Questions Asked on
March 29, 2015

Math
Fifteen smart cars were randomly selected and the highway mileage of each was noted. The analysis yielded a mean of 47 miles per gallon and a standard deviation of 5 miles per galon. Which of the following would represent a 90% confidence interval for the
asked by Arturo 
Civics
2. One main difference between the United States Constitution and state constitutions is that state constitutions A. are much longer. B. don't provide for a legislature. C. can't be amended. D. don't have bills of rights. So your saying it's D? (Reed)
asked by Sarah 
Calculus 1
If two resistors with resistances R1 and R2 are connected in parallel, as in the figure below, then the total resistance R, measured in ohms (Ω), is given by 1/R= 1/R1+ 1/R2. If R1 and R2 are increasing at rates of 0.3 Ω/s and 0.2 Ω/s, respectively, how
asked by TayB 
math
last week at a festival, a man sold 3 times as many tiedyed shirts as silkscreened shirts. He sold 148 shirts altoether. How many tiedyed shirts did he sell?
asked by shari 
Civics
1. Suppose Bill HR612 is currently in Congress. One thing you know about this bill is that it A. originated in the House of Representatives. B. has been vetoed by the president. C. has no riders attached. D. is currently in committee. A?
asked by Sarah 
English
Read the following line from Act IV, Scene 5 of Romeo and Juliet, when Capulet speaks of his daughters apparent death: Death lies on her like an untimely frost Upon the sweetest flower of all the field. How does Shakespeare use a simile to emphasize the
asked by Steve 
Calculus 2  Series
I am so confused on how to do series problems...especially these. How can you tell the pattern and determining the formula for them? Can someone please help? 26) Write the first five terms of the sequence {an} whose nth term is given. an = (n + 3)/(2n −
asked by Helen 
Math
The rainbow bridge of Utah is a natural arch that is approximately parabolic in shape. The arch is about 88m high. It is 84m across the base. Determine a quadratic relation, in standard form, that models the shape of the arch My answer was y=22/441x^2+88
asked by Anonymous 
Geometry
In the triangle, angles ABC and ADE are right angles. If AC = 35, AE = 11, and BE = 10, then what is AD?
asked by Mona 
Calculus 2 (Differentiate & Decay Problem)
I have two problems I need help on, can someone show and explain step by step how to do the problems? For #1, how would you differentiate and solve the initalvalue problem? For #2, I don't understand what I am doing wrong with the problem..I am sure it is
asked by Misa 
physics
(a) A charged particle accelerates as it moves from location A to location B. If V A = 170 V and V B = 210 V, what is the sign of the charged particle? positive negative (b) A proton gains electric potential energy as it moves from point 1 to point 2.
asked by mathew 
Physics
a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 212 m. If the red car has a constant velocity of 23.0 km/h, the cars pass each other at x =
asked by Mike 
Math
A new fence is constructed on three sides of a housing block with area 240 m2. The fourth side facing the road is left open. If 52 m of fencing is used, what are the dimensions of the block?
asked by Aria 
Shegal
Three identical metal spheres are hung from a ceiling on rigid nonconducting rods. Sphere 1, sphere 2, and sphere 3 have charges 75 µC, −44 µC, and 50 µC, respectively. Each sphere is separated by 0.15 m. What is the net electric force on the middle
asked by priya 
chemistry
What is the total change in entropy when 10.0 g of ice melts at 25.0°C? DHfus = 6.01 kJ/mol The answer is 1.03 J/K but idk how to find it.
asked by paula 
math
1. Shawn Fitzgerald finds a suitable property and agrees upon a selling price of $137,900. The mortgage company requires a 20% down payment and Shawn chooses to finance the property for 30 years at 8%. What is the total amount of interest charged, rounded
asked by Nadia 
COMMON CORE MATH
What does method mean in math?
asked by DJ Jazzy 
Geometry
In a triangle, we have line QR parallel to line ST, PQ = 8, QS = 6, and PT = 12. Find PR.
asked by Harry 
math
If Will gives Molly $9, he will have the same amount of money as her. If Molly gives Will $9, the ratio of the money she has to the money Will has will be 1 : 2. How much money does Will have in the beginning?
asked by Sally 
Chemistry
Hi, can you help me with this question: "you have 25.00 mL of a 0.1000 M sugar solution. How much water must be added to make a 0.025 M solution? Thank you.
asked by Cassandra 
Calculus
The area of a circular oil slick is increasing at a constant rate of 2 square miles per day. How fast is the radius increasing when the area is 4(pi) square miles (approximately 12.57 square miles)? So far I have that the area increases at the rate of
asked by Emily 
chemistry
Hydroxyapatite is the main mineral component of bone. How many grams of hydroxyapatite will dissolve in 1.00 L of H2O? Ksp = 2.34 × 10–59; Molar mass = 502.3 g/mol? I keep getting 5.83x10^18 g but the answer is supposed to be 4.35x10^5 g. I don't
asked by paula 
maths
i have to design a wine glass using quadratic and linear and i don't know what to do!!!!!
asked by jem 
factor
how to factor the quadratic: 63x^210x25
asked by ho 
Chem
Calibration of a glass electrode gave a reading of 139.3 mV with 0.05 m potassium dihydrogen citrate buffer standard (pH = 3.766) and a reading of 79.0 mV with 0.08 m HEPES, 0.08 m NaHEPES, 0.08 m NaCl buffer standard (pH = 7.454), both measured at 30°C.
asked by Cassie 
Computer science C++
A problem in timber management is to determine how much of an area to leave uncut so that the harvested area is reforested in a certain period. It is assumed the reforestation takes place at a known rate per year, depending on climate and soil conditions.
asked by Computer Science 
Chemistry
Sulfuric acid dissolves aluminum metal according to the following reaction: 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 14.5g . 1.) What minimum mass of H2SO4 would you need? 2.)What mass of H2
asked by Katie 
Ethics in Technology
Which of these statements about the National Crime Information Center (NCIC) is true? A. The NCIC databases contain about 40 million records. B. Improper use of the NCIC has led to about 1 million false arrests. C. Local law enforcement agencies enter most
asked by Pat 
physics
A proton is acted on by an uniform electric field of magnitude 233 N/C pointing in the positive x direction. The particle is initially at rest. (a) In what direction will the charge move? (b) Determine the work done by the electric field when the particle
asked by mathew 
Ethics in Technology
Which of the following is NOT a reason to use a computer simulation? A. To model past events B. To produce a detailed financial model C. To reduce costs D. To save time I think it's D, but not sure.
asked by Pat 
Calculus
Solve without a calculator. cos(arcsin (3x/2)) I made a triangle but im stuck after that..
asked by Anonymous 
pharmacy calculations
If a patient is on a morphine drip in the hospital from Friday morning, until Monday morning, (3 days) how many minutes has the patient been receiving this morphine regiment?
asked by brown 
Civics
12. In 1900, how were members of the United States Senate chosen? A. They were elected by the people. B. They were appointed by their state legislatures. C. They were appointed by the governor of their state. D. They were elected by the House of
asked by Sarah 
chemistry
Determine the limiting reactant for this reaction if 3.027 grams of Aluminum are reacted with 60.00 mL of a solution that is 6 M KOH. Determine the amount of KAl(SO4)2•12 H2O that can be produced from this reaction. Molar mass Alum = 474 g/mol 2 Al (s) +
asked by Jonathan 
Stats
In a study of children with a particular disorder, parents were asked to rate their child on a variety of items related to how well their child performs different tasks. One item was "Has difficulty organizing work," rated on a fivepoint scale of 0 to 4
asked by Hunter 
social studies
1.What role did Marco Polo play in the age of exploration? a)He found the first sea route to Asia. b)He conquered native peoples in the Americas. c)He invented new tools and methods of navigation. d)He increased European interest in foreign lands idk i
asked by #HOMEWORK 
Civics
20. The governmental body responsible for interpreting the Constitution is the A. Supreme Court. B. president. C. House of Representatives. D. Senate. A?
asked by Sarah 
statistics
A simple random sample of a size n is drawn from a population that is normally distributed. The sample mean, x is found to be 110, and the sample standard deviation, s, is found to be 10. A Construct a 95% confidence interval about u if the sample size,
asked by Anonymous 
Calculus
Th integral of tan(3x)dx
asked by Anonymous 
Radiometric (Radioactive) Dating
How old is a sample that contains 125 atoms of U235 and 375 atoms of Pb207? ...Given that the half life values on my handout are 713 million years. *I do not even know where to start so could you please explain in steps too? Thanks.
asked by J 
English
What quote from Romeo and Juliet Act 3, Scene 5 illustrates Shakespeare's use of comic relief?
asked by Steve 
Project management
Build a PowerPoint® presentation that will address each of the Project Management Areas of Knowledge, the process groups that use these areas of knowledge, and how the process groups interact with the knowledge area processes. Use table 31, Project
asked by Anonymous 
physics
a body projected with velocity 30m/s an angle 30¡ã with horizontal maximum height attained by he object is.........?
asked by yogesh 
math
Ruth's brother just went away to college this fall and had to buy his own laundry soap and fabric softener.The laundry soap was twice the cost of the fabric softener. the total of the two items was $7.47. how much did the laundry soap and the fabric
asked by nicole 
statistics
A recent survey showed that among 675 randomly selected subjects who completed 4 years of college, 138 smoke and 537 do not smoke. Determine a 95% confidence interval for the true proportion of the given population that smokes.
asked by Richelle 
English
Death lies on her like an untimely frost Upon the sweetest flower of all the field. (Act 4, Scene 5) ow Does this example of dramatic irony create tension? My answer is because the reader know that Juliet is actually sleeping
asked by Steve 
math
Carlos has 7 1/2 acres of farmland. He uses 1/3 of the acres to graze animals and 1/5 of the acres to grow vegetables. How many acres does Carlos use for grazing animals of for growing vegetables?
asked by Hector 
math
Problem: A riding stable manager is planning a nutritional diet for 9 horses. The manager finds the table below in a guide about horse health. The cost of 1000 Calories of horse feed is $0.25. What is the cost per day to feed 9 horses? (Hint: First, try
asked by Anonymous 
Algebra
How much metal is need to build a trough 6 ft long and 2 feet wide?
asked by Ben 
Math
If the flight of a rocket can be modelled by the function h=4.9t^2+49t+2.5. Where h is height in meters and t is time in seconds. How long was the rocket above 100m? I know that you have to find the two times when the rocket hits 100m. And then subtract
asked by Anonymous 
basic math
I have 14 minutes left to complete this test. use the net decima equivilant to find thr net price. List price is $700 and the trade discount rate ie 10/8/6
asked by shari 
chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm
asked by kim 
chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm?
asked by Anonymous 
exponential equations
The City of South Bay has a current population of 85 000. If the city is increasing at a rate of 7.25% per year, calculate the future population in 8 years time. Round to the nearest person.
asked by Anonymous 
chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm?
asked by Anonymous 
exponential equations
Jen made an initial investment of $1000 into a TBill account. After 2 years, her investment totaled $1 175. Calculate the rate of appreciation, r, of the investment. Give answer to 2 decimal places.
asked by Anonymous 
exponential equations
The Sign Guys purchased a new hoist for $1' 500. If this particular hoist has an annual depreciation rate, r, of 15% calculate the value of the machine in 3 years time. Give answer to 2 decimal places.
asked by Anonymous 
Chemistry
What intermolecular forces are responsible for neoprene's stretchiness?
asked by Cortney 
exponential equations
If a brand new Nissan Frontier pickup truck has a current value of $22 500 off the lot, calculate how long, t, it will take to depreciate to half of it’s current value. This particular model has a depreciation rate of 23%. Give answer to 2 decimal
asked by Anonymous 
math
Lexie divided these hexagons into 2 parts and shaded one part. Which shaded parts cover half the hexagon? A.only the shaded trapezoid B.both the shaded triangle and the shaded Pentagon C.only the shaded Pentagon D.both the shaded trapezoid and the shaded
asked by Anonymous 
exponential equations
6. Staphylococcus bacteria has a doubling time, d ,of 18 minutes. Calculate how long, t, it will take for the population to increase, from an initial population of 400 organisms, to 6400 organisms.
asked by Anonymous 
Biomechanics
Shoulder abduction = 15¡ã Abduction acceleration = 50/rad/s/s Abduction velocity = 20 rad/s Radius of gyration and COM location from joint = 25cm Mass of hand + Arm = 8 kg Force of middle deltoid =400N Middle deltoid only active muscle Force of theraband
asked by Ming 
Precalculus
Find and equation of the circle with center at (0,0) that passes through the poijt (5,2)
asked by Anonymous 
math
Stacy and Steve each have brownies of equal size,as shown. Stacy cuts her brownie into halves.Steve cuts his brownie into eighths. Which statement is true? A.Stacy has more pieces than Steve. B.Stacy has 4 pieces. C.Steve has smaller pieces than Stacy.
asked by Anonymous 
Chemistry
What pressure is required to reduce 34 mL of a gas at standard conditions to 16 mL at a temperature of 20◦C
asked by Emily 
Davis
Calculate the mass of water produced when 4.36g of butane reacts with excess oxygen.
asked by Aimee 
English
What does this mean "beyond hope of help from any source" when describing the Ewells in To Kill A Mockingbird? It's not a quote from the book.
asked by Jasmine 
Math
the perimeter if a rectangle is 42 centimeters. the lenght of a rectangle can be represented by (x+4), and its width acn be represented by (2x7). what are the dimensions of this rectangle in centimeters?
asked by Mariah 
Precalculus
Find an equation of the circular orbit of a satellite 500 miles above the surface of earth. Place the origin of the rectangular coordinate system at the center of Earth and assume that the radius of Eatch is 4000 miles.
asked by Anonymous 
Math
Jenna will use 1/3 of a piece of wood to make 4 shelves of equal size.
asked by Anonymous 
Pre Ap Chemistry
A sample of carbon dioxide gas occupies 566 mL at 0.825 atm and 15 ◦C. What will the pressure be at a volume of 834 mL and a temperature of 20◦C
asked by Analyse 
Chemistry
You have 100 mL of a 0.450 M sulfuric acid solution, but you now need to add NaOH to make the solution basic. How much NaOH ( in grams) will you need to add to make the solution have a pH of 13.0? The units are grams of NaOH.
asked by Tessa Lehan 
math
1. Macon Steinberg purchased a motor scooter with an installment loan that has an APR of 16 percent. The scooter sells for $1,687.00 The store financing required a 20 percent down payment and 30 monthly payments. What was the finance charge? Answer: $69.19
asked by Katherina 
Chem
When an ionselective electrode for sulfate was immersed in 0.0300 M sodium sulfate, the measured potential was 0.0460 V. What is the concentration of sulfate when the potential is 0.0610 V? Assume that the electrode follows the Nernst equation, the
asked by Cassie 
English
Are these sentences compound, complex, or compound complex? Volunteer helped clear roads so that supplies could get to villages that needed them. Complex..
asked by Kelley 
Life orentation
Differences between nsfas and other student loans
asked by Lelo 
chemistry
what would be the final concentration if you incorporate 11m: of 29'' concentration of HF to 800mL of water?
asked by camille 
Physics
A motorist is trying to loosen a stubborn lugnut by standing on the end of a wrench. The wrench is inclined 33.8 degrees above the horizontal and the distance from the center of the nut to the end of the wrench is 0.60 m. Assuming the motorist does not
asked by Michelle 
AP Chemistry
A 5.0 M solution of HNO3 is titrated with 0.3 M NaOH. Identify the species that have the highest concenttrations in the solution being titrated halfway to the equivalence point. A 25.15 ml of 0.35 m HNO3 was titrated with an unknown concentration of NaOH.
asked by Sara 
Physics
A uniform disk of radius 0.5 m and mass 3.9 kg is rotating about its center of mass. Its moment of inertia about its center of mass is I=(1/2)mR^2. Its angular velocity as a function of time is given by (t)=7kt^6/t1^7 where k = 3.8 rad and t1= 5 s. Find
asked by Esha 
Chemistry
A 1.0g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2? I know that the formula needed is
asked by MB 
Chemistry
For the substance SO2F2(g), ΔHºf = 858 kJ mol1 and the SF bond, 308.0 kJ mol1 Determine the average S=O bond energy in SO2F2 in units of kJ. Is my answer right, if so how do I convert this to kJ? x= S=O bond 858= 2(308) + 2(x) 737kJ/mol
asked by Nicky 
math
The area of a triangle is 135 square inches. If the height is 15 inches, what is the length of the base?
asked by Anonymous 
INCIDENT COMMAND SYSTEMS
During past hurricanes, medical rescue teams took instructions from any number of sources, resulting in confusion and poor coordination of efforts. During Hurricane Andrew, the MetroDade Fire Rescue team changed its protocol. How? A. Managers adjusted
asked by INCIDENT COMMAND SYSTEMS 
math
An Artisan has 63 kg of metal of density 7,000kg/m3. He intends to use make a rectangular pipe with external dimensions 12 cm by 15 cm and internal dimensions 10 cm by 12 cm. Calculate the length of the pipe in meters.
asked by kudu 
Geometry
Points F, E, and D are on the sides line AB, line AC, and line BC, respectively, of right triangle ABC such that AFDE is a square. If AB = 12 and AC = 8, then what is AF?
asked by Mona 
Calculus 2
I need help in solving an initialvalue problem and a few series problems (Especially on #45 & #46). I don't really understand how to do the series problems...majority of the time. An explanation would be great as well. Thank you for your time. #20) Solve
asked by Erin 
Geometry
In triangle ABC, points X and Z are on line AB and Y is on line AC such that line XY is parallel to line BC and line ZY is parallel to line XC. If AZ = 8 and ZX = 4, then what is XB?
asked by Jake 
math
In quadrilateral QRTS, we have QR = 11, QS = 9, and ST=2. Sides line RQ and line ST are extended past Q and S, respectively, to meet at point P. If PS = 8 and PQ = 5, then what is RT?
asked by lily 
chemistry
PH of gatorade and body sweat
asked by jk 
math
In the triangles, we have XY = 2AX = 2YB and AZ/ZC = 2/3. Find the ratio of the area of triangle YBC to the area of triangle ZYC.
asked by will 
social studies
1.which of the following improved during the industrial revolution? a)treatment of disease*** b)pollution in cities c)child labor conditions d)housing for the poor 2.in what industry did the industrial revolution begin? a)coal mining b)electrical
asked by #ASAP 
statistics
a repair shop believes that people travel more than 3500 miles between oil changes a random sample of 8 cars getting an oil change has average distance of 3375 standard deviation of 225 miles with alpha 0.05 is there enough evidence to support the shops
asked by Anonymous 
math
simplify (9m^2)7m^3 / (3m)14m please help i am stuck
asked by dev 
maths
three resistors are connected the resistances are R2 = 2 R3= 3 R1=r r is not specified Question: Derive the total resistance of the system as an expression containing r
asked by dev 
Calculus 2 (Series  Convergent or Divergent?)
Can someone show me a step by step process and explanation how to solve this problem? 1) Consider the following series. (∞ on top of summation symbol) (k = 1 under the summation symbol) ∑ k(k+15)/(k+13)^2 Determine whether the series is convergent or
asked by Erin 
Chemistry help
A gas occupying 29 mL at standard conditions is heated to 14◦C while the pressure is reduced to 0.98682 atm. What is the new volume occupied by the gas?
asked by Quintin 
social studies
2.in what industry did the industrial revolution begin? a)coal mining b)electrical production** c)steel manufacturing d)textile manufacturing 3.Which renaissance scientist first proposed the heliocentric theory? a)Francis Bacon b)Nicolaus Copernicus
asked by #ASAP 
chemistry
what is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm
asked by kim 
Algebra
Describe how you know if an inequality is an “and” or an “or” problem. (use 3 < x+5 < 8). Also, how do you know if an absolute value question is an “and” or an “or” problem? Lastly, will you always have two solutions to an absolute value
asked by Danise 
physics
A 8.0 kg shell leaves a 2.0 x 103 kg cannon, at a speed of 4.0 x 102 m/s. What is the recoil speed of the cannon?
asked by Abby 
ALGEBRA
Describe how you know if an inequality is an “and” or an “or” problem. (use 3 < x+5 < 8). Also, how do you know if an absolute value question is an “and” or an “or” problem? Lastly, will you always have two solutions to an absolute value
asked by Anonymous 
physics
Part 2: Complete the following math problems by using the Law of Momentum Conservation. Formulas: i. Momentum = (mass) * (velocity) ii. Impulse = (Applied force) * (time) and Impulse = Change in Momentum iii. Applied Force = (Change in Momentum) / (time)
asked by Sarah 
math
Find the lateral of the square pyramid if its height is 8m its slant is 22m and its length is 8m.
asked by U.D. 
Calculus
Find the equation of the tangent line when x=2 for the functin f(x)=5^(x/2)
asked by Anonymous 
physics
A simple harmonic oscillator executes motion whose amplitude is 0.20 m and it completes 60 oscillations in 2 minutes. i) Calculate its time period and angular frequency. ii) If the initial phase is 45°, write expressions for instantaneous displacement,
asked by meenu 
integral Calculus
ʃ (x4 + 6x3 – x2 + 2)dx I really need it for practicing this subject...please please help
asked by Olya 
Pschology 202
A person's social status or choice of peers during childhood can predict a number of behaviors in adulthood.
asked by Chanelle 
Pschology 202
After school, Raven enjoys going to the park to hang out with her friends and watch them do tricks on their skateboards. Every day, her friends encourage her to get a skateboard so that she can learn how to skate and do what they do. Eventually, Raven
asked by Anonymous 
integral calculus
(x^4+6x^3x^2+2)dx need help
asked by Olya 
spanish
In the sentence:"Hay muchas historias sobre dónde y cuándo Piña coladas fueron encontrar," is fueron correct? or do I use eran instead?
asked by ally 
Calculus
Simplify using basic simplification. f(x)=ln[(sqrt(x^2+1))/(x(2x^31)^2)]
asked by Anonymous 
physics
1) What average power is required for a runner with a mass of 85 kg to reach a speed of 8 m/s from a stationary start during a time of 2 s? 2) A 1000 kg car travels east at 30 m/s and collides with a 3400 kg truck travelling south at 20 m/s. After the
asked by k 
physics
A spherical buoy of radius 25 cm and mass 8 kg sits in sea water of density 1025 kg/m3 . At low tide its anchoring chains have got tangled. What is the maximum tension force this chain may have to withstand at high tide? Assume calm conditions.
asked by bri 
physics
If 50 g of ice at −5 ◦C is mixed into 300 g of water at 60◦C in a completely insulated container, what is the final equilibrium temperature of the water? Why did we insist on the container being completely insulated?
asked by bri 
physics
An ideal gas has an initial volume of 500 cm3 , an initial temperature of 20◦C, and an initial pressure of 2 atm. What is its final pressure if the volume is allowed to expand to 1000 cm3 while the temperature increases to 60◦C?
asked by khalifah 
Civics correction
3.Which one of the following statements is accurate for the Articles of Confederation. A. There was only one central court. B. Each state could veto a presidential decision. C. There was no president. D. Interstate commerce could be regulated. I got this
asked by Sarah 
Pschology 202
1. David is somewhat afraid of flying. When he is required to travel on business, he prefers to take a train or drive if the distance is short enough that he can arrive on schedule. However, if the distance is long and driving does not make sense, he will
asked by Sharnii23 
Chemistry
Molality of aqueous solution of urea is 4.What will be the mole fraction ofH2O?
asked by Dipika Dang 
Calculus
Simplify using basic simplification. y=x^(1x)
asked by Anonymous 
Chemistry
Weight of solution is 1026gm in aqueous solution.what will be the weight of per kg H2O?
asked by Dipika Dang 
Pschology 202
1. The three broad categories, also called domains, of adult development are: physical, cognitive, and sexual. (Points : 1) True False Question 2.2. Temperament is a term that relates to personality and emotional development. (Points : 1) True False
asked by Sharnii23 
English
1. Did you lock the keys in the car? 2. Did you lock the doors in the car?  Are they grammatical?
asked by rfvv 
Geometry
an architect designs a rectangular window such that the width of the window is 40 com less than the height. If the perimeter of the window is 500 cm, what are the widths and heights?
asked by CJ 
Differential Calculus
Hi pls help me i dunno what to do show me complete solution please please Thank you. a piece of wire 10ft. long is cut into two pieces , one piece is bent into the shape of a circle and the other into the shape of a square. How should the wire be cut so
asked by Ella 
Geometry help
Find the perimeter, apothem, and area of a regular triangle with a radius of 6sqrt3. How do I do this?
asked by Anonymous 
math
The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 32 beads, 57of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s
asked by Sam 
Chemistry
What volume of carbon tetrachloride (density = 2.71 g/mL) contains 2.46x10^25 chlorine atoms?
asked by Charles 
Chemistry
A heliumfilled balloon has a volume of 2.68 L at 15◦C. The volume of the balloon decreases to 2.33 L after it is placed outside on a cold day. What is the outside temperature in K? Answer in units of K.
asked by Maggie 
Geometry check
Find the perimeter and are of a regular truangle with an apothem of 9 ft. Is the perimeter 54 ft & the area 243 ft?
asked by Anonymous 
basic math
find the net price of a computer that lists for$220 if a discount rate of 10% is offered
asked by shari 
Physical science
I Don't UnderThis . It Says V=55mph D=68mi T=?
asked by Jakeandria 
Chem
SO2F2(g) has a ΔHºf = 858 kJ mol1 and the SF bond is 308.0 kJ mol1 Determine the average S=O bond energy in SO2F2 in units of kJ.
asked by Anonymous 
Math
does the series (1(2/k))^k from k=1 to infinity converge?
asked by Issa 
READING
IN UR OWN WORDS WRITE no man can be the best at everything he tries,but he can try his hardest at everything
asked by VANESSA 
Calculus
Does the series (cos(k/3))^2/2^(k/3)+1 from k=1 to infinity converge?
asked by Jenn 
physics
Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts. (a) What is the electric field strength between them, if the potential 8.50 cm from the zero volt plate (and 1.50 cm from the other) is 450 V? kV/m (b)
asked by mathew 
Chemistry
What volume of carbon tetrachloride (density = 2.71 g/mL) contains 2.46x10^25 chlorine atoms? I did: 2.46x10^25 Cl atoms x 1 atom/4 atoms x 1 mol/6.02x10^23 x 154 g/1 mol x 1 mL/2.71 g And the correct answer is apparently 572 mL when I got 581 mL.
asked by Charles 
Calculus
Integral of [1/(sqrt(8+2xx^2))] dx
asked by Anonymous 
chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C
asked by kim 
chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm
asked by kim 
Math
Tiffany is using wooden cubes to make rectangular prisms. if she has exactly 8 wooden cubes, make a model to find the length, width, and height of the two possible rectangular prisms. i don't quite understand the question so can u help me comprehend what
asked by Angelina 
math
a large piece of cadboard, 5cm by 8cm to be made by cutting out sqaures in each corner. find dimensions that will maximize the volume? vol= (82w)(52w) (w) answer= 1cm and 10/3 cm is this correct?
asked by Andy 
Chemistry
Calculate the percentage yield if, on heating 50g of limestone(CaCO3), 21 g of lime(CaO) were obtained.
asked by Armaghan 
Physics
An eagle is flying horizontally at 5.8 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed doubles? (b) How much additional time would be required for the speed to double again?
asked by KS 
English
Is this sentence compound, complex, or compound complex? Charity groups distributed food and safe drinking water, and they handed out sleeping bags and mosquito nets, which were needed in the tropical climate. Is this compound complex?
asked by Kelley 
Algebra 1
In a right triangle the height = 54 (ba) The hypotenuse is 90 (ac) and the base ism 72 (bc). What is the value of cosC? a.5 b .6 c .8 d .9 My answer is .8 72/90
asked by Steve 
Chemistry
calculate the molarity of cl ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride
asked by Amy 
math
solve for the unknown equation. 7A=14
asked by shari 
Algebra 1
A right triangles hypotenuse is 20 cm long. What is themlength of the side opposite a 60 degree angle? a 40 b 18.5 c 20 d 17.3 My answer is 17.3
asked by Steve 
math
I need help with two questions,. they both have attachments. is there another program where someone can come on and help me
asked by math 
Ethics in Technology
hich of the following is NOT an issue with DRE voting machines used in Brazil and India? A. Lack of a paper audit trail B. Vulnerability to tampering C. Voter identity may be revealed D. Source code is a trade secret I am stuck between C & D.
asked by Pat 
Algebra 1
Solve for x sq root 2x+3= sq root 6x1 a1 b2 c3 dsq root 6 My answer is a = 1
asked by Steve 
math
the fany budget is: food $450, housing $300, insurance $122, personal $80, misc. $80, clothing $160, savings $150, transportation $178. what percent of take home pay is spent for education if education, savings, and misc. funds are used for education?
asked by shari 
programming
Peter decided to save money to buy a house. Enter this amount as well as the amount he will be able to save each month. He earns 0.8% interest per month while the amount is less than R70,000 and 0,7% interest per month if the amount is equal to or more
asked by joyce 
Pschology 202
The psychological term for mental activities in which we think, solve problems, and use language is called?
asked by Anonymous 
Algebra 1
In a right triangle c=90 degrees a=52 degrees b = 38 degrees the base length =11 What is the hypotenuse length? a6.8 b8.7 c14.0 d17.9 my answer is 17.9 d
asked by Steve 
Physics
The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force that the sun exerts on the moon is perpendicular to the force that the earth exerts on the moon. The masses are: mass of sun=1.99 × 1030 kg, mass of
asked by Kristyn 
Chem
1. What is the molarity of a copper(II) dihydroxide [Cu(OH)2] solution if 25.25 mL of the solution is titrated to the equivalence point with 36.18 mL of 0.549 M prussic acid [H(CN)]? 2. What volume of a 0.138 M dihydroxyl base solution is needed to
asked by TK 
Writing
My name is Devon and I am about to tell you about a time I went fishing. I went one day last summer, it was lot of fun. Original Sentence: My name is Devon and I’m going to tell you about a time I went fishing. I went fishing one day last summer. It’s
asked by YOLO 
Math
How do you know if a word problem question is asking for simple interest or compound interest? P.s. I already know the formula and what both of them mean
asked by Katy 
Chemistry
a gas is placed in a 3.56L flask at 1.00 atm pressure. If the volume of the flask is reduced by half, what is the new pressure? V3.56 P1.00 I don't know what formula to use and how to apply it.
asked by Ann 
math
a number increased from 460 to 621. find the percent of increase
asked by shari 
English
And if we meet we shall not ’scape a brawl, For now, these hot days, is the mad blood stirring. the fight in which Mercutio and Tybalt are killed or the duel in which Romeo is killed my answer is the 1st one because it was a fight
asked by Steve 
exponential equations
The Bruce’s purchased $2500 worth of GIC’s. How long, t, will it take for the investment to increase to $3500, if the interest rate is 2.75%.
asked by Anonymous 
Algebra 1
Find the measure of the smallest angle of the right triangle. c= 90degree a= height ac= 7 and cb = 11 a32.5 degree b57.5 degree c13.0 degree d50.5 degree my answer is a 32.5 degrees
asked by Steve 
History
Even though I asked this before, can you please help me with this and yes it's a crossword puzzle. My teacher gave us clues that don't really help at all and I've looked back in my textbook but I can't find the words for each clue. 1.Equality of Sexes 7
asked by Jamie 
Math
Determine how many triangles can be drawn. Calculate, then label, all side lengths to the nearest tenth and all interior angles to the nearest degree. a= 2.1 cm, c= 6.1 cm,
asked by Jeremy 
basic math
use the appropriate form of the percentage formula. findP if R=66and 2 thirds and B=150. Sorry, can't state as a fraction
asked by shari 
math
what is moving number of 90
asked by sunny 
math
anyone know ogood math tutor
asked by to ms.sue 
Statistics
College officials want to estimate the percentage of students who carry a gun, knife, or other such weapon. How many randomly selected students must be surveyed in order to be 94% confident that the sample percentage has a margin of error of 2 percentage
asked by Richelle 
Physics
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.420 . Suddenly, the plane accelerates forward, its altitude remaining constant. What
asked by Kristyn 
Math
Monica had a saving a account which paid her an interest rate of 4%. After she had this account for 12 years, she had received $192 in interest. How much money had she put into the account at the beginning of the 12 years? Please help me answer this
asked by Katy 
chemistry
calculate the pH after 0.02 mol NaOH is added to 1.00 L of .1 M sodium propanoate NaC3H5O2
asked by jk 
basic math
find the total debt to total assetss for the bakery for 2012. totl liabilities5342 total assests8754 owners capital3412 total liabilities and owners equity8754
asked by shari 
calculus
When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV1.4=C where C is a constant. Suppose that at a certain instant the volume is 330 cubic centimeters and the pressure is 99 kPa and is
asked by Anonymous 
science
What is the momentum of a twoparticle sys tem composed of a 1300 kg car moving east at 60 m/s and a second 1500 kg car moving west at 95 m/s? Let east be the positive direction. Answer in units of kg · m/s.
asked by ANON 
English
I am having to come up with a thesis statement About dreams. This is what I came up with but don't know how I should proceed with the essay. Dreams are like the housekeepers of the mind. At the end of the day they sweep out the trash like the sensory input
asked by Sue 
Calculus
The integral of [(x+3)/(x^2+9)] dx I think you split it into two fractions but im not exactly sure what to do.
asked by Anonymous 
Civics
2. One main difference between the United States Constitution and state constitutions is that state constitutions A. are much longer. B. don't provide for a legislature. C. can't be amended. D. don't have bills of rights. ? Can't find it.
asked by Sarah