle. He has a momentum of 1,120 kg x m/s and is moving down the field at 10 m/s what is the mass of the
asked by YOLANDA 
Math
A 36 inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece find the length s of all three pieces
asked by Colleen 
Chem
How many ml of 12M HCl are needed to prepare 500ml of 0.10 M solution? Step by step if you can please.
asked by Areli 
Math
Information: Juan plans to build a bookcase t store his paperback books, DVDs, and CDs. he has lumber that he will use for the sides and back of the bookcase. Juan plans for his bookcase to have five shelves including, the top and bottom shelves. Each
asked by Josephine URGENT PLEASE ANSWER 
science
what is the difference between the momentum of a 2,500 kg honda moving at 40 m/s and a 2,500 kg honda moving at 15 m/s whats the formula? or answer
asked by unknown 
American Government
which of the following best describes the interpretation of the constitution by a strict constructionist? A. favors a powerful national government that exercises implied powers B. favors a strong president and the necessary and proper clause C. favors a
asked by Leslie 
Chemistry
Andrew weighs 45 lbs and requires insulin. His doctor has prescribed 0.150 units of insulin/kg body weight/hr while he is in the hospital. The insulin bottle you have possesses a concentration of 20.0 units/15.0 ml and all must be given. Give all answers
asked by Amy 
Physics
An electric dipole p> (> is vector symbol) where p> = (5x10^15 C m, 5x10^15 C m, 0 C m) located at r> = (0 m, 0.005 m, 0m) Q = 1x10^6 C at origin. What's the torque on the dipole?
asked by Jan 
Organic Chemistry
What would happen to the melting point of a solid if it is mixed with granular particles of glass? Explain.
asked by Anonymous 
Physics
Four charges are located at the four corners of a square of side b: Q1 = 3 nC at the top right corner, Q2 = 4 nC at the bottom right corner, Q3 = 5 nC at the top left corner, Q4 = 7 nC at the bottom left corner. What is the electric field at the midpoint
asked by Steve 
Science
If you have 25 glucose molecules transporting out to 5 glucose molecules how will the molecules need to move to reach equilibrium? Out
asked by Hayden 
Physics
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.80 m/s and Luna runs at a speed of 1.60 m/s. If Chloe jumps at an angle of 17.0° while still running toward Luna, at what distance from
asked by Tom 
English
I'm having trouble making out what this section means: "...and as soon as her daughter was in a condition, sent her to a monastery in France, the abbess of which had been her particular friend. And thus ended an intrigue which, considering the time it
asked by Ana 
math
Juan sells suits in a major department store on weekends.He earns a commission of 5% on the first 10 suits, and if he sells more than 10 He earns an additional 3% on the additional suits. Last weekend Juan sold 13 suits at a price of $250 each. What was
asked by donna 
physics
HARRY GIVES SAM A 30m head start in 100m dash. Harry can run 10m/s, while sam only runs 6.0 m/s per second, how much of a head start does sam need to win!
asked by brahtherfrmanothermather 
US History
Could you pls check this time line 1, king George issues Proclamation of 1763 2, stamp act 3. Sons of Liberty 4. Boston Massacre 5. Boston Tea Party 6, coersive acts 7, 1st continental congress 8. 2nd continental congree 9. First sho of American revolution
asked by lulu 
History
1. Which group most directly influenced the maya and the Aztec? A: Mexican B.moche C.olmec * D.puebloan 2.Which of the following are evidence that one civilization had a large influence on both the Maya and the Aztec? Select all that apply. (3 are correct)
asked by Jam 
Math/Chem
Is it possible to get a negative percent as an answer to a problem
asked by Anonymous 
Maths
There is a staircase connecting point A andB. Measurement of steps are marked. Find the line distance between A and B.fig 4.232 in rd sharma. Class10 Answer is 10
asked by Anupam Sharma 
Precalculus
Circle O below has radius 1. Eight segment lengths are labeled with lowercase letters. Six of these equal a trigonometric function of theta. Your answer to this problem should be a six letter sequence whose letters represent the segment lengths that equal
asked by Human 
communication skills
explore the following types of listening skills i) passive listening ii) active listening
asked by desire 
Physics
Ximena stands near the edge of a cliff 20 ma bove her friend Javier. If she throws a ball to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the sandwich's initial velocity? (use
asked by Tom 
Math 6th grade
Juan plans to build a bookcase to store his paperback books, DVDs, and CDs. He has lumber that he will use for the sides and back of the bookcase. The bookcase will have five shelves, and each shelf will be 2 1/2 feet long. DVD cases are 9 16 inch wide.
asked by Jada 
Physics
If a dog chases its tail in a perfect circle of radius r at constant speed v, which of the following is true? A. The dog's acceleration is zero. B. The dog's velocity is constant. C. The sum of the forces, F , acting on the dog is zero. D. The time it
asked by Lyon 
biology
is c2h5 polar or non polar?
asked by kailyn 
Chemistry
Please help...entrance exam soon Write the oxidation and reduction half reactions(showing e lost or gained) for the foll O3 + I > IO3 + O2 (acidic)
asked by Maria 
Algebra
The perimeter of a rectangle is 80 in. The length is 6 inches more than the width. What are the dimensions of the rectangle
asked by Crystal 
math
Please help me to answer in four different ways by ADDITION ONLY: QUESTION; CONNIE HAS 18 APPLE AND MAE HAS 16 APPLE, HOW MANY APPLE THEY HAVE?
asked by shirly 
Math 6th grade
Juan plans to build a bookcase to store his paperback books, DVDs, and CDs. He has lumber that he will use for the sides and back of the bookcase. The bookcase will have five shelves, and each shelf will be 2 1/2 feet. DVD cases are 9 16 inch wide. a. If
asked by Jada 
6th grade math
Juan has 28 paperback books. Each book is 11 4 inches wide. Will all his books fit on one shelf? If not, how many will fit and how many will have to go on another shelf? If yes, how many more paperback books, if any, will fit on the same shelf? Explain.
asked by Allen B 
physical science
How much would a 81.4 kg person weigh on Venus, where the acceleration of gravity is 8.87 m/s2?
asked by Natosha 
Applications of functions
you have 20 gallons of gas in your car and you burn one gallon every 25 miles. write a function rule for the amount of fuel left in the car after every 25 miles
asked by Diana 
Physics
A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. At what angle must it be fired to hit the target? how long after it is fired will the target be hit?
asked by Aria 
Chemistry
Similar question to http://www.jiskha.com/display.cgi?id=1474753951 "If that 22.33g sample of calcium chloride was dissolved in 1000.0g of water, with both substances originally at 25.0C, what would be the final temperature of the solution be? Assume no
asked by Steve 
math 6th grade
Juan measured the location for the bookcase and realized that his shelves can be no more than 13 4 feet wide. a. What is the maximum number of shelves Juan could build for this new bookcase using the lumber he bought? b. How many DVD cases will he be able
asked by BarbaraC 
Business Law Help!!!
Which of the following is a primary cause of sick building syndrome in the United States? A. large number of outside ducts B. unsealed windows C. thinly insulated buildings D. hazardous construction materials An : D
asked by Angela 
math 6th grade
Juan measured the location for the bookcase and realized that his shelves can be no more than 1 3/4 feet wide. a. What is the maximum number of shelves Juan could build for this new bookcase using the lumber he bought? b. How many DVD cases will he be able
asked by CASSIE 
math 6th grade
Juan plans to build a bookcase to store his paperback books, DVDs, and CDs. He has lumber that he will use for the sides and back of the bookcase. The bookcase will have five shelves, and each shelf will be 2 1/2 feet. DVD cases are 9 16 inch wide. a. If
asked by CASSIE 
chemistry
How many GRAMS of carbon dioxide can be produced from 3.70 grams of oxygen ?
asked by lola 
Physics
While playing catch with your sister, you accidentally throw a tennis ball past her and horizontally out the window of your third floor apartment. If a window washer is startled by the passing tennis ball and drops her sponge from rest at that very moment,
asked by Lyon 
Physics
You push a block of mass m up a plane inclined at angle θ at constant velocity v with a force F parallel to the inclined plane. The coeﬃcient of kinetic friction between the block and the plane is µk. Which is the correct equation for F? (g =
asked by Rick 
Math
Jacob opens a savings account on Jan 1 with a deposit of $250. Every other week $25 is deposited. The bank charges $3 for a processing fee monthly. How much will he have at the end of the year?
asked by Anonymous