Questions Asked on
March 23, 2017

Chemistry
In which of the following reactions is work done by the system to the surroundings? A) 2CH3OH(l) + 3O2(g) > 4H2O(l) + 2CO2(g) B) S(s, rhombic) + O2(g) > SO2(g) C) 2AgNO3(s) > 2AgNO2(s) + O2(g) D)4Fe(s) + 3O2(g) > 2Fe2O3(s) My guess is B because
asked by Anon 
Physics
Two point charges that have charge values of 4.0 X 10^6 C and 8.0 X 10^6 C, respectively, are separated by 2.4 X 10^2 m. What is the mutual force between them, given that kC = 8.99 X 10^9 Nm^2/C^2? I got the Felectric as 5.0 X 10^2 N, but I'm not sure
asked by Anonymous 
Math 120
A box contains 10 transistors,4 of which are defective. If 4 are selected at random, find the probability that a. All are defective. b. None are defective.
asked by Beth 
Math
A rectangular piece of cardboard measuring 12 cm by 18 cm is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each square in centimetres. a. Give the
asked by NR 
Math
A fair coin is tossed two times in succession. The set of equally likely outcomes is {HH, HT, TH, TT}. Find the probability of getting exactly one head. The probability of getting one head
asked by Jessica 
calculus
(ln(x))^2 dx, integrate.
asked by madeline 
Chem
Your spaceship has docked at a space station above Mars. The temperature inside the space station is a carefully controlled 24 ∘C at a pressure of 745 mmHg. A balloon with a volume of 414 mL drifts into the airlock where the temperature is 95 ∘C and
asked by SOfia 
math
A river flows at the speed of v from west to east. How should a man who is at a point A of the southern bank of the river, which is d meters away from the river, and wants to reach a point B on the northern bank of the river, which is 2d meters away from
asked by James 
Math
Carol has 8 3/4 yards of material. She needs to use 1/3 of the material to make a dress. How many yards of material will she need to make the dress?
asked by John 
Math
Complete the function table and write the function rule. Input (x)   32  20    14  2    ?  6    2  14    10  ?   Please help I am
asked by Dejavu 
psychology
I need a topic that is minimum risk and ethical that the goal is to examine the effects of the independent variable on the dependent variable
asked by Amber 
Maths
£4000 is invested at 1.5% compound interest. Show that the value of the investment after 2 years is £4120.90. Thanks to anyone who can help.
asked by Alfredo 
Algebra
Translate this sentence into an equation. The sum of 11 and Julie's age is 60 Use the variable j to represent Julie's age.
asked by Amy S 
psychology
I'm needing a research topic for proposal that has minimum risk to participates and can be experimented. please help
asked by Amber 
GEOMETRY
Erica made a poster in the shape of a quadrilateral that has only one pair of parallel sides. Which of the following names the shape of Erica's poster? A.square B.rhombus C.rectangle D.trapizoid
asked by CJ SO COOL 
Environmental Science
How is genetic engineering similar to traditional plant breeding? A) Both processes are used to produce desirable traits in crop plants. B) Both processes involve only allowing certain individuals to breed in a population to enhance passing of certain
asked by M, S, E 
Math
1. Graph the points A ( 5,0) B ( 4, 3) and C ( 0, 4) A B C D 2. Identify the quadrant in which (3, 6) lies A II B IV C I D III 3. Determine which ordered pair is a solution of y = 2x  3 A ( 2, 7) B ( 0, 3) C ( 4, 11 D ( 5, 7 5. Graph the linear
asked by Justin 
Math
WHICH KIND OF FUNCTION BEST MODELS DATA IN THE TABLE 0 1,1 0.5, 2 0, 3 0.5,4 1 I'm thinking quadratic because they are constant 0 1.7,1 6.8,2,27.2,3 108.8, 4 435.2 total confused here the x = 1 but the y's have no real sequence linear no quadratic no
asked by Anonymous 
calculus
evaluate the integral. from 0 to 4π t^2 sin(2t) dt
asked by madeline 
Physis
F1d1= f2d2. 0.2×40=xg×0.8 xg=0.2×40\0.8. Xg=0.08\0.8
asked by Favour 
Chemistry
8) ( 1 point) What is the maximum number of grams PH₃ that can be formed when 3.4 g of phosphorus reacts with 4 grams of hydrogen to form PH₃? P₄ (g) +6H₂ (g) → 4PH₃ (g) * 3.7 g 6.8 g 45 g 270 g 10. Lead nitrate can be decomposed by heating.
asked by Jojo 
Math
Sharon runs on a trail that is 8 1/2 miles long. She ran 1/3 of the trail and walked the rest of the way. How far did she run?
asked by Anonymous 
Physical science
Calculate the mass of carbon monoxide that was needed to produce 78 grams of methanol by the following reaction: 2H2+CO=CH3OH
asked by Maria 
math
The box and whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School.
asked by jay 
english
The_________are meeting at the White House. I can't figure out how to use Chief of Staff in the above sentence.
asked by Jerry Owens 
math
(sinx)^(1/2)=cosx x is between 0 and 90 What is sinx
asked by Rafael 
Math(MS SUE PLEASE HELP ME)
since i cant put this picture on here what is the area of a trapezoid with this on it 8 cm, 5 cm, 4 cm,6 cm and 11 cm??
asked by Young Trippy Lil G 
P.E 2
brief history of pandanggo sa ilaw
asked by Gellie ann mae cata 
Chemistry
Calculate the enthalpy of formation if 78.5 g of carbon dioxide in the following reaction: C(s) + H2O(g) > CO2(g) Use the following equations: a) H2O(l) > H2(g) + (1/2)O2(g): Δ°f = +285.8 kJ/mol b) C2H6(g) > 2C(s) + 3H2(g): Δ°f = +84.7 kJ/mol c)
asked by anon 
physics
four point charges on corners of a square.. top left 1, top right +2, bottom left 2, bottom right 1 ... object in middle is 1 ... which direction will that object move? up, down, left, or right (no angles)
asked by christy 
science
Two copper globes are floating in space with a charge of 10 and charge of +16. They come together then go back apart. What are the resulting charges
asked by christy 
Physics
A blue billiard ball with mass m crashes into a red billiard ball with the same mass that is at rest. The collision results in the blue billiard ball travelling with a velocity of v and the red billiard ball with a velocity of 3V. In terms of v and m
asked by Student12 
physic
a body is projected horizontally with a velocity of 20m/s from height of a tower 160m above the ground calculate the time of flight distance from the foot of the tower to where the object land
asked by praizefavor 
Calculus
Find the inflection points and where the function is concave up and concave down: f(x)=x/(x+x^2)
asked by Makenna 
Chemistry
When .1625 g of Magnesium is burned in a bomb container that has a heat capacity of 3.03 kJ/ºC, the temperature increases by 1.252 ºC. How much heat (kJ/mol) is liberated during the burning of magnesium? Just want to make sure I am doing this correctly:
asked by Anon 
Math1
There are 5 pencils in each box how many pencils are in 85 boxes
asked by Courtney 
SCIENCE
WHAT IS MEAN OF CHEMISTRY?
asked by ADEGBOYEGA 
US History
6) One major trend that began during WWII and continued after was: a) The relocation of manufacturing and the defense industry to the west. b) The entry of women into the workforce. c) The use of women in combat roles. d) A decline in the number of union
asked by Jennifer 
math
jeb earns $8 per hour. He gets a raise of 3.5%. How much is his raise?
asked by Haily 
physics
Two small balls are attached to a rigid rod of mass 2.2 kg that is 6.0 m in length. The first ball has a mass of 2.25 kg and the second ball has a mass of 4.95 kg. (c) What is the moment of inertia of the rod when it spins around its center of mass?
asked by anon 
Language Arts
Question: Poets use imagery and words with different connotations and denotations. In a paragraph, define and provide an example of imagery, connotation, and denotation. Then, explain how poets use these elements to contribute to tone in a poem. Support
asked by RL GRIME 
Math
If x is between 0 and 90 what is sin x if sinx^(1/2)=cosx. How can I do it without a calculator??
asked by Larson 
health
what are nuts
asked by john 
Trig
Find the area of a triangle whose vertices are A(0,2), B (2,7), C (0,10).
asked by Sue 
Math
Ellen's carton is 3/7 full. Fern's carton is 3/10 full. Kyle's carton is 3/4 full Who has the least amount left in their carton?
asked by Peyton 
US History UGGGH
Sorry another question I am struggling with finding information in my text and on the web. Some things I am reading seem to be that the answer is d, all of the above. I know that Stalin wanted forces on the East front, but the Allies said it wasn't
asked by Jennifer 
social studies
outline two reason why emotional readiness is necessary for good parenting
asked by berry allen 
Politics
Why would theorists and policymakers from different regions potentially approach IPE differently from one another? Any thoughts? It is said that Marxism is very common in developing countries. In the developed world, we are seeing the protectionism
asked by Thomas 
MATH: Check my answers  HELP ASAP!!
A parking lot space is in the sape of a retangle. if the space has a length of 23 ft and a width of 12 ft, what is the area of the parking lot? A.128 ft B.266 ft C.276 ft######### D.138 ft Check my answer please! I think I'm right.
asked by Prophet 
Algebra 2
On a cold winter night, Anna makes a cup of hot cocoa. When she takes the first sip, she realizes that the cocoa is too hot to drink. She drops a thermometer into the cup and discovers that the cocoa is 170° F. After 20 minutes, she tries again and the
asked by Jordan 
chem
Air trapped in a cylinder fitted with a piston occupies 162.2 mL at 1.08 atm pressure. What is the new volume when the piston is depressed, increasing the pressure by 25%?
asked by Brianna 
Math
The point C(3,1) is translated to the left 4 units and up 1 unit. Write the rule for this translation. What are the coordinates? (x,y)> (x+4,y+1);(7,2) That is my answer. Am I right?
asked by Anonymous 
angular accleration
a wheel if a vehical rotates uniformly at the rate if 120 rotations per mint suddenly it goes faster and reaches 150 rotations per mint after 30s find the angular acc
asked by busra 
Science
The development of the amniotic egg made early reptiles less dependent on water? True False
asked by Jazzy 
Math
3X+Y11 and 2X+Y=1 X= Y=
asked by carter 
chem
The pressure of a sample of helium in a 3.35 L container is 0.988 atm. What is the new pressure if the sample is placed in a 2.94 L container?
asked by Brianna 
chemistry
A fixed amount of oxygen gas is held in a .500 L tank at a pressure of 4.68 atm. The tank is connected to an empty 1.50 L tank by a tube with a valve. After this valve has been opened and the oxygen is allowed to flow freely between the two tanks at a
asked by Brianna 
angular accleration
the ratio of the dimention of linear acc to angular acc is
asked by busra 
Math
2X3Y=24 and X+6Y=18 X= Y=
asked by carter 
angular accleration
a body starts rotating from rest at the rate of 6 rotations per/ secsquare after 8 secs how many rotations will it complete?
asked by busra 
science
Sodium nitrite is prepared by a reaction of sodium nitrate and carbon: NaNO3 + C → NaNO2 + CO2 Calculate the masses of reactants needed for the preparation of 10 g of NaNO2. Carbon is used in 10% excess. The atomic/molecular masses are: NaNO2= 69.0 g/mol
asked by Anonymous 
angular accleration
a boy is sitting on a rotating table he shakes hand with his mother 5 times a mint. she is standing at the side of rotating table. how long will he take to shake hand 50 times
asked by busra 
angular accleration
a fan starts rotating from rest, when it complete 50 rotations its rate of rotation is 10 rotations/sec. what is the angular acc of it
asked by busra 
Math
in 2016, you purchased a new car for $20,000. The value of the car depreciates at a rate of 18% per year. The value V of the car after t years is given by the function V(t)=20000(0.82)t. When will the car be worth threequarters of its original value?
asked by LeeAnn 
Physics
A half pipe can be thought of as half of a cylinder with radius of 7.00m. If a skater with mass 75.0 kg, starts with an initial velocity of 5.00 m/s at the top of the ramp, (a), what is his velocity at the very bottom of the ramp? The skater then
asked by Sophia 
English
Before class project on workplace diversity was due, the class submitted its their it his or her
asked by Stacy 
Physical science
Determine the number of moles of sodium hydroxide produced when 2 moles of sodium and 3 moles of water react to form sodium hydroxide and hydrogen gas.
asked by Maria 
Math
DJ was thinking of a number. He said it had 2 digits, it ended in 5, and the number in the tens place was a 4. What number was he thinking of?
asked by Roger 
Math
A bank account was opened with a deposit of $2750 at an APR of 3.5% compounded one of the following ways. Find the amount in this account after 6 years with compounding of: (round answers to nearest 100th) annually: $ semiannually: $ quarterly: $ monthly:
asked by Adam 
History
What did satraps do? A) protest against secular government B) run provinces on the Persian Empire C) teach Muslim children about their faith D) force Armenians from their homes
asked by Plz help 
Math
Six neighbors share four pies equally how much of pie does each neighbor get
asked by Joana 
math
solve by substitution: addition, subtraction or multiplication. 3X+Y11 and 2X+Y=1 X= Y=
asked by carter 
Probability
After an exam, a teacher starts checking student attempts. Based on the marks he gives, he also awards a letter grade from any of the 5 letter grades; A, B, C, D, and F. How many papers on average should he expect to check to see all 5 grades awarded? At
asked by Anna 
chem
A weather balloon is filled with helium that occupies a volume of 4.33 104 L at 0.995 atm and 32.0°C. After it is released, it rises to a location where the pressure is 0.720 atm and the temperature is 10.2°C. What is the volume of the balloon at that
asked by Brianna 
angular accleration
a fan starts rotating from rest, when it complete 50 rotations its rate of rotation is 10 rotations/sec. what is the angular acc of it
asked by sadia 
Science I guess
So I have been reading the twilight series and I would like to know are you team Jacob or team Edward please bee nice (:
asked by lily night 
physics
Consider the directions of the velocity and the acceleration vectors of an object in uniform circular motion. A. Both vectors point away from the center. B. The velocity points along the tangent, and the acceleration is zero, since the speed is constant.
asked by Idali 
AP physics (answer whatever you can)
how do you find the Fnet of 3 planets? do i find the forces of all the planets on each other and add it up? what if teh planets are at an angled position? 1000 kg car is going clockwise around a curve iwth radius of 30m. coefficient of frction=0.5 if the
asked by Anthony 
Math
Fined the quotient
asked by Zozo 
Math
Solve by substitution :addition, substration or multiplication 2X+2Y=2 and 3X2Y=12 X= Y=
asked by carter 
Math
Solve by substitution :addition, substration or multiplication 4X+3Y=19 and 6X+3Y=33 X= Y=
asked by carter 
Algebra 2
Describe an infinite geometric series with a beginning value of 2 that converges to 10. What are the first 4 terms of the series? Last question and my mind is fried, can someone please help me? Thanks
asked by Fading 
math
Sins=335sin59°÷x
asked by phiweyinkosi 
Math
If the hypotenuse of a right triangle is a=3cm, so A=90 degrees, and the square of the sum of the other two sides is 17, what is the area of the triangle? so basically, (b+c)^2=17 I think you are supposed to use trigonometry to solve it but I don't know
asked by Tanaya 
Math
Solve by substitution :addition, substration or multiplication 2X+10Y=2 and 3X5Y=17 X= Y=
asked by carter 
Math
Find the three rational number of 5 and 2
asked by Sanjay 
biology 30
suppose that sample of beef broth initially contains 16 bacterial cells. after 4.0 h, there are 1.6 x 106 bacterial cells in the sample. calculate the growth rate of the bacterial population for the given time interval. (record your answer in scientific
asked by lalala 
math
(18)(+11)=
asked by carter 
Math 120
In how many different ways (counting the orders) can the San Diego Chargers score exactly 10 points in a football game? Points are scored as follows: A safety scores 2 points, a conversion scores 2 points, a field goal 3 points, a touch down 6 points, and
asked by larry 
Precalculus
Parabola x^2+10x+4y29=0 in standard form
asked by Halree 
Environmental Science
Which term is used to describe when genes are transferred from one species of crop plant to another to produce desirable traits such as pest resistance? A) Selective breeding B) Genetic engineering I think the answer is A
asked by M, S, E 
Math
I NEED TO KNOW HOW TO DO THE WORK FOR THIS QUESTION!!!!!!!!!!!!!!!!!!! Find the length of each side(triangle) first sidex second sidex+2 third sidex+3 Perimeter=35m "answer = 10m, 12m, 13m" ^^^^how do you get this???
asked by Ahri 
Precac
Find a such that f(x)= ax^23x+5 has a maximum value of 15. I'm stuck because how am I suppose to complete the square? 3/2= 1.5? then square 1.5? So lost.
asked by Sam 
P.E 2
brief history of singkil
asked by Gellie ann mae cata 
Math1
You buy a new computer for $2100. The computer is decreases by 5% annually. When will the computer have a value of $600? Y = a(1+r/n)^n(t)
asked by Jordan 
P.E 2
brief history of tinikling
asked by Gellie ann mae cata 
Maths
Before an election, 23% said they would vote for A 9% said they would vote for B 20% said they would not vote. These all voted as they said. The rest of the population voted for A and B in the ratio 1:2 Who got the most votes? Thanks to anyone who can
asked by Sinbad 
P.E 2
brief history of maglalatik
asked by Gellie ann mae cata 
P.E 2
brief history of cariñosa
asked by Gellie ann mae cata 
Maths
Last season a football club sold 8000 season tickets at £250 each. This season the season ticket price is reduced by 20% to £200. If the club sell 20% more tickets will the amount of money they receive increase, decrease or stay the same?
asked by Gertrude 
Maths
Harry is tiling a wall of area 25m squared. A tub contains 15kg of tile cement. The instructions say 2kg of tile cement will tile 1m squared of wall. How many tubs does Harry need to buy?
asked by Gerty Berty 
Math
A sports reportor said that 2 out of every 3 people at a home town base ball game named baseball vs their favorite sport the reporter claimed that baseball was the mostpopular sport in town which of th following explains why the reporters might not be true
asked by Anonymous 
math
(9)(+21)=
asked by carter 
Math
Given that x²cos ysin y=0 ,(0,π): a)verfiy that given point is on the curve. b)use implicit differentiation to find the slope of the above curve at the given point. c)find the equation for tangent and normal to the curve at that point.
asked by Abdullah11 
ELA
In "How Beaver Stole," what changes to the land does Beaver cause when he runs away with fire?
asked by Jack 
English
In my speaking exam I want to talk about why children should have mobile phones? But is there many facts about this or should i be against it?
asked by Ruwaydah 
English
1. Sure. Here, take a look. 2. It's a picture of rocks, right? 3. Not only rocks, Tom! Look closer. There are eggs. 4. Wow, I can't believe it.  Q1: What is the full form of "Not only rocks'? a or b? a. They are not only rocks.
asked by rfvv 
geometry
The foot of a 25foot ladder is 15 feet from a wall. If the ladder is pushed until its foot is only 7 feet from the wall, how much farther up the wall is the ladder pushed?
asked by jay 
early childhood
At what age do children usually engage in exciting, dangerpacked themes in dramatic play
asked by gina 
Language Arts 8B
I just need to know if my answers are right or wrong. Thanks! 1. Which of the following is the best definition of stage directions? A. notes on how to write a story B. notes on how the work is to be staged and preformed C. notes on how to place props and
asked by KayB 
Social Studies Help!!
1, what was the main purpose Roosevelt made in the 1932 election that helped him win? He promised to reorganize the economy He promised to help the jobless, poor farmers,and elderly ******* He promised to regulate big banks more heavily to prevent another
asked by Hey I need help! 
Math
Matthew drew a building to scale so that 2.7 inches represented 81 feet. How many feet would 2.8 inches represent?
asked by KTreon 
Maths
In a gp fifth is 4 times the 3rd term and sum of first two terms is 4. Find the terms of gp
asked by Shashank 
physics
A typical magnitude of the external magnetic field in a cardiac catheter ablation procedure using remote magnetic navigation is B = 0.080 T. Suppose that the permanent magnet in the catheter used in the procedure is inside the left atrium of the heart and
asked by Sam 
Math
If there are 12 green pencils, 4 red pencils, 7 blue pencils, and 2 black pencils, what is the chance of picking a red pencil at random?
asked by Hannah 
Chemistry
A solution is prepared by pipetting 5.00 mL of 0.0983 molar HCl into a 100.0 mL graduated cylinder, and adding enough water to prepare 50.0 mL of solution. 1.The concentration of this solution is ____________M 2.The pH of this solution is ____________
asked by Megan 
Functions, please help
A towns' population, P(x), is given by the function P(x) =2700x + 21000 where x represents the years since 2003. The population will reach 83,400 in ______ The population in 2010 will be ______
asked by Carlos 
Help please I am lost, algebra
I have notes on this from online but they are different from this problem and I don't know how to solve it. Find the equation of a line with the given information: slope 5/4 and g(14)=6 It is asking for, point slope form, slope intercept form, Function
asked by Sam 
math
find 4 numbers that 5 divide into equaly
asked by Anonymous 
math
A thrill ride at an amusement park holds a maximum of 12 perople per ride. write and solve an inequality to find the least number of rides needed for 15,000 people. Do you think it is possible for 15,000 people to ride the thrill ride in 1 day? explain
asked by Aargh 
science
A marble at rest is dropped from the top of a building. Find the marble’s velocity after it has fallen for 3 s. Ignore air resistance. Use the formula: v = g x t, where v = average velocity, g = acceleration due to gravity and t = time
asked by Charlies Timbs 
Physics
A 2.5kg block is on 53° inclined plane for which coefficient of kinetic friction is 0.25 and coefficient of static friction is 0.5. Calculate its acceleration given that: (a)it is intially at rest (b)it is moving up the slope
asked by Wwc 
english
true or false: william shakespeare followed the elizabethan structure of a four act play
asked by sadie 
physics
the potential energy of a spring..when stretched by 4 cm is u..when stretched by 20 cm it will ?
asked by mohit 
Trig
Find the area of quadrilateral whose verties are A(0,2), B(2,7), C(6,10), and D (9,2).
asked by Sue 
Math
6 friends share 5 apples equally. How much apple does each friend have?
asked by Kay 
Calculus  Newton's Method
Use the Newton's Method to approximate the real root of the equation: f(x)=x2+cosx=0 a) What is the iterative equation of Newton's method of the given equation? b) Iterate the equation with starting point x1=5 until you get a repetition of the four digits
asked by Jaime 
Math(PLEASE HELP ME ASAP)
The distance between mountianview and crowntop is 6.5 inches on a map. if the scale on the map is 1 inch= 25 miles what is the actual distance between the two towns i have the correct answer it is 162.5 miles the etcher gave us this answer but how would i
asked by Young Trippy Lil G 
English
How are you doing? I'm fine. I'm okay. I'm good. I'm great. I'm doing fine. I'm doing okay. I'm doing good. I'm doing great.  Are the answers all fine? ============================== How is it going? 1. I'm terrible. 2. I'm not so
asked by rfvv 
Science
If a 1 tonne car travels at 16.7 m/s (60km/h) then it would have a momentum of
asked by Jake 
ELA
Can someone give me examples of analogies in O Captain! my Captain and The road not taken or at least help me find them so that I can myself compare and contrast the use of analogies in both of these poems Thanks in advance
asked by connexus student 
Maths
(1+a+b+c)(1+ 1/a +1/b +1/c )= 16 then find a+b+c. Show the method
asked by Sanjay 
Maths
In a cricket, a bowler throws a ball at the height 5m. A ball bounces on the pitch at 8m away. A wicket keeper catches this ball from 5m away at the height of 8m. How much distance the ball has covered after pitch. Please show the method.
asked by Sanjay 
Maths
The party of kejriwal walks from gwalior to Bhuvneshwar. They first walk straight for 150km and then turn 45 ddegree towards Varansi and again go straight for 120km how for have they travelled from the initial place. Please show the method.
asked by Sanjay