Questions Asked on
November 20, 2012

Algebra 2 help :)
Any number in the form of a+bi , where a and b are real numbers and b not equal 0 is considered a pure imaginary number. TRUE OR FALSE The minimum value is the smallest yvalue of a function. T RUE OR FALSE i2 = square root of 1. TRUE OR FALSE Complex
asked by Robert 
Probability please help!
The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a fivedigit number. What is the probability that the resulting number is divisible by 4? Express your answer as a common fraction.
asked by SuckatProb 
English
I not real understand this poem Wordsmith by Susan Young In my mind I call my father the Pollyfilla king, watch with something akin to awe as he begins the arduous process of filling in the gaps, the long winded cracks that travel down the walls of my
asked by Mohammad 
probability question  help!
Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minutes after when they arrive. What is
asked by mathfailure 
geometry
The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. The front two wheels are six feet apart. What is the number of feet in the path traced by the inside front wheel in one trip around the circle? Express
asked by mathfailure 
PHYSICS
while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.0 m north, 250 m east, 125 m at an angle theta equal to 30.0 north of east, and 150 m south. find her resultant displacement
asked by JOAN 
university physics
A platinum resistance thermometer has resistances of 200.0 ohms when placed in a 0 degrees Celsius ice bath and 253.8 ohms when immersed in a crucible contacting melting potassium. What is the melting point of potassium? Hint: First determine the
asked by Ella 
Physics
The Alert Hiker: An alert hiker sees a boulder fall from the top of a distant cliff and notes that it takes 1.3s for the boulder to fall the last third of the way to the ground. a.What is the height of the cliff in meters? b.If in part (a) you get two
asked by Zalak 
physics
A train travels at a constant speed around a curve of radius 225 m. A ceiling lamp at the end of a light cord swings out to an angle of 20.0º throughout the turn. Draw a free body diagram? What is the speed of the train?
asked by Courtney 
statistics
Entry to a certain University is determined by a national test. The scores on this test are normally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to this university and he knows that he must score better than 70%
asked by Michelle 
Physics
The Flower Pot: A flower pot falls off a windowsill and falls past the window below. It takes .3 s to travel from the top of the window to the bottom of the window which is 2.2 m tall. From what height above the top of the window did the flower pot fall?
asked by Zalak 
chemistry
At elevated temperatures, sodium chlorate decomposes to produce sodium chloride and oxygen gas. A 0.8915g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen gas collected over water occupied 57.2 mL at a
asked by Fred 
Maths
An ant is crawling along the xaxis such that the graph of its position on the xaxis versus time is a semicircle. The total distance covered in the 4 sec is 1. 4 m 2. 2 m 3. 2 pie m 4. 4 pie m
asked by Parag 
Chemistry
A meteorological balloon had a radius of 1.1 m when released at sea level at 20◦C. It ex panded to a radius of 5 m when it had risen to its maximum altitude, where the temperature was −20◦C. What was the pressure inside the balloon at that altitude?
asked by Caitlin 
math
Beth Dahlke is taking a ten question multiple choice test for which each question has three answer choice only one of which is correct. Beth decides on answers by rolling a fair die and making the first answer choice if the die shows 1 or 2 the second if
asked by Andrew 
Physics
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85x10^5 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28X10^5 Pa and the pipe
asked by Chelsea 
physics
a 100N force is applied at an angle of 30 degrees horizontal to move a 15kg object at a constant speed for a horizontal distance of 5m what would the work be
asked by Layne 
physics
The pendulum on a cuckoo clock is 5.00 cm long. (a) Determine the period of this pendulum. (b) What is its frequency?
asked by Jason 
Chem
Calculate the amount of grams of carbon dioxide formed from 100 g of octane. The molar mass of octane is 114.33 g/mole. The molar mass of carbon dioxide is 44.0095 g/mole/ 2 C8H18 + 25 O2 > 16 CO2 + 18 H20 How do I go about doing this problem? How much
asked by Danya 
finance
You take out a 25year $210,000 mortgage loan with an APR of 12% and monthly payments. In 16 years you decide to sell your house and pay off the mortgage. What is the principal balance on the loan?
asked by Anonymous 
Maths
Find the length of the parallel of latitude 42 degree north.
asked by Tosin 
Chemistry
Oxygen can be produced in the laboratory by the reaction 2 KClO3(s) → 2 KCl(s) + 3 O2(g) . How much potassium chlorate is needed to produce 2.75 L of oxygen, collected over water at 37◦C and 94.9 kPa? The vapor pressure of water at 37◦C is 6.28 kPa.
asked by Caitlin 
math help!!!!
4. Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find how much he weighed before?
asked by Jman 
physics
A 4.0kg block is stacked on top of a 12.0kg block, which is accelerating along a horizontal table at a = 5.2m/s2 . Let u=uk=us. (a) What minimum coefficient of friction u between the two blocks will prevent the 4.0kg block from sliding off? (b) If u is
asked by Anonymous 
Math
A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students? 12 : 15 15 : 12 27 : 12 12 : 27
asked by Eric 
Math
if josh gives Emily 7 apples, she will have 5 times as many apples as Josh. If Emily gives Josh 7 apples, they will have the same number of apples. How many apples does each currently have?
asked by Ben 
math
Phillip, the proprietor of a vineyard, estimates that the first 9600 bottles of wine produced this season will fetch a profit of $5 per bottle. However, the profit from each bottle beyond 9600 drops by $0.0002 for each additional bottle sold. Assuming at
asked by Julie 
physics
A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 10.4m/s. What is the amplitude if the maximum displacement is 26.6cm and the total distance travelled by the wave is 18.4m?
asked by kim 
mATH
How much money has to be invested at 3.3% interest compounded continuously to have $45,000 after 19 years?
asked by l;ll;,l 
chemistry
how many electrons does Fe3+ gain or lose when the ion forms? A. gains 1 electron B. loses 1 electron C. gain 3 electrons D. loses 3 electrons I think D.
asked by drew 
Math
There are 24 students in a class, 16 are girls and 8 are boys. What is the fraction of boys in the class?
asked by Dar 
finance
Peyton’s Colt Farm issued a 30year, 9.6 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The company’s tax rate is 38 percent. What is the pretax cost of debt? What is the after tax cost of debt?
asked by juli 
Chemistry
The molar enthalpy of vaporization for water is 40.79 kJ/mol. Express this enthalpy of vaporization in joules per gram.
asked by Rebecca 
finance
Peyton’s Colt Farm issued a 30year, 7.2 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The company’s tax rate is 38 percent. The book value of the debt issue is $103 million. In addition, the company
asked by juli 
physics
A 4.00 kg mass and a 3.00 kg mass are attached to opposite ends of a thin 32.2 cm long horizontal rod. The system is rotating at angular speed omega = 4.70 rad/s about a vertical axle at the center of the rod. Determine the kinetic energy K of the system.
asked by Anonymous 
Maths
A geographical globe has a radius of 18cm.find the radius of the circleformed by the parallel of latitude 56 degrees south.
asked by Tosin 
PHYSICS
The cutting tool on a lathe is given two displacements, one of magnitude 4 cm and one of magnitude 3 cm, in each one of five situations (a) through (e) diagrammed in the figure below. Rank these situations according to the magnitude of the total
asked by JOAN 
statistics
A vending machine is designed to dispense a mean of 7.6 oz of coffee into an 8oz cup. If the standard deviation of the amount of coffee dispensed is 0.4 oz and the amount is normally distributed, find the percent of times the machine will a) dispense less
asked by vinnie 
finance
What is ICU’s pretax cost of debt? What is ICU’s pretax cost of debt? ICU Window, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with eight years to maturity that is quoted at 110.5 percent of face value. The issue
asked by juli 
math
Find the accumulated amount A, if the principal P is invested at an interest rate of r per year for t years. P = $2500, r = 3%, t = 3, compounded quarterly $ ?
asked by Julie 
chemistry
testing bronsted lowry reaction predictions...... im super stuck can someone help me steo by step how to figure this out assuming i use the 5 step process? write a balanced chemical equation for ch3coona and hcl reaction position of equilibrium. I know
asked by Tara 
Statistics
According to insurance records a car with a certain protection system will be recovered 90% of the time. Find the probability that 5 of 6 stolen cars will be recovered.
asked by Lexie 
Physics
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe
asked by Chelsea 
phy
Two constant forces act on an object of mass m = 4.50 kg object moving in the xy plane as shown in the figure below. Force 1 is 21.0 N at 35.0°, and force 2 is 47.0 N at 150°. At time t = 0, the object is at the origin and has velocity (3.70 + 2.25) m/s.
asked by patel 
chemistry help!!
For each of the following pairs, indicate which element has the larger first ionization energy Mg or Al. i put Mg. Repulsion of paired electrons in Mg is more significant than Al's higher effective nuclear charge. but got it wrong. Al. Repulsion of paired
asked by Samantha 
Math 8R: Operating w/ Sci.Notation HELP! (2ND QS)
Yellowstone National Park has an estimated 2.5 x 10 (to the 6th power) visitors each year. The Great Smoky Mountains National Park is the most visited of all the National parks, and it has approximately four times the amount of visitors annually that
asked by Laruen 
Chemistry
Hi I have a question So I have to determine the final concentration of NH4Cl in a calorimeter assuming reaction goes to completion. Given Measurements are: delta T = 9.25 degrees Celcius Density of NH4Cl = 1.013 g/mol capacity of NH4Cl= 3.93 J/g*C
asked by Anonymous 
Chemistry
A sample of oxygen is collected in a 387 mL container over water at 15◦C, and the barom eter reads 738 torr. What volume would the dry gas occupy at 781 torr and 15◦C? Water’s partial pressure at 15◦C is 12.8 torr. Answer in units of mL
asked by Caitlin 
chmistry
a solutiona solution is made by dissolving 3.75g of a pure nonvolatile solute in 95g of acetone. the boiling point of pure acetone was observed to be 55.95 Centigrade that,and that of the solution was 56.50 Centigrade.if the molar boiling point elevation
asked by bb 
Algebra 2 help!!!
What value completes the square for the expression? x2 + 14x Use the quadratic formula to solve the equation. x2 – 7x – 6 = 0 Simplify the expression. (–2i)(8i) What are the solutions? 1/2x^2 + 2x + 3 =0 I need help
asked by Robert 
Chemistry
The following three step mechanism has been proposed for the oxidation of iodide ion by peroxide: H2o2 + I^ > HOI + OH^ Slow OH^ + H^+ > H2O Fast HOI + H^+ + I^+ > I2 + H2O Fast A. What is the overall reaction described by this mechanism? B.
asked by Krissy 
algebra
A square flower bed is to be enlarged by adding 2 meters in each side. If the larger square has an area of 196 square meters, what is the length of the original square?
asked by Rima 
math 121
Henry will reject a cookie with less than 8 raisins.In the past, one out of every 100 cookies had less than 8 raisins. Find theprobability that the first cookie Henry rejects is the 5th cookie on the line.
asked by stephen 
social studys
What was one cause of the English Civil War?
asked by me 
math
How would you condense a logarithm expression into a single quantity if the logs have different bases?
asked by Jamie 
Physics
The Falling Paint Can: A painter is standing on scaffolding that is raised at a constant speed vi. As he travels upward he accidentally nudges a paint can off the scaffolding and it falls 15m to the ground. You are watching and measure with your stopwatch
asked by Zalak 
grammar
correct the grammar of the following text: Jason Turner thought he did the right thing when he had seen a man get into a car and drive off much too fast. A year earlier, another dangerous drive was injuring a friend of his, when he was knocking him off his
asked by ali 
Chemistry
A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3mg sample of the compound was analyzed for nitrogen by the Dumas method, giving
asked by Darrel 
math
3mn,5mn,8mn,4mn
asked by hanio 
Multivariable Calculus
A pentagon is formed by placing an isosceles triangle on a rectange. If the pentagon has fixed perimeter P, find the lengths of the sides of the pentagon that maximize the area of the pentagon.
asked by Shayna 
chem131
if the equilibrium mixture contains 0.100M NO2, and N2O4 is 4.6 x 103 what is the concentration?
asked by Anonymous 
Physics
The Spent Rocket Parts: During launches, rockets often discard parts. A certain rocket starts from rest on the launch pad and accelerates upward at a steady 3.3 m/s2. When it is 235 m above the launch pad, the rocket discards a used fuel canister by simply
asked by Zalak 
math
Threeninths of a soccer game is over. Is it halftime? explain
asked by Anonymous 
Math 8R  Operating with Scientific Notation HELP!
Rhode Island is the smallest state. It has an area of approximately 1.55 x10 (to the 3rd power) square miles. Alaska is the largest state. The area of Alaska is 4.28 x 10 (to the 2nd power) times greater than the area of Rhode Island. What is the
asked by Laruen 
Chemistry
Al+S=Al2S3 Balanced equ= 2Al+3S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s? How much Al2S3 were formed in reaction? What is the excess reagent?Al or S? How much excuss reagent left over after reactin? Thanks!
asked by malina 
Physics
The Colliding Balls: A ball is released from rest at a height h above the ground. The ball collides with the ground and bounces up at 75% of the impact speed the ball had with the ground. The collision with the ground is nearly instantaneously. A second
asked by Zalak 
Biology
What role does the environment play in convergent evolution?
asked by Jessi 
algebra
form a polynomial f(x) with real coefficients having the given degree and zeros. Degree 4; zeros:3 +5i; 2 multiplicity 2 enter the polynomial f(x)=a(?)
asked by Heather 
social studys
3. Christians and Muslims wanted to control the Holy Land because *of the region's gold mines. *they needed supplies for their armies. *it had valuable water resources. *they believed it was a sacred place.
asked by me 
Physics. Error equations. Please help!
These two equations concern a lab on the measurement of E/M by the Brainbridge Method. I need to derive the absolute error for two different equations, the first one is: e/m = 2V/B2R2 treat (e/m) as a SINGLE VARIABLE when doing the derivation. The second
asked by Kyle 
chemistry
The pressure in car tires is often measured in pounds per square inch (), with the recommended pressure being in the range of 25 to 45 . Suppose a tire has a pressure of 33.5 . Convert 33.5 to its equivalent in atmospheres.
asked by David 
MATH 112
two planes leave an airport at the same time. Their speeds are 320 miles per hour and 380 miles per hour. If the angle between their courses is 112 degrees, how far apart are they after two hours? (The hint is using the law of cosines)
asked by diego sanchez 
chemistry
what is the formula for the arsenic ion. A. As3 B. As2 C. As, D. As3+ I say c.
asked by drew 
Chemistry
Al_S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s? How much Al2S3 were formed in reaction? What is the excess reagent?Al or S? How much excuss reagent left over after reactin? Thanks!
asked by mal 
Literature
Why do you think the singer was an important person in Danish communities? (Beowulf)
asked by Kathleen 
Chemistry
Use van der Waals’ equation to calculate the pressure exerted by 2.33 mol of ammo nia at −3.7◦C in a 1.25 L container. The van der Waals’ constants for ammonia are a = 4.00 L2·atm/mol2 and b = 0.0400 L/mol. (The values for a and b have been
asked by Caitlin 
physics
What mass on a spring with a spring constant of 120 N/m will oscillate with a period of 1.0 s?
asked by Jason 
physics
a uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its midpoint elastically. If the particle comes to rest after collision find the value of M/m
asked by OINDRILA 
computer programming
Mr. Dacara owns 20 apartment buildings. Each building contains 15 units that he rents 5,000 PhP per month each. He wants a program that will print 12 payment receipt coupons for each of the 15 apartments in each of the 20 buildings. Each coupon should
asked by lady vhalyn 
chemistry
The pressure in car tires is often measured in pounds per square inch (), with the recommended pressure being in the range of 25 to 45 . Suppose a tire has a pressure of 37.0 . Convert 37.0 to its equivalent in atmospheres.
asked by David 
Social Studies 8R help!!!!
What is Ghost Town? I looked in my textbook it's not there. I checked in the glossary, I only see Ghost Dance. Please help
asked by Laruen 
math30
Find the amplitude, period, phase shift, and vertical displacement for: y=7sin5(x85degrees)1.2
asked by alejandro 
Chemistry
Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by
asked by Emma 
epic
A copper penny has a mass of about 4grams. A copper kettle has a mass of about 400 grams. What is true about the density of these two objects?
asked by lynn 
Math
Round $6.60 to the nearest 25 cents.
asked by Jill 
Health
What are the 4 refusal skills
asked by Paul 
physics
A force of 85 N is required to compress the spring by 0.0200 m. How much force is needed to compress the spring by 0.0600 N? 3.
asked by Jason 
chemistry
Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by
asked by Emma 
English
Identify the CAPITALIZED portion of the sentences below. 18. MY FRIEND MARY is coming with us to the zoo. complete predicate complete subject simple predicate simple subject 19. I think we should VISIT the monkeys first. complete predicate complete subject
asked by Jman 
Physics
A ball player hits a home run, and the baseball just clears a wall 17.0 m high located 127.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the
asked by .lex 
physics
A standing wave has a wavenumber 200 rad/m. What is the distance between two adjacent nodes?
asked by Anonymous 
Math 8R  Operating with Scientific Notation HELP!
In constructing the Mall of America in Minnesota, a total of 1.3 x 10 (to the 4th power) tons of steel were used. The Eiffel Tower in Paris, France consist of 7 x 10 (to the 3rd power) tons of steel. About how many times the amount of steel it took to
asked by Laruen 
physics
A 4.5kg block is hung from a spring causing the spring to elongate 12 cm. With what period will the spring oscillate if the spring was stretched 15 cm and released?
asked by Jason 
physics
An object of mass m = 5 kg is suspended by three cables as shown in the figure. If the tension T2 in the horizontal cable is 12 N: 1) What is the angle ƒáƒn that the left cable makes with the horizontal?
asked by reem 
Physics
A standing wave has wavenumber 200 rad/m. What is the distance between two adjacent nodes.
asked by Anonymous 
Civics
1.The constitution grants the federal courts ____ in several different kinds of court cases. This gives them the authority to hear and decide cases properly brought before them. 2. The lowest federal courts are trial courts, which have ___, the authority
asked by Alex 
Chemistry
Your Open Question Show me another » Chemistry help needed... Confused? The following reaction is first order and the rate constant is 2.35 x 10^4 s^1 at 20 degress C. 2 N2O5 > 2 N2O4 + O2 A.) What is the rate of reaction if the [N2O5]=.25 M? B.
asked by Krissy 
Algebra
Write an expression equal to eight more than a number divided by 5
asked by Anonymous 
Math
What is the word form for .3481?
asked by Madelyn 
Chemistry: Le Chatelier's
What happens when CoCl2 is added to the following system? Co(H20)6 + Cl + heat CoCl4 + 6H20?
asked by Evelyn 
chemistry
What is the complete decay series for 241 Am: show every alpha, beta and gamma decay product. What is the reason for beta and gamma products to be in the alpha chain?
asked by What? 
college algebraplease help
solve the following inequality 70x51
asked by Heather 
chemistry
in the formula for calcium bromide (CaBr2), what does the subscripted two indicate? A. the bromide atom has a charge of 2 B. the bromide atom has a charge of 2+ C. there are two bromide atoms for every calcium atom. D. there are two calcium atoms for
asked by drew 
chemistry
Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by
asked by Emma 
Precalc
Evaluate the trigonometric functions by memory or by contruscting appropriate triangles for the given special angles. (a) csc 30deg (b) sin pi/4
asked by Courtney 
math square root
Indicate which of the following are true and which are false. for those that are false, change the UPPERCASE expression to make the statement true. *Every integer is a WHOLE number * the quotient of two non zero numbers is always a RATIONAL number * the
asked by alexander 
college algebra
find the complete zeros of the polynomial function. write f in factored form. f(x)=x^37x^2+25x39 please show all work. I do not understand this.
asked by Heather 
srinivas
How many positive integers lessthan2009 are divisible byany one perfect square greater than 1678?:
asked by emani 
social studys
what is a fief?
asked by me 
math
for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
asked by Andrew 
world geography
According to the Ministerial Conference on the Protection of Forests in Europe (MCPFEs), sustainable forest development is defined by these three criteria.
asked by alice 
probabilities
A bag contains 3 green balls. 2 red balls and a white ball. A boy randomly draws balls from the bag one at a time (with replacement) until a red ball appears. Find the probability that he will make at least 3 draws.
asked by joanna 
math
What is the radius of a circle whose circumference is 22m,formula;C=2 pi r
asked by tobi 
Pschology
A developing field in psychology is called Positive Psychology. It is exploring ways to help people become happier and productive in life. Describe the field of positive psychology and provide your critique of this particular field. What does the research
asked by Janice 
university physics
A mass m1 = 7.65 kg, is at rest on a frictionless horizontal surface and connected to a wall by a spring with k = 67.9 N/m, as shown in the figure. A second mass, m2 = 5.29 kg, is moving to the right at v0 = 15.3 m/s. The two masses collide and stick
asked by bülent 
Calculus
Find the area between y=e^x and y=4(xx^2.
asked by James 
Algebra
Sharon Spent $2 on a magazine; then she spent half of the rest of her money on shoes. She spent half of her remaining money on lunch. She has $12 left. How much did Sharon start with? X= X+2+(a÷2)+(b÷2)+12 Thats correct?
asked by Adalberto 
Math
A boat travels 12 miles up a river, then returns to where it started. The trip upriver took one hour longer than the return trip. If the current is 3mph, find the speed of the boat
asked by Tonya 
Physics
A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.
asked by Samuel 
algebra 11
(K+1)x+2y=6; M=k2
asked by karen 
7th grade social studies
In the Earth's Sourthern Hemisphere, what season begins in March? Spring Summer Fall Winter
asked by Destiny 
geometry
triangle STR is an equilateral triangle. What is the value of x if the measures of the sides ate 7x+5,4x+14, and 10x4 ?
asked by Anonymous 
Precalculus
Solve (log x)^2 = log x Also, when will their be a possibility that an equation will have an extraneous solution? Like if you got two solutions for a log equation, will a negative solution for x automatically be extraneous?
asked by marcus 
maths project
in a class there are 46 students out of them 20 are girls and 26 are boys,find ratio
asked by suraj 
MATHS
Differntiate sin(sinx) using the product rule
asked by LAURA 
English
1. Can you give me a rain check? 2. Can I take a rain check? 3. Can I have a frain check? 4. Can I get a rain check? (Are they all grammatical and the same? Which expression is commonly used?)
asked by rfvv 
probability please help!!
A fair, sixsided die is rolled eight times, to form an eightdigit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction. I think the last 3 digits have to be divisible by 8 to be a multiple
asked by confused 
Thermochemistry, calorimetry
The density of ice is 0.9168 g/cm3. The density of water is 0.9998 g/cm3. Calculate the difference between ΔU (internal energy) and ΔH (enthalpy) during the fusion of 2.5 moles of ice at atmospheric pressure.
asked by Peter 
probability  confused
A fair, sixsided die is rolled eight times, to form an eightdigit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction. I think the last 3 digits have to be divisible by 8 to be a multiple
asked by confused 
Physics
A box is being pushed to the left parallel to the xaxis by a force of 23.0 N. A rope provides a second force of 33.8 N on the box, directed to the right at an angle of 39.0 deg. from the xaxis. What is the magnitude of the net force acting on the box ?
asked by Zack 
math
for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
asked by Andrew 
algebra
use the rational zero theorem to list the potential rational zeros of the polynomial function. Do not attempt to find the zeros. f(x)=2x^7x^5+8x^4+52
asked by confused 
Chemistry
Based on CaCo3 + 2HCl > H2O + CO2 + CaCl. How many ml of 1.00 M NaOH should be used in the titration. 25ml of HCL and 750mg of Tums are combined to simulate an upset stomach.
asked by Shane 
college algebraplease help
Form a polynomial f(x) with real coefficients having the given degree and zeros. degrees 5; zeros 1; i; 7+i please show all work. I am having a hard time understanding this.
asked by Heather 
Math
In addition to the clues, he says that there is a five in the tens place,a seven in the tenmillions place, and a 3 in the hundredthousands place. What number would fit with both sets of clues
asked by yalianne sierra 
Social Studies
1. Does only one baby blue whale drink 200 liters of its mother's milk every day? 2. Does only one African elephant eat about 200 kg of plants a day?
asked by rfvv 
Finance
whited inc. stock sells for $35.25 constant rate 4.50% per year required rate return is 11.50% what is stock expected price 5 years from now
asked by lora 
Science 8R  help
What's the difference between kinetic and potential energy?
asked by Laruen 
Algebra
Sharon Spent $2 on a magazine; then she spent half of the rest of her money on shoes. She spent half of her remaining money on lunch. She has $12 left. How much did Sharon start with? X= X+2+(a÷2)+(b÷2)+12 Thats correct?
asked by Adalberto 
Maths
in the following rings find all units, Zero divisors and idompotent elements and determine whether the ring is a field. a)Z2 b)Z5 c)Z10 NB z is integers( positive or negatives including zero z is integers( positive or negatives including zero
asked by JESS 
physics
A balloon with a radius of 20.0 m at 6.0 oC is heated to 32.0oC. Find the new volume.
asked by Anonymous 
srinivas
If ABC is a triangle with AB, BC MEASURING p,q units respectively.Find the maximum area possible for that triangleABC
asked by emani 
financial management
Suppose you invest $2,500 in an account bearing interest at the rate of 14% per year. What will the future value of your investment in six years?
asked by Candice 
Social Studies 8R help!!!!
Who was the President of the Confederacy?
asked by Laruen 
a work having to do with thanksgiving and go
unscramble this work rssatwee
asked by Anonymous 
English
What other word can i use in place of By? By its excellent magic, the orange gives you vitamin c
asked by rebecca 
physics
Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?
asked by Ahmad Alotaibi 
math
decide on a topic which is adding more clubs for which they would like to collect data and design a survey for school which could really be used to convince the principal to do. Create 57 questions for the survey. Some of my questions for the survey are:
asked by Emily 
Physics
An 80 kg man climbs a 50 mhigh hill in 20 minutes. What is the average power in watts he expends climbing the hill?
asked by Marc 
probability
Im not good at probability. If there are 3 choices, and 3 people can choose any of them, what are the odds of the 3 people choosing all different choices?
asked by mathfailure 
math
A customer uses a $20 bill at a self checkout register to pay for products totaling $14.50. The customer is concerned they did not receive the proper change. How much money should they have received back from the automated register?
asked by Anonymous 
chemistry
Reaction between H2O2 +2NaOH
asked by Anup 
algebra
Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? Justify your answer with an explanation or a graph. How might you explain your answer to someone who has not learned algebra?
asked by Amber 
science
a toy car is traveling .5 meters per second.It goes 3.5 seconds. how far did it travel.
asked by mimi 
Social Studies 8R help!!!!
On my study guide my teacher gave the class it says voter suppression in my textbook it says the definition of suppression is that the definition?
asked by Laruen 
english
The identity that you stand up for can enslave you and close you to the rest of the worldmurathan mungan What does this quote mean??
asked by jada 
science
How are mammals and fish alike
asked by Gio 
chemistry
the fluoride anion always carries a charge of 1 true or false I say true
asked by drew 
Chemistry
Based on CaCo3 + 2HCl > H2O + CO2 + CaCl. How many ml of 1.00 M NaOH should be used in the titration. 25ml of HCL and 750mg of Tums are combined to simulate an upset stomach.
asked by Shane 
square roots
Define the square root of a given number with the use of an example.
asked by alexander 
Physics
A box of mass 4 kg is resting on a table 1.5 m above the floor. There is also a ledge located 5 m above the floor. Find the gravitational potential energy of the box relative to the floor, and the gravitational potential energy of the box relative to the
asked by Stu 
math very hard
A card is randomly drawn from a standard deck. An ace of hearts wins the grand prize; any other ace or heart wins a small prize. What is the probability of winning a small prize? Express your answer as a common fraction.
asked by mathfailure 
TRIG HELP
find the exact solutions over the interval tanx = 1 all real x
asked by Matt 
math
about 7 tenths of the us population in 1991 believed saying 175,104,000 to be true. what was the population?
asked by richie 
Finance
calculate the future value of $5,000, given that it will be held in the bank for five years and earn an annual interest rate of 6%
asked by Anonymous 
Physical
The pencil line is made out of carbon atoms. Assuming that the average diameter of a carbon atom is 3.49x10^10m, how many atoms thick is the pencil?
asked by Sarah 
English
1. Blue whales eat only krill. 2. There is a krill in the sea. 3. There are many krills in the sea. 4. There are much krill in the sea. 5. There are many krill in the sea. (Which ones are grammatical? Would you check them? Thank you.)
asked by rfvv 
math
The graph of the polynomial function P(x) is shown. a. List the real zeros of P(x). b. List the turning points of P(x). c. State the left and right behavior of P(x).
asked by tg 
Math
Assuming that each corner must be pinned, what is the least number of drawing pins that you need to display four rectangular pictures of the same size and shape so that they can all be seen?
asked by Jones 
maths
for what value of P are (2P1),7 and 3Pare three consecuctive term of an AP?
asked by rohit singh 
Chemistry
Calculate pH of NH4OH which is 1%ionized
asked by sara 
Science
6. Absolute dating provides an age in years for the rocks tested. True False
asked by Jman 
biostatistic
recent suggestion is 60 min of exercise per day. A sample of 50 adults in a study of risk factor report exercising a mean of 38 min per day with a standerd deviation of 19 min .based on sampal data, is physical activity significantly less than recommended?
asked by nono 
understanding psychology
What happens four weeks from conception and cell division?
asked by seema 
Math
I have to graph a function; there's an x and y input/output chart. Should I connect the points in my graph?
asked by Cassidy 
Algebra II  Word Problem
A convenience store clerk can wait on 6 customers per minute. If customers arrive at an average rate of x people per minute, the time T spent in line is: T=1/6x, where 0
asked by John 
algebra
an online music vlub charges $4.75 for the first music download and $1 for each additional download write a rule describing the total fees f as a function of additional downloads d
asked by vale 
Algebra II
Find the xvalue at which y=2x+5/x3 is undefined.
asked by John 
Managerial Finance
The cost of capital for Goff Computers,Inc
asked by Meredith 
algebra
jhon has $15 in his account for every week he works as a bag boy he earns $50 write an equation for the ammount of savings in his accountafter x amount of weeks.is this descrete or continuous?
asked by vale 
math
Anthony earns an allowance for doing work at home .the first day he earns $1. ,$2. for the next two days,$3.for the next three days and so on and so on.If Anthony keep earning money this way ,on what day will he earn $6.?(2)Anthony saves all the money he
asked by zack 
chemistry
How many atoms of iron (Fe) are present in 4.0g of iron
asked by steve 
Pre calculus
Okay, I'm really fuzzy about my log and exponential chapter. For example, solving some exponential equation such as e^3x7 x e^2x=4e I assume I start this equation by taking the natural log of both sides, but how will I know just by looking at an equation
asked by marcus 
math
Divide 1.632 divided by 1000
asked by Anonymous 
Math
This is a first grade problem my sister is having trouble. It is enrichment 55 " at the carnival" it says how many ways can Amanda ride all 3 rides? We need help cause I don't even know it myself!
asked by Gabby 
Chemistry
Hi, i am stuck on this question, how do I go about answering it? why are fluorine atoms normally found as part of fluorine molecules?
asked by Ruth 
Humanities
give me the link about The Cause of The Decline of the Power of the Church
asked by Ales 
Physical chemistry
If a sample of AgCL is shaken with excess water and concentrated solution of sodium chloride, how would the equilibrium be affected
asked by Novia 
math2
how to solve 2[5a3(4ab)]4[8b+5(a2b)]
asked by jasmine 
trig
find all the values of X between 0 and 2π such that cos(3xπ/2) = √3/2
asked by diego sanchez 
Emily.
Find the interval(s) where this function is increase and the interval(s) where it is decreasing: g(x)=e^(x) Any work shown would also be greatly appreciated. Thank you!!
asked by Math/Calc 
chemistry
Chemical analysis of a germanium crystal reveals indium at a level of 0.03091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free
asked by ira 
Psychology
Janet has been attending Killian High School for three years. At the beginning of her senior year, she enrolled in Ms. Brosham's English class. She heard from her two older siblings that Ms. Brosham was a hardnosed, crusty teacher who did not tolerate
asked by Kent 
introduction to psychology
Flashcard sets with a 'rewards' term meaning 'people do not always demonstrate the behaviors that they observe. according to albert bandura, a social cognitive psychologist, what is the key to demonstrating observed behaviors?'
asked by seema 
English
Please check it for me ;) "The text is about a lonely boy  Mark  son of murderer. As far as Mark's father is concerned he was drank before accident. Once upon a time when he was drunk he decided to back home by car. He should have come back by foot.
asked by S. 
math
P: Solve each to four decimal places (x real and 0 in degrees) 5 cos x  2 = 0, 0
asked by john 
157590 triangle??
what is the formula for these triangles ?
asked by mathfailure 
chemistry
why do beryllium and flourine combine in a 1 : 2 ratio ?
asked by Anonymous 
math
Solve each equation by testing the given values for a variable y9=11 y=18, 19, or 20
asked by Gio 
English
If there is much running water from the faucet, the water becomes lukewarm. So you should turn down the faucet a little so that it has little running water, and then the water will become more warm or hot. Then the baby in the bath tub will not feel cold.
asked by rfvv 
precalc help !!!!!!!
#1 cos x+sec x=2 #2 (1+tan x)^2= 2 tan x+2 #3 cos^2xsin^2 x+1=cos x please show all work & thanks
asked by Haley 
social studies
Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans. Make certain that you describe how he dresses, how he lives, what he believes, how he spends his timein short, describe him so
asked by lisbett 
eng
is the sentence: "By using a statement that began with 'I,' Ramon was able to state his feelings clearly." a simple sentence or a complex sentence?
asked by tom 
physics
Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?
asked by Ahmad Alotaibi 
physics
Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?
asked by Ahmad Alotaibi 
Physics
Two Peaches, Two Seconds, One Roof: A peach is thrown straight up from the edge of the roof of a building. A second peach is dropped from the roof 2s later. a. If the height of the building is 60m what must the initial speed of the first peach be if both
asked by Zalak 
math
what times 60 equals 5076
asked by brittney 
engineering
Determine the resultant force and its inclination with ox
asked by Tronick a'gitok 
precalc help !!!!!!!
cos^2xsin^2 x+1=cos x
asked by Haley 
algebra
A roast chicken is done with the temperature of the thigh meat is between 165 and 175. Write a compound inequality to represent the temperature at which a roast chicken is done.
asked by Ian 
Physics
A ball is thrown straight up in the air at an initial speed of 30 m/s. Using conservation of energy, find the maximum height of the ball.
asked by Joey 
math
A customer uses a $20 bill at a self checkout register to pay for products totaling $14.50. The customer is concerned they did not receive the proper change. How much money should they have received back from the automated register?
asked by Anonymous 
math
A customer uses a $20 bill at a self checkout register to pay for products totaling $14.50. The customer is concerned they did not receive the proper change. How much money should they have received back from the automated register?
asked by Anonymous 
math
for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=20,p=1/8, x=2 I know the answer but I do not know how to get to that. Answer is 0.268 should I reduce fraction?
asked by Andrew 
sound and hearing
An excited child in a campground lets out a yell. Her parent, 1.31 m away, hears it as a 89.3dB sound. A climber sits 701 m away from the child, on top of a nearby mountain. How loud does the yell sound to the climber? (in dB) A: 34.731 dB this is my
asked by bülent 
Grammar
Can you put (grin) in a sentence where it acts as direct object?
asked by Ash 
physics
Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?
asked by Ahmad Alotaibi 
Physics
he graph of the velocity of a mass attached to a horizontal spring on a horizontal frictionless surface as a function of time is shown below. The numerical value of V is 5.48 m/s, and the numerical value of t0 is 8.97 s. a) What is the amplitude of the
asked by Jalopy 
precalc
(1+tan x)^2= 2 tan x+2 please show all work
asked by Haley 
maths project
don't know
asked by suraj 
ENGLISH
Can someone tell me what is Elite tourism?
asked by alexander 
college algebraplease help
Find a bound on the real zeros of the polynomial f(x)=x^4+4x^38x6 can someone help me, I am confused and don't know where to start.
asked by confused 
square roots
Describe the Number systems used in mathematics with the use of subsets of the real number system.
asked by lisa 
science
which household items contain acids?
asked by aqsa khan 
college algebra
Solve the inequality algebraically 11x3¡Ý4x^2
asked by Heather 
precalc
cos x+sec x=2 if you could please show all work
asked by Haley 
math
is 004.15 more than 010.1
asked by Anonymous 
math
23/2415/24
asked by jaelah mays