Questions Asked on
October 15, 2012

algebra
Which set represents a Pythagorean triple? 27, 38, 42 33, 44, 55 35, 38, 42 68, 72, 81 Which number completes the Pythagorean triple: 12, 16, ____? 18 20 22 24 A base ball diamond is square. The distance from home plate to first base is 90 feet. In feet,
asked by geny 
physics
The 20g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58 ft long and is represented in the figure below. Assume an astronaut in training sits in a seat at one end, facing the axis of rotation
asked by Ania 
Chemistry
Balance the equation and write the reactionquotient expression, Qc. U(s) + F2 (g) UF6 (g)
asked by Andrea 
Chemistry
The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy
asked by Amanda 
physics
How much heat is necessary to change 500g of ice at10 celsius to water at 20 celsius?
asked by erica 
chemistry
Given the balanced equation for the decomposition of INO, and the rate of disappearance of INO, write the expressions for the rates of appearance of I2 and NO 2INO(g) > I2(g) + 2NO(g) Reactant: Product(I2): Product(NO): ∆[INO]/2∆t = ??/?? = ??/??
asked by Brunette 
Chemistry Lab
Hydrogen gas was collected over water in a eudiometer at 26 degrees celcius when the atmospheric pressure was 756 mm Hg. What was the pressure of the H2 gas?
asked by Heather 
Chemistry
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter
asked by Amanda 
chemistry
Nitric oxide (NO) can be removed from gasfired powerplant emissions by reaction with methane as follows: CH4(g) + 4NO(g) > 2N2(g) + CO2(g) + 2H2O(g) Complete the equation relating the rates for each of the following: a) the rate of appearance of N2 to
asked by Brun 
PreCalculus
A piano tuner strikes a tuning fork for note A above middle C and sets in motion vibrations that can be modeled by the equation y = 0.001 sin 880 Pi(T). Find the amplitude and period for the function.
asked by Anonymous 
chemistry
for depolarization of 1 mole of KMnO4, the moles of H2O2 required is_________
asked by krishna 
Physics
A tennis ball is dropped from 1.80 m above the ground. It rebounds to a height of 1.00 m (assume down to be negative). (a) With what velocity does it hit the ground? (b) With what velocity does it leave the ground? (c) If the tennis ball were in contact
asked by Confused 
Calculus
f(theta)= 4sec(theta)+ 2tan(theta), 0 less than theta less than 2pi. find all critical numbers
asked by Ashley 
Chemistry
Given N2(g) + 3H2 = 2NH3(g), which scenario will allow you to eventually reach an equillibrium mixture involving these chemicals? A. Place only H2 into a sealed vessel. B.Place only NH3 into a sealed vessel. C.Place only N2 into a sealed vessel. D.All of
asked by kina 
physics
3. A satellite of mass 500 kg orbits the Earth with a period of 6000 s. The Earth has a mass of 5.98 x 1024 kg. (a) Calculate the magnitude of the Earth's gravitational force on the satellite. (b) Determine the altitude of the satellite above the Earth's
asked by BO 
Physics
A surfer is catching a wave. Suppose she starts at the top of the wave with a speed of 1.3 m/s and moves down the wave until her speed increases to 8.0 m/s. The drop in her vertical height is 2.8 m. If her mass is 59 kg, how much work is done by the
asked by Sam 
Physics
As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 28.2 %. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the
asked by Danielle 
Physics
7. A stock person at the local grocery store has the job of 1) picking up boxes of tomatoes from the stockroom floor, 2) accelerating to a comfortable speed, 3) Carrying the boxes to the tomato display at constant speed, 4) decelerating to a stop, and 5)
asked by BO 
Chemistry
why is it important to add 1M HCl dropwise to the crucible?
asked by SA 
geometry
Yuki just bought a big screen TV set. The screen has a diagonal measure of 40 in. If the screen is 32 in. wide, how high is it?
asked by Louise 
PHYSICS
A skateboarder starts at point A in the figure(Figure 1) and rises to a height of 2.64 m above the top of the ramp at point B. What was the skateboarder's initial speed at point A?
asked by RoCu 
trig
A plane is flying 12,000 feet horizontally from a tall, vertical cliff. The angle of elevation from the plane to the top of the cliff is 45degrees, while the angle of depression from the plane to a point on the cliff at elevation 8000 feet is 14degrees.
asked by Mae 
Math
The number N of bacteria in a refrigerated food is given by N(T) = 10T2 − 20T + 700, 1 ¡Ü T ¡Ü 20where T is the temperature of the food in degrees Celsius. When the food is removed from refrigeration, the temperature of the food is given by T(t) = 5t
asked by Kristi 
chemistry
The reaction Cl(g)+ O3(g) > ClO(g)+ O2(g) is the firstorder in both reactants. Determine the pseudofirstorder and secondorder rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or
asked by Brun 
College Algebra
The campus of a college has plans to construct a rectangular parking lot on land bordered on one side by a highway. There are 720 feet of fencing available to fence the other three sides. Let x represent the length of each of the two parallel sides of
asked by Cameron 
physics
A cyclist is coasting at a steady speed of 17m/s but enters a muddy stretch where the effective coefficient of friction is 0.60. What will be the speed upon emerging?
asked by Anonymous 
college chemistry
Please be specific! Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged calculated mass of Ca2+ in the analyzed tablet. a)a student had difficulty decanting the supernatant solution from the test
asked by anne 
chemistry
2C6H6(l) + 15O2(g) > 12CO2(g)+ 6H2O(g) how to calculate the ratio?
asked by ev 
Math
Show how to make one addend a ten. Complete the new addition sentence. 22+49= ?  +  =
asked by Ni 
chemistry
The reaction Cl(g)+ O3(g) > ClO(g)+ O2(g) is the firstorder in both reactants. Determine the pseudofirstorder and secondorder rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or
asked by Brun 
Literature
2. In The Call of the Wild, the bond between Buck and Thornton is best explained by observing that A. dog and man were like mirror opposites. [B. dog and man were both in touch with their primordial nature.] C. Buck had helped Thornton pay off his debts.
asked by jake 
university physics
Two forces act on a 4.00kg object in a manner that the object has an acceleration 3.00 m/s2 in a direction 20.0° north of east. The first force is 15.00 N in a direction 10.0° west of north. What is the second force?
asked by mike 
elementary
Draw an array. Then write a fact family to describe your array
asked by josh 
Calculus
A pebble is dropped into a pond, causing ripples in the form of concentric circles. The radius r of the outer ripple is increasing at a constant rate of 2 feet per second. When the radius is 10 feet, at what rate is the total area A of the disturbed water
asked by Anonymous 
math
The scatter plot shows the study times and test scores for a number of students. How long did the person who scored 81 study? A. 50 minutes B. 81 minutes C. 16 minutes D. 100 minutes helppppppp!!!!!
asked by jose 
chemistry
an ionic equation has 2H+(AQ)on the left side and H2(g) on the right. Are these species spectators? explain.
asked by natasha 
physics
the frequency of middle C on a piano is 261.6hz. What is the wavelength of sound as it travels @room air and in water?
asked by tiffany 
graphs Math
how could I redraw the graph so that the change in customers between the two months does not seem so great? Do I start from zero? Intervals by 5? Any other advice before I start?
asked by Moby 
Algebra
he spreadsheet shows the length of 3 movies in each of 3 categories. Choose the formula that could be used in cell B2. A B C D E 1 Type of Movie Movie 1 (min. long) Movie 2 (min. long) Movie 3 (min. long) Mean Length 2 Animated 72 63 84 73 3 Drama 92 104
asked by Algebra 
Physics
A pitcher throws a 0.140kg baseball, and it approaches the bat at a speed of 50.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above
asked by Ben 
Physics
A 1600kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 32 m/s. Going up a hill, the car's engine produces 54 hp more power to sustain the constant velocity than it
asked by Sam 
Math
Show his to make one addend a ten. Complete the new addition sentence. 15+37=?  +  =
asked by Ni 
TRIG.
From a point 50 feet in front of a church, the angles of elevation to the base of the steeple and the top of the steeple are 35° and 47° 20', respectively. Find the height of the steeple. I missed class this day and have no idea how to go about this
asked by Daisy 
Physics
A skier is gliding along at 5.0{\rm m/s} on horizontal, frictionless snow. He suddenly starts down a 15{\rm ^{\circ}} incline. His speed at the bottom is 15{\rm m/s} .
asked by Denika 
chemistry
Please be specific! Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged calculated mass of Ca2+ in the analyzed tablet. a)a student had difficulty decanting the supernatant solution from the test
asked by claire 
Physics
Florence who weighs 120lb stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is accelerating upward at 4.0 m/s^2 a) 120lb b) 135lb 3) 105lb d) 90lb
asked by Joey 
Newton's law
7. A uniform flexible chain of length l, with weight per unit length lamba, passes over a small, frictionless, massless pulley. It is released from a rest position with a length of chain x hanging from one side and a length lx from the other side. Find
asked by Ringo 
Algebra
A school planned to buy x calculators for a total cost of Ksh 16200. The supplier agreed to offer a discount of Ksh 60 per calculator. The school was the able to get three extra calculators for the same amount of money. (a) Write an expression in terms of
asked by Anonymous 
physics
A man claims he can safely hold on to a 11.90 kg child in a headon collision with a relative speed of 117. mi/h lasting for 0.140 s as long as he has his seat belt on. (a) Find the magnitude of the average force needed to hold onto the child.
asked by lib 
chemistry
What is the bonding continuum?
asked by Tes 
Chemistry
I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are
asked by Lana 
Math( < > )
Find clues to the mystery number , the number is less than 800 but greater than 780 , it has 8 more 10's than 1's _________.
asked by Blaine 
physics
A skier slides down a slope to the left at a constant speed.
asked by nhan 
Physics
An elevator weighing 10 000N is supported by a steel cable. Determine the tension in the cable when the elevator is accelerated upward at 3.0 m/s2 A) 7.0kN B) 10.0 kN C)11.6 kN D) 13.1 KN E) 40.0 kN
asked by mike 
Physics
A farmhand pushes a 23kg bale of hay 4.0m across the floor of a barn. If she exerts a horizontal force of 91N on the hay, how much work has she done?
asked by RoCu 
science
i need an acrostic poem of the word eukaryotic
asked by karina 
Chemistry
Using data from the following reactions and applying Hess's law, calculate the heat change for the slow reaction of zinc with water (answer must be in kJ/mol Zn): Zn(s) + 2 H2O(l) > Zn^2+(aq) + 2 OH(aq) + H2(g) (ΔHrxn = ?) H+(aq) + OH(aq) >
asked by Amanda 
Chem II
A sample of gas at 38 degrees Celsius occupies a volume of 2.97 L and exerts a pressure of 3.14 atm. The gas is heated to 118 degrees Celsius and the volume decreased to 1.04 L. Determine the new pressure exerted by the gas.
asked by Layn 
physics ..PLEASE HELP ASSIGN DUE SOON :(
A charge is to be placed at the empty corner to make the net force at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner if the three charges have the same charge of +7.63 μC?
asked by joane 
Chemistry
I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are
asked by Lana 
Physics PLEASE HELP
In a Broadway performance an 80.0 kg actor swings from a 2.05 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 47.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before
asked by Anonymous 
Chemistry
write the conjugate acid of this base. PO4^3
asked by Stacy 
geometry
Each side of a equilateral triangle measures 12 cm. Find the height, h of the triangle.
asked by Louise 
Chemistry
The alcohol in gasohol burns according to the reaction C2H5OH(l) + 3O2(g) > 2CO2(g) + 3H2O how many grams of water are produced when 3.0 moles of C2H5OH are burned in an excess of oxygen gas?
asked by Lana 
Physics
Consider two vectors F~ 1 with magnitude 44 N inclined at 163 ◦ and F~ 2 with magnitude 72 N inclined at 236 ◦ , measured from the positive x axis with counterclockwise positive. What is the magnitude of the resultant vector F~ 1 + F~ 2 ? Draw the
asked by Diego 
Math
A school planned to buy x calculators for a total cost of Ksh 16200. The supplier agreed to offer a discount of Ksh 60 per calculator. The school was the able to get three extra calculators for the same amount of money. (a) Write an expression in terms of
asked by Anonymous 
Literature
5. As we find with most songs, in poetry [A. there's no specific point of view.] B. each couplet must rhyme. C. sound and content have equal weight. D. meanings are hidden in imprecise words.
asked by jake 
chem
The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy
asked by greg 
U.S history
okay i want to check and see if my answers are corrects before i submit my stuff. can someone help ? i think i know the answers but the questions are: 1. The cotton gin changed agriculture in the South by (1 point) A. simplifying the planting process. B.
asked by day 
Physics
A 1800kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 28 m/s. Going up a hill, the car's engine produces 52 hp more power to sustain the constant velocity than it
asked by Darren 
Physics URGENT!!!
A 4.02 kg steel ball strikes a massive wall at 11.8 m/s at an angle of 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle, as shown in the figure below. If the ball is in contact with the wall for 0.174 s, what is the
asked by Anonymous 
Physics URGENT!!!
Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snowcovered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who is initially at rest, hops
asked by Anonymous 
Government
Write a 1,000word report on two different ways that you, as a young citizen, can become active in politics that would help promote causes that you believe in. You may choose a specific organization that is politically active. In the report, tell the goals
asked by Rachel 
Math
A telephone is anchored to the ground by a long cable called a guy wire, at a point 5 meters from the base of the pole, the wire makes an angle of 72.5 degrees with the horizontal. What is the length of the guy wire? HELP ASAP! I forgot how to compute for
asked by Sofia 
Math
Trish says that if 5/7 of her pencils are yellow, then 2/7 are not yellow. Is she correct. Explain
asked by arianna 
PHYSICS
At an amusement park, a swimmer uses a water slide to enter the main pool. The swimmer slides without friction, and descends through a vertical height of 2.98m. Find the swimmer's speed at the bottom of the slide if she starts with an initial speed of
asked by RoCu 
Physics HELP!!
A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back cover are perpendicular to the book and are horizontal. The book weighs 29.7kg. The coefficient of static friction between his hands and
asked by joane 
Chemistry
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 3.60 MJ of energy (in the form of heat) if the temperature of the sodium is not to increased by more than 10.0 °C? Use CP = 30.8
asked by Garcia 
Physics
A 74.1 kg climber is using a rope to cross between two peaks of a mountain as shown in the figure below. He pauses to rest near the right peak. Assume that the right side rope and the left side rope make angles of 48.0° and 11.16° with respect to the
asked by LS 
Math
A baseball diamond is a square with sides 22.4m. The pitchers mound is 16.8m from home plate on the line joining home plate and second base. How far is the pitchers mound from first base? Step by step please.
asked by Nikki 
physics
Standing on a balcony, you throuw your keys to a friend on the ground below. 1.2 seconds after releasing the keys, they have an instantaneous velocity of 14.8 m/s directed 53 degrees below horizontal. What initial velocity did you give them?
asked by Anthony Grottini 
math
A water trough is 4 m long and its crosssection is an isosceles trapezoid which is 210 cm wide at the bottom and 280 cm wide at the top, and the height is 70 cm. The trough is not full. Give an expression for V, the volume of water in the trough in cm^3,
asked by j 
Math
Show how to make one addend a ten. Complete the new addition sentence. 38 + 25=?  +  =
asked by Melissa 
physics
a student stands on an elevator scale at rest on the 64th floor of a building. the scale reads 847 N. As the elevator moves up the scales increases to 923 N, then decreases back to 847 N. the acceleration of gravity is 9.8m/s^2. Answer in units of m/s^2
asked by Emily 
english
Roman was an orphan who had barely survived in a war camp.
asked by Halleberry 
s.s.
"unemployment leads to wastage of man power resource" justifythe statement with suitable examples.
asked by dev 
Physics
A little red wagon with mass 7.0kg moves in a straight line on a frictionless horizontal surface. It has an initial speed of4.00 m/s and then is pushed 3.0m in the direction of the initial velocity by a force with a magnitude of 10.0 N a.) Use the
asked by Frankie 
Chemistry
How many milliliters of 7.00M HCl solution are needed to obtain 0.200mol of HCl?
asked by Chris 
Chemistry
How many moles of KBr are present in 120mL of a 0.290M solution?
asked by Chris 
College Chemistry
We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid
asked by Alex 
Calculus
Find the dervatives: 1. f(x)=(3x+1)e^x^2 2. y = e^(sin x) ln(x) 3. f(x)=(x^(2)+x)^23 4. f(x)=sin(2x)/cosx 5. square root of x/(3x+1) 6. f(x)=sin^4(3x=1)sin(3x+1) 7. x+y=cos(xy) The answers I got: 1. 6x^(2)e^(x^2)+2xe^(x^2)+3e^(x^2) 2. e^sinx/x +
asked by Anonymous 
Math
An 8 meters bamboo pole is leaning against a coconut tree. The foot of the pole is 3 meters from the base of the tree. What angle does the pole make with the tree if the pole reaches up to the top of the tree? HELP PLEASE!
asked by Katy 
Physics
A little red wagon with mass 7.0kg moves in a straight line on a frictionless horizontal surface. It has an initial speed of4.00 m/s and then is pushed 3.0m in the direction of the initial velocity by a force with a magnitude of 10.0 N a.) Use the
asked by Frankie 
Chemistry
The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy
asked by Amanda 
earth
The globalmean surface temperature of the earth is about 288 degrees Kelvin. Use the StefanBoltzman law to calculate the radiative flux corresponding to an object with this temperature. [hint: use σT4 with σ = 5.67x108 Wm2K4 ]
asked by Samantha 
math
meredith picked 4 times as many green apples as red apples. if she picked a total of 20 apples how many green apples did she pick?
asked by kat 
Math
Mr Collins bowling league has 48 members. If the league splits into teams of 12 members each,how many equally sized teams will there be
asked by Shion 
Grammar, punctuation
Social history revealed that he lives with his aunt and uncle does not smoke or chew tobacco and reported drinking to intoxication once a month. My answer is; Social history revealed that he lives with his aunt and uncle, does not smoke or chew tobacco and
asked by Marie 
Literature
13. Scan this line from Cowley's poem: "its hills bent low within my reach." How many feet does this line contain? A. 5 B. 7 C. 6 [D. 4]
asked by jake 
Grammar, punctuation
She experienced fever anorexia weakness and rightsided chest pain. I say the correct punctuation for this sentece is; She experienced fever, anorexia, weakness and rightsided chest pain.
asked by Marie 
science
if an object covers a large enough area of the water's surface, it can float on the water because of the________of water particles
asked by shon 
chemistry ........................chemistry
Sodium Na+ Intense yellow Barium Ba++ Green Calcium Ca++ Brick red Copper Cu+ or Cu++ Bluegreen Strontium Sr++ ? Lithium Li+ ? Sodium and potassium mixture Na+&K :yellow light Observations using the cobalt glass filter Sodium & potassium mixture
asked by Maria 
physics
Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices.
asked by lib 
Can you help me make my thesis sound clear & good
In the short story, "how much land does a man need," the author Leo Tolstoy would describe that human worth based on shallow measurements such as wealth and possessions make true love and humanity impossible because of greediness, the devil filling our
asked by Erin 
algebra
2st squared s squared. S=4 t=8
asked by Melissa 
Chemistry
Zinc dissolves in acid according to the balanced reaction: Zn(s) + 2H^+(aq) > Zn^2+(aq) + H2(g) A sample of zinc is placed in the ice calorimeter. If 0.0657g of zinc causes a decrease of 0.109mL in the ice/water volume of the calorimeter, what is the
asked by Kjd 
Calculus
Find dy/dx using implicit differentiation of xy + sin^2y=10350. Is it y/(x+2siny)
asked by Bill 
College algebra
What is the domain for X³+2X²9X18
asked by MEghan 
PHYSICS
A 0.26kg rock is thrown vertically upward from the top of a cliff that is 32m high. When it hits the ground at the base of the cliff, the rock has a speed of 29m/s. 1) Assuming that air resistance can be ignored, find the initial speed of the rock ? m/s
asked by RoCu 
Physics
A golf ball of mass 30.0 grams is struck by a 4.00 kg golf club for a time of 3.00 ms. If the golf ball obtains a velocity of 25.0 m/s after being struck then with what force did the club strike the golf ball? a. 2.50 N b. 7.50 N c. 250 N d. 750 N e. 25.0
asked by Tiffany 
Physics
A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline that is 1.27m long. The coefficient of kinetic friction between the block and the incline is 0.34. The external force holding the
asked by Alphonse 
Physics
A skier is gliding along at 5.0{\rm m/s} on horizontal, frictionless snow. He suddenly starts down a 15{\rm ^{\circ}} incline. His speed at the bottom is 15{\rm m/s} . What is the length of the incline? How long does it take him to reach the bottom?
asked by Denika 
Math
Janet drove 304 Kilometers and the trip took 4hours. How fast was Janet traveling?
asked by Kay 
physics
A spy in a speed boat is being chased down a river by government oﬃcials in a faster craft. Just as the oﬃcials’ boat pulls up next to the spy’s boat, both boats reach the edge of a 5.1 m waterfall. The spy’s speed is 17 m/s and the oﬃcials’
asked by Anonymous 
Language Arts
He fell like a leaf tossed down the wind, down, down, with one cry that overtook Daedalus far away. When he returned, and sought high and low for the poor boy, he saw nothing but the birdlike feathers afloat on the water, and he knew that Icarus was
asked by Taylor 
Early Child Care
the ability to put an object or group of objects in a logical series based on a property of those objects is: A) seriation B) phonemic awareness C) classification D) attribution
asked by anna 
Trig
From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the oppisite side of the runway are 6 degrees and 13 degreess respectivel. The points and the tower are in the same vertical
asked by Nikki 
math
Use properties of logarithms to expand each logarithmic expression as much as possible. Where possible evaluate logarithmic expsressions without using a calculator. logb x^7
asked by Ashley 
Physics
if you were on a 22.7 degree slope and an avalanche started 425 m up the slope, how much time would you have to get out of the way, there is no friction.
asked by Tanya 
Chem II
What mass of oxygen gas exerts a pressure of 475 mm Hg in a volume of 1.25 L at a temperature of 22 degrees Celsius.
asked by Layn 
computer science
Write an Assembly program to determine the price of a car rental. The car being rented costs $45 per day and frequent renters get a $15 discount on the total bill. Get as input, the number of days rented and whether the user is part of the frequent renter
asked by icysnow 
chemistry
2) Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 25.8 g of toluene and 135 g of benzene.
asked by Mike 
Algebra
Give the domain of (f  g)(x) and (g of f)(x) where f(x)=3 x and g(x)  ã(x)
asked by Kristi 
algebra 1
A passenger plane and a jet leave att the same time from the same airport,traveling in opposite directions. The jet travels at twice the speed of the passenger plane. they are 2400 mi apart in 4 hours. Find the speed of the passenger plane and jet.
asked by Victoria 
college orgo
calculate how to make 10 mL of 15:85 ethyl acetate:hexane solution from 2 mL of 5:95 ethyl acetate:hexane, using pure hexane and pure ethyl acetate.
asked by sara 
grammar
If it tells you more about a noun, it’s a/an ________. A) adjective B) adverb C) noun D) pronoun E) verb I answered d
asked by Marie 
English
Identify the world in bold type. Do you know someone who can fix a lamp? (A) demonstrative pronoun (B) indefinite pronoun (C) interogative pronoun (D) relative pronoun (E) not a pronoun
asked by Anonymous 
physics
what frequency of sound travels in air @20 degree C has a wavelength equal to 1.7m?
asked by tiffany 
Biology
How does long term survival of a species depend on resources that may be limited from time to time?
asked by Fahad 
physics
A box of books weighing 324 N is shoved across the floor by a force of 527 N exerted downward at an angle of 35 below the hori zontal. The acceleration of gravity is 9.81 m/s2 . If μk between the box and the floor is 0.59, how long does it take to move
asked by Tanya 
math
there are 28 students in a class 16 are girls what fraction are boys
asked by arron 
Math
Five apples cost $4.90.how much does each apple cost
asked by Shion 
physics
Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices.
asked by lib 
physics
In the past, ships often carried small cannons that wer used when approaching shore in a dense fog to estimate the distance to the hidden land. How would this work?
asked by tiffany 
Chemistry
Balance MgCO3 > CO2 + MgO
asked by Stacy 
Biology
3) The following statements are generalizations about cell signaling events made by a student with a basic knowledge of biology (a little knowledge is a dangerous thing). Your professor has requested that you tutor this student. You note that in each case
asked by melody 
Physics URGENT!!!
A 41.8 kg girl is standing on a 142. kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.40 m/s to the right relative to the
asked by Anonymous 
AP Chemistry
A balloon is filled to a volume of 2.0 102 mL at a temperature of 33.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 102 K. What is the final volume of the balloon?
asked by Ashley 
Math 8R  HELP!
Simplifying Algebraic Expression Using the Distributive Property & Combining Like Terms Solve: 4 (g +7) = 64 4g + 4(4) = 64 4g + 16 = 64 I'm getting a bit confused and struggling a lot in this problem. Please help me!
asked by Laruen 
algebra
what is subtitition
asked by regine 
Calculus
a square is defined by the unit vectors i(vector) and j(vector). FInd the projections of i(vector) and j(vector) on each of the diagonals of the square.
asked by Jennifer 
Grammar
An adjective can be either one word or a group of words. True or False
asked by Marie 
physics
Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices.
asked by lib 
s.s.
what made pinochet unpopular in chile?
asked by dev 
6th grade math Statistics and Graphs
If I were to do a survey on how many students have pets in my class should I include the zero amount of kids that didn't have pets in my calcualtion?
asked by Billy 
MATH
150% OF 16.00
asked by booker 
Physics URGENT!!!
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at
asked by Anonymous 
pharmacy
Where would you find information on drug interactions in an older style drug monograph
asked by Anonymous 
physics
An arrow is shot horizontally from a 50 m cliff with a velocity of 15 m/s. As the arrow travels in its parabolic path, its new height some time later, is 24 m. Calculate the instantaneous velocity of the moment it reaches is new height.
asked by Daniel 
Chemistry
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter
asked by Amanda 
Calculus
Air is being pumped into a spherical balloon and the volume is increasing at the rate of 100 cubic cm per minute. How fast is the radius of the balloon increasing when the radius is 10 cm? (V=4/3 times pie times r^3)
asked by Anonymous 
English
Which word is opposite of establish? acquit deem devastate discredit elusive generate idolize ingratitude keepsake mortal ovation petty plight repent reverie revocation scan strand strife ropple
asked by Jerald 
Chemistry
How many photons with a wavelength of 450 nm is required to have mass of 1.25 micrograms?
asked by Michelle 
Subjects and Prepositions.
What is the compound or simple subject and compound or simple predicate in each sentence? draw t the line between the complete subject and complete predicate in each sentence. 1. People of all ages and abilities love sports. 2. More than 2 million
asked by Kimberly 
Grammar
For a sentence to be complete, it must be a complete thought and have two parts. The second part it must have is a/n ________. A) predicate B) subject C) subject I answered with A
asked by Marie 
math
An observer of height h stands on an incline at a distance d from the base of a building of height T. the angle of elevation from the observer to the top of the building is theta and the incline makes an angle of alpha witht he horizontal. Express T, in
asked by Annmarie 
accounting
in order for companies to prepare and issue financial staements, their accounting equations (debit and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement.
asked by mya 
math
Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU B. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO C. 100.01 PRO, 100.1 BLU, 010.1 ABR, 004.15 KWA D. 004.15 KWA, 010.1 ABR,
asked by gerlaine 
oceanography
14C has a halflife of 5,730 years. If we start with 70 grams of 14C at time zero how many grams of 14C will be left after three halflives?
asked by teal 
Chemistry 101
75.0 G tartaric acid in 1 liter is what Molarity (moles/liter)? mw=150.087 g/mol
asked by Renee 
algebra
A stone dropped from rest travels 160 ft the first 3 seconds. How far will it have fallen at the end of 5 seconds?
asked by tracey 
Grammar
A/an ________ has a different form depending on how it is used. A) adjective B) adverb C) noun D) pronoun E) verb I answered d
asked by Marie 
chemistry
A 2.622 g sample of almonds is ignited and used to melt ice in a can. a. If the almond sample melted 15.24g of ice what is the heat produced in Kcal grams of nuts? d.If the heat from the almond sample was used to heat 100mL of water at 0.0 degree
asked by Anthony 
chemistry
calculate the relativistic mass of 1.81x10^24 photons (3.00 mol) with wavelength of 450 nm.
asked by matt 
Calculus
Find the equation of the tangent line to the graph of the function f(x)= 2x^3−3x^2+4x+2 at x=2 I got y=16x12 but I know it is wrong.
asked by Anonymous 
Physics
The mass of a robot is 5489.0kg. This robot weighs 3646.0N more on planet A than it does on planet B. Both planets have the same radius of 1.33 x 107 m. What is the difference MA  MB in the masses of these planets?
asked by LS 
government
Despite their differences, the Founding Fathers all agreed that _____.
asked by Anonymous 
math
how much oxygen is required to convert total so2 into so3 tell me the percentage ratio of so2:o2 the reaction is so2+1/2o2=so3
asked by himanshu dave 
Calculus
Assuming that f and g are functions differentiable at a (though we do not know their formulas). Prove that f +g is differentiable at a using the definition of the derivative.
asked by Marissa 
statistics
random sample of n = 16 scores is selected from a normal distribution with a mean of μ = 50 and standard deviation of σ = 10. a. what is the probability that the sample mean will have a value between 45 and 55? b. what is the probability that the sample
asked by angela 
Calculus
y=sqrt(x)^1/x. Find dy/dx That is to the power of 1/x So to start this do I need to take Ln on both sides and then use a logarithm property? Ln(y)=lnx^1/2x?
asked by Greg 
COMPUTER SCIENCE JAVA
Assignment problems: Write Java programs for each of the following. 1. Students in a university class are being organized into groups of three for an upcoming research project. To model this situation: a. Write a Student class that stores the name, email
asked by AHMED 
Grammar
A/an ________ is a sentence that is created by joining two independent clauses with a comma. A) comma splice B) fragment C) runon I answered A
asked by Marie 
statistics
3. Consider selecting a starting line up for an intermural 6on6 indoor soccer team where you are required to have 4 students and 2 faculty on the court at all times. As everyone on your team have equal skills, you decide to randomly assign members to
asked by ami 
math URGENT!!
a rectangular box measures 4 by 5 by 2 meters. what is the length of the longest pole that can fit into the box?
asked by dan 
Algebra
4ã(50x)+3ã(2x)+ã(72x) Combine. Assume that all variables represent nonnegative real numbers.
asked by Becky 
physics
If the pelican was traveling at the same speed but was only 2.3 m above the water, how far would the ﬁ!@#$%^&ravel horizontally before hitting the water below? Answer in units of m
asked by Anonymous 
Math
If I make a porch that is 60 feet in length, 50 feet wide and 4 inches deep, how do I calculate the area, perimeter, and surface area of the porch? Can I multiply feet and inches in the same equation?
asked by Sonya 
Physics
wo very small spheres are initially neutral and separated by a distance of 2.73 m. Suppose that 2.60E+13 electrons are removed from one sphere and placed on the other. What is the magnitude of the electrostatic force that acts on each sphere?
asked by Sarah 
math
I am thinking of a number. If I add 4 to it, square the result, divide that result by 20, and subtract 4, the infal result is 1. What is my number
asked by Clayton 
Statistics
Over a period of about nine months, 1,353 women reported the timing of each of their menstrual cycles. For the first cycle reported by each woman, the mean cycle time was 28.86 days, and the standard deviation of the 1,353 times was 4.24 days. (a)
asked by Sseemee 
social study
explian any three factor which lead to the incident known as bloody sunday
asked by dev 
s.s.
who was the leader of the jacobin club?state any four laws indroduced by him
asked by dev 
algebra
Using the equation y=2x5 a. The slope of this line is b. The y intercept of this line is c. The x intercept of this line is
asked by j.wallace 
Science 8R  Homework Qs. Check
If an object has mass of 70.5g and a volume of 64 cm(3), what is its Density? Will it sink or float and why? Answer  The Density of this object is 4512g/cm(3). It will sink because the amount of grams is a lot. Is the answer correct and good???? I
asked by Laruen 
calculus
Differentiate: f(x)=(secx)/[1+sec(x)]
asked by Chelle 
math
Suppose a certain economy's consumption function is as follows, where C(x) and x are measured in billions of dollars. C(x) = 0.76x^1.1 + 18.19 Find the marginal propensity to consume (dC/dx) when x = 7. (Round your answer to three decimal places.)
asked by tee 
Physics
In a Physics laboratory class, an object of mass 2.1 kg, attached by massless strings to two hanging masses, m1= 1.0 kg and m2= 4.0 kg, is free to slide on the surface of the table. the coefficient of kinetic friction between m2 and the table is 0.30.
asked by Ashley 
Math
As a realtor, you earn 7% of the sale price. The owners have the house listed for $150,000 and will entertain offers within 10% of the list price. Write an equality that models the commission you could make on this sale.
asked by Rachel 
Grammar
A noun can be either one word or a group of words. True or False I know this ones got to be false
asked by Marie 
Calculus
Determine an equation of the tangent line to the curve of f (x) = 3e^4x − 3 at the point where the curve crosses the yaxis.
asked by Anonymous 
Grammar
The verb with all its modifiers is the complete ________. A) predicate B) subject I answered Predicate
asked by Marie 
Chemistry
A calorimetric determination of specific heat and enthalpy of solution was performed. How would each of the following procedural changes affect (higher than the correct value, lower than the correct value, or no change) the value of the specific heat of
asked by Amy 
Box and whisker plot math
How do I read a boxandwhisker plot ?? Please help with example if you can?? Thank you so much.
asked by Billy 
Grammar
Grammatically speaking, a/an ________ is a group of 2 or more words that does not contain a subject or a verb. A) clause B) phrase C) sentence I answered b
asked by Marie 
Early Child Care
When Curriculum planning for cognitive development among infants and toddlers, the environment should contain; A) the same solid color throughout B) an absence of decorations C) a pattern without contrast or bright color D) soft items such as pillows and
asked by seema 
Physics
A 27.0kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 71.0N and is directed at an angle of 30.0deg above the horizontal. Determine the coefficient of kinetic friction.
asked by Danielle 
Algebra
It takes matt 9 hrs longer to build a wall than it takes chris. Working together they can build the wall in 20hrs. how long would it take each working alone to build the wall?
asked by sami sun 
Psychology
What is biological influences?
asked by Chi 
Psychology
What is biological influences?
asked by Chi 
Physics URGENT!!!
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at
asked by Anonymous 
Physics Elena please help!
In a Broadway performance an 80.0 kg actor swings from a 2.05 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 47.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before
asked by Anonymous 
chemistry
Why do halogens tend to form diatomic molecules?
asked by Tes 
chemistry
4) An aqueous solution is 1.65 m glucose. What are the boiling point and freezing point of this solution?
asked by Mike 
english
What is on batteries in the following sentence: These clocks often run on batteries. A. Main verb B. Helping verb C. Both D. Neither Is it D Thanks
asked by B 
accounting
•In order for companies to prepare and issue financial statements, their accounting equations (debits and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement
asked by mya 
algebra
Bad boy is fleeing the scene of a crime at 75 mph. Half an hr. later the police chase after him following his same routetraveling at 90 mph. Bad boy thought he got away... but he didn't... How long had Bad boy been traveling when the police caught him?
asked by Eliza 
COMPUTER SCIENCE JAVA
Assignment problems: Write Java programs for each of the following. 1. Students in a university class are being organized into groups of three for an upcoming research project. To model this situation: a. Write a Student class that stores the name, email
asked by AHMED 
literature
What are the major events in Act I of A Doll's House?
asked by ellen 
Grammar
A simple __________ expresses one complete thought (one independent clause) with one subject and one predicate. A) clause B) phrase C) sentence I answered c, although I think it could be B also
asked by Marie 
Grammar
The object of the preposition is ________ a noun when we define a noun as a person or thing, a proper name, a pronoun, or a gerund. A) always B) never C) sometimes I answered Sometimes
asked by Marie 
algebra
how do I solve 10x198=(10xM)(10x2)
asked by Dylan 
Grammar
state of being ________ simply shows that something exists. A) adjective B) adverb C) noun D) pronoun E) verb I say it could be E
asked by Marie 
math
what is 22 times 58. My answer is 1278 am i correct
asked by americal 
Grammar
If it tells you where something is in relation to something else, it is a/an ________. A) conjunction B) preposition I answered A
asked by Marie 
Algebra
The length of a rectangle is 5 less than twice the width. Find the dimensions if the perimeter is 110?
asked by Chad 
Algebra
Solve the following equation? (14)/(x+2)  (1) / (x4) = 1
asked by minh tran 
Math
I need to find the critical value of what I have here so far, and I am stuck can someone please help ASAP ? Percent of children depressed: 4.3% 1250= n 4.3/100= s/1250 53.75= sample mean n=sample size After, mid 2010: Percent of children depressed: 5% 100=
asked by Misty 
grammar
A compound ________ is 2 or more simple sentences/complete thoughts (independent clauses) connected by a comma and a conjunction (e.g., and, or, but) or by a semicolon and no conjunction. A) clause B) phrase C) sentence I answered c
asked by Marie 
Math
some kangaroos can cover 30 feet in a single jump. if a kangaroo could jump like that 150 times in a row, how farther would it need to go to cover a mile? (1 mile=5280 feet)
asked by Malik 
Calculus 251
The slope of the tangent line to the curve y= 3x^3 at the point (1,3) is:? The equation of this tangent line can be written in the form y=mx+b where m is:? and where b is:?
asked by J 
Math 8R  HELP! (homework qs. check)
Simplifying Algebraic Expression Using the Distributive Property & Combining Like Terms Simplify: 3 (2+3x) + x  5 3(2) + 3 (3x) + x  5 Answer  6 + 3(3x) + x  5 Is the answer is correct??? I'm getting a bit confused and struggling a lot in this
asked by Laruen 
Test
Tomorrow the whole state is going to take this assessment and I'm stressing out. There is this website that I am practicing on right now and most of the math questions I don't even know. I don't know what to do and I'm worried that I'll fail the math
asked by Joy 
Math
One fourth of class takes French. One half takes Latin One third as many take Japanese as Latin students. There are 8 students taking Japanese. ***no students take more than one language How many students take French?12 How many students take Latin? 24 How
asked by Meagieting 
calculus
if i define the function f(x)= x^3x^23x1 and h(x) = f(x)/g(x), then evaluate the limit (3h(x)+f(x)2g(x), assuming you know the following things about h(x): h is continuous everywhere except when x = 1 lim as x approaches infinity of h(x) = infinity
asked by Anonymous 
chemistry
How much L and concentration of NaOH do i need to neutralize 500 L 22% HCL?
asked by rebeka 
math
Julie has a mystery number. When she divides the mystery number by 5, the remainder is 1 When she divides the mystery number by 6 the remainder is 4 When she didvides the mystery number by 7 the remainder is 6 What is the smallest number that could be
asked by stephanie 
math
i am a 3digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit, and the sum of my digits is 15. if you reverse my digits, i am divisible by 6 as well as 3
asked by bob 
Physics
A motor boat heads west across a river as a current of 12 km/hr. The speedometer reads a constant of 26 km/hr. What is the resultant velocity of the boat as compared to its original path? And what is the degree?
asked by Anna 
chemistry
Which solvent is more preferential? Solubility of a substance: water 2.0g/100ml or ether 6.3g/100ml
asked by geen 
s.s.
what is meant by "people as resorce" ?explain how is human resource diffrent from other resorces like land and physical capital?
asked by dev 
Grammar
A main ________ shows action and has a meaning on its own. A) adjective B) adverb C) noun D) pronoun E) verb I said A for my answer
asked by Marie 
science
i need to create a specimen for a diorama using vascular or nonvascular plant don't know how to begin
asked by djorge 
physics URGENT! PLEASE
Figure the resultant velocity of a plane that is traveling at 300 km/hr @ 190 degrees when he encounters the wind below a) 30 km/hr tailwind b) 40 km/hr headwind c) 50 km/hr wind blowing south
asked by Anna 
Grammar
A verb can be one word or a group of words. True or False I said false
asked by Marie 
Math Rational FunctionsPlease Clarify =)
I have a question about the rational function I recently posted. Would the range still be (∞,2)U(2,∞) if the rational function is what Reiny posted "(2x^218)/(x^2+3x10)." The yintercept confuses me because its (0,1.8) and when I look at the line it
asked by Enlia 
Physics URGENT!!!
Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at
asked by Anonymous 
math
a rectangular box measures 4 by 5 by 2 meters. what is the length of the longest pole that can fit into the box?
asked by dan 
physics
an arrow leaves a bow at 15 m/s at an angle of 45 degrees above the horizontal . how long before the arrow returns to the level it was launched from?
asked by maryum 
algebra
james collects 15 rocks. six of the rocks are smooth. the,rest of the rocks.r are rough. which equation can be used to find how many rocks are rough?
asked by stephie 
science
what science word can be formed using these letters ECREFENINE?
asked by Cheryl 
Math Statistics
I need to find the critical value of what I have here so far, and I am stuck can someone please help? Percent of children depressed: 4.3% 1250= n 4.3/100= s/1250 53.75= sample mean n=sample size After, mid 2010: Percent of children depressed: 5% 100= n
asked by Anonymous 
Biology
Compare and contrast fertilization in the mouse and the sea urchin – how they similar and how do they differ (and why?). Think about the structures, events and results. You might want to do this by breaking down the steps. Also address the key role of
asked by melody 
Biology
11) The recent Nobel Prize in Physiology or Medicine was awarded based on two sets of experiments. The first of these is described in the following abstract: An important problem in embryology is whether the differentiation of cells depends upon a stable
asked by melody 
Grammar
The phrase or word introduced by the preposition is called the ________of the preposition. A) link B) object C) subject I answered B
asked by Marie 
MATH
WHAT PERCENTAGE OF $40 IS $8? 8/40 =5% Am I on right track?
asked by booker 
chemistry
Posted by Brunette on Sunday, October 14, 2012 at 10:42pm. Values of the rate constant for the decomposition of N2O5 at four different temperatures are as follows: T(K) k(s^1) 658....2.14*10^5 673....3.23*10^5 688....4.81*10^5 703....7.03*10^5 The
asked by Brun 
math
farmer jane has only pigs and chickens o her farm. she can't remembr how many of each she has but she does know she counted 110 legs and 35 heads. assuming that each animal is normalhow many of each animal does she have
asked by Anonymous 
algebra
james collects 15 rocks. six of the rocks are smooth. the rest of the rocks,r are rough. which equation.can.be used to find how many rocks are rough? is it 15 equals 6+r or r=15+6 or 15=6r or r=15divided by 6
asked by stephie 
chemistry ......chemistry
what does Planck mean when he states that energy in quantized? Ans: plank's theory proposes that the energies absorbed or emitted by atoms are quantized ,which means that their values are restricted to certain quantities. is this O.K?
asked by Maria 
physics
what is a satellite's altitude above the surface of the earth if earth's mass is 5.98*10^24 kg and its radius is 6380 km?
asked by chris 
statistics
If total items is 7500 and 300 are tested what's percentage that 25 are bad?
asked by Anonymous 
Science
You have a stock solution of 3.5M glucose. You need a working solution of 0.5M glucose in a volume of 400ml. Explain how you make the solution. Also what is the concentration of the dilution solution?
asked by Helper 
math
Chester builds and collects models of boats and planes. He has 22 models all together chester has 8 more planes than he has boats. How many of each kind of model does he have?
asked by lesley 
Calculus
What is the derivative (tˆ2)ˆ(1/3)+2(tˆ5)ˆ(1/2)
asked by Chelle 
Physics
How far apart are a proton and electron if they experience an electric force of 5.10N?
asked by joane 
Biology
We looked at four different families of signal transduction cascades. Describe three general, common features that are, in some way, part of each of these cascades.
asked by melody 
Evolutionary Bio
How would you differentiate a monophyletic from a polyphyletic and paraphyletic? I know the definition but can someone provide me with an exmaple and an explanation for it so I can understand better? That would be greatly appreciated!
asked by M 
geometry
draw the triangle into a coordinate system of (7) to 7. Designating cathetes and hypotenuse. a)A(1/1);B(3/1);C(1/6) b)D(3/1);E(1/2);F(1/1)
asked by sabine 
Math
Evaluate the expression. 2 60÷(7+3)+3
asked by Malik 
Chemistry
Determine the Molecular weight of a compound that weighs 34g, is vaporized at 50 degrees C, at 1.05 atm, in a flask with a volume of 5.0 L
asked by Anonymous 
Chemistry
Determine the Molecular weight of a compound that weighs 34g, is vaporized at 50 degrees C, at 1.05 atm, in a flask with a volume of 5.0 L
asked by Anonymous 
math
Suppose a certain economy's consumption function is as follows, where C(x) and x are measured in billions of dollars. C(x) = 0.76x1.1 + 18.19 Find the marginal propensity to consume (dC/dx) when x = 7. (Round your answer to three decimal places.)
asked by beauty 
Physics
After a day of testing race cars, you decide to take your own 1502.5 kg car onto the test track. While moving down the track at 11.4 m/s, you suddenly accelerate to 30.2 m/s in 19.2 s. What average net force have you applied to the car during that time?
asked by Amelia 
Chemistry 101
25 ml tartaric solution is tritrated with 31 ml ammonium equation rearranged for normality of ammonium: starting with N1V1=N2V2 N1= V1= v2= final answer N2=
asked by Renee 
Grammar
Sam confidently placed th oars in their locks and started to pull, but we didn't move. Do I need a comma after but in th above sentence?
asked by Dakota 
physics
how to calculate the speed of sound at temp of 83F and 135F?
asked by tiffany 
Grammar
The subject of the sentence is sometimes a prepositional phrase. True or False I say true as my answer
asked by Marie 
math
jill bought 32 orange and apple slices. There were three times as many orange slices as there were apple slices. how many of each did she have
asked by lisa 
Science
If Sam weigs 114kg on earth what is his mass on the moon
asked by Saskia 
Environmental Studies
Buell (2004: 110) suggests that "people have entered a world in which the robust exercise of their power to modify nature has made their past actions increasingly into their present fateor, better, not just their present fate, but the fate of all life
asked by Kjd 
Calculus
Let h(x) be a function which satisfies h'(4) = 3. If k(x) = h(x2), compute k'(2).
asked by Anonymous 
Calculus
What is the derivative of R(x)=(√7)/(xˆ10)
asked by Chelle 
NATH
WHAT FOUR LETTER BELONG IN ABCELK
asked by MICHAEL 
Calc
deriv. h(t)=(tˆ41)ˆ3(tˆ3+1)ˆ4
asked by C.S. 
Calculus 1
differentiate f(x)=(sinˆ2x)/(cosx)
asked by Adam 
Calculus
Let Q(x)= f(f(x)−g(x)). Find Q'(x).
asked by Anonymous 
calculus
suppose f(x) is a function such that f(3)=5, f'(3)=0, and f''(3)=3. Is the point (3, 5) a relative maximum, minimum or inflection point?
asked by Elizabeth 
Biology
Describe the process of gastrulation in the sea urchin – what molecular and cellular changes are needed to drive the movements that one observes?
asked by melody 
Calculus
What is the derivative of sin(3x+1)^4?
asked by Bill 
English
Change the verb into the tense indicated. I am here. (past perfect)
asked by Emma 
Algebra  Math
How do you solve 5y+4=5(y+3)11 ? when i did it out i got 0y = 22 so no solution but i don't think it's right ?
asked by Mimi tran 
Math
if ben ate 4 of 6 candies in a bag and phil ate 5 of 6 candies in his bag, how much did they eat altogether?
asked by Anonymous 
Grammar
The ________ is what the sentence is about. A) predicate B) subject C) sentence D) subject I answered Subject
asked by Marie 
marketing
explain how the ebusiness's online service fits within the emarketing mix
asked by David 
math
506 divided by 23
asked by cupcake 
Social Studies 9
i did my chart and i have filled almost everything but 3 questions. Please help me on these 3 questions. 1. What is the role of law for a republic? 2. What is the role of law for an absolute monarchy? 3. What is the role of law for constititional monarchy?
asked by Sarahh 
accounting
in order for companies to prepare and issue financial staements, their accounting equations (debit and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement.
asked by mya 
business
how long would it take to pay off 105,000.00 at 200.00
asked by Anonymous 
Math
Each equal side of an isosceles triangle is 3 1/2 inches longer than the base. The perimeter of the triangle is 2 feet. Find the length of its base.
asked by Ray 
chemistry ............chemistry
if you had to design a firework show for a Christmas celebration , what elements would you include in the fireworks ? why ? I knew u post answer for me , but i can't find it . May you answer for me? Thank you so much !!
asked by Maria 
Algebra
I'm not sure how to format this You are putting fence around a rectangular garden whose length is twice its width. What are the dimensions of the garden?
asked by Simone 
s.s.
explian the process of slavery abolition in france.
asked by dev 
English3
That you over slept is a serious matter
asked by Deondrea 
semicolons
Mary Vaux Walcott is known as "the Audubon of North American wildflowers," for she painted more than seven hundred species.
asked by Anonymous 
math
Ray Sugar's account Principal: $1,700 Rate: 9.5% compound Length of period: quarter Third quarter's interest: _________
asked by terry pierce 
math
Find the following landmarks for 12,16,23,15,16,19,18
asked by joey 
dounoon
(1) A sample of gas has a volume of 0.5 meter at 27 0degree and 1.5x10 Pa. What volume will this gas occupy if the temperature is raised to 117 0degree and the pressure lowered to 0.5x10 Pa.
asked by casieve 
math
y=(w5)270 for w
asked by matt 
Calc
deriv. y=x(sinx)(cosx)
asked by C.S. 
science
changing the mass or volume of an object changes its density and ?
asked by shon 
math
Someone said when you put together any groups, you can multiply. Explain why that is not correct.
asked by Trishona 
US History
How would the French and Indian War first unite the colonists and then lead them to resent the British?
asked by Darcy 
social studies
Are all aztecs able to wear feather headdress or just royalty and rich people?
asked by Slippy 
English
What is can find in the following sentence: You can find properties of science in a basic clock. A. Main verb B. Helping verb C. Both D. Neither I say it is C Both, is this right?
asked by B 
Math
Change 300 mm3(cubed) to cm3(cubed). I have no idea how to work this out. Any help you can give me would be greatly appreciated!! Thanks
asked by Hannah 
MATH
WALTER HAS A CAR PAYMENT OF 417.HOW MUCH WILL HIS CAR PAYMENTS TOTAL IN ONE YEAR?
asked by ARIANNA 
Math
if the interest rate on a home mortgage is 9%, then each month you pay 0.75% of the unpaid balance in interest. if the unpaid balance on one such loan is $60,000 at the beginning of a month, how much interest must be paid that month?
asked by Rodney 
ENH275
How does a story employ verisimilitude?
asked by Jazmyne 
s.s.
who is pinochet
asked by dev 
s.s.
state the three demands of lenin's april theses?
asked by dev 
Science
If Sam weights 114kg on earth what is his mass on the moon
asked by Anonymous 
calculus
differentiate: g(t)=tˆ3cos(t)
asked by Chelle 
College Algebra
A piling supporting a bridge sits so that 1/4 of the piling is in the sand, 150 feet is in the water, and 3/5 of the piling is in the air. What is the total height of the piling?
asked by Rachel 
Math
1/2 of class takes Spanish and 1/4 takes Chinese. 1/3 as many take French as Spanish. 8 takes French. No students takes more than one Language. How many takes Spanish? How many students take Chinese and how many students are in the class? Is this correct?
asked by Patch 
Calculus 1
differentiate f(x)=(1+sinˆ2x)ˆ6
asked by Adam 
Calculus
Find an equation of the tangent line to the curve of f (x) = x^3 − 8, at the point where the curve crosses the xaxis.
asked by Anonymous 
Grammar
A/an ________ and a connector is the same thing. A) conjunction B) preposition I answere B
asked by Marie 
aed 204
sexual harassment among students
asked by Anonymous 
Evolutionary Bio
Is Amborella considered a magnoliid, monocot, or eudicot and why?
asked by M 
grammar
Cowardice die many times before their death but brave once
asked by Anonymous 
Grammar
A relative pronoun is a connector, and the most commonly used relative pronouns are “that,” “which,” “who,” “whom,” “whose,” “whoever,” and “whomever.” True or False I answerd True
asked by Marie 
Math Rational Functions
What is the domain and range of 2x^218/x^2+3x10
asked by Enlia 
AP Calculus
if i define the function f(x)= x^3x^23x1 and h(x) = f(x)/g(x), then evaluate the limit (3h(x)+f(x)2g(x), assuming you know the following things about h(x): h is continuous everywhere except when x = 1 lim as x approaches infinity of h(x) = infinity
asked by Anonymous 
math
when enlargeing sn object, why does the area increase diffrently than the preminter?
asked by anna 
Math
What is the cube root of 192x to the 7th power?
asked by Shaff 
social studies
what will obama do for for jobs, education and gun control? i am writing an persuasave essay in 6th grade and i need a fact about what obama will do for jobs education and gun control please make sure the facts are correct and NOT made up!
asked by rjr 
math
5/6 of 3 find the product
asked by Anonymous 
maths
what is prime triplet?
asked by chitla 
maths
x3+6x2+18x+13=0
asked by jenny 
geometry
solve for x if angle 1 and angle 2 are supplementary: angle 1= 5x+6 angle 2= 3x
asked by gman23 
math
write 8,042,176 in words
asked by Anonymous 
Math
How many 2/3 are in 3/4?
asked by Tyler 
Religion
I need help interpreting this question, In Isaiah 38 how did Hezekiah feel when he found out he was going to die, some typical or expected things? thanks
asked by Elisabeth 
algebra2
s2/2s1/5=1/4
asked by Anonymous 
biology, test tom!
how is plants doing sesxual and asexual an adaptation?
asked by rebekah