Questions Asked on
September 11, 2015

chemistry
Given that a 0.160 M HCl(aq) solution costs $39.95 for 500 mL , and that KCl costs $10/ton, which analysis procedure is more costeffective?
asked by madie 
Chemistry
An empty gas cylinder of 40L is to be filled with air (ideal gas) to 5000psia and 25C. The gas cylinder is being filled by a pump that increases its flow by 20 moles per minutes after turned on. How long will it take the pump to fill the tank? My work:
asked by Peb015 
geometry
In a triangle, if 3angleD=4angleS=6angleR, Calculate the measures of angle D, angle S and angle R.
asked by abhishek 
math
Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths
asked by John scott 
Physics
A treasure map instructs you to walk 27 m south, followed by 70 m east, then 64.5 m north, and finally 28.5 m east. Determine the magnitude of your total displacement, if you follow these instructions. Calculate the answer in meters (m) and rounded to
asked by Anonymous 
Math
Solve this radical equation algebraically: 2x5(sqrtx)3=0
asked by Bob 
Math
14 2 7 3 9=10 insert symbols to make it work 9*2 11 8 4 1=60
asked by Lina 
Physics
During an allnight cram session, a student heats up a 0.360 liter (0.360 x 10 3 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 18.1 °C, and the beaker is filled to the brim. A short time later when the student returns, the
asked by can anyone help me with this 
Ranoto
Assess the extent to which bad road use has a direct impact on the physical,emotional,social and economic aspects to family,the community and the country
asked by Phuti 
calculus
hey guys, quick question (8 + sqrt 20)/6 what does this equal
asked by Karlie 
math
Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths
asked by John scott 
ENN103F
Describe two improvement that the people of lkror have enjoyed from the state assembly and what are the two aspects that still need improvement?
asked by Lawrence 
Gemometry
< = ANGLE SIGN
asked by PLEASE HELP ASAP 
Social studies
Which is the most likely reason why Spain controlled so much of the Americas in the 1400s and 1500s? (1 point) A.The Vikings did not stay very long in North America. B.Other Europeans wanted to know about Ancient Rome. C.Many explorers were more interested
asked by HELP NEED PLZPLZ 
geometry
The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ? Use the distance formula to help you decide: .
asked by william 
Biology
how does the number of electrons in an atom determine what kind of bond it can form?
asked by dylan 
fitness
4. Which of the following behaviors might help you maintain good emotional and mental health? (2 points) keeping a journal of your accomplishments and interests keeping to yourself and not socializing with new people maintaining friendships with people who
asked by Jeweleah 
Social studies
12. Why did the English not try to settle North America earlier than the late 1500s? (1 point) A.They were not as strong as their European neighbors. B.They were isolationists who preferred to keep to themselves. C.They did not believe there was anything
asked by help plzplzplz 
Trigonometry
a boat travels on a course of bearing n 37 10' W for 79.5 miles. How many miles north and how many miles west has the boat traveled?
asked by Mark 
math
The number of digits used to write all the page in a book is 35. How many pages has the book?
asked by John 
Math
How many digits are needed to write down all from 1100?
asked by John 
Math
Romain,fabien,lise,jen and adrien stand in a single row.romain is after lise.fabien is before romain and just after jennifer.jennifer is before lise but she is not d first.where iS adrien?
asked by John 
physics
Two springs have force constant K1&K2 (K1>K2) .each spring is extended by same farce F. If their elastic potential energy are E1&E2then E1/E2)is?
asked by Bn sharma 
physics
a man can swim in still water At 5 km/h . in order to cross the river through shortest path , at what approximate angle he should swim at, with the upstrem ?
asked by Akansha 
Vezilwazi secondary school
I'm in grade10 and I'm doing Life Science,Maths.L,Business and Tourism........I want to be a Nurse it is Possible for meh to be that???? Help! My Number 0714410106
asked by Busie Bhuda 
Health
Which of the following secondary sex characteristics do not develop during the teen years? (1 point) development of breasts in girls development of body hair in boys development of ovaries in girls and testes in boys development of acne in boys 2. What is
asked by Help(aSAP)plz 
math
Product A is a 12ounce bottle of generic popcorn oil that sells for $1.39. Product B is a 24ounce popcorn oil bottle that costs $2.79. Which is the better buy?
asked by amanda 
Math Help!
You have $60.00 in your wallet and want to buy some new CDs. If the CDs are $11.00 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer
asked by Amber 
math
an electric pole is 24 meter high casts a shadow of 20 meter long.find the height of the tree if it castes a shadow of 15 meter long under similar conditions
asked by yashlion 
Math
Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved
asked by shirell 
math
an electric pole is 24 meter high casts a shadow of 20 meter long.find the height of the tree if it castes a shadow of 15 meter long under similar conditions. [explain and make the table if direct or inverse variation]
asked by yashlion 
math Help
Multiplying and Dividing Fractions Carol is baking cookies and needs two and onefourthcups of flour, twothirdscup of white sugar, onefourthcup of brown sugar, andone sixteenth cup of baking soda. Use this information to answer the following questions.
asked by gavin 
English
Which of the following is a primary source from early American and colonial literature? A. "Religion in the Colonies" Discovery Education streaming movie B. An essay about Olaudah Equiano C. "Sinners in the Hands of an Angry God" by Jonathan Edwards ******
asked by Cassie 
English
Read the following example. What is the effect of the meter in these lines? I wandered lonely as a Cloud That floats on high o'er vales and Hills. When all at once I saw a crowd, A host, of golden Daffodils; Beside the Lake, beneath the trees, Fluttering
asked by Cassie 
calculus ab
Use a graphing utility to graph the function and visually estimate the linits h(x)= x^2 + 4x
asked by chris 
math
3xsquare
asked by omendra 
math
3xsquare
asked by omendra 
math
Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =
asked by jake 
Health
Which of the following secondary sex characteristics do not develop during the teen years? (1 point) development of breasts in girls development of body hair in boys development of ovaries in girls and testes in boys development of acne in boys 2. What is
asked by Help(aSAP)plz 
history
1. Africa's Rain forests are located on either side of the what A. Equator B. Coastal C. Sahara D. Deserts 2. Much of the area north and south of Africas rainforest is _____ a rolling grassland A. Tundra B. Desert C. Savanna D. Semiarid i think 1. is a
asked by jake 
math
Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =
asked by jake 
Physics
An object travels with a constant acceleration for 10 s. The vectors in Figure 341 represent the final and initial velocities. carefully graph the x component of the velocity versus time and the y component of the acceleration versus time, in a Vx vs t
asked by Alyssa 
Physics. Help Please
Gabriele enters an eastw straight bike path at the 3.0km mark and rides w at a constant speed of 8.0 m/s. At the same time, Xena rides east from the1.0km mark at a constant speed of 6.0 m/s. 1. Write function x(t) that describe the position of Gabriele
asked by Matt 
maths
Two places on the same meridian have latitudes 10 degree south and 53 degree north. What is their distance apart measured along the meridian?(radius of the earth R=6400km,pi=22/7)
asked by precious 
science
To answer these questions you will need to refer to the volume of water dripping over time graph that you created in your science notebook from interactive art plotting a line graph activity. 1. According to the trend shown by the graph what volume of
asked by jake 
Physics
An object travels with a constant acceleration for 10 s. The vectors in Figure 341 represent the final and initial velocities. carefully graph the x component of the velocity versus time, the y component of the velocity versus time and the y component of
asked by Alyssa 
Physics
A pilot flying low and slow drops a weight; it takes 2.8 s to hit the ground, during which it travels a horizontal distance of 100 m . Now the pilot does a run at the same height but twice the speed. How much time does it take the weight to hit the ground?
asked by Lina 
Pre Algebra
I have a rectangle that represents one whole. There are three sections that equal 1/3 each. I want to subdivide those sections into even & uneven squares. EX: 1/3 divided by 2 = 1/6 I am having trouble identifying the uneven squares. Could you please show
asked by Kyle 
Math
In your own words like the rules for multiply in your own words like the rules for multiplying integers then write the rules for dividing integers
asked by Anonymous 
Math
The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four
asked by Anonymous 
Africa Regional Overview
Which of the following prominent geographic features is located in eastern Africa? A)Sahara Desert B)Kalahari Desert C)Congo D)Great Rift Valley
asked by Anonymous 
science
1. According to the trend shown by the graph what volume of water would you expect after 35 seconds of dripping A. Approximately 10mL B. Approximately 12 mL C. Approximately 20 mL D. Approximately 25 mL 2. What is the relationship between the volume of
asked by lizbeth 
math
Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =
asked by lizbeth 
math
Find the greatest number of three digits that can be exactly divided by 75,45 and 60
asked by Ravi 
Social Studies
Hernando de Soto's mission accomplished its original objectives. True or False? I think true? Not sure?
asked by Amber 
math
Is one centiliter greater than one kiloliter?
asked by Fayth 
biology
An individual who is heterozygous for Eye color would be? A.two alleles for brown eyes. B. One allele for brown eyes and one blue eyes. C.two alleles for blue eyes.d.blue eyes I am think b.
asked by woody 
kwasa secondary school (subject Life orientation)
illustrate three ways on how this issue can impact negatively to the health of the community or school
asked by Thwala Philile 
eced
Dr.tutus used a twin study to determine the influence of heredity on emotionality.if emotional ality is influenced by heredity, he will found the level of emotional is more similar in? Siblings pairs then in identical twins. B.fraternal twins than in
asked by woody 
Social Sudies please help
which of these people is in the labor force 15 year old high school student who wants a job a 32 year old mother who stopped working a 46 year old woman who is unemployed but seeking a job a 68 year old man who is retired 
asked by School 
algebra 2
How can you model data with a linear function? can i have example to please
asked by cj 
Algebra
A whole number is added to a number with two didgets after the decimal point. To make sure the answer is reasonable, how many didgets should the sum have after the decimal point ? A  none B  1 C 2 D infinitely many
asked by Tay 
Homework
An example of nickel picking is ? A.parents enrolling their active child in many structured ,sedentary,activites,hopes that he will calm down. B.parents enrolling their active child in many athletic activities in hopes that he will burn off some stream .
asked by Woody 
Calculus
solve for x: 6x=ex+1
asked by Anonymous 
English
In "My Brother's Keeper," Ted and Jamie are developed in contrast to one another by describing their fears of the unknown.******* emotional reactions. interactions with their parents. distrust of one another.
asked by Patty 
Chemistry
To what decimal place should each answer be rounded? and how many significant figures does the rounded answer have? a) 9cm + 2.8 cm= 11.8cm (unrounded) b) 0.135 atm + 0.6 atm= 0.735 atm (unrounded) PLEASE HELP
asked by Albert 
Math
Find a negative and a positive coterminal angle for Ө = 2pi/3. 4pi/3 and 8pi/3
asked by Anonymous 
chemistry
how many kilojoules of energy are required to bring 800.0g water from 20.0c to the boiling point. not sure what formula is? 4.184j
asked by melissa 
eced
Which situation will lead to the largest heritability coefficient for reading disability? A.well educated providing stimulating that fosters children's reading ability. B.less educated providing academically stimulating that fosters children reading
asked by woody 
Physical Science,Maths, L.O,Life Science
What Subject do i need to study at FET Level if i want to become a Social Worker one day
asked by Inathi Melaphi 
CALCULUS
20.) How do I find the zeros of the function algebraically? ex1) f(x)= x^3 4x^2 9x +36 ex3) f(x)= 3 +(5/x) ex7) f(x) = (2x^29)/ (3x)
asked by SARA 
algebra
is f(x)=5+√2x an increasing or decreasing function?
asked by a 
algebra
Lauren wants to purchase custommade bumper stickers to advertise her business. Two websites offer different deals: Website A: Pay a fee of $80.00, plus $0.35 per bumper sticker or Website B: Pay a fee of $49.25, plus $0.50 per bumper sticker Website B is
asked by john 
science
If air at seal level with a temperature of 27C is forced up a mountain slope and the air's dew point at the condensation level is 14C at what elevation will condensation begin?
asked by kayleigh 
accounting
Event: One stockholder reported to the company that 330 shares of his East Hill stock had been sold and transferred to another stockholder for $3,700 cash. what effects does this event have on the balance sheet of a company? How do I input this in the
asked by linda 
physics
A mountaintop is a height y above the level ground. A woman measures the angle of elevation of the mountaintop to be θ when she is a horizontal distance x from the mountaintop. After walking a distance d closer to the mountain, she measures the angle of
asked by jasleen 
physics
A swimmer, capable of swimming at a speed of 1.18 m/s in still water (i.e., the swimmer can swim with a speed of 1.18 m/s relative to the water), starts to swim directly across a 2.16kmwide river. However, the current is 1.19 m/s, and it carries the
asked by amanda 
physics
A rocket is fired at a speed of 66.0 m/s from ground level, at an angle of 63.0 ° above the horizontal. The rocket is fired toward an 31.2m high wall, which is located 28.0 m away. The rocket attains its launch speed in a negligibly short period of time,
asked by amanda 
physics
You are traveling in a convertible with the top down. The car is moving at a constant velocity of 17.5 m/s, due east along flat ground. You throw a tomato straight upward at a speed of 13.0 m/s. How far has the car moved when you get a chance to catch the
asked by ar 
Physics
Two passenger trains are passing each other on adjacent tracks. Train A is moving east with a speed of 35.5 m/s, and train B is traveling west with a speed of 33.4 m/s. (a) What is the velocity (taking due east to be the positive direction) of train A as
asked by JJ 
physics
One cubic centimetre (1.0 cm3) of water has a mass of 1.0 × 10−3 kg. (a) Determine the mass of 1.0 litre of water. Assuming that biological substances are 98% water, estimate the masses of (b) a cell with a diameter of 1.0 μm, (c) a human kidney, and
asked by Jas 
physics
Two planes are initially separated by a horizontal distance of 350 km. Plane A is positioned 350 km west of the Plane B. Plane A is initially traveling at a velocity of 60 m/s east. Plane B is traveling at a velocity of 45 m/s west. If plane A begins to
asked by Vj 
english help please!!
n no fewer than three sentences, critique the following paragraph. Explain where it could be improved. Then, in your own words, rewrite the paragraph to make its writing stronger. Make sure you include a hook, supporting evidence, and a topic sentence. Use
asked by Oscar 
Math
A rope is 60 in. in length and must be cut into two pieces. If one piece must be five times as long as the other, find the length of each piece. Is one part of the rope 5in?
asked by Lauren 
CALCULUS
How do I determine whether the function is even, odd, or neither. How do I describe the symmetry? ex 1) f(t)= t&2 +2t 3
asked by SARA 
Biology
My mom has eye color hazel and my dad has the eye blue and my eye color is blue. Would my Genotype be homozgous? My mom hair has blonde and my dad has blonde hair and I have blonde hair would my genotype be heterozgyous?
asked by M 
probability
You and your friend just rented a car for an 8,000 mile crosscountry road trip. Your rental car may be one of three different types: new (N), nearly one year old (O), and old (L). If the car you receive is brand new, it will break down with probability
asked by matt 
math
Diane Van Os decided to buy a new car since her credit union was offering such low interest rates. She borrowed $32,000 at 3.5% on December 26, 2012, and paid it off February 21, 2014. How much did she pay in interest?(Assume ordinary interest.)
asked by Evelyn 
Physics
An object is placed 11.3 cm to the left of a diverging lens of focal length 6.51 cm. A converging lens of focal length 11.6 cm is placed a distance of d to the right of the diverging lens. Find the distance d that places the final image at infinity.
asked by Rachel 
ENN 103F
Describe two improvement that the people of ikror have enjoyed from the state assembly and mention two aspects that still need improvement
asked by lunkha 
Physics
A very narrow beam of white light is incident at 56.10° onto the top surface of a rectangular block of flint glass 12.7 cm thick. The indices of refraction of the glass for red and violet light are 1.640 and 1.663, respectively. Calculate the dispersion
asked by Rachel 
math
259.689 the 9 in the ones place _____ the value of 9 in the thousandths place
asked by terrell 
ap calculus
((1/2h)1)/h
asked by alex 
english
the author of my brothers keeper mainly develop jamies character through who
asked by ciara 
Physics
A rocketpowered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x and ycomponents of the puck’s velocity. The puck starts at the origin. The graph of the Xvelocity is v=8t cm/s and the
asked by Eric 
PhysicsVECTORS
Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?
asked by Eric 
Physics
The components of vector A⃗ are Ax = + 3.90 and Ay = 4.00. What is the angle measured counterclockwise from the +xaxis to vector A⃗ ?
asked by Eric 
Physics
Three forces are exerted on an object placed on a tilted floor. Forces are vectors. The three forces are directed as shown in the figure. If the forces have magnitudes F1 = 2.0 N, F2 = 17.0 N and F3 = 15.0 N, where N is the standard unit of force, what is
asked by Eric 
PhysicsTrajectory
A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's
asked by Eric 
microsoft power point
10. You're creating a table for one of your slides, and need to make some modifications to your table structure. Which of the following options can you perform by rightclicking inside the table? A. Merge cells B. Invoke Excel spreadsheet C. Create
asked by Lisa 
math
maggie has a 27 feet long ribbon what's the length of the ribbon in yards
asked by Janice 
physics
When a car moves up an incline, does the kinetic energy and potential energy decrease or increase?
asked by Sandy 
english
the author of my brothers keeper mainly develops jamies character through A. his actions b.dialogue and thoughts c.the narrators description d.others reaction to him
asked by ciara 
Physics
Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 3.61 m/s, while Jane takes off in a direction 63.3o north of east at 5.44 m/s. How long is it before they are 23.6 m
asked by Martina 
maths
find the value of 81 (1/ log base5 rash to 3 +27 log base 9 rash to 36 +3 ( 4/log base 9 rash to 9
asked by Riddhi 
Biology
My mom has eye color hazel and my dad has the eye blue and my eye color is blue. Would my Genotype be homozgous? My mom hair has blonde and my dad has blonde hair and I have blonde hair would my genotype be heterozgyous? Biology  woody, Friday, Se
asked by M 
science
what are hydrocarbons?
asked by Prashant 
Math
Write each number is scientific notation. 291.7 0.0960 is it 2.917 x 10^ 3 and 9.60 x 10^2? help!! thanks!!
asked by Susan 
music and movement
What type of music should be played if a student's speed needs to be increased
asked by elisha 
chem
If you have a properly adjusted hot flame, which is pale blue with three distinct cones, what is observed if the gas control valve is slightly closed? Explain.
asked by anna 
physics
A 4000 kg trailer is towed up a hill with a 5% grade. If the towing truck starts from rest at the bottom of the hill and reaches a speed of 12 m/s at the top of the hill, how much is the towing force. The road from the bottom to the top of the hill is
asked by james 
Algebra
If Angela runs up 5 steps of the escalator, then it takes her 40 seconds to reach the top of the escalator. If she runs up 14 steps of the escalator, then it takes her only 26 seconds to reach the top.
asked by Danny 
chemistry
Hi! Can you please check if my answers are correct? And, can you please tell me any other details you think are important to add. Also, the last two questions i have no clue how to answer. can you help? thanks so much! 3.A burning candle produces a
asked by anna 
Chemistry
If an aquarium tank holds 100 litres of water, calculate how much heat energy would be required to heat the tank from 18.2 Degrees(C) to 32 Degrees(C)
asked by Samuel