Questions Asked on
October 28, 2016

Language Arts
Hi. I need to check my answers and I would hate to get them wrong because of one little mistake. Thanks! 1. An argumentative essay should present a clear thesis statement, provide strong evidence to support the thesis, and _____. a. Address
asked by Dani 
math
It takes 18 electricians 35 days to wire a new housing subdivision. How many days would 28 electricians require to do the same job?
asked by allie 
english
14. which quotation from nethergrave best conveys jeremys desire to escape the real world. a. "oh, i guess you mean those stories i make up online. You know about them?"*** b. "I played in a soccer tournament at school , and i kicked the winning goal." c.
asked by New qustions 
Social Studies
What was the unanswered question of the Nullification Crisis A). does the federal government have absolute power to place traffic as goods? B). does the state have the right to mullfiy other states laws? C). Does the fedrl government or do the states have
asked by Izzie 
Math
You must scuba dive to the entrance of your room at Jules’ Undersea Lodge in Key Largo, Florida. The diver is 1 foot deeper than 2/3 of the elevation of the entrance. What is the elevation of the entrance?
asked by vivis 
Language Arts
The narrator of stolen day says his family often laughs at him.How does he react when they do? A.He wishes he were an orphan. B.He dislikes everyone he knows. C.He appreciates the attention. D.He dislikes being teased. My answer is D. can you please check
asked by I NEED HELP PLEASE!!! 
Chem
Calculate the value of work, w, for the following system if 26.7 g of NaN3 reacts completely at 1.00 atm and 22 °C.
asked by Morgan 
(Math) PLZ CHECK ANSWERS
1. Which number is a solution of the inequality? 10.68 A)5 B)6 C)6 D)7*** 3. Which number is a solution of the inequality? 6>z(10z) A)0 B)1 C)2 D)3*** 4. What are all the subsets of the set? {1,9} A) 0, {1}, {9}*** B) {1}, {9}, {1, 9} C) 0, {1},
asked by Katrina 
Biology
Has anyone done the effect of cell size on material transport portfolio in Connections academy?
asked by Amanda 
Calculus
How to derive cosh (3x) in terms of cosh (x) and sinh (x) ? Initially I start with 1/2 (e^3x+e^3x) but I'm stuck from there because I don't know how to continue... :(
asked by Matilda 
The Pignman and Me answers!! PLZ HELP OVER DUES!
Which of the following passages from the pigman and me help to create a humorous mood? A. I just shut up and stared down at the ground b. I was terrified because I didn't know how to fight c. May you left ear wither fall into your right pocket! d. He
asked by naenaecutegirl 
Social Studies
Which of the following is a characteristic of Earth's first people? A. They lived in cold places B. They lives far from water sources C. They lived on the Asian continent D. They moved around in search of food** How do people in northern Chad adapt to the
asked by Anonymous 
math
rearrange A = 2 pi r (r+h) to make h the subject (cylinder)
asked by melanie 
chemistry
Consider these reactions where M represents a generic metal 1. 2M(s) +6HCl(aq) > 2MCl3(aq)+3H2(g) (deltaH)= 725.0 kj 2. HCl(g)>HCl(aq) (deltaH)= 74.8kj 3. H2(g)+CL2(g) > 2HCl(g) (deltaH)=1845.0kj 4. MCL3(s) > MCl3(aq) (deltaH)= 476.0kj Use the
asked by anon 
history
1. Which of the following crimes would result in a slave’s execution? (Choose all that apply.) (2 points) murder failing to work diligently plotting a rebellion stealing food 2. Which of the following was true about the life of a slave? (1 point) They
asked by You yo daddy's son 
Algebra
Working together, two people can cut out a large lawn in 2 hr. One person can do the job alone in 1 hr less than the other? How long (to the nearest tenth) would it take the faster worker to do the job? (Let x representthe time of the faster worker).
asked by Darleene Gomez 
physics
Children slide down a frictionless water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at point A and lands in the water at point B, a horizontal distance L = 2.46 m from the base of the slide, determine the height h of
asked by Amy 
Social Studies
What natural resource attracted other nations to trade with West and Central Africa beginning around AD 750? A. copper B. silver C. gold** D. salt Which of the following is an example of how people have adapted to the environment of West and Central
asked by Anonymous 
chemistry
Given these reactions : X(s) + 1/2O2(g) > XO(s) (Delta)H= 707.7 kj XCO3(s) > XO(s)+CO2(g) (Delta)H= +381.9kj What is (delta)Hrxm for this reaction? X(s)+1/2 O2(g)+CO2(g) > XCO3(s) (Delta)H= ?
asked by anon 
Algebra
Tell whether the sequence is arithmetic. if it is what is the common difference? A. no B. 1/4 C. 1/8 D. 8 My best answer is A. is that correct
asked by Leslie 
easy math
What value of c makes x^2 + 6x + c a perfect square trinomial? 3 6 9 12
asked by Don 
Social Studies
Which of the following is a serious economic problem in North Africa? A. lack of oil resources B. a decline in tourism C. unemployment** D. poor agricultural performance What language unifies much of North Africa? A. English B. French C. Moroccan D.
asked by Anonymous 
Statisics
A state university annual report showed that its retention rate was at 24% and university officials would like to increase this rate. After implementing several new programs during the last two years, the university reevaluated its retention rate. What is
asked by Tameka 
Spanish
what is a common tradition for families in the Spanish speaking world that is not necessarily a tradition in America? A)men and women often live at home until married** B)young people talk to elders using the informal "Tu" C)Children spend little time with
asked by Cyborg_DRAGon 
Physics
Three children are riding on the edge of a merry–go–round that is 84 kg, has a 1.40–m radius, and is spinning at 20.0 rpm. The children have masses of 21.0, 24.0, and 29.0 kg. If the child who has a mass of 24.0 kg moves to the center of the
asked by Cristina 
Health and Physical Education
BMI is a ratio to? •Height to body fat •Weight to height •Muscle mass to bone mass •weight to activity level
asked by Shayla 
physics
A child with a mass of 46 kg is riding on a merrygoround. If the child has a speed of 3 m/s and is located 2.2 m from the center of the merrygoround, what is the child's angular momentum? ____kg2/s
asked by Sue 
math
Tom used 5/8 yard of ribbon to tie weights on the tail of his kite. He cut the length of ribbon in equal pieces that were 1/12 yard long. How many pieces, each 1/12 yard long did Tom cut from the 5/8 yard ribbon?
asked by Thomas 
Social Studies
What natural resource attracted other nations to trade with West and Central Africa beginning around AD 750? A. copper B. silver C. gold** D. salt Which of the following is an example of how people have adapted to the environment of West and Central
asked by Anonymous 
english
None of the students ________ happy with the instructor because she ________ homework every weekend.
asked by Anonymous 
chemistry
Calculate the standard enthalpy change for the following reaction at 25 °C. H2O+C(graphite)(s) > H2(g) +CO(g)
asked by anon 
Math
Write the ratio in simplest form. 50:10 A.25:5 B.10:2 C. 5:1 D.1:5 Is the answer C?
asked by Noah 
math
If two dice are rolled and their faces noted, find each of the following probabilities: a) the sum of the two dice is 8 b) both dice show even numbers c) the sum of the two dice is 8 OR both dice show even numbers d) the sum of the numbers is 7, given that
asked by Anonymous 
PHYSICS
A ball of mass 0.15kg is dropped from a height of 1.0m onto a flat surface and rebounds to a height of 0.35m. Calculate: (a) The speed of the ball just before the impact, (b) The speed of the ball just after impact, (c) The change of momentum, (d) The
asked by urgent help needed 
chemistry
A 2.50g sample of powdered zinc is added to 100.0 mL of a 2.00M aqueous solution of hydrobromic acid in a calorimeter. The total heat capacity of the calorimeter and solution is 448 J/K. The observed increase in temperature is 21.1 K at a constant
asked by anon 
Math
An employee's annual salary was increased from $22,464.00 to $24,710.40 last year.If it is increased by the same percent this year,what will be the employee's salary? Thanks!
asked by Sandy 
Biology
Here are parts of the DNA base sequences for 7 organisms: Organism 1: GCCTAGGCATTACGCTACGTCGCATTATAC Organism 2: GCTAAGGCACTACGCTACGTCGCTTAATAG Organism 3: GCTAAGCACTACGCTACGTCGCTTAATAGC Organism 4: GCTAAGGCACTACGCTACGTCGCATTATAC Organism 5:
asked by Maria 
BUSINESS MANAGEMENT
examine the impact of one's family background and setting to work place behaviour?
asked by George 
Physics
A wire with cross sectional area 1.00 cm2 stretches 0.500% of its length when it is stretched with a tension of 20.0 N. What is the Young's modulus of this wire?
asked by Rick 
Chemistry
A mixture of NaOH and HCl is formed in a calorimeter. There is 50 mL of 2.078 Molar HCl and 51.7mL of 2.134 Molar NaOH. How would the heat capacity of the calorimeter change if you were to double the volume of NaOH? Justify your answer
asked by Max 
math
Your brother is saving labels from soup cans. He removes the labels from three cans of pea soup, five cans of vegetable soup and four cans of onion soup, and does not indicate the contents of the twelve cans after removing the labels. You need two cans of
asked by Anonymous 
Business Calculus
As the financial consultant to a classic auto dealership, you estimate that the total value (in dollars) of its collection of 1959 Chevrolets and Fords is given by the formula v = 306,000 + 1,000t2 (t ≥ 5) where t is the number of years from now. You
asked by Anonymous 
PHY 2
How many electrons per second pass through a section of wire carrying a current of 0.70A?
asked by Marl 
chemistry
A researcher studying the nutritional value of a new candy places a 4.10gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.47 °C. If the heat capacity of the calorimeter is 33.90
asked by anon 
chemistry
How many grams of potassium iodide, KI, are required to make 2.0 L of a 0.1M solution?
asked by Blake 
principle of management
examine the impact of one's family background and setting to work place behaviour?
asked by George 
chemistry
The following equation is the balanced combustion reaction for C6H6: 2C6H6(L) + 15O2(g) > 12CO2(g)+6H2O(L)+6543 kj If 7.700 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of
asked by anon 
physics
A variablespeed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration? ______rpm/s2
asked by Sue 
math
Suppose 2% of the items made in a factory are defected. Find the probability that no defective in a sample of 50.
asked by shubham 
Physics
A square metal plate with length L= 0.14 m on each side is pivoted about an axis through the center point O, perpendicular to the plate. Calculate the net torque about this axis due to the three forces shown that act at the corners, with magnitudes F1 =18
asked by Anonymous 
electric heating appliance and fan
bus bars are used in an electric iron as
asked by chris 
chemistry
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 7.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP= 30.8
asked by anon 
chemistry
An 80.0gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 8305 J. What is the specific heat of the gas?
asked by anon 
Science
Calculate the pH of a solution containing 2g of caustic soda per litre of water
asked by Deepali 
Math
In a survey of 380 households regarding the ownership of VCRs and DVD players, the following data was obtained: 350 households own one or more VCRs. 180 households own one or more VCRs and one or more DVD players. 13 households do not own a VCR
asked by Kal Jay 
math
Six slips of paper, with a different digit from 1 to 6 printed on each, are placed in a box. The papers are well mixed. One slip is drawn and replaced. The papers are well mixed, and a second slip is drawn. Find the probability of each of the following: a)
asked by Anonymous 
chemistry
When a 8.00g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 3.344 kJ·K–1, the temperature decreases by 0.400 K. Calculate the molar heat of solution of KBr.
asked by anon 
Chemistry
Please write down the redox reactions (using the halfreaction method!) a)Cl2 from OCl and Cl in acidic solution b)Br2 from BrO3 and Br in acidic solution You don't have to do both, but could you help me step up the half reactions especially for OCl
asked by Annie 
math
A total of 600 tickets were sold for the school play. They were either adult tickets or student tickets. There were 50 fewer student tickets sold than adult tickets. How many adult tickets were sold?
asked by gena 
chemistry
When 1367 J of heat energy is added to 44.1 g of hexane, C6H14, the temperature increases by 13.7 °C. Calculate the molar heat capacity of C6H14.
asked by anon 
math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of 12 calculators is sent out containing 3 defective calculators and 9 working calculators. A customer buys 5 of
asked by Jenna 
English
What is the thesis statement in this essay? Instead of using emails, mail a letter to your grandparents, an aunt or uncle, or another role model who’s older than you are. We live in a fastpaced world. We use computers to send emails and instant
asked by anonymous 
college chemistry
using cu+2AgNo3= Cu(No3)2 + 2Ag if you start with 100 grams of copper how many grams of silver can be obtained
asked by jordan 
chemistry
At constant volume, the heat of combustion of a particular compound is –3947.0 kJ/mol. When 1.311 g of this compound (molar mass = 136.58 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.343
asked by anon 
math
(Evaluate) 5g  6 for g=2 A)4 B)16 C)10 D)13
asked by Cyborg_DRAGon 
Math (Derivative)
Compute derivative using the definition of the derivative. f(x)=1+1/x^2 1+ 1/(x+h)^2  (1+ 1/(x^2))  divide by h and multiply by reciprocal 1/h(x+h)^2  1/hx^2 Next I expanded it and got this messy huge number and multiply the bottom of each other
asked by Ray 
Math
I really need help like, in 5 minutes please!! its this: 23/40 minus 11/30
asked by Princess Flower 
Calculus I
(Six pigpen problem). A 2 × 3 array of six congruent rectangular pigpens (that all look the same from above) will be in the overall shape of a rectangle R. We may use 100 feet of fencing to form the boundaries of the pigpens. Find the dimensions for a
asked by Rebecca 
Chemistry
What is the molarity of each ion present if 18.0 g of Al2(SO4)3 is present in 201 mL of solution? _____ M Al3+ _____M SO42
asked by Anonymous 
Physics
A rigid rod of mass 0.2 kg and length 1.5 m is suspended by wires at each end. The wireshave equal rest length. The wire on the left end of the rod has Young’s modulus4*10^11Pa, while the one on the right end has Young’s modulus2*10^11Pa. A 2 kg mass
asked by Anonymous 
Math
What is 23/40 minus 22/30? use benchmark
asked by Princess Flower 
Math
1/6 is the sum of two unit fractions. how may pairs of unit fractions will equal 1/6?
asked by Jason 
English
In First Confessions, Nora can best be identified as? A:flat*** B:round C:dynamic D:protagonist
asked by Anonymous 
algebra
terry earns $6.50 per hour babysitting. a. write a rule to describe how the amount of money m earned is a function of the number of hours h spent babysitting. b. how much money does terry earn if she babysits for 4 hours and 15 minutes? A. m(h)= 4h+
asked by Leslie 
chemistry
If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.
asked by anon 
Algebra
terry earns $6.50 per hour babysitting. a. write a rule to describe how the amount of money m earned is a function of the number of hours h spent babysitting. b. how much money does terry earn if she babysits for 4 hours and 15 minutes? A. m(h)= 4h+
asked by Leslie 
Photography
IS this statement true or false? 100 ISO for film = 800 ISO for digital. I'm not sure. I only learnt ISO for digital. I don't know how to check if they are both equal.
asked by Amy 
math
how many squares are there in a 3x3 geoboard? how many rectangles?
asked by jose 
Math
A glass containing 250 mL of 80% iodine solution tips over spelling part of its contents. This subsequently replaced by an amount from a mixture of 40% iodine. If a 72% solution is resulted, how much was spilled?
asked by Math 
Physics
A ball roll down a hill with a constant acceleration of 20m/s if the ball start from rest. What is it velocity at the end of 4.05
asked by Elisha 
PHYSICS
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the
asked by urgent help needed 
time speed and distance
P, Q and R start from the same place X at (a) kmph, (a+b) kmph and (a+2b) kmph respectively. If Q starts p hours after P, how many hours after Q should R start, so that both Q and R overtake P at the same time? Answer is pa/a+2b Your
asked by vipul 
math
Hospitals contain backup generators in case of power failure. A hospital has two backup generators each of which has a 2% probability of failure. Only one generator is needed to supply emergency power. What is the probability that the backup system will
asked by Anonymous 
Biomechanics
An athlete jumps straight upwards at 2.5 m/s, find: 1. a) total flight time 2. b) maximum jump height
asked by Matt 
Algebra
A company has a fixed monthly manufacturing cost of $12,000 and it costs $0.95 to produce a mechanical pencil. They then sell each pencil for $1.25. How many units must be sold before this company breaks even?
asked by Anne 
Math (Finding Vertical Tangent)
List all x values where the graph of f(x) has vertical tangents goo.gl/photos/iPu1SHA8yyBFTcZj6
asked by Ray 
chemistry
If the heat of combustion for a specific compound is 1180.0 kJ/mol and its molar mass is 40.91 g/mol, how many grams of this compound must you burn to release 114.50 kJ of heat?
asked by anon 
Math
How is an inequality different from an equation? Give a realworld scenario in which you would write an inequality rather than an equation. Sky has $25. She wants to buy two new Coats for her and a friend. Sky needs to know the average price so she doesn't
asked by Embershy 
math
You are hired by your local member of parliament to conduct a survey on unemployment, crime, taxes and mail delivery. You make up a question on each topic for your survey sheet. If the questions are arranged in random order on the sheet, find the
asked by Anonymous 
Math
I have a dash of sugar and I need to add flour with a 1:10 weight ratio of sugar to flour so how much flour do I need
asked by Rachel 
Chemistry
In the reaction of formation of sodium chloride (NaCl), 15 g of sodium is placed in contact with 20 g of chlorine. What is the reactant in excess and its mass in excess?
asked by MONICA 
Chemistry
What is the molarity of each ion present if 18.0 g of Al2(SO4)3 is present in 201 mL of solution? _____ M Al3+ _____M SO42
asked by Anonymous 
Math (Confused)
How many international directdialing numbers are possible if each number consists of a fourdigit area code (the first digit of which must be nonzero) and a fivedigit telephone numbers (the first digit must be nonzero)? a. 567,000,000 b. 486,000,000 c.
asked by Kal Jay 
Chemistry
A good vacuum pump on Earth can produce a vacuum with a pressure as low as 1.96 × 108 torr. How many molecules are present in each milliliter at a temperature of 23.0ºC?
asked by Hunter 
Chemistry
A solution of concentrated NaOH is 16.7M. If the density of the solution is 1.02 g/mL, what is the percent by mass of NaOH? I have tried different calculations and molarity and % but im not catching on at all
asked by Anonymous 
maths
A landscape designer recommends that a fence be put around a circular flower bed that is 220 ft. How many feet of fence is needed if the fence is placed 3 ft from the edge?
asked by candy 
Math
450 children take part in an art competition if there are 25% more boys than girls how many more boys than girls are there
asked by Ally 
Government
Labor group: Student labor union (I am in the labor group!) Employer group: Administration of school _____________________________________ Directions: negotiate the student/admin contract (Some of these points from a realistic standpoint I wouldn't agree
asked by Dina 
PHYSICS(MCAT)
an area several km from an electricity generating station requires 120kw power on average the total resistance is line is 0.4 ohm calculate power loss if the transmission is made ata low voltage 240V
asked by shehzad 
Chemistry
A solution of NaOH(aq) contains 5.4 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
asked by Anonymous 
English
1. He did not like some of them. 2. He disliked some of them. (Are both the same? Can we use 'some' as in #1?) 3. He couldn't find some of the books. 4. He couldn't find any of the books. 5. He could find none of the books. (Are they all grammatical? In
asked by rfvv 
MATHS URGENT
By making the substitution u=7^x and using part a, derive a hidden quadratic equation 7^(2x1) +4×7^(x1) 1/14 =0 and hence find all of the solutions to the above equation.
asked by Please help me! 
math
There are 5 black mice and 5 white mice available for an experiment. A random selection is made from the set of ten mice. What is the probability that two black mice and one white mouse will be selected? Thanks
asked by Anonymous 
math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of twelve calculators is sent out containing three defective calculators and nine working calculators. A customer
asked by Anonymous 
Math
12%+17%+3%=0.144612 The correct answer is 32% Please break it down to me where I can understand it. Thanks
asked by Sandy 
Algebra
A team won 6 out 8 games played this season? What percent of games did they win? 6 divided by 8= 0.75, but 75% is the wrong answer. What is the correct answer?
asked by Elizabeth 
Calculus
Find d^2y/dx^2 in terms of x and y given that 8x + 6y^2 = 8. Use the original equation to simplify your answer. A. y'' = (4/9y^3) B. y'' = 9y^3 C. y'' = 4y^3 D. y'' = 27y^3 E. y'' = (8/27y^3)
asked by Anonymous 
Math Derivative
Find derivative of f(x)=g(h(x)) Would the derivative be something like: g'(h(x))*h'(x) ??
asked by Ray 
C
A solution contains 19.0 g of NH4Cl in water and is 9.10% NH4Cl. What is the mass of water present?
asked by Anonymous 
Calculus
Given the vectors u = and v = , find 3u + 2v.
asked by Iris 
math
2[34+]4x98
asked by vannessa 
Graph Theory
Let S be a sequence of exactly one positive integers, n. what is the least number of 1s needed to be added to make it graphical?
asked by Bruce 
Math
How many kg of pure salt must be added to 8 kg of a 30% solution to obtain a 35% soltution?
asked by Math 
time speed and distance
P, Q and R start from the same place X at (a) kmph, (a+b) kmph and (a+2b) kmph respectively. If Q starts p hours after P, how many hours after Q should R start, so that both Q and R overtake P at the same time? Answer is pa/a+2b
asked by Dharmesh 
macomb
Express using positive exponents and simplify, if possible. −8−1 + 8−2
asked by serad 
Math
An octopus can swim v km/h in still water. When the octopus swims against a current of 5km/h, its speed is decreased by 5km/h. When it swims with a current of 5km/h, its speed it increased by 5km/h. It takes Joey the Octopus the same amount of time to swim
asked by jesse 
PreCal
find the discriminant of (2 + sqrt3)x^2  (4  sqrt3)x = 1 How do I solve something like this when it has radicands?
asked by bubble dragon 
math
Destiny buys 4 notebooks for $5.20. What is the cost per notebook?
asked by arlette 
math
3C minus 243
asked by suzy 
art
i tried researching but no website gave a clear answer. Does anyone know why cubism ended or faded away in the 1914
asked by AA 
MATHS URGENT
By making the substitution u =ln x show that the following equation has exactly one realnumber solution: 9/ln x + ln x^4 =12
asked by Please help me! 
Maths
X squared36 and 2x square 15x+18
asked by Nitesh 
BASIC TECH
With aid of pear if compass and ruler bisect a line of 12cm.
asked by ZIONKING'S 
P.E.
What is Conditioning coach and Conditioning activities..?
asked by Jo 
English
1. I don't like some books. 2. I don't like some of the books. 3. I don't eat some food. 4. I don't eat some of the food. 5. I don't buy some items. 6. I don't buy some of the items. 7. I don't know some boys. 8. I don't know some of them.
asked by rfvv 
English
If you suddenly lost everything, what would you miss most?
asked by Jo 
Math
If one be added to the numerator of a fraction it reduces to 1/5 if one be taken from the denomenator it reduces to 1/7 require the fraction
asked by Anonymous 
Math
Dan wants to cover a Shelf with shelf liner the Shelf is 4 feet wide and 2/3 feet deep what is the area of the Shelf
asked by Tamika 
Math
It take sally 2.5 hours to clean her floor. How much of the floor will have sally cleaned after only 1 hour. 1 hour = 60 min 2.5 hours =150min 60/150 =.4 so sally can clean .4 of 40% of her floor at 1 hour.
asked by Wax 
math
I am a number between 80 and 90 if you remove one from me I become a multiple of 5. If you add 2 to me I become a multiple of 8 who am I
asked by rola 
organic chemistry
inversion of S configuration to R configuration?????
asked by Anonymous 
Chem
A gas is used to fill a container up, there are 17.8 moles. What will be the new volume of the gas in the container at STP? (I don't understand which gas law to use)
asked by Maria 
math
2x^2  5 y = _______ 3x^2  4
asked by melanie 
Chemistry
A solution of concentrated NaOH is 16.7M. If the density of the solution is 1.02 g/mL, what is the percent by mass of NaOH? I have tried different calculations and molarity and % but im not catching on at all
asked by Anonymous 
AP Cemistry
Calculate the heat that must be supplied to 10.5 g of Ne(g) at 0.15 atm to raise its temperature from 24◦C to 54◦C at constant pressure. Assume that neon behaves as an ideal gas. Answer in units of J. [So, I know that we would use q = mCDT at some
asked by David 
Calculus
Given the vectors u = and v = , find ½ u. A. B. C. D.
asked by Sade 
Math practice test
Which point is located at (3, 2)
asked by Maytag