Questions Asked on
March 17, 2017

Physics
Two point charges of 16 microcoulomb and  9 microcoulomb are placed at8 cm distance. determine the position of the point at which resultant electric field is zero
asked by Harsh 
Math
Square ABCD has side length 60. An ellipse E is circumscribed about the square and there is a point P on the ellipse such that PC = PD =50. What is the area of E? I got to the part with the point (30, 30). Now what next?
asked by Steve 
math
A motorboat covers the distance from one pier to the other pier in 4 hours and the way back in 5 hours. What is the speed of the boat in still water, if it covers 70 km with the current in 3.5 hours?
asked by annie 
Algebra
An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If x engines are made, then the unit cost is given by the function =Cx+−0.2x248x21,748 . What is
asked by Shelby 
Math
Use the stermandlead plot below to answer questions 13 Stem Leaf 5 4 5 6 0 6 9 7 2 3 4 5 5 8 1 2 8 9 9 5 6 5/4= 54 1. What is the range of data? A. 40*** B. 42 C. 54 D. 96 2. What is the median of the data? A. 64.5 B. 72.5 C. 74.5*** D. 75 3. What is
asked by Help me plz 
Geometry proportions in triangles
1. What similarity statement can you write relating the three triangles in the diagram? A. UVW~UWT~WVT B. UVW~ WUT~WVT C. WUT~ VUW~WVT D. TWV~ WUV~UWT 2. What are the values of A and B? A. a=9/2, b=15/2 B. a=15/2, b= 9/2 C. a=16/3, b=15/2 D. a=9/2, b=13/2
asked by Idkkk 
calculus
Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→∞ {(5x − 4)/(5x + 3)}^5x + 1
asked by christina 
Social studies 7
What inspired the boxer rebellion? The open door policy Industriazatiin in Japan Foreign influence in china The overthrow of queen liliuokalani
asked by Mackenzie 
Math  Trigonometry
A, B and C are three towns, the bearing of B and C from A being 295° and 205°, and their distances from A are 280km and 800km respectively. Find the bearing of C from B to the nearest minute.
asked by Anonymous 
Chemistry
A gas expands its volume from 4.7 L to 8.9 L at constant temperature. Answer the following: a) If the gas expands against vacuum conditions, calculate the work (in joules) done by the gas. b) Calculate the work done (in joules) by the gas if it expands
asked by Anon 
Calculus/Optimisation
An open water tank with a square base is to be made from a thin sheet of metal. find the length of the square base and the height of the tank so that the least amount of metal is used to make a tank of capacity 8 meters cubed
asked by J. 
Chemistry
What is the final temperature when 180.0 mL water at 101.3 C is added to 93.1 mL of water at 65.5 C?
asked by Anon 
math
Two shelves contain 55 books. If half of the books from the second shelf were relocated to the first shelf, then the first shelf would contain 4 times more books than the second one. How many books are there on each shelf?
asked by annie 
physical science
an object has 2.0x 10^19 more electrons than protons. What is the net electric charge of this object in coulomb?
asked by fred 
calculus
Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→0 (e^x − e^−x − 2x)/(x − sin(x))
asked by christina 
science
Two charges repel each other with a force of 105newton when they are 20cm apart. what is the force on each of them are i 3cm apart and ii when they are 100cm
asked by physics 
science
The wood thrush is a bird species that lives in deciduous forests in North America. Wood thrushes nest in tall trees, forage for insects and snails in decaying leaf litter on the forest floor, and drink water from nearby freshwater sources. Identify one
asked by mackenzie 
Physics
A positive charge moving up enters a magnetic field pointing out of the screen. What is the direction of the magnetic force on the charge? up down right left
asked by Anonymous 
Physics
A wire runs left to right and carries a current in the direction shown. What is the direction of the magnetic field at point Z?
asked by Anonymous 
calculus
Find dy/dx by implicit differentiation. arctan(2x^2y)=x+4xy^2
asked by christina 
Science
Compare lunar and solar eclipses and answer the following questions: How does a lunar eclipse happen? How does a solar eclipse happen? Which one occurs more often?
asked by Help I need somebody not just anybody 
Statistics
Consider a t distribution with 30 degrees of freedom. Compute P(t "greater than or equal to" 1.50). Round your answer to at least three decimal places. Consider a t distribution with 6 degrees of freedom. Find the value of c such that P(c
asked by Mariah 
Math  Geometry!!!
What shape is created if you connect the following points: (1,1), (5,1),(7,3), and (3,3)?
asked by Luca Gonzalez 
English
Like the modernists, postmodern writers focused on subjective experience rather than objective cultural norms.
asked by Shawn 
Math
what is the surface area of the rectangular prism? length: 21.5mm height: 5mm Width: 4mm A. 480MM^2 B. 427MM^2**** C. 213.5MM^2 D. 255MM^2
asked by BlueFire 
algebra
peter is twice as old as paul was when peter was as old as paul is now. the combined ages of peter and paul is is 56 years. how old are peter and paul now?
asked by roy 
Language Arts
1. Which of the following sentences has correct subjectverb agreement? A. A scarf or a hat keep you warm in the winter. B. Either Grandma or your brother pick your birthday gifts each year. C. Stacey and her sisters go to the beach every summer.** D. A
asked by Anonymous 
Language Arts
The Tide Rises, the Tide Falls by Henry Wadsworth Longfellow The tide rises, the tide falls, The twilight darkens, the curlew calls; Along the seasands damp and brown The traveller hastens toward the town, And the tide rises, the tide falls. Darkness
asked by Anonymous 
math
in cooking 1 drop equal 1/6 of a dash. if a recipe calls for 2/3 of a dash, how many drops would that be.
asked by Anonymous 
Seventh grade math
The area of a square floor on a scale drawing is 64 square centimeters, and the scale drawing is 1 centimeter:2 ft. What is the area of the actual floor? What is the ratio of the area in the drawing to the actual area? I have been trying to answer this
asked by Braylynn 
Chemistry
Which equation would describe the following equilibrium constant? Kc = [Bi3+]2[S2]3  Bi2S3 (s) 2Bi3+ (aq) + 3S2 (aq) Bi2S3 (s) + 6HCl (aq) 2BiCl3 (aq) + 3H2S (aq) BiS (s) Bi3+ (aq) + S2 (aq) Bi2S3 (s) 3Bi2+ (aq) + 2S (aq)
asked by nonny 
Maths
Dennis score 7.5mark in a test and it is equivalent to 93.75%.what is the total marks for the test?
asked by Razah 
Math
The difference between two numbers is 21. If twice the smaller number is added to onehalf of the larger number, the result is 38. What are the numbers?
asked by Jeanine 
math
The sum of two numbers is equal to 63 and their difference is equal to 12. Find the numbers.
asked by annie 
Statistics
I am confused by the following and need some help You want to find the values for the equation ŷi=a+bxi. What is the value of the slope? time spent on Bookface predictor variable, time spent working is the response variable. correlation between minutes
asked by claire 
chemistry
Calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10 M Na2CO3. (Ka = 4.3 x107)
asked by Anonymous 
Math
Simplify 5! A.5 B.15 C.120 D.125
asked by Wally West 
geometry
Let the incircle of triangle $ABC$ be tangent to sides $\overline{BC}$, $\overline{AC}$, and $\overline{AB}$ at $D$, $E$, and $F$, respectively. Prove that triangle $DEF$ is acute. I have tried proving that triangle DEF's angles were les than the opposite
asked by Aaa 
Algebra
Consider the following matrix. A = 7, 5 4, 3 Choose the correct description of A Find A^−1 if it exists. Answer either Choice 1, or Choice 2: CHOICE 1: A is nonsingular; that is, it has an inverse. A^1 = _________ or CHOICE 2 : A is singular; that is,
asked by Shelby 
English
1. Write about you and introduce yourself taking turns in groups. 2. Write about yourself and introduce yourself taking turns in groups.  Do we have to use 'you' or 'yourself' after 'about'?
asked by rfvv 
Math
A container has capacity of 2/3. It is filled 3/4. How many liters of water will be left in the container after 1/6 liter is poured out? I have no idea how to do this problem! Please help guide me through this math problem! Thank You!
asked by Stargirl 
Math
whats the decimal notation for seventy seven thousandths
asked by Brandon Terry 
Math
2 + 6+ 10+ 14 + 18 + 22 + 26+ 30+ 34 + 38 = 200 To inme se kisi 5 ko Total kar ke 100 banaao.!
asked by Anonymous Calculus 
Algebra
John will be half of the father's age his father will be 33 next year, how old will John be
asked by Daniel 
Algebra
In 4 years time John will be half of the father's age his father will be 33 next year, how old will John be
asked by Daniel 
English
Like the modernists, postmodern writers focused on subjective experience rather objective cultural norms A: Expressing or dealing with facts or condition as perceived without distortion by personal feelings prejudices or interpretations** B: Characteristic
asked by Shawn 
Math
The oldest man in the world is 110 years old . If his younger brother is 9/10 of his age how old is his younger brother?
asked by Sky 
Spanish
What can visitors see at the Canaima National Park?
asked by I'm a Queen 
English
1. I have two dance classes on Monday. 2. I have two dancing classes on Monday. (which one is correct as a subject, dance or dancing?)
asked by rfvv 
Math
What is half of 4 and 4 1/2
asked by Anonymous 
Social studies
why was the americans attack on manila harbor in the philippines important for a quick american victory in the spanish american war? The United States relied on war supplies from Asia and securing the Philippines protected those.••• The United States
asked by Mackenzie 
economics
Explain why we might be concerned about the potential for the misrepresentation of costs.
asked by annoymous 
Last math question of the night plz help quickly!
Find the domain and ranges of the following: f(x)=(2/3)x3 f(x)=3x+7 Thank you in advance, this helps me a lot because I really suck at finding domain/range and it's super late rn.
asked by help! 
Food analysis
How to prepare 0.5m of hcl
asked by Ogbonna 
physical science
a cars radio draws 0.25 A of current in the autos 12 volt electrical system. How much power in watts does the radio use?
asked by fred 
chemistry
when hcl reacts with mg, how many grams of magnesium are needed to produce 100 grams of hydrogen?
asked by tehreem 
Physics
The magnetic field 0.02 m from a wire is 0.1 T. What is the magnitude of the magnetic field 0.01 m from the same wire?
asked by Anonymous 
English
doing research on a report for how study scheduling apps can help students. the apps i have chosen are evernote, my study life and my homework. The info i need is how these apps can benefit students and how they can actually help and how they coorelate to
asked by Ria 
Math
A rectangular field has side lengths of 2/3 mile and 3/4 mile. What is the area of the field.
asked by Jac 
Physics
What must be known to determine the direction of the magnetic force on a charge? the type of the charge the amount of the charge the direction of the magnetic field the velocity of the charge the strength of the magnetic field
asked by Anonymous 
Chemistry
Determine the pH of a solution after 20.00 mL of 0.4963 M HI has been titrated with 12.64 mL of 0.5174 M NaOH.
asked by Sarah 
PHYSICS
a stone of mass 0.5kg is drop from a height of 12m. calculate; it's kinetic energy. (g=10m/s2).
asked by GLORY 
english
Who am I? I am a national builder My favourite letter is K My favourite food is Japanese
asked by peter 
maths
OPQR is a rhombus , three of whose vertices lie on a circle with centre O.If the area of the rhombus is 32 root 3cm square ,find the radius of the circle
asked by Manish 
maths
ABCD is a parallelogram and AE perpendicular to DC if AB is 20cm. and the area of parallelogram is 80cm. then find the AE which is 90degree?
asked by honey 
Social studies
The MacdonaldCartier bridge that stretches the Ottawa River and connects Ontario to Quebec is named for two Canadian politicians, one ______ and one _______. A)English, German B)Inuktitut, French C)French, Cree D)English, French
asked by Alyssa 
Math
How much must be deposited today into the following account in order to have$120000 in 14 years ? No additional deposits are made. An account with quarterly compounding and an APR of 7.4% ?
asked by Debra 
Maths
Peter deposit k180,600.00 with BSP which offers 6 1/4% per annum interest. Calculate the interest earned after 6 years if it is compounded:
asked by Regina 
Math
If I earn £200 a week,the tax man takes 3/8 of it and I pay my mum 1/2 of my earnings for rent , how much do I end up having to spend on things I want?
asked by Mark 
algebra
An object is thrown straight up into the air at an initial vertical velocity of 32 feet per second from an initial height of 128 feet and is represented by the vertical motion model, h(t) = 16t^2 + 32t + 128. How much time does it take for the object to
asked by Jo 
Social Studies
Question 1 (1 point) How have residents of Canada's eastern coast dealt with changes in the fishing industry? a They have banned aquaculture. b They concentrated on other economic activities. c They have completely given up fishing. d They only fish for
asked by Savannah 
5th grade math
Rachel has a box of cupcakes that she wants to share equally with her 5 friends. Write an expression to represent the problem.
asked by Douglas 
math
A boy draw the frame of a picture to a scale of 1cm to 15cm.if his drawing has 5cm length and 3cm as breath, what is the actual length and breath of the picture?
asked by Ene 
Integral Calculus
How to determine the order and degree of this differential equation, (y''')^22(y')^6=x2
asked by Liv 
physics
A kg construction worker is standing on an 18.0 kg plank. The plank is m long and it is suspended by vertical cables at each end. If the worker stands 2.80 from the right end of the plank, what is the tension in right cable? Give your answer in newtons (N)
asked by Idali 
algebra
The average speed of an express train is 20km/hour more than the average speed of a passenger train .To cover a distance of 360kms the express train takes 3 hours less than that of the passenger train. Find the average speed of both passenger and express
asked by chinnu 
Maths
Peter deposit k180600 with bsp which offers 6 1/4% per annum interest. Calculate the interest earned after 6 years if it is compounded:
asked by Regina 
Math Help!
On your birthday, you deposit $540.00 in an account that pays 6% interest, compounded annually. How much is in the account 3 years later? (1 point) • $637.20 • $543.18 • $643.15*** • $1,717.20
asked by Agala 
Maths
Peter deposit k180600 with bsp which offers 6 1/4% per annum interest. Calculate the Interest earned after 6 years if it is compounded:
asked by Razah 
Science
If 5 equal pieces of 25 ohm (omega) is joined in parallel then what is the equivalent resistance of it. Is it 5 or 1.please urgent
asked by Sanjay 
Linear Algebra
I need help for the Linear Algebra B Unit 2 test. Please help. 1. For the data in the table does Y vary directly with X? If it does, write and equation for the direct variation. l X l Y l l 10 l 15 l l 16 l 24 l l 20 l 30 l A Yes: Y=1.5X B Yes: Y=2x C
asked by Noone 
Maths
How much money would I need to invest for 8 years at 6 1/4% simple interest to earn k500?
asked by Razah 
physicslenses
A converging lens of focal length 4.3 m produces a magnified image 6.7 times the size of the object. What is the object distance if the image is real? virtual? pleasse help!
asked by eliz 
Maths
Having invested k12000.00 into fixed deposit account for 5 years,i received k1850.00 what was the simple interest rate?
asked by Razah 
physicslenses
A converging lens f1=10cm, is placed 25cm to the left of a diverging lens, f2=−15cm. An object is placed 22cm to the left of the converging lens. Locate the final image... in cm and its magnification. I'm not sure how to approach this problem, or the
asked by eliz 
Mink high school MatheMatics
Peter deposit k180600 with bsp which offers 6 1/4%per annum interest. Calculate the interest earned After 6years if it is compounded:
asked by Regina 
physicslenses
What eyeglasses would you prescribe for persons with the following conditions: a) A near point of 49.8cm ? b) A far point of 49.8cm ?
asked by eliz 
Math  Trigonometry
When calculating the lengths for a square based pyramid, is there a way to calculate the length from a point to the point opposite of it, given the side length and height? Thanks in advanced.
asked by Anonymous 
economics
why we might be concerned about the potential for the misrepresentation of costs.
asked by annoymous 
science
An object 4.0cm in height is placed at a 25cm from a concave mirror of focal length 15cm.find the position, nature, and size of image formed.
asked by seerat 
Algebra
6. List of all the Quadrilaterals with exactly one pair of Parallel sides. A. Parallelogram; Trapezoid B. Rhombus; Parallelogram; Rectangle C. trapezoid D Rhombus; Square; Rectangle I wanna say its B but I'm not sure :/ I haven't really got a 100%
asked by Random Emo Girl 
Algebra
A $4,000 principal is invested in two accounts, one earning 3% interest and another earning 4% interest. If the total interest for the year is $126, then how much is invested in each account?
asked by J 
Math  Trigonometry
The diagonal of a rectangle of width 3.8, makes an angle of 32° 15' with each of the longer sides. Find the length of the diagonal, and the length of the rectangle. Im not sure how to picture/draw the shape, which in term will tell me if it is cos, sin or
asked by Anonymous 
Math  Trigonometry
Standing on top of a building 42 m high, an observer sights two objects at P and Q on opposite sides of the building. The angles of depression from the observer to P and Q are 23° 18' and 35° 33' respectively. What is the distance between P and Q to the
asked by Anonymous 
Basic Math
Surface area of a square pyramid 11in 13in and 9in 11 height 13 side? 9 base edge I keep getting the wrong answer its not 328.62 or 294.93 Square area of a cone 15 side? 12 height 6 base It's not 365.99 or 417.62 I don't need anything rounded...help
asked by Sally 
Math
Sorry for posting twice I have to round 7276.74 by two decimal places but I keep getting it wrong...
asked by Sally 
History
Identify two factors that led to Hitler launching the Battle of Britain. A.the surrender of France, B.an American policy of isolationism, C.the Munich Conference, D.a German alliance with Italy. I think it is d and c, but I'm not too sure.
asked by Evan 
Math
Surface area of a square pyramid 11in 13in and 9in 11 height 13 slant height 9 base edge I keep getting the wrong answer its not 328.62 or 294.93 Square area of a cone 15 slant height 12 height 6 base
asked by Sally 
Calculus/Optimisation
A real estate manages 80 apartment units. When the rent of each unit is $180 per month, all units are occupied. However, for each $6 increase in rent, one of the units becomes vacant. Each occupied unit requires an average of $18 per month for service and
asked by Monica 
Algebra
If 70 is added to a number the result is 40 less than 3 times the number find the number
asked by Caleb 
Language Arts
1. what is the best way to correct the error in this sentence? Neither Tim nor Kristina go to the movies often A.delete the conjunction B.Change go to attend C.Change the verb to goes** D.Change neither to either 2. Which sentence below contains a
asked by Anonymous 
Math
A car today costs $32000. Assume that the average annual rate of growth per year was 5.83% over the last 45 years to answer the following question. Round all answers to the nearest whole dollar. How much would the same value of car have cost 45 years ago
asked by Tyreice 
Math
Professor Smith has invented a time machine and is going to travel back in time 15 years to buy his wife a diamond ring. The ring cost $5000, 15 years ago . The average rate of inflation is 3.09% per year. Round answers to nearest whole $. How much money
asked by Tyreice 
Calculus/Optimisation
A skateboarded decides to jump off a ramp. The path of the jump from the ramp can be approximated by: h = 3t^2 + 6t + 1 Where h is the height above the ground in meters, s is the horizontal displacement and t is the time after leaving the ramp in seconds.
asked by Monica 
Math
7m long flagstaff is fixed on tower standing on horizontal plain . Frm a point on the ground angle of elevation of top and bottom of flag staff are 60 and 40 find height of tower
asked by Anonymous 
Algebra
Difference of two ninbers is 5 and difference of thier reciprocal is 1/10 find the numbers. Answer: XY=5 X=Y+5 1/X  1/Y = 10 1/Y+5  1/Y =10 LCM ....
asked by Anonymous 
Math, Induction
prove by induction that 3.7^(2n)+1 is divisible by 4
asked by Majeed 
Help Polynomial
A polynomial P(x) has remainder R x +S on division by (xa) (xb). If a is not equal to b, express the constants R and S in terms of a, b, P(a), P(b). Find the remainder when P(x) is divided by (xa)^2.
asked by youngguru 
Math
A bank advertises a savings account that earns 3% APR compounded daily. What is the "n" become for the compound interest formula?
asked by Tyreice 
Physics
If a Wire Resistance is 10 ohm at 0 DegC and the same wire Resistance becomes 15 ohm at temperature 100 DegC, then at what temperature the wire Resistance will be 30 ohm? Temperature coefficient of the wire material is 0.0047.
asked by SIDDHARTHA 
English
Which of the following lines from a&p illustrates updikes use of conflict A. the whole store was like a pinball and I didn't know which one they'd come out of. B. you could see the, when Queenie's white shoulders dawned on then, kind of move, or hop, or
asked by steve 
state & local government
1. Why have the powers of the governor increased in modern times?
asked by liz 
Maths
Sophie borrowed $2000 at a simple interest rate of 15% for 3 years to repay the loan and has $900 in interest. If Sophie's interest was calculated at the same rate on the balance owing, how much would she have owed after 6 months if she repaid $40 per
asked by Lara