Questions Asked on
February 28, 2017

Math
Simplify to positive exponents only 1. (X^4)^3 2. (X^3)^2 3. (4^1)(3^1) 4. (4ab^)(5a^3b^2) 5. (5a^8b^12)(10a^3b^7)
asked by Mileena 
Math
Scott is attempting to approximate the value of √110. The two whole numbers that √110 will fall between are?
asked by Mileena 
Math
Does anyone have the answers for the Penn Foster Math for Business and Finance proctored exam? 060497
asked by Anon 
Math
A. The cube roots of 27 are 3 B. The fourth roots of 81 are 3 C. 3√1000=√1000 D. 4√16=4√16 Which of the following statements are true 1. B and C only 2. A, B and C only 3. A,B,C and D 4. Some other combination of A, B, C and D
asked by Mileena 
stats
Based on data from a statistical abstract, only about 10% of senior citizens (65 years old or older) get the flu each year. However, about 27% of the people under 65 years old get the flu each year. In the general population, there are 15% senior citizens
asked by jay 
maths
AB touches circle (P, 12) at A and circle (Q, 5) at B. If PQ= 25 and A&B are either side of PQ tthen AB=  please explain with diagram
asked by sanjay 
maths
A two digit number is k times the sum of the digit. By interchanging the digits, Find the number is how many times its sum of the digits. Explain method
asked by sanjay 
matlab
Please help. I've made the variable for in_vector, but I'm having trouble figuring out how to get the vector to return a row vector of num_or_digits of length 10. Write a script that takes a vector of singledigit integers and counts the occurrences of
asked by xander 
Science
What do we mean when we say, "The speed of the car is 90 km/h."?
asked by Chris 
maths
deepak is twice as old as vikas after twelve years his age will be thrice that of vikas. find there present ages
asked by khushi 
BUSINESS MATHS
William has been contracted to paint a school classroom. The classroom is 20 m long, 15 m wide and 5 m high. There are four windows (2m by 3m) and a door (2m by 1m). a) What is the cost of painting the ceiling at N$ 6.50 /m²? [5 marks] b) What is the cost
asked by Anonymous 
geography
what are plte boundaries and name the tree plate boundaries?
asked by annazy 
calculus
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y = 4√x and y = 5 and 2y+2x = 6.
asked by Sam 
calculus
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then ﬁnd the area of the region. y = 5x^2 and y = x^2+6
asked by Sam 
calculus
Find the area of the region between the curves y = x^2 and y = 2/(x^2+1).
asked by Sam 
Math grade 2
Mrs. Cruz baked 250 chocolate cookies.she baked 79 fewer strawberry cookies than chocolate cookies.how many strawberry cookies did she bake
asked by Peach 
Math grade 2
There are 458 girls and 641 boys in a school hall. How many more boys than girls are there in the school hall?
asked by Peach 
Math grade 2
Max,Noel, Cindy and Dan shared 36 candies equally. How many sweets did each if them get?
asked by Peach 
maths
Georgia spent 1÷5 of her money on sweets and used the rest to pay for her savings. What fraction of her money did she pay as saving?
asked by jay 
math
A cyclist travel at an average speed of 150km/h.how many hours will it take him to travel in metres?
asked by gbemisola 
math
2a/x12x/x2
asked by Trisha 
english
I want to write a letter to my class teacher inviting him to my birthday party
asked by ola 
math
the angles of a Pentagon are x°,2x°(x+30)°,(x+40)°,find x
asked by gbemisola 
maths
A company has 200 employees who are eligible for child care benefits. The company will pay eligible employees 25% of child day care costs, up to a maximum of $500 per child per month. If an employee has 2 children in day care at a cost of $500 per child
asked by jenn 
P.P.savani subjectscince
A long magnet is broken into 10 piece?How many north pole will form
asked by Nisarg 
Math grade 6
3 rectangular metal blocks,8 cm long, 6 cm wide & 5 cm high, were placed in an empty rectangular glass tank.water was then poured in until it reached a height of 10 cm. Another 5 similar blocks were put into the water so that it reached the brim of the
asked by Peach 
maths
A person has R200,000 invested, part at 9% and part at 8%. If the total yearly income from the two investments is R17200, how much is invested at 9% and how much at 8%?
asked by precious 
Language Arts
Can someone give me some easier questions that can simplify exactly what I am supposed to be answering in this question? The title "Another Evening at the Club" is close in meaning to "Just Another Evening at the Club." Given the events of the story, what
asked by Abigail 
Physics
a truck drives 60 m in 5s, while uniformity slowing to a stop. The average speed during this process is 12 m/s. What is the trucks jnitial speed at the beginning of this process? What is the magnitude of the trucks acceleration during this process? I have
asked by Maria Garcia 
math
A school debate team has 4 girls and 6 boys. A total of 4 of the team members will be chosen to participate in the district debate. What is the probability that 2 girls and 2 boys will be selected? A.3/7 B.4/10 C.1/14 D.1/210
asked by Curt 
Science
An eagle flying along a horizontal path drops a small snake from a height of 6.5 m while travelling 5.0 m/s. How far does the snake travel horizontally before it hits the ground below? G: R: E: S: A:
asked by Michael 
Chemistry
Tooth enamel consist mainly of hydroxyapatite (Ca5(PO4)3(OH). When tine (II) Flouride is added to toothpaste it reacts with the enamel to product a more decayresistant material fluorapatite (Ca(PO4)3F. The byproducts of this reaction are tin (II) oxide
asked by Scott 
DISTANCE TIME AND SPEED
if the speed of a car is increased from 90km/h to 120km/h, the time is reduced by one hour to reach the destination. Calculate the distance between the two towns.
asked by ROBERT 
Math
b+6
asked by Shah 
math
what is the cost of nine ounces of cheese at $.80 per pound?
asked by sai 
Algebra 1
The area of a rectangular pool is given by the trinomial 2y^2+5y42 . What are the possible dimensions of the pool? Use factoring. a. 2y+7 and y6*** b. 2y2 and y+6 c. 2y7 and y6 d. 2y7 and y+6 tbh im guessing. i have no clue. can someone help
asked by someone 
optional math
Seventh term of geometric series is 64 and sum of its 10 terms is 1023. Find its 15th term.
asked by Aakash 
math
what is the cost of nine ounces of cheese at $.80 per pound?please help 16 ounces = 1 pound 9 ounces = 0.5625 pounds
asked by sai 
act
The equation we are given (−at2+bt+c) is a parabola and we are told to describe what happens when we change c (the yintercept).
asked by Colo 
Math
Find the function Rule. x= 2 1 0 1 2 y= 9 4 1 6 11 It's hard for me to find the answer. Please help me!
asked by Ashlie 
World History
What key advantage did Spanish invaders have over the native peoples they conquered?
asked by Matt Nolan 
math
what is the cost of nine ounces of cheese at $.80 per pound? can anyone solve it and explain me. thank you.
asked by sai 
Math
write the ratio as a fraction in lowest terms. Compare in inches 3 feet to 28 inches
asked by Persephone 
math
One winter day, the temperature was between –14°F and –3°F. Which inequality represents the range of temperatures, t, during that day?
asked by joji 
Algebra
What is the closed linear form for this sequence given a1 = 15 and an + 1 = an  8? A) an = 7  8n B) an = 7 + 8n C) an = 7  8n D) an = 15  8n my best answer is C
asked by Leslie 
Math
A manufacturer uses a mold to make a part in the shape of a triangular prism. The dimensions of the part are shown below. Dimensions  a14.4 mm b8.25 mm c7.5 mm h2.1 mm Which estimate is closest to the volume in cubic millimeters in the part? A)625
asked by potato 
Maths
John and Kathleen are fertilizing their 13,000 square foot lawn,One bag of fertilizer covers 5,000 square feet.What is the fewest number of bags they need to purchase to fertilize their lawn ?
asked by prince 
Science
The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s2). If an object’s mass is m=58.5 grams, what is its weight? Same goes to 45.93 grams. If you could answer as soon as possible that would be great!
asked by Davye 
physics
A student in the fitness center lifts a weight with m = kg from the floor to a height of meters in a time of seconds. Find the average power exerted by the student during this time. Give your answer in watts (W) and with 3 significant figures.
asked by dali 
Maths
a loan of 2000 is being amortized over 48 months at a interest rate of 12 peecent compounded monthly, the outstanding loan at the beginning of 36 month is ?
asked by Abdul Rehman 
algebra
What is the closed linear form for this sequence given a1 = 15 and an + 1 = an  8? A) an = 7  8n B) an = 7 + 8n C) an = 7  8n D) an = 15  8n my best answer is C
asked by Leslie 
Physics
A plane travels 3 km due north, then 5 km due northeast. Represent these two displacements graphically and determine the resultant displacement by finding is magnitude and direction.
asked by Sarah 
Physics
An object is given two initial velocities, one that has a magnitude of 60.0 ms1 and points along a direction that is 35.0° north of east and the other has a magnitude of 55.0 ms1 that points 15.0°, also north of east. Determine the resultant velocity
asked by Sarah 
math
If the variance of a light bulb is 400 and the mean lifetime of a light bulb is 600 hours. find the probablity of a light bulb lasting at most 622 hours
asked by Jessica 
math
what is the particular integral of xe^x??
asked by tish 
Math
How do you simplify radicals √162
asked by Mileena 
IPC
if you throw a 0.145 kg baseball in 18 meters in 0.45 seconds, what is the magnitude of momentum of that baseball?
asked by Jeff 
Math
Calculate the perimeter of a rectangle whose length and breadth are 15m and 12m.find the cost of fencing the field at the rate of rs 25 per meter.
asked by Anonymous 
Maths
26cm of wood is cut off a board 130cm long . What percentage has been cut off ?
asked by Melissa Siwela 
Pre Calculus
Am I correct? Please show me how if I am wrong 1.How many 6 digit numbers can be made using each of the digits {8,8,9,5,5,6} exactly once? 6!=702 2.How many more arrangements are there from all of the letters of the word MARMALADE than there are from all
asked by John 
chemistry
THE QUESTION ASKS TO CALCULATE THE AMOUNT (IN GRAMS) OF CARBON DIOXIDE FROM THE AMOUNT OF SODIUM BICARBONATE THAT YOU USED IN THE REACTION Run 1. The reaction of citric acid and sodium bicarbonate is written as H3C6H5O7(aq) + 3 NaHCO3(aq) → Na3C6H5O7(aq)
asked by JENNIFER 
Chemistry
Use the concentrations and volumes of hydrogen peroxide and KI before mixing (Table 1), calculate the postmixing concentrations. Before mixing: [H2O2] = 0.88M [KI] = 0.500M Table 1: before mixing 1. Vol H2O2 = 4.0 mL, [H2O2] = 0.88M 2. Vol KI = 1.0 mL,
asked by Amanda 
Math
True or false (check) A. All integers are natural numbers FALSE B. All rational numbers are integers TRUE C. All natural numbers are whole numbers TRUE D. All rational numbers are roots FALSE
asked by Mileena 
Social Studies
Which of the following indicates a rise in racial tensions in the 1920s? A. increased enlistment of African American men into the military B. movement of many African Americans to the South C. passage of several federal laws to end Jim Crow practices D.
asked by JamesSk8 
SCIENCE HELP ASAP
1. in an atom, electrons_____ 2. dot diagrams are used to represent_______ 3. the maximum number of electrons in the second energy level of an atom is________
asked by schweppes 
social studies
which statement best explains the concept of separation of power
asked by jadah scott 
Social studies
Please help!! Are any of my answers correct? 1, which reason best explains the motivation for American expansion? It would be important to maintain political influence in developing countries A US naval presence around the world would decrease the chance
asked by Hey 
homework
i dont get this question pliss help it says a pond is 36m long a duck swims 4 lengths of the pond each day how far does the duck swim in four weeks?
asked by martyna 
Math
Write as a radical power 1. 3√13^2 2. √(2/3)^5
asked by Mileena 
SS
If the middle east runs out of oil, what other resources can they have?
asked by Agala 
Language Arts
The play is The Straw by Eugene O' Neil (scene 145) 1. Part B Which line of dialogue is the best evidence for the answer to Part A? A. No, your kind never realizes things till the crash comes... B. A majority of the most influential men of this city are
asked by EmberShy 
Intermidiate Algebra
While hovering near the top of a waterfall in a national park at 23042304 Ã¢â‚¬â€¹feet, a helicopter pilot accidentally drops his sunglasses. The height h left parenthesis t right parenthesish(t) of the sunglasses after t seconds is given by the
asked by Anonymous 
science
why dos buying food that is grown in your local area help prevent loss of biodiversity ??????
asked by HELP ME ASAP PLS 
chemistry
what is the net ionic equation for AlBr3(aq) + 3LiOH(aq)
asked by esme 
physics
Find the length of a pendulum that oscillates with a frequency of 0.25 Hz
asked by Anonymous 
math
You flip a fair coin 10,000 times. Approximate the probability that the di fference between the number of heads and number of tails is at most 100.
asked by D 
math
Identify and give all the appropriate names for three different quadrilaterals or other geometric figures in this Navajo eye dazzler design.
asked by Please help math 
Science
How much power is lifted if a person lifts 60N weight up 2 meters in 10 seconds?
asked by Susie 
math 1
3x  8y = 17 2x 7y = 18
asked by Rocky 
math
The container when 3/5 filled can hold 45 marbles. a) How many will it hold when filled? b) How many more marbles are needed to completely fill the container?
asked by indira 
math
A circular pie was cut into 6 equal slices. Calculate the angle formed by each slice.
asked by indira 
History
Was James Bevel the one who founded the Children's Crusade in 1963?
asked by Acasia 
math
A roll of ribbon is cut into 28 pieces, each \frac{3}{4} m long. What was the TOTAL length of ribbon on the roll?
asked by indira 
Math grade 6
3rectangular metal blocks,8 cm long, 6 cm wide & 5 cm high, were placed in an empty rectangular glass tank.water was then poured in until it reached a height of 10 cm. Another 5 similar blocks were put into the water so that it reached the brim of the
asked by Peach 
Science
A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he
asked by Susie 
math
Chris went to his friend Andrew’s birthday party. He travelled 0.55 the distance by bus and walked the rest. a) What fraction of the distance did Chris walk? b) If Chris walked a distance of 1.8km, how far from Andrew did he live? Answer km
asked by indira 
math
The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate: a) The mass of one wafer. b) The number of wafers that the box can hold.
asked by indira 
Physics
A water wave with a wavelength of 35.6 cm approaches a wall with a large opening in it. The hole begins to close. What size does the hole in the wall need to be for the wave to noticeably diffract through the hole? Justify your answer.
asked by Student12 
Physics
A wave with an amplitude of 31 mm interferes with another wave that has the same wavelength, an amplitude of 13 mm. a) What is the maximum amplitude of the resultant wave if the two waves are in phase? b) What is the maximum amplitude of the resultant wave
asked by Student12 
Physics
A light wave strikes a lake at an angle of incidence of 65.4 degrees. At what angle of refraction will this wave travel through the lake? (The index of refraction of water is 1.33 and the index of refraction of air is 1.00)
asked by Student12 
math 1
6x+8y=4 8x3y=19
asked by Rocky 
math
Fifteen oranges cost $6.00. a) How much will Anna have to pay for 32 oranges? b) How many oranges can she buy with $32.00?
asked by indira 
Science
A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he
asked by Susie 
math 1
9x4y=3 8x3y=1
asked by Rocky 
Math Plz help ASAP
In football, a field goal is worth 3 points. Which function rule relates the number of field goals, f, and the number of points, p? A) f=3p B) p=3f C) 3+f D) p=3+f Which function rule is represented by the table? X[0,1,2,3 Y[3,5,7,9 A)y=x+3 B)y=x+6
asked by ThatOneGuy 
Science
A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he
asked by Sue 
math
The mass of a packet of wafers is 64 grams. In each packet there are 4 wafers. If the packets must be placed into a box that can hold a maximum of 3.2 kilograms, calculate: a) The mass of one wafer. b) The number of wafers that the box can hold.
asked by indira 
Science
A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he
asked by Sue 
math
Sam worked from 7:30am to 4:00pm from Monday to Friday. If he earns $24.00 per hour for the first 35 hours and time and a half for over time, calculate the following: a)The number of hours he works weekly. b) Regular time salary c) Overtime Salary d)Total
asked by indira 
Science
how much work is done on a 50kg cart that is pushed 10m at a constant rate of 5m/s^2
asked by Sue 
math 1
6x + 8y=4 8x 3y=19 I did elimination. 82y=82
asked by Rocky 
Physics
A driver jumps off the 3.0m diving board with an initial velocity of 5.0m/s. (a) Determine the maximum height, (b) The time to reach the maximum height, (c) The time it took to touch the water, and (c) The speed when touching the water.
asked by Martin 
Social Studies
What Canadian landform covers about half of the country? A.the Interior Plains B.the Canadian Shield C.the St. Lawrence Lowlands D.the Yukon Territory
asked by Carli 
Marketing in a Services Environment
The convenience of service factory locations and operational schedules assumes little importance when a customer has to be physically present throughout the service delivery or even just to initiate and terminate the transaction. (Points : 1) True False
asked by Christopher 
social studies 6th grade
in what year did the Zapatista guerrilla movement begin?
asked by Nyan 
Marketing in a Services Environment
An example of a form of personal communication is (Points : 1) The internet Signage Press conferences Telemarketing Gifts
asked by Christopher 
Math
Write a story problem that can be represented with 1152÷24
asked by Sophia 
Physics
A crazed armadillo with a mass of 60kg stands at the center of a rope which was initially strung horizontally between two poles 50m apart. Its weight causes the rope to sag 1.20m. What is the tension in the rope Solution: 2Tsin(angle)  mg = 0 Tan1() =
asked by jjh 
Marketing in a Services Environment
The convenience of service factory locations and operational schedules assumes little importance when a customer has to be physically present throughout the service delivery or even just to initiate and terminate the transaction. (Points : 1) True False
asked by Christopher 
Science
What percentage of the energy from the grass would the hawks get in the trophic level pyramid of a food chain
asked by Mariela 
Statistics
by what factor should the sample size in a poll be increased in order to cut the margin of error in half
asked by Andrzej 
Math  implicit differentiation
Suppose 5x^2+2x+xy=2 and y(2)=−11. Find y′(2) by implicit differentiation.
asked by Anonymous 
Statistics
by what factor should the sample size in a poll be increased in order to cut the margin of error in half
asked by Andrzej 
cal
f(x)= (x3)^2 find the average rate of change between the following points: a) x=1 and x=3 b) x=4 and x=7
asked by tor 
Science
A pendulum is made with a bowling ball as the bob and a wire attached to the ceiling, as shown in the illustration below. The person in the illustration pulls the bowling ball back until it touches his nose, then releases the bowling ball. Assume that he
asked by Sue 
Math
Jack broke apart 5 x 216 as (5 x 200) + (5 x 16)to multiply mentally.What strategy did Jack use
asked by Tyleesha 
Geometry
4. Name a pair of alternate interior angles. pretend this (
asked by Riilesss 
cal
f(x)= x^53x^3x+6 approximate any real zeros and relative extrema
asked by tor 
CHEMISTRY: HESS'S LAW need help!
I'm just overly confused on how to begin this especially with the fractions... please show step by step if you could. Quiz very Soon! Example A: H2(g)+1/2 O2 (g) > H2O(l) ... ΔH= 285.8 kJ N2O5(g) + H2O(l) > 2HNO3(l) ΔH= 76.56 kJ 1/2 N2(g) +
asked by Madi 
science
The effects of electricity can be explained by the structure of the _______?
asked by Anonymous 
computer programming
Design the logic for a program that allows a user to enter any amount of numbers up to 10 or until a sentinal value of 1 is entered. Then the program displays the count of the numbers entered and numeric average of the numbers (not including the 1 of
asked by robert 
Calculus
Consider the given function and the given interval. f(x) = (x − 3)^2, [2, 5] (a) Find the average value fave of f on the given interval. fave = (b) Find c such that fave = f(c). c = (smaller value) c= (larger value)
asked by Anne 
Math
Write each power as radical 1. 12^1/4 2. (50)^5/3
asked by Mileena 
Chemistry
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure, except only a single titration was performed which required 16.22 mL of 0.100 M Na2S2O3. Calculate the number of moles of Na2S2O3 used in the
asked by Erin 
Math
At an animal shelter,there are 15 dogs, 12 cats, 3 snakes, and 3 parakeets. A.what percent of the number of cats is the number of dogs? B.what percent less parakeets are there than dogs? C.what percent less parakeets are there than dogs? D.which animal has
asked by Obiageri 
Math
Suppose a total of 3572 seats were sold for a performance.How many seats in the theater would be empty that evening. Explain how you found your answer
asked by Alyssa 
Algebra
Do the ratios have to have the same scale factor to be a dilation? My friend says yes, or else the scale factor would be useless. I on the other hand say no because it's still a dilation as it's an reduction. Here's the instructions: "For Exercises 58,
asked by Blocked Number 
Math
Find the area for the circle (use 3.1 for pi) Round to the nearest tenth The circles radius is 23 yd.. My answer is 1666
asked by Chloé 
English
1. We are on the school baseball team. 2. We are in the school baseball team. (Do we have to use 'on' in this sentence? What about "in"?) 3. Don't be angry with me. 4. Don't be angry at me. (Are both OK? Can we use both prepositions?)
asked by rfvv 
history
how democratic was andrew jackson? I understand that his name is tied very closely to democracy, but some of his actions were like a king's. he was even given the nickname "king andrew the first" how would you measure his 'democraticness' without saying he
asked by maya 
Calculus
The graph of the equation is x^2+xy+y^2=9 a) What is the equation of the right most vertical tangent? b) That tangent touches the ellipse where y= what? I've calculated the derivative to y'=(y2x)/(2y+x) and I found the horizontal tangents. How do I do
asked by Anonymous 
Math
Jose decided to make a vegetable garden in his rectangular backyard. The garden will be 25 ft. long and 12 ft wide. how many feet of fencing material will he need to surround the garden with a fence?
asked by Kalvin Sandoval 
Related Rates
A street light is at the top of a 10.5 ft. tall pole. A man 5.4 ft tall walks away from the pole with a speed of 3.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 47 feet from the pole?
asked by Jamie 
Chemistry
If a chemical reaction uses 140 g of N2. How many moles is this? n=m/M
asked by Mileena 
physics newton's third law
Two blocks are attached to opposite ends of a massless rope that goes over a massless, frictionless, stationary pulley. One of the blocks, with a mass of 4.5 kg accelerates downward at 34g.
asked by jjh 
English
1. Sam is looking for his teddy bear. 2. Sam is looking for his toy bear. (Are both OK? Which one do people use frequently, teddy bear or toy bear?) 3. You are sitting on my seat. 4. You are sitting in my seat. (Which preposition do we have to use?)
asked by rfvv 
English
1. I don't like pears, either. 2. I like pears, too. 3. I also like pears. 4. I like pears as well. 5. I also don't like pears. 6. I don't also like pears. 7. I don't like pears as well.  Are they all grammatical? Can we
asked by rfvv 
Math  Linear Approximation
Use a linear approximation to estimate the number (27.07)^(2/3)
asked by Anonymous 
calculus
The base of a certain solid is the triangle with vertices at (−6,3), (3,3), and the origin. Crosssections perpendicular to the yaxis are squares. Then the volume of the solid?
asked by Sam 
Chemistry
Calculate the wavelength of nitrogen molecule travelling with a speed of 500 m/s
asked by Anonymous 
Maths
The ratio of the number of girls to the number of boys in a sports club is 3:6. There are 15 more boys than girls in the club. How many pupils are in the club altogether?
asked by Jenecia 
Math
Why is log1/a(x), a reflection over the x axis?
asked by Kevin 
Chemistry
My school notes say : pH < pOH is acidic pH > pOH is basic Is this correct, I was thinking that if the pH is less than pOH than it was a basic solution
asked by Fay 
Chemistry (Urgent)
Ksp of PbI2 at 25 degrees celcius and 15 degrees celcius is 7.5×10^8 and 7.5×10^9 respectively. (Pb=207 I=127) 1) write an expression for the equilibrium of PbI2 2)write an equation for the Ksp of PbI2 3)calculate the solubility of PbI2 at 25 degrees
asked by Isura 
Chemistry
If the half life of a reaction A is 2 mins,how long will it take A to reach 25% of its initial concentration ?
asked by Nargis 
Math
Four students share 6 oranges equally. How many oranges does each student get?
asked by RD 
Math
Five girls share nine feet of ribbon equally how many feet of ribbon does each student recieve?
asked by RD 
Science
Why is the weight of an object less on the moon than on Earth?
asked by RD 
calculus
w(t)= f(t)/(c+t) w'(t)=? I got f'(t)(c+t)f(t)/(c+t)^2 as the derivative and I'm having a hard time trying to prove that f(t_0) = f'(t_0) (C+t_0) Help is always appreciated :)
asked by Mable 
math
You new sales job offers you a choice of salary plans: a) 6% of all your sales; or b) a monthly salary of $1500 and 4% of all your sales. How much do you have to sell in order for the first plan to be equal to the second plan? Show how you would use one or
asked by emely 
Math
What is the approximate circumference if diameter is of 23 feet
asked by Karen 
Physics
An ideal gas in a moveable piston is allowed to reversibly expand by slowly heating at constant pressure. a. Derive the equation for the work done reversibly as a function of the initial and final temperatures.( i have used w=nrtln(v final/v intial) i
asked by Carlos 
math
A pair of dice is rolled. Find the probability of rolling a) a sum not more than 1010, b) a sum not less than 77, c) a sum between 33 and 77 (exclusive).
asked by Anonymous 
math
it cost a company 15,000 per day to operate a plant no matter how much product they produce. in addition, it cost 75 per unit produced. write an equation that represents the total cost to operate the plant each day. use the variable x to represent the
asked by emely 
Physics
5 moles of ideal gas cloud has an initial pressure of 1.00 bar, initial volume of 100.0L and temperature of 25.0ºC. The cloud expands adiabatically to a final volume of 900.0L. Cp,m= 15.79 J mol1 K1 . What is the final pressure and final temperature of
asked by Orbit 
Maths
A commitee consists of six men and four women.A randomly chosen subcommittee is made up of three of the committee members.What is the probability that (a) they are all women (b) two of them are men
asked by Gbotty