Questions Asked on
November 12, 2014

Science Help!
Two nonmetals from Group 16 are likely to form a(n) A. Metalic bond. B. Double bond C. Ionic bond D. Covalent bond Is the answer C? Thank you
asked by Callie 
Science Help!
A student mixed two clear liquids together in a beaker. A solid and a new liquid formed. The student forgot to write down the mass of one of the reactansts. The rest of the data are shown in the table below. Table Mass (g) Liquid reactant A/ unknown Liquid
asked by Callie 
Latin
1.Hodie viis ad Europam ambulamus. 2. Romanas terras pugnis non occupabunt! 3.Carro et equo ex provinciis cibum portabamus. 4.Romani deos templis, sacrificiis et statuis laudabant. 5.Servus in arena gladio pugnabit. I think it is.. 1.Today we walk on the
asked by Niyiha 
math
. what are the steps to solve this problem? 0.000027/0.000009 requirements: explain how to use scientific notation to solve the problem describe how to divide written in scientific notation give your final answer in simplest form.
asked by math help asap 
science
A geologist working in a national park finds a mineral. He is carrying a kit that contains a penny, a hand lens, a piece of tile, a geologic hammer, and a jackknife. Describe how the geologist can use these items to determine some of the mineral’s
asked by tami 
Science Help!
You are creating a carbon cycle poster. What could you include in the poster to demonstrate the cycling of carbon? A. A rock falling B. Shells fossilizing C. An eagle breathing D. The sun shining Is the answer D? Thank you
asked by Callie 
Math Help!!!
1. Which of these numbers can be classified as both real and rational? ½ 1.016879413894 Square root of 5 0.89089908999 2. Which is both a real number and an integer? Square root of 7 0.15 15 1/3 3. Which is an example of an irrational number? Square
asked by math help asap 
Algebra 2 HELP plz
An object is launched upward with an initial velocity of 64 feet per second from a platform 80 feet high. 1.) Write a height model for the object. I wrote my model as .... h=16t^2 +64t +80 2.) How many seconds until the maximum height is reached? I had 2
asked by kylie 
Physics
Sam pushes crates starting form rest across the floor of his classroom for 3 s with a net force as shown above. For each crate, rank the following from greatest to least: A 100N/30kg, B 75N/20kg C 50N/10kg 1. Impulse delivered 2. Change in momentum 3.
asked by Kay 
Science Help!
Tony's teacher gave him an unknown substance to identify based on its priorities. After a few tests, Tony listed his observations in a chart. Chart Solid at room temperature Brittle COonducts electricity What kind of substance does Tony have? A. Nonmetal
asked by Callie 
Science Help!
When two hydrogen atoms bond with one oxygen atom to form water, what happens to the electrons? A. Each hydrogen atom donates its electron to the oxygen atom B. The oxygen atom donates an electron to each hydrigen atom C. A pair of electrons is shared at
asked by Callie 
Physics
A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor. Immediately after the impact, a 200g piece moves along the xaxis with a speed of 2.00m/s and a 235g piece moves along the the y axis with a speed of
asked by Alex 
Probability
A husband and wife discover that there is a 10% probability of their passing on a hereditary disease to any child they have. If they plan to have three children, what is the probability of the event that at least one child will inherit the disease?
asked by KG 
Social studies
which part of the pakistan country is warmer?
asked by Noor 
math
An atom of gold has a mass of approximately 3.25 × 10−22 grams. What is the mass of 7000 atoms of gold? Express your answer in scientific notation
asked by jahron 
calculus
A ball is thrown 12 meters in the air (so that the initial upanddown distance is 24 meters). The ball rebounds 95% of the distance it falls. What is the total vertical distance traveled by the ball before it stops bouncing?
asked by Anonymous 
Science
describe how the triassic period was a transitional time. during the mesozoic era explain why the boundary between triassic and jurassic period is similar to the boundary between Permian and triassic periods
asked by Kelsey 
Science Help!
Atomic theory is A. Subject to change if new information is discovered B. A solution to the problem of differing isotopes C. Unchangeable D. A descriptive table that lists all of the elements Is the answer A? Thank you
asked by Callie 
finance math
Meg's pension plan is an annuity with a guaranteed return of 7% interest per year (compounded annually). She would like to retire with a pension of $30000 per annum for 15 years. If she works 31 years before retiring, how much money must she and her
asked by donna 
Physics
A car starts from rest and travels for 5.9 s with a uniform acceleration of +1.3 m/s2. The driver then applies the brakes, causing a uniform acceleration of 1.7 m/s2. The breaks are applied for 1.60 s. (a) How fast is the car going at the end of the
asked by Anonymous 
Maths
4. Tonya is 1.3 meters tall. She stands 7 meters in front of a tree and casts a shadow 1.8 meters long. How tall is the tree?
asked by Tim 
Science
Which of the following factors does not vary between a fastfollowing river and a pond that receives no water input? a. oxygen levels b. salt concentration c. temperature d. fish species I think possibly b. Ms. Sue?
asked by Amy 
STATISTICS
How can I solve this? A random sample of medical files is used to estimate the proportion p of all people who have blood type B. If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure
asked by trish 
Chemistry
Iron has density 7.87 g/cm3. If 52.3 g of iron is added to 74.5 mL of water in a graduated cylinder, to what volume reading will the water level in the cylinder rise? mL
asked by Teresa 
Math
how is the quotient 80000/2000 different from 80000/200 or 80000/20?
asked by Elias 
sci i think its b
A student is trying to identify the different forms of energy described in the following chart: Form of Energy Description Examples Energy A energy that travels in waves through space light radio waves Energy B energy that depends on the height of an
asked by somebody help i am new 
Maths
Stephanie casts a shadow of 1.2 m and she is 1.8 m tall. A wind turbine casts a shadow of 10 m at the same time that Stephanie measured her shadow. Draw a diagram of this situation and then calculate how tall the wind turbine is.
asked by Anonymous 
chemistry
The reaction SO2 + H2O =H2SO4 Is the last step in the commercial production of sulfuric acid . the enthalpy change for this reaction is 227 KJ . In designing a sulfuric acid plant is it necessary to provide for heating or cooling of the reaction mixture ?
asked by mathew 
alg 2
The book asks to us the quadratic formula to solve for the equation. Can someone help with these examples: 1.) x^2+4x2=0 2.) 2x^2 5x2=0 3.) x^2+2x=4x 4.) 6x^2 +3x+2=3 ______________________________________ There are more problems but I think I can
asked by Kylie 
math
Welmin makes a square quilt that has an area of 100 square feet.It has 25 square blocks, each the same size. What is the legth of each side of a block? A 2 feet B 4 feet C 6 feet D 10 feet is the answer b 4 feet someone please help
asked by math help asap 
sixth grade math
The poster shows how many of its games the football team has won so far. Express this information as a fraction, a percent, and as a decimal. Can someone show me how to solve this problem?
asked by chris 
math please help
The sales tax oon a $350 computer is $22.75. Find the saes tax rate. 24 red marbles is 40% of _____ marbles.
asked by turnalina 
Calculus
9) The rectangles in the graph illustrate a left endpoint Riemann sum for f(x)=(x^2/8) on the interval [4,8]. What is the value of this left endpoint Riemann sum? The rectangles in the graph illustrate a right endpoint Riemann sum for f(x)=(x^2/8) on the
asked by Hailey 
math for social science
A bag contains 3 red marbles, 1 green one, 1 lavender one, 3 yellows, and 3 orange marbles. HINT [See Example 7.] How many sets of five marbles include at least two red ones?
asked by Anonymous 
PED 212 Foundation of Movement & Motor Activitie
Question 1.1. Which of the following “reminders” for successful lesson planning is correct? (Points : 1) a. it helps you decide when to b.teach certain activities c. it helps you remember which level you are teaching d. it helps you assign appropriate
asked by ashley 
College Algebra
An object is projected vertically upward from the top of a building with an initial velocity of 112 ft/sec. Its distance s(t) in feet above the ground after t seconds is given by the equation s(t) = −16t^2 + 112t + 100. (a) Find its maximum distance
asked by Kyle 
chemistry
calculate the amount of heat released when 77.0g of steam at 104.5 celsius cools to ice at 0.0 celsius. I don't understand the steps to take to solve this problem. Can someone walk me through it please?
asked by Loretta 
Biology*STUCK*
The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Glycolipids and glycoproteins are examples of carbohydrates on the surface of red
asked by Cathy 
Science Help!
Which reaction is exothermic? A. Cellular respiration B. Photosythesis C. Baking soda+ vinegar D. Melting ice Is the answer A?
asked by Callie 
Chemistry
if 10.0L of neon gas exerts a pressure of 125psi at 373K, what is the number of moles of gas? I don't know how to set this up. I am using ideal gas law N=PV/RT but my answer is not matching. I converted the 125psi to 8.50atm N= 8.50atm*10.0L/1 k * 373k*1
asked by Loretta 
Physics
Two objects are moving in the xyplane. No external forces are acting on the objects. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (1.8m/s)i + (2.7m/s)j. Some
asked by Max 
Science
How do I find how many seconds that pass between wave crests when I have the Frequency = 0.5 Hz Wavelength = 6 meters Thanks
asked by Mom 
physics
The drawing shows a 156kg crate hanging from the end of a steel bar (S = 8.1 x 1010 N/m2). The length of the bar is 0.117 m, and its crosssectional area is 7.44 x 104 m2. Neglect the weight of the bar itself and determine (a) the shear stress on the bar
asked by S 
Physics
A neutron with a mass of 1.67x10^27 kg traveling east with a kinetic energy of 2.00x10^21J collides perfectly elastically with helium nucleus with a mass 6.68x10^27 kg that is initially at rest. After the collision, the neutron has a kinetic energy
asked by Johnny 
biology
if a color blind woman marries a man with normal vision,how do you set up punnett square?
asked by Anonymous 
Math
$2500 is invested in an account that pays 12% interest, compounded continuously. Find the time required for the amount to triple and round the final answer to the nearest tenth of a year.
asked by Tamie 
Math
In a triangle ABC, with angles A, B, and C and sides AB, BC, and AC, angle B is a right (90°) angle. If the sin of angle A is 0.5 and side BC is 8 inches long, what is the length of side AC?
asked by Cory 
math
write all the steps to solve the following problem. explain your steps as you solve it. a certain computer can perform 10^5 calculations per second. how many calculations can it perform in 10 seconds?
asked by math help asap 
8th grade language arts
4.)Which word or phrase is closest in meaning to the word unanimous? a.)justifies b.)in agreement
asked by somebody help i am new 
Statistics Help!
Please help! In a combined study of northern pike, cutthroat trout, rainbow trout, and lake trout, it was found that 22 out of 845 fish died when caught and released using barbless hooks on flies or lures. All hooks were removed from the fish. Let p
asked by Sara 
chemistry
a student measures the conductivity of a KNO3 solution and determines it to be a strong electrolyte.what species are in solution?
asked by Anonymous 
College Algebra
Ozone occurs at all levels of Earth's atmosphere. The density of ozone varies both seasonally and latitudinally. At a given city, the density D(h) of ozone (in 10^−3cm/km) for altitudes h between 20 kilometers and 35 kilometers was determined
asked by Kyle 
Physics
A pendulum on earth swings with angular frequency ω. On an unknown planet, it swings with angular frequency ω /2. The acceleration due to gravity on this planet is A) 4g B) 2g C) g/2 D) g/4 I think it is C but I am not sure...
asked by Ming 
physics
It has been said that sometimes lead bullets melt upon impact. Assume that a bullet with an initial temperature of 295 K receives 73.5 % of the work done on it by a wall on impact as an increase in internal energy. (The melting point of lead is 601 K, the
asked by Anonymous 
themodynamics
liquid water of mass 10 kg & temperature 20 degree celsius mixed with 2 kg of ice at 5 degree celsius till equilibrium is reached at 1 atm presssure . find entropy ??
asked by vishal 
Can some one check my finance answers please
Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is
asked by Ed 
Chemistry
What is the molar mass of 0.500 g of unknown monoprotic acid used in titration, if 22.5 mL of 0.15 M NaOH solution was required to neutralize it? I do not need the answer, but instead an example of how to do a question just like it.
asked by Cheyenne 
English
4.)Which word or phrase is closest in meaning to the word unanimous? a.)justifies b.)in agreement
asked by somebody help i am new 
Science Help!
How many valence electrons does magnesium (Mg) have? A. 12 B. six C. three D. two Is the answer D?
asked by Callie 
Math
The length of a rectangle is 5 centimeters less than three times it's width . It's area is 12 square centimeters. Find the dimensions of the rectangle
asked by Beulah Anderson 
Math Help
The number y of daily fee golf facilities in the United States from 1995 to 2003 can be represented by the following model where t represents the year with t = 5 corresponding to 1995. y=4381+1883.6lnt 5=t=13 During which year did the number of daily fee
asked by Lola 
Chemistry
1. what type of covalent bonded liquid will a polar covalent solid dissolve in? (hint like dissolves like) 2. what type of covalent bonded liquid will a non polar covalent solid dissolve in? (hint like dissolves like) 3. In what type of solvent will a
asked by Theresa 
physics
A 4.5 kg block is dropped onto a spring of spring constant 1861 N/m from a height of 1500 cm find the speed of the block when the compression of the spring is 12 cm. The acceleration of gravity is 9.81 m/s
asked by chris 
Finance
Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is
asked by Ed 
Algebra
Find all positive integer values of c such that the equation x^27x+c=0 only has roots that are real and rational.
asked by Trish Goal 
Physics (Work Problem)
A 25kg box is pulled across a frictionless floor by a rope that is inclined 30 degrees above horizontal. The tension in the rope is 50N. How much work is done by the force in moving the crate 10 meters? If the box started at rest, what is the final
asked by James T. 
Chemistry (Equilibrium)
Consider the following equilibrium system at 900°C: H20(g) + CO(g) H2(g) + CO2(g) Initially 5.0 moles of H2O and 4.0 moles of CO were reacted. At equilibrium, it is found that 2.0 moles of H2 are present. How many moles of H2O remain in the mixture? Would
asked by Jessica 
statistics
B} The average number of mosquitoes in a stagnant pond is 70 per square meter with a standard deviation of 8. If 36 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 70.9 mosquitoes
asked by Loren 
English
4.)Which word or phrase is closest in meaning to the word unanimous? a.)justifies b.)in agreement
asked by somebody help i am new 
Science Help!
Which chemical equation is balanced? A. H2O> H2+2O2 B. 2H2O> 2H2+O2 C. 2H2O> H2+2O2 D. H2O> 2H2+2O2 Is the answer A? Thanks
asked by Callie 
physics energy and work
To push a 33.0kg crate up a frictionless incline angled at 27.0° to the horizontal, a worker exerts a force of 388 N parallel to the incline. The crate moves a distance of 4.10 m. What work is done on the crate by the worker? What work is done on the
asked by Hi 
College Algebra
Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. xintercepts −2 and 8,highest point has ycoordinate 5
asked by Kyle 
Algebra
You invest an initial $4,500 in an account that has an annual interest rate of 4.5%, compounded daily. How much money will you have in the account after 10 years? Round your answer to the nearest whole number.
asked by Julia 
Probability.. HELP!
At a certain hospital, 40 patients have lung cancer, 30 patients smoke, and 25 have lung cancer and smoke. Suppose the hospital contains 200 patients. If a patient chosen at random is known to smoke, what is the probability of the event that the patient
asked by KG 
chemistry
5.0 mL of H2SO4 solution was titrated with 0.20 M NaOH standard solution. The volume of NaOH needed to reach the equivalent point was 9.5 mL. 1. In this titration setup, what is the titrant? and what is the analyte? 2. What is the number of mole of H2SO4
asked by hj3s 
math
Water is leaking out of an inverted conical tank at a rate of 6700 cubic centimeters per minute at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 meters and the diameter at the top is 3.5 meters. If the
asked by Charlie 
Chemistry
Consider the following equilibrium: 2HI(g) *are in equilibrium with* H2(g) = I2(g) Keq = 81.0 A 2.00L container is initially filled with 4.00 mol HI. Calculate the [HI] at equilibrium. *I don't know how to put the equilibrium sign on the computer* Can
asked by katie 
math
write the steps for finding 50x30= by factoring the tens
asked by Amari 
math
jasmine bought 6 gallons of apple juice. after filling up 4 bottles of the same size with apple juice, she has 0.3 gallons of apple juice left. hhow many gallons of apple juice are in each container?
asked by kelsey 
Physics
A neutron with a mass of 1.67x10^27 kg traveling east with a kinetic energy of 2.00x10^21J collides perfectly elastically with helium nucleus with a mass 6.68x10^27 kg that is initially at rest. After the collision, the neutron has a kinetic energy
asked by Johnny 
Chemistry
0.05 L of chlorine gas is bubbled through 0.5 L of 2 M sodium Bromide solution. What type of reaction is this ? A) Single Replacment B) Double Replacement C) Synthesis D) Decomposition E) Combustion  What product(s) will be predicted for this reaction?
asked by Courtany 
algebra
Tom invests $10,000 into two accounts, one paying 2% interest per year and the other paying 5% interest per year. He invested 3 times as much in the account paying 5% than in the account paying 2%. how much interest will he ear in one year?
asked by Taylor 
Civics
"The legislative power of the state shall be vested in a legislature of the State of Florida, consisting of a senate composed of one senator elected from each representative." The quote above mandates one executive to serve from each district. describes
asked by Baxie 
chemistry
28.09 g of silicon contains 6.02 1023 silicon atoms. What is the mass in grams of 1.06 1025 silicon atoms? Can you help me please.
asked by Teresa 
Physics
an astronaut of mass 150 kg is stranded 100 m from the international space station and is at rest relative to it he decides to throw his movie camera of mass 4.5 kg away at a speed of 10 m/s he has 5 minutes of air left in his tank does he make it back in
asked by Anonymous 
chemistry
2.9 in3 of mercury to its volume in milliliters and its mass in kilograms
asked by Teresa 
Science
A famous scientist once said that wherever in the universe life exists. Some of those lifeforms must be colored. Why would scientist make such a statement?
asked by River 
math
Mr. Sims has 198 oranges. he packs them into 5 crates. Use rounding to estimate the number of oranges in each crate.
asked by Jordan 
physics
A copper (Young's modulus 1.1 x 1011 N/m2) cylinder and a brass (Young's modulus 9.0 x 1010 N/m2) cylinder are stacked end to end, as in the drawing. Each cylinder has a radius of 0.38 cm. A compressive force of F = 6100 N is applied to the right end of
asked by S 
Civics
1. "We, the people of the State of Florida, being grateful to Almighty God for our constitutional liberty, in order to secure its benefits, perfect out government, ensure domestic tranquillity, maintain public order, and guarantee equal civil and political
asked by Baxie 
Physics
A 4 kg mass and a 9 kg mass are being held at rest against a compressed spring on a frictionless surface. When the masses are released, the 4 kg mass moves to the east with a speed of 2m/s. What is the velocity of the 9 kg after the are released?
asked by Matt 
calculus
1) A particle is moving with acceleration a(t)=36t+10. its position at time t=0 is s(0)=16 and its velocity at time t=0 is v(0)=9. What is its position at time t=11?
asked by Hailey 
Algebra HELP!
An estimate of the frog population in a certain pond was found by catching 30 frogs, marking them, and returning them to the pond. The next day, 50 frogs were caught, of which 14 had been marked the previous day. Estimate the frog population of the pond.
asked by Ashley 
PreCalc/Trig...
Write a function with the following characteristics: A vertical asymptote at x=3 A horizontal asymptote at y=2 An xintercept at x=5
asked by Anonymous 
physics energy and work
A 47.6kg diver steps off a 10.82 m high diving board and drops straight down into the water. If the diver comes to rest 5.3 m below the surface of the water, determine the average resistance force exerted on the diver by the water. What is the total
asked by Hi 
geometry
Find the value of x. Then classify the triangle by its angles. 60 X 60
asked by Anonymous 
math
A street light is at the top of a 16.0 ft. tall pole. A man 5.9 ft tall walks away from the pole with a speed of 5.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 47 feet from the pole?
asked by Charlie 
Math
Patrick drew a map of his neighborhood. He used a scale in which 1 inch equals 2 miles. What distance on Patrick's map should represent the 1.5 miles between his house and the nearest gas station?
asked by Anonymous 
statistics
I have no idea how to solve this. In a sample of 16 students, 15 were righthanded. Can we construct a 95% confidence interval for the proportion of all students who are righthanded?
asked by jessica 
maths
write down any 3 platonic solids you know
asked by indiphile 
Science
One of the accessory pigments used in photosynthesis is betacarotene, a carotenoid found in high concentration in carrots. When one molecule of betacarotene is split by an enzyme, two molecules of vitamin A are produced. Removal of a hydrogen atom from
asked by River 
history
1. Which group believed a strong national government was critical to the country? federalists antifederalists
asked by jasmine 
Probability.. HELP!
Three men were walking down a street talking when they met a fourth man. If the fourth man knew that two of the men always lied and the third always told the truth and he asked the three men a question, what is the probability that he got a truthful answer
asked by KG 
Math
Question: Write a word problem using 7 groups. And then solve the problem Can you give an example?
asked by James 
chemistry
23.9 g of CaCl2 (MM = 111.0 g/mol) is dissolved in enough water to make 300. mL of solution. What is the molarity of the solution?
asked by Brendon 
PreCalculus
I really need help on this question Simplify the expression by using a DoubleAngle formula or a HalfAngle Formula cos^2 0/2sin^2 0/2
asked by Andrea 
statistics
what is the difference between parameter and statistic
asked by ebong 
English
1. What is the simple subject of the following sentence? During the night, the frightened child called for his mother and father. A. Night B. Child C. His D. Frightened B?
asked by Sarah 
Math
Use the formula y=50x25 Approximately how many minutes will it take a student to type a 2500 word essay if in 8 minutes they can type 375 words and in 15 minutes they can type 725 words
asked by M 
math
Sally and Marta had the same number of postcards. After Sally sold 18 of her postcards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?
asked by Jordan 
stats
if 60 % of all women are employed outside the home find the probability that in a sample of 20 women at least 10 are employed
asked by Anonymous 
Chemistry
28.09 g of silicon contains 6.02 1023 silicon atoms. What is the mass in grams of 1.06 1025 silicon atoms?
asked by Teresa 
math
the surface area cost of construction per m^2 for a large box is $50 for the base, $60 for the top and $40 for the walls. Find the dimensions of this box that minimize the cost if its volume has to be 9m^3 and its height, 1m
asked by Tom 
Biology*STUCK*
The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Glycolipids and glycoproteins are examples of carbohydrates on the surface of red
asked by Cathy 
Reading
James Baldwin's eloquent, forceful style has given his work its wide recognition... Which of the following statements best summarizes the main idea of the passage?
asked by Anonymous 
Science Help!
Which of the following is true about photosythesis? A. It is an exothermic reaction B. It is an endothermic reaction C. It produces carbon dioxide D. It occurs in animals Is the answer C? Thank you
asked by Callie 
Physics
an object of mass 5 kg has initial speed of 8 m/s it is sliding across an 8 m long table and has a coefficient of friction of .204 with the table sitting at the edge of the table is a 3 kg object at rest the 5 kg object collides and sticks to the 3 kg
asked by Anonymous 
English
5.)Which word is the best choice to complete the following sentence?She didn’t want to get in trouble for breaking the window, so she wrote a note letting the teacher know it needed to be fixed, and mailed it. a.)authorized. b.)unanimously.
asked by somebody help i am new 
math
A basket with 12 apples has a mass of 3105 grams. The same basket with 7 apples has a mass of 1980 grams. Each apple has the same mass. What is the mass of the basket?
asked by Jordan 
science
1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is
asked by ava 
PreCalculus
Prove the identity: cos(xπ/2)=sin x
asked by Adrian 
chemistry
{V1} mL of 0.100 M HCl is placed in a {V2}.0 mL volumetric flask and water is added to bring the final volume up to 250.0 mL. What is the molarity of the dilute solution?
asked by Brendon 
Calculus
Find the general indefinite integral ∫ v(v3+5)2dv
asked by Hailey 
Algebra
I already posted this question and Reiny answered it, I just wanted to clarify my answer Problem: If f(x) is a polynomial of degree 4, and g(x) is a polynomial of degree 2, then what is the degree of polynomial f(x)g(x)? Reiny: so f(x) has to contain an
asked by Trish Goal 
physics
A skier going down a hill accelerates from 5.15m/s to17.3m/s over a period of 11.7 seconds. For all calculations, you may neglect drag. If the skier’s total mass is 57.3kg, what is the average force applied by the snow against the skis to bring her to a
asked by sarah 
essay edit
can someone edit this? Thanks in advance! Mcnamara's Eleven Points in light of the US's involvement with the War in Iraq The inevitable fog of misunderstanding and irrational human error within war can lead to mass killings, chaos, and inevitable failure.
asked by christine 
intermediate algebra
two perpendicular lines intersect at (2,3) one of the lines has an xintercept of 2. what are the equations of both lines?
asked by Taylor 
math olympiad
If the digonal of a rectangle is square root of 89. Find the lenght and breadth ?
asked by deepika 
Freshman Algebra
Using a chart: At noon a private plane left Austin for Los Angeles,2100km away, flying at 500km/h. One hour later a jet left Los Angeles for Austin at 700km/h. At what time did they pass each other?
asked by Madison 
Math
Sally has 3 planting boxes . Each box is 4 feet wide and 8 feet long. How much space does she have altogether? Is it 3x4 + 3x8= 36 total feet?
asked by Al 
Physics
In a horizontal springmass configuration, the position of the 0.52 kg mass is described by [x = (1.09 m) sin(2.70t)] a) What is in meters the amplitude of these oscillations? b) What is in m/s the maximum speed of the mass under these conditions? c) What
asked by Serena 
statistics
at the tire store, 10 out of every 100 tires are defective. if your parents randomly choose and purchase 4 new tires for a family vehicle from a set of 100 newly shipped titres, what is the probability that all four will be defective
asked by karen 
statistics
a jar contains red and blue marbles. two marbles are chosen without replacement. the probability of choosing a red marble and then a blue marble is .26, and the probability of selecting a blue marble first is .43. what is the probability of selecting a red
asked by karen 
chemistry
What is the chemical eguation for a small piece of pottasium dropped In a beaker of water.
asked by ruth oluwayomi 
chemistry
How much CaCl2 (MM = 111.0 g/mol) would you weigh out to prepare 325. mL of 0.150. M CaCl2?
asked by Brendon 
Algebra
The dimensions of a rectangle are such that it's length is 9 in. more than its width. If the length were doubled and if the width were decreased by 4 in., the area would be increased by 110 in^2. What are the length and width of the rectangle?
asked by Anonymous 
MATH
HOW IS ADDITION & SUBTRACTION OF POLYNOMIALS SIMILAR TO ADDITION & SUBTRACTION OF RADICAL EXPRESSIONS?
asked by JUN 
science
I'm curious to know why does energy changes form?
asked by Nicole 
Math
do you borrow his bike for a total of 41 minutes.before lunch,he vote for one minute less than five times the number of minutes he rolled after lunch. how many minutes did you fire ride before lunch
asked by Greg 
Math, Please Help!
Suppose a dot is placed at random in a 10 x 10 graph grid in which squares have been numbered from 1 to 100 with no number repeated. Now simulate choosing 100 numbers at random between 1 and 100 inclusive. How many numbers might you expect to match the
asked by Ashley 
Stats
The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan areas. The data are shown in the following table. Do these data provide evidence to reject the null hypothesis that ρ = 0 in favor of ρ ≠ 0 at α =
asked by Rustie 
Math
Papa’s Pizzeria charges $12.00 for a medium cheese pizza and $1.25 for each additional topping. What will be the cost of a pizza that has pepperoni, sausage, bell peppers and onions?
asked by Daanyal 
sixth grade math
How to express 12/15 as a fraction, percent, and decimal. Someone please show me how to solve.
asked by chris 
Chemistry 11
Find the percent composition of a compound containing sodium and chlorine if 24.34g of the compound contains 13.45g of sodium. My work: Molar mass of NaCl: MNa +MCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol Percent composition of Na: 22.99 g/mol / 58.44
asked by Christina 
Advanced Math
At 9:00 a.m. the temperature was 4 degrees. It rose 35 degrees during the day. What was the new temperature
asked by Carol 
math
What would be the volume of 3ft 7ft 3ft
asked by Alondra avina olivas 
chemistry
Write the chemical equation to represent what happens when a small piece of pottasium is dropped in a beaker of water.
asked by ruth oluwayomi 
maths
A dealer allows a discount of 10% on the market price .How much above the cost price must he mark his goods to make a profit of 8%?
asked by renu 
math
Find the present value, using the present value formula. (Round your answer to the nearest cent.) Achieve $225,500 at 8.45% compounded continuously for 8 years, 145 days.
asked by emily 
english ,geo,economics,business and maths lit
what career path can i follow up on?please help
asked by zanele nyobo 
writing
Write a short paragraph that describes a discussion you recently had that demonstrates at least one of the principles of verbal communication. State the principle and explain how it applies to your example. 2.
asked by Anonymous 
physics
The Rfactor for housing insulation gives the thermal resistance in units of ft2 °F h/BTU. A good wall for harsh climates, corresponding to about 10 in of fiberglass, has R = 45 ft2 °F h/BTU. a) Determine the thermal resistance (in m2 K/W) in SI units.
asked by Anonymous 
Physics
A box is sitting at rest at the top of a ramp 3.00m long at an angle to the horizontal of 12 degrees. When the box reaches the bottom of the frictionless ramp, it falls an additional 2.00 m vertically before hitting the floor. How far from the right end of
asked by Jane 
Calculus
Find the equation of the tangent line to f(x)=x sec x at ((pi/4),(pi•sqrt 2)/4). Please check my derivative .. Is it (sin^2(x)+ 1)/cos^3 (x)?
asked by Anonymous 
English
In the sentence what did you have for dinner? Is have a linking verb? Is the word what an adverb, a direct object, or an indirect object?
asked by Kelly 
math
We did not find results for: a conical tank with its vertex down is 12 feet high and 12 feet in diameter at the top. water is being pumped in at the rate of 8 feet cubed per minute. find the rate at which the water level is rising when the water is 4 feet
asked by jacky 
Help With Statistics
I would really appreciate help with this. In a survey of 1000 large corporations, 252 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job. Find a 0.95 confidence interval for p.
asked by Mandy 
Math
Mike's age, decreased by the age of his 4 year old sister is 11. Mikes age, increased by his uncle's age is 53. How old is Mike's uncle?
asked by Alex 
math1
10x+15y=20 9x15y=21
asked by Anonymous 
Physics
show that the oscillation of a liquid in a utube is in simple harmonic motion.
asked by Ewuresi 
UNION UNIVERSITY
Find the Z score for the weights of Middle school boys which are approximately Normal, mean = 130 lbs, Standard Deviation = 7, if Johnny weighs 148 lbs, What's his Z score?
asked by SAMANTHA 
statistics
=weight of oranges in a 5lb bag ~ N(m,0.2); (a) How many customers get cheated, if E(X)=5? (proportion p=________?) (b) What should m equal so that (a) p
asked by Nicole 
Geometry
In triangle NLM, name the angle that is included between line NM and line LN? Is it line LM?
asked by Ana 
English
Part (a) – What theme do you think the poet is exploring in this poem? Part (b) – How does the poet use language in this poem to present his ideas? The poem is = FARM CHILD Look at this village boy, his head is stuffed With all the nests he know, his
asked by Daniel 
caculus
Given f″(x)=−4sin(2x) and f′(0)=3 and f(0)=−6. Find f(π/6)
asked by Hailey 
Physics
What is the horizontal component of the force of an object sloped at a 45° angle. pulling with a force of 110N.
asked by anon 
Grammar
Which sentence is correct? "All I am able to comprehend is that my brothers were right." or "All that I am able to comprehend is that my brothers were right."
asked by Victoria 
Arithmetic Progression
the sum of the first and second terms of ap is 4 and the tenth term is 19. find the sum of the 5th and 6th
asked by Josiah 
chemistry
263 mL ethanol to its mass in grams
asked by Teresa 
St Ans School
A number is as much less than 75 as it is greater than 45. Find the number?
asked by SNIGDHA 
Math
Maria has 24ft of fence.she wants to make the lalgest rectangular area possible for her dog.what length should she make each side
asked by Jessica 
English
Hello. I'll be very grateful if you help me to understand a line from a poem. And yet I am my one sole self, America seeking the stars. (Langston Hughes "America") I mean the second line. I translated it word for word but it is still very ambiguous to me.
asked by Nalmi 
physics
A truck has two wheels and the area of each wheel is 3 square meters and the total pressure exerted by the truck on the ground is 20 000Pa. Find the mass of the truck.
asked by #303 
Algebra
Consider the polynomials: F(x)= 4x^3 + 3x^2 + 2x +1 G(x)= 3  4x + 5x^2  6x^3 Find c such that the polynomial f(x)+cg(x) has degree 2.
asked by Trish Goal 
Algebra
Let f,g, and h be polynomials such that h(x)=f(x)*g(x). If the constant term of f(x) is 4 and the constant term of h(x) is 3, what is g(0)?
asked by Trish Goal 
Fine Art
"There was a wide range of influences that affected the art of the emerging modern Europe. Explain how five of these influences had an impact on art of the Italian Renaissance, and explain five influences that had an impact on art of the Rococo period" I
asked by Kylee 
Biology
When the CO2 concentration in the cells of a C3 plant is low compared with the O2 concentration, an enzyme combines RuBP with O2 rather than with CO2. What effect would this enzymatic change have on photosynthesis? Under what environmental conditions would
asked by River 
English
What personification and metaphors can I use to describe a lunch dinner hall? Any help would be very much appreciated Thank you
asked by anonymous 
Algebra
Suppose that f is a polynomial such that (x^21)*f(x)=5x^6x^5+3x^4+x^325x^2+38x17. What is the degree of?
asked by Trish Goal 
Algebra
If p(x)=x^43x+2, then find the coefficient of the x^3 term in the polynomial (p(x))^3.
asked by Trish Goal 
criminal justice
To some, the victim's rights movement is more an exercise in symbolic politics than a substantive program. As a result, some critics argue that many of these programs are really more interested in severe punishment of the defendant than in helping victims
asked by joanna 
chem
All the oxygen gas from a 22.0L container at a pressure of 72.2 kPa is added to a 18.0L container of hydrogen at a pressure of 150. kPa. After the transfer, what is the partial pressures of hydrogen?
asked by Anonymous 
chemistry
Which sample has the most solute? Question 15 options: 200. mL of 0.200 M MgCl2 150. mL of 0.250 M MgCl2 100. mL of 0.300 M MgCl2 100. mL of 0.250 M MgCl2
asked by Brendon 
math algebra
COULD SOME OF WITH DEGREE IN MATHS HELP ME TO SOLVE THIS SIMULTANEOUS EQUATION PLEASE, PLEASE ? I HAVE RIED DIFFERENT METHODS BUT IT CANNOT GET THE CORRECT ANSWER, AS IN THE BOOK. X3/4 Y2/5 = 1/4 (1) 4X/3+ 3Y/2 =  13/20 (2) 5x154y+8= 1 5x4y=171
asked by mohammad 
Science
Could give any websites that would help me find abiotic and biotic factors of the biome Aquatic. Please give as many website as possible
asked by Henna 
physics
An unidentified flying object is cruising 30.0° north of east at a speed of 2132 km/h. How fast is it moving to the north?
asked by anon 
worl history
The Indonesian name for Borneo is
asked by Anonymous 
Algebra 2
How do I solve this using the Quadratic formula and finding the determinant? 1. 5x6=0 2. x+25=0
asked by Jessica 
Math
Hi! Could someone possibly help me solve this?; log2(x+4)=log2(x^2+2). For my answer, I got "All Real Numbers" or x=0 but I'm not sure if that's right. Thanks a bunch!
asked by Sally 
Financing and Budget
This question is based the figure above. Fill in the missing lines in the balance column of this figure. Then, answer the question. What is the family's current (most recent) balance? A. $570 B. $330 C. $210 D. $0 C.
asked by Amanda 
Math Help
Solve for x: 1.) ln√x8=5 2.) log2x+log2(x+2)=log2(x+6)
asked by Porsha 
Math
3x=4+8y Find A,B, and C
asked by Skrillex 
Financing and Budget
Use the following information to fill in the Income Statement in the figure above. Then, answer the question. The period from September 1 through September 30. Sales: $1,843.00 Advertising: 20.00 Food Services: 65.80 Licenses: 58.00 Payroll Taxes: 136.90
asked by Amanda 
Physics
How fast is an object traveling after 3seconds if its terminal velocity is about 35 m/s.?
asked by anon 
calculus
7) Consider the function f(x)=(10/x^2)−(2/x^6). Let F(x) be the antiderivative of f(x) with F(1)=0. Then F(x)= ?
asked by Hailey 
English
Would down to earth be considered a character trait?
asked by Lee 
PreCalc/Trig
State the domain and range for each function. y=2x^2/(x^21) domain: ? range: ?
asked by Anonymous 
geography
what are 3 examples that make scientists believe that the continents once fit together?
asked by anthony 
Math
What is 3.9 x 4.67 equal to?
asked by Max 
Calculus  PLEASE HELP!!
Use L'Hospital's Rule to solve: lim u > 1 of (u1)^3/ ((1/u)  u^2 + (3/u)  3) Ok, so what I thought was that it is type 0/0 so taking the derivatives of the top and bottom 3(u1)^2 /(u^2 2u  3u^3) and subbing in u = 1 = 0/6 = 0
asked by Mary 
Science
Caleb is holding a metal block in his hand. What could he do to decrease the thermal energy of the block? Cool it (A) Drop it (B) Hit it (C) Melt it (D) PS. I think it is Cool It, but I do not know for sure if it is correct or not. I do not think any
asked by Gabby 
history
who were involved progressive reforms and how did they contribute to America?
asked by Anonymous 
Calculus
Differentiate. f(x)=cos x/x Is it (x sin x  cos x)/x^2
asked by Anonymous 
health
Because mood disorders such as depression substantially increase the risk of suicide, ________ is a matter of serious concern for clinicians.
asked by kendria 
math1
If a line with a slope of 2 crosses the yaxis at (0, 3), what is the equation of the line?
asked by Anonymous 
PreCalculus
Identify the slope of the asymptotes of 5(y 1)2  20(x  1)2 =64. A) 2 and 2 B) 64 and 64 C) 5 and 5 D) 0.25 and 0.25
asked by TeeKay 
science
need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion
asked by ava 
English
Which question help the reader indetify the verb modifiers in a simple sentence? a.which,what kind of ,how many,how much b.how,when,where,why,to what degree,how often c.what, whom d. to whom, for whom I am think a
asked by Anonymous 
English
1. She tried a few flight schools in china becase she wanted to be a pilot. 2. She applied for a few flight schools in china becase she wanted to be a pilot.  Does 'tried' mean 'applied for'? Or do you have some other expressions
asked by rfvv 
Algebra
If f(x) is a polynomial of degree 4, and g(x) is a polynomial of degree 2, then what is the degree of polynomial f(x)g(x)?
asked by Trish Goal 
History
What is the national monument of America?
asked by Chris 
History
Who lives in the White House?
asked by Aleksander Zdorovetskiy 
Math
the series a_n doesn't have a limit. prove that the series (1/n) doesnt go to 1. use the definiton of lim: for every epsilon>0......
asked by jerry 
PreCalculus
Use an Addition or Subtraction Formula to find the exact value of the expression: tan7π/12
asked by Christian 
math
WHAT PROPERTY OF REAL NUMBERS IS USED IN THE PROCESS OF ADDING AND SUBTRACTING RADICAL EXPRESSIONS?
asked by JUN 
maths
if a:b=3.5 and b:c=4.7,find a:b:c
asked by vandana 
World History (Ms. Sue)
Do you agree with that which I have written? "Like their fictional characters, Romantics were misunderstood or rejected by the society around them. Nevertheless, they deeply valued ordinary people and their individual experiences in everyday life. Romantic
asked by Victoria 
Early Childhood
Does the process of attachment last the child's whole life or until the child's needs are met? I think until the child's needs are met; however, my coworker thinks it should be the child's entire life.I am thinking that a healthy attachment should end at
asked by Anonymous 
Math
Determine slope using the ordered pairs 1.5,50 and 3,100 Answer : 50/1.5?
asked by M 
Math
What is a trend line
asked by M 
Chem
Define IE, and explain why Na has a smaller value than Cl in terms of ion stability (Na+1 versus Cl+1). Would it be Na? But I can't explain why?
asked by Feather 
Physics help
an isolated container holding 5 kg of sulfuric acid is at 60 C. if 2.49x10^5 Joules of energy were transferred out of the acid, what would be the new temp. of the acid?
asked by HELP 
Math HELP!
Please help me write an equation for these two: Ten fewer than the number of band instruments is 47 instruments. The number of meters decreased by 25.6 is 84.3 meters
asked by Anon 
Intermediate algebra
How many quarts of water must be mixed with 8 quarts of a 25% salt solutions to obtain a 17.5% salt solution?
asked by Taylor 
history
11. By the 1840s the canals were outdone by the _____________________ in ability to move people and goods across distances quickly and inexpensively.
asked by Anonymous 
algebra
An exponential function passes through the points (2,3), (9,33), (15,K). What is the value of K?
asked by Taylor 
Math
Simplify. State which property you used. 14 + 7x + 16
asked by Anonymous Steve 
Health
Systole is the ________ phase of the cardiac cycle
asked by Ry'Eisha 
spanish
Te banas o te duchas regularmente?
asked by carla 
Math
Roy works at happys restaurant. He works 30 hrs a week. Last week he earned $130 of which $40 was tips. How much is he paid per hour?
asked by Asheley 
statistics question
Thank you in advance for anyone able to help me with this... In a sample of 67 randomly selected students, 27 favored the amount being budgeted for next year's intramural and interscholastic sports. Construct a 98% confidence interval for the proportion of
asked by linda 
history
how did political machines and bosses take advantage of American People?
asked by Anonymous 
Math
The number of meters decreased by 25.6 is 84.3 meters.
asked by Anon 
Maths
the length of a rectangle L metres and the width of the rectangle is W metres. Each measurement is correct to the nearest cm. Find, in terms of L and W the difference between the lower bound and the upper bound of the area of the rectangle.
asked by Graham 
math
If the ratio is students in a class is 8 to 5 and there are 135 more boys then how many girls are in the class
asked by Anonymous 
Math
In any rhombus one angles is 60 and perimeter is 40 meter. Longer diagonal will be
asked by Arijit Kumar 
science
biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they
asked by ava 
science
how do i find the percent. then lable it on a smaller diagram
asked by jacob 
PreCalculus
Simplify the trigonometric expression: cos^3x+sin^2x cos x
asked by Drue 
math
Oregon, 2 1/4 %per month
asked by Isis 
Math
Determine slope using 1,30 and 3,100 Answer : y=35x5?
asked by M 
Chem
Define electron affinity, and explain why Na has a less exothermic value than Cl in terms of ion stability (Na1) I know the definition part is Na less esothermic because Na has more energy? But why?
asked by Feather 
Math
Determine slope using the ordered pairs 1.5,50 and 3,100
asked by M 
math
melanie has 9 gallons of juice and shelby has 16 quarts of juice.How many gallons of the did the two girls have?
asked by beanca 
Inverses of functions
−9+f−1(a−1)=−12 f(−3)=2
asked by Brittany 
Math
Rules on multiplying Monomial to monomials ; Monomial to Binomial : Binomial to Binomial ; Binomial to Trinomial ?
asked by Anonymous 
English
She didn't give up and went to see a famous Chinese general, the head of another flight school.  Instead of 'head,' can we use 'principal'? Or can we use some other similar expressions?
asked by rfvv