Questions Asked on
May 7, 2017

Statistics
Find the probability of getting a prime number thrice by tossing a die 10 times.
asked by Barney 
Chemistry
What volume of 0.200 M K2C2O4 is required to completely react with 30.0 mL of 0.100 M Fe(NO3)3? 2Fe(NO3)3 + 3K2C2O4 > Fe2(C2O4)3 + 6KNO3
asked by Anonymous 
Trig Help Please
A smokestack is 200 ft high. A guy wire must be fastened to the stack 30.0 ft from the top. The guy wire makes an angle of 42.0° with the ground. Find the length of the guy wire.
asked by Samantha 
trigonometry
Rewrite 4sin(x)5cos(x) as Asin(x+phi)
asked by Anonymous 
Chem
Using this redox equation: Mn(OH)2(s) + MnO4(aq) → MnO42(aq) When the equation is balanced with smallest whole number coefficients, what is the coefficient for OH(aq) and on which side is it present? I think its 4 and on the reactant side but i
asked by Addam 
Chemistry
How many grams of copper are deposited on the cathode of an electrolytic cell if an electric current of 2.00 A is passed through a solution of CuSO4 for a period of 19.0 min?
asked by Durbin23 
Chemistry
Which of the following statements is not true of nuclear fusion? A. It involves the joining of two atoms together into one new atom. B. It occurs in the sun and other stars. C. It only occurs in very large, heavy atoms. D. It releases very large amounts of
asked by Ari 
algebra
am I right? 1. Simplify radical expression sqrt 50 5 sqrt ^2*** 2 sqrt ^5 5 sqrt ^10 5 2. Simplify the radical expression sqrt 56x^2 28x 2x sqrt 14*** 2x sqrt 7 sqrt 14x2 3. Simplify the radical expression. sqrt 490y^5w^6 2 sqrt 135y^2 2y sqrt 135*** 27
asked by Carl Wheezer 
finance
Find the final amount in the following retirement account, in which the rate of return on the account and the regular contribution change over time. $470 per month invested at 5%, compounded monthly, for 7 years; then $709 per month invested at 7%,
asked by un 
Chemistry
An unknown metal, m, forms an ionic compound with the formula, M2S3. Which formula represents the compound formed by the metal with oxygen? a) MO b) MO2 c) MO3 d) M2O3
asked by Anonymous 
Chemistry
What is the empirical formula for a compound of sodium and oxygen that contains 59% by mass? I am guessing it would be NaO because the molar mass of Na is 22.99 g/mol and 22.99 g/mol Na / 22.99 + 16 is approx 59%. Just wanted to make sure that is correct.
asked by Anonymous 
Science
Four equal point charge each of 16microcoulomb are placed on the four corners of a square of side 0.2m.calculate the force on any one of the charge
asked by Tavishi 
Chemistry
Which electron transition in a hydrogen atom will emit a photon with the longest wavelength? n = 2 to n = 1 n = 3 to n = 1 n = 1 to n = 2 n = 1 to n = 3 I would assume it would be a short electron transition since energy and wavelength are inversely
asked by Anonymous 
calculus
Consider the curve deﬁned by the equation y = 4x^3 +3x. Set up an integral that represents the length of curve from the point (0,0) to the point (4,268).
asked by Sam 
Chemistry
When a solution of a certain gadolinium salt is electrolyzed with a current of 1.0 A for 2.0 h, 0.025 mol of Gd metal forms. Calculate the charge on the gadolinium ion in the salt.
asked by Durbin23 
Chemistry
A 10.000 g sample of water contains 11.19% H by mass. What would by the %H in a 20.000 g sample of water? I got 22.38%, would that be correct?
asked by Anonymous 
math
My hundreds place is twice the lakh place
asked by rajdeep 
Chemistry
Calculate the mole fraction of ethanol in 95% by mass aqueous solution.Mol. mass of ethanol is 46.
asked by Simar 
Business
Custody is defined by the Supreme Court as happening when: A. A person has been taken into "custody." B. A person has been formally arrested. C. A person has been derived of his freedom of action in any significant way. D. All of the above.
asked by Hai 
Trig
A conveyor is used to lift paper to a shredder. The most efficient operating angle of elevation for the conveyor is 35.2°. The paper is to be elevated 16.0 m. What length of conveyor is needed?
asked by Samantha 
chemistry
Are these physical property's of a pure compound? What are physical properts off this list???? molar weight reactivity with halogens volatility melting and boiling points hardness, brittleness odor density air sensitivity flammability radioactivity colour
asked by Cee 
Chemistry
Which of the changes are chemical changes? a) Sugar crystals are ground to a fine powder. b) A candle is burned c) Two clear colorless salt solutions are mixed and a bright orange precipitate forms. d) Candle wax is melted e) A silver teapot turns black
asked by Lee 
calculus
If x = 18cos^3θ and y = 18sin^3θ, ﬁnd the total length of the curve swept out by the point (x,y) as θ ranges from 0 to 2π.
asked by Sam 
Chemistry
Given the following standard reduction potentials in acid solution write the formula of the weakest reducing agent.
asked by Durbin23 
English
What are the overall effectiveness of the speech "Pearson’s address on the inauguration of the national flag of Canada" What are his persuasive goal and what arguments he uses to achieve his purpose?
asked by Nikita 
Chemistry
What mass of NO2 is formed by the complete reaction of 2 mol O3 with excess NO in the reaction? O3 + NO > O2 + NO2 I know the molar mass of O3 is 48 g/mol and NO2 46 g/mol a) 23.0 g b) 46.0 g c) 92.0 g d) 96.0 g
asked by Anonymous 
Chemistry
What is the net ionic equation form the reaction between Na2S(aq) and Pb(HCO3)2(aq)? Just wanting to make sure this correct: 2Na+(aq) + S2(aq) + Pb2+(aq) + 2HCO3(aq) > 2Na+(aq) + 2HCO3(aq) + PbS(s)
asked by Anonymous 
Chemistry
Which element is oxidized and which element is reduced in this redox reaction? CO2(g) + H2(g) > 2CO2(g) + H2O(g) Is Oxygen oxidized and hydrogen reduced?
asked by Anonymous 
Algebra
Bernie has $16000 invested, part at 3% and the remainder at 5%. If the yearly interest on each investment is the same, how much interest does he receive each year?
asked by Leo 
CHECK my answers Physical science
1. which of the following should be classified as a suspension? A. soda** B. sand in water C. glass D. milk 2. Which of the following is an of example of a chemical property? A. density B. flammability C. hardness** D. melting point 3. Which state of
asked by anon 
Algebra
A homeowner wants to enclose a rectangular piece of land beside a river. He must put a fence on 3 sides of the field (the river forms the fourth side). The field has length L (which runs parallel to the river) and width W. The homeowner has 200 yards of
asked by Olivia 
algebra
A tower 25 meters tall casts a shadow 20.8 meters long. What is the distance from the top of the tower to the end of the shadow?
asked by Allen 
chemistry
"What mass of silicon carbide should result when 100.00g of silicon dioxide reacts with excess 100.00g of carbon?" SiO2 + 3 C = 2 CO + SiC (balanced) Direct question from homework; I was wondering if someone could explain how to find the solution with
asked by h. marie 
Chemistry
When a radioactive isotope releases a beta particle, the atomic number of the new element is A. decreased by one. B. decreased by two. C. increased by one. D. increased by two.
asked by Ari 
Psychology
Miranda is a 23 yearold female who presents with symptoms of anxiety. She is dressed in baggy clothes and appears to be very thin. Miranda states that she worries a lot about her weight. Her father is obese, and she says that she does not want “to end
asked by Amanda 
math
Joe went school supply shopping. He spent $22.50 on notebooks and pencils. Notebooks cost $2.00 and pencils cost $0.50. He brought a total of notebooks and pencils. How many pencils did he buy? What i did n+p=15 0.50n+2.00p=22.50 i dont know who to do so
asked by Garhl 
trigonometry
8sin^2(x)+6sin(x)9=0 simplify
asked by frances 
physics
the rate at which radiant energy from the sun reaches the earth's upper atmosphere is about 1.50kW/m2. the distance from the earth to the sun is 1.50*10^11m, and the radius of the sun is 6.96 * 10^8m. if the sun radiates as an ideal black body (e=1), what
asked by jean 
stats
Consumer Reports rated airlines and found that 80% of the flights involved in the study arrived on time (that is within 15 minutes of scheduled arrival time). Assuming that the ontime arrival rate is representative of the entire commercial airline
asked by Mary 
Biology
A dichotomous key is used to ___________. ? A. identify dicots, only B. identify organisms C. gain entry to homes by burglars D. determine the meaning of life ' my best answer is B is that correct
asked by Cassandra 
Maths
Ryan's car get 35.7 miles per gallon on the highway His fuel tank holds 12.64 gallons then how far can he travel on one full tank of gas.Round to the nearest mile
asked by Dawn 
Algebra
A+B
asked by Anthony 
Business
If an incourt identification is influenced by an outofcourt identification, it is called a(n): a. tainted identification. b.flawed identification. c.unreliable identification. d.improper identification.
asked by Hai 
Maths
round off 451.248 to the nearest mile
asked by Dawn 
Calculus
Compute the absolute and relative errors in using x to approximate x. x=pi; c=3.18
asked by Jahaira 
science
Juggle and bangles are clowns.juggles stands on one end of a teeterRitter at rest on the ground.bangles jumps off a platform 2.5m above the ground and lands on the other end of the teetertotter,launching juggles into the air.juggles rises to a height of
asked by mbali 
chemistry
When the equation: Al(s) + HSO4(aq) + OH(aq) → Al2O3(s) + S2(aq) + H2O(l) is balanced with smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______.
asked by John Butch 
math
graphic pairs function in the same set of axis (1 quadrant) g(x)=3/7x+6&h(x)=3/73
asked by sai 
Chemistry
After balancing the following redox equation(using small wholenumber coefficients), add the coefficients of all species in the balanced equation. Bi(OH)3 + SnO2^(2) → Bi + SnO3^(2) (basic solution)  I separated the equation into two and i know the
asked by Lucy 
Writing skills
When, for example you can't spell a word. How do you look up the correct spilling? (1) word. How (2) word, how (3) word how (4) word; how (5) word or how I pick # 2 is this right
asked by MyDogbear12 bear 
math
The bases of a right prism are parallelograms with sides a=10 cm, b=6 cm, and altitude of the parallelogram towards side a, ha = 3 cm. Find the surface area of the parallelogram, if the height of the prism is h=12 cm.
asked by M 
Chemistry
Which response presents ions in order of increasing atomic radius? a) smallest Cl, K+, Na+ largest b) smallest Cl, Na+, K+ largest c) smallest K+, Na+, Cl largest d) smallest Na+, K+, Cl largest I would assume the answer would be D since the electrons
asked by Anonymous 
Science
In what fields would a lab technician need to separate & identify organic items? I looked it up and it said organic chemistry, forensics.. . I'm not which one because couldn't it range?
asked by Julia 
Social Studies Business
1. If a consumer makes monthly payments of $250 to pay off a car loan, what type of credit is she using? A) NonRevolving B) Revolving C) Short Term D) Unsecured 2. Caitlin wants to buy an airline ticket, but she's uncomfortable taking that much cash to
asked by Reeses 
Chemistry
How much heat is absorbed when a 35.0 g aluminum block increases in temperature from 23°C to 33°C? Specific heat of Al: 0.900 J*g1*°C1 q=msΔT q=(35.0 g)(.900)(33°C  23°C) q= 315 J? Just making sure there isn't anything that I am missing.
asked by Anonymous 
Educational thechnonolgy
Lines are used in a design to _____.Choose all that apply. A.Create movement B.lead the eye across the page C.describe the relationship between certain colors D.divide a page into sections
asked by Kaitlyn 
Gr 12 Data
Sarah tosses 5 coins, one after the other. a) How many different outcomes are possible? b) Draw a tree diagram to illustrate the different possibilities. c) In how many ways will the first coin turn up heads and the last coin turn up tails? d) In how many
asked by Jeff 
Chemistry
How many grams of chromium could be deposited on a bracelet using 0.180 A of electricity for 4.65 hours
asked by Deborah 
Writing skills
It is just as exasperating when you discover the definition of '' evocation '' is ''the act or fact of evoking'' If you rewrote sentence 4 beginning with. Nor are you. The next words should be (1). Just as exasperated (2) exasperated any lesser (3) any
asked by Mydogbear 
Writing skills
When you are told time after time that there are no jobs. And it is time for some creative thinking and acting. (1) jobs, or it (2) jobs, it (3) jobs, if it I pick #3
asked by Mydogbear 
Maths
When traveling b/w two towns the time taken varies inversely with the average speed when average is 42km/hour the journey takes 2hours20minute
asked by Michael purity 
Writing skills
It is just as exasperating when you discover the definition of '' evocation '' is '' the act or fact of evoking'' If you rewrote sentence 4 beginning with. Nor are you The next words should be (1) just as exasperated (2) exasperated any lesser (3) any less
asked by Mydogbear 
Writing skills
One of the approaches taken by these psychologists has been to investigate the foundation for a happy marriage. Which of the following is the best way to write the underline portion of this sentence? If you think the original is the best way, choose option
asked by Mydogbear 
Math (Integrals) (Using given method)
∫sin(x)cos(x) dx Using the identity sin(2x) = 2 sin(x) cos(x)?
asked by Ray 
Math
Solve and graph the following inequality: m/5+8>10
asked by Maddie 
maths
Given an equation of circle(x2)2+(y3)2=25,find the equation of the image circle after a reflection about the line y=x+3
asked by girmay 
calculus
from a cardboard box 12 in by 8 inches are cut out so the sides can be folded up to make a box . What dimentions will yield a maximum volume? What is maximum volume? we got our V = 4x^340x^2+96x V'=12x^280x +96 then we know to use quadratic equation I
asked by kim 
Trig
Is a triangle that has sides which measure 8, 15, and 17 a right triangle? Justify your answer, ie,
asked by Samantha 
Trig
Right triangle PQR with the right angle at Q has one side measuring 46 feet and the hypotenuse measuring 54 feet. Find the other side as a radical in simplified radical form and to the nearest tenth.
asked by Samantha 
Algebra
Right triangle ABC has the right angle at C. Angle B is 18.5° and side a is 17.9 centimeters.Find the length of the hypotenuse.
asked by Steve 
Math
A bag contains 10 yellow chips and 10 red chips what is the probability of that sara will pick a yellow chip keep it and then draw a red chip on her second draw
asked by Joe Furr 
Calculus
At what point is the function y=csc(2x) continuous?
asked by Mike 
health, science
How can I explain Lung cancer to children? I don't know how to explain in easy words. "Lung cancer is the uncontrolled growth of abnormal cells in the tissues of the lungs. If not treated, lung cancer may spread to the surrounding tissues and other parts
asked by apple 
Algebra
Simplify each polynomial. 6g + 8k  9g + 2k
asked by Mo 
Interpreting literature and the arts
I remember mama Mama understands that that Jenny and Sigurd (1) are concerned about Trina's welfare (2) don't want Trina to become an old maid (3) want to feel superior to Trina (4) want Trina to be happily married (5) aren't interested in Trina's news I
asked by Mydogbear 
Calculus
A rectangular page is to contain 8 square inches of print. The margins at the top and bottom of the page are to be 2 inches wide. The margins on each side are to be 1 inch wide. Find the dimensions of the page that will minimize the amount of paper used.
asked by Bianca 
math
Marvin has a box containing apples and oranges. *There are a total of 100 apples and oranges in the box. *The number of apples in the box is 16 more than the number of oranges How many apples are in the same box? Answer: Its a system of equation so a+o=100
asked by Garhl 
Maths
A man walks for 9km in the direction 246 degrees and then for 6km in the direction 096 degrees. Questions;1. Find his displacement from his starting point. And 2. Illustrate the information above in a diagram.
asked by Terence 
Chemistry
Which compound has the highest lattice energy? a) CaO b) LiF c) MgO d) NaF I am guessing B because Lithium has the lowest energy level?
asked by Anonymous 
Stat
4 different letters are dropped on the floor and then inserted into four differently addressed envelopes. Find the probability that exactly 2 letters are inserted into the proper envelope.
asked by James 
AVID (elective)
Hi! I have 2 questions. Teacher told me that I have to answer each question by an essay. But please just give me only 4 sentences if that's alright. 1. How does booker t. washington ideas in UP in slavery and avid's mission similar? 2. What are the similar
asked by Minny 
Physics
The spring of force constant k = 400 N/m is set up horizontally with a 0.300 kg mass attached on it resting on a frictionless table. The mass is pulled so that the spring is stretched 0.100 m from the equilibrium point, and is then released from rest.
asked by HIyas 
physics
Suppose a tank contains 714 m3 of neon (Ne) at an absolute pressure of 1.01×10^5 Pa. The temperature is changed from 293.2 to 294.7 K. What is the increase in the internal energy of the neon?
asked by tina 
calculus
Find the length of the curve deﬁned by the parametric equations x = 2/3t, y = 2ln((t/3)^2−1) from t =6 to t =7.
asked by Sam 
essay edit help
I looked around to see the Munchkins desperately running away, they screamed and rushed into their homes. The summer sun felt hot on my skin. “I thought you said she was dead” said a girl I’ve never seen before, “that was her sister the Wicked
asked by kpop bois 
Reasoning
Deborah's father is twice as old she is now.if their ages add up to 45 years how old is Deborah.
asked by Maria 
physics
a stone is thrown vertically upward with an intial velovity of 12m/s, after some time it returns to the same position a)what is the displacement of the stone b)the highest point it reached if it took 2 seconds for the stone to reach this point c)the
asked by chibwe 
math
my watch is twelve minutes slow .the bus for which I am waiting should have arrived at 3.49pm but it is five minutes late. What time would my watch show when the bus arrives?
asked by sara 
precal vocabulary
What is the vocabulary word for the direction of a curve when points are plotted in the order of increasing values of t? What is the vocabulary word for the form of the equation of a graph using a pair of parametric equations?
asked by jasmin 
Business
Custody is defined by the Supreme Court as happening when: A person has been taken into "custody". A person has been formally arrested. A person has been deprived of his freedom of action in any significant way. All of the above.
asked by Hai 
math
if log a= x and log b = y, then what is 1/3 log (ab)^3？
asked by yuna 
English
a sense of fear gushed throughout my body does it make sense?
asked by Anonymous