Monday
July 6, 2015

Posts by julia


Total # Posts: 529

Geometry
Anybody?
June 22, 2015

Geometry
A carpenter checks to see if a board is warped by laying a straightedge across the board in several directions. State the postulate that is related to this procedure.
June 22, 2015

Language Arts
Does anyone have the correct answers for #1-6 and #8-18
May 16, 2015

math
2.If a sledgehammer that weighs 18 newtons on Earth will weigh about 4 newtons on the planet Namar, then your weight on Namar would be about ___ times your weight on Earth. A. 0.25 B. 4 C. 0.5 D. Not enough information
May 14, 2015

math
thxs
May 13, 2015

math
never mind
May 13, 2015

math
is it $3.75 because the unit rate is $2.50/1 and to get 10 you multiply the denominator, 1, by 15 and what u do to the bottom you do to the other so $2.50*15=37.5 and it equals 37.5/10 which is 3.75
May 13, 2015

math
At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf of bread cost $2.50. 1.A ratio is a comparison of two amounts by division. What is the ratio of the cost of a loaf of bread in 2013 to the cost in 1980? *$2.50/1 2.Assuming the price of clothing increased...
May 13, 2015

math
maya made a sign with an area of 48 square centimeters What could her sign look like
May 5, 2015

chem
For the reaction: N2+3H2<--->2NH3 4.000 mol N2, 2.000 mol H2, and 6.000 mol NH3 are placed in a 2.000 L container and allowed to reach equilibrium. When equilibrium is established the [H2]=2.77 M. Calculate the equilibrium concentrations of nitrogen and ammonia. ...
April 19, 2015

chem
For the reaction: N2+3H2 <-----> 2NH3 1.000 mol N2 and 1.000 mol H2 are placed in a 1.000 L container and allowed to establish equilibrium. When equilibrium is established the [N2] =0.921M. Calculate the equilibrium concentrations of hydrogen and ammonia. Calculate K.
April 19, 2015

chem
For the reaction: A+B <-----> 2C (all gases) 2.0 mol A, 2.8 mol B and 1.0 mol C are placed in a 2.0 L container and allowed to reach equilibrium. When equilibrium is established [C]=0.75 M. Calculate all equilibrium concentrations. Calculate K. I am so confused!
April 19, 2015

math
June has twice as much money invested at 5% simple annual interest as she does at 4 %. If her year income from the two investment is $315 how much does she have at each rate?
March 20, 2015

English
11- Before Derrell made a serious purchase, such as a car, he would study the competition?
March 16, 2015

English
10- Before finishing the meeting, the chair of the group offered many ideas?
March 16, 2015

English
8- We should consider traveling to China this summer?
March 16, 2015

English
@Ms Sue
March 16, 2015

English
could 6 be The faculty had made recommendations for the honor society?
March 16, 2015

English
I know the answers to 3, 5, 7, and 9
March 16, 2015

English
Identify awkward or pretentious diction in the following sentences, and revise each sentence as necessary to improve clarity. 2. Let’s have a discussion of the essay you read for homework. 3. Khaya finally came to the realization that she preferred research to teaching. 4...
March 16, 2015

science
A charge of +9.0 nC and a charge of +4.0 nC are separated by 50.0 cm. Find the equilibrium position for a −1.0 nC charge as a distance from the first charge. The Coulomb charge is 8.98755 × 109 N · m2 /C 2 . Answer in units of cm.
March 13, 2015

Chemistry
I need to use those numbers to find the final concentrations for each individual solution.
February 24, 2015

Chemistry
I have to use the given concentration of 7.03 micromoles/liters to determine the concentration for the following dilutions. 1. mL stock solution-2 mL distilled water-8 2. mL stock solution-4 mL distilled water-6 3. mL stock solution-6 mL distilled water-4
February 24, 2015

English
@ms sue, how about "How did the pilot know where in the air he was?"
February 18, 2015

English
Identify the simple sentences in the following paragraph. I know the first and third sentences are simple. The air show announcer hushed. He had been squawking all day, and now he quit. The crowd stilled. Even the children watched dumbstruck as the slow, black biplane buzzed ...
February 18, 2015

geometry
i need help on a question that involves finding the "value of the variable" ive started the question but im stuck of how to continue .its a right triangle which hypotenus length is cut by a altitude line "w+9" .the lengths cut are 8 and 18 .
February 11, 2015

Science
California's volcanoes formed as a result of colliding boundaries.
February 6, 2015

Chemistry
the titration of an ascorbic acid requires 18.5 mL of .0105 M KIO3. how many mmol of ascorbic acid were in this sample?
February 4, 2015

English 10 help please
metaphoe
November 18, 2014

Trig
the angle of elevation to the sun is 65 degrees. A building casts a shadow 16m long. What is the height of the building to the nearest meter?
November 17, 2014

Algebra
You invest an initial $4,500 in an account that has an annual interest rate of 4.5%, compounded daily. How much money will you have in the account after 10 years? Round your answer to the nearest whole number.
November 12, 2014

calculus
Use l'hopital's Rule to evaluate lim x in 0 of (4x(cos 6x-1 )) / sin 3x-3x
November 8, 2014

math
Richard put a counter on 6. He counted by tens. what are the next 3 numbers he counted? My answer is: 16, 26, 36
November 3, 2014

calculus
never mind i got it thanks
November 3, 2014

calculus
A spotlight on the ground is shining on a wall 24m away. If a woman 2m tall walks from the spotlight toward the building at a speed of 1.2m/s, how fast is the length of her shadow on the building decreasing when she is 4m from the building?
November 3, 2014

Algebra
Find the dimensions of the rectangle of the largest area that can be enclosed by 200 meters of fencing
October 27, 2014

calculus
The volume of a cube is increased from 729 cubic centimetres to 849.285 cubic centimetres. Use differentials to determine: a) by approximately how many centimetres the side length of the cube increases ? B) by approximately how many square centimetres does the surface area of ...
October 12, 2014

Calculus
The volume of a cube is increased from 729 cubic centimetres to 849.285 cubic centimetres Use differentials to determine : (a) by approximately how many centimetres does the side length of the cube increase? (b)by approximately how many centimetres does the surface area of the...
October 11, 2014

Logic
mushroom & purple => poisonous mushroom & poisonous => purple mushroom & ~purple => ~poisonous mushroom & purple => ~poisonous
October 6, 2014

physics
An electron travels 2.7 m in 6.37 × 10−8 s. How fast is it traveling?
September 30, 2014

CHEM
In the preparation of a rock salt solution, 1.522 grams of impure rock salt was dissolved in 50.0 ml of distilled water. The total mass of the solution was found to be 51.522 grams. Calculate the weight percent of impure rock salt in the prepared solution.
September 26, 2014

math
I have a 15ft board I need to cut into 2 1/8 inch pieces how many can I cut
September 17, 2014

Maths
How would you convert 11 minutes into hours?
September 14, 2014

Grade 10 Maths
An area for planting crops is given by: A = 800 + 20x - 1/2x^2 Find the value of x which the area is a maximum
September 11, 2014

physics
bob pursley, can you answer my question. SCIENCE BIOLOGY. My name is Julia. THanks. I have till 12 am. HELPPPP
September 3, 2014

SCIENCE:BIOLOGY>
bELIEVE ME OR NOT BUT i'M PRETTY SURE I HAVE MINE RIGHT.THX FOR YOUR HELP ..NOT! tHANKS DR.bOB222
September 3, 2014

SCIENCE:BIOLOGY>
1. How many seconds do you spend in school during the week (6.5 hours/day)? 2. How many micrograms are in 12 dekagrams? 3. How many centimeters are in 5 kilometers? 4. 3.25 liters are equal to how many kiloliters? 5. how man meters are in 0.65 hectometers? 6. How many grams ...
September 3, 2014

chemistry
Dr.Bob can you answer my questions. My name is Julia.. my topic is in Science:Biology
September 3, 2014

History/ English
please help!
September 3, 2014

History/ English
What does the novel 1984 by George Orwell teach us about history? In what ways is Winston a historian?
September 3, 2014

math
Determine whether the system of equation is in row-echelon form. x-y+3z=-11 y+8z=-12 z=-2
June 17, 2014

Math
A hair product company sells three types of hair products for $30, $20, and $10 per unit. In one year, the total revenue for the three products was $800,000, which corresponded to the sale of 40,000 units. The company sold half as many units of the $30 product as units of the...
June 17, 2014

Chem
Oops 0.10 mol NaOH
May 27, 2014

Chem
When 1.10 mol of NaOH is added to 1.00 L of 0.30 M HCl the pH of the resulting mixture is: a) 0.52 b) 0.70 c) 1.00 d) 13.30
May 27, 2014

Scientific Method
B is the correct answer
May 25, 2014

English
Choose the answer that identifies the function of the gerund in the sentence. Yes, this player has worked hard on improving his strength this season.
May 24, 2014

Chemistry
Thanks :)
May 17, 2014

Chemistry
Explain why methyl red would be a good indicator for a titration of 0.25M NaOH with .025M HNO3, but a poor choice for use in a titration of 0.25M NaOH with 0.25M HCN. I'm pretty sure the first step is to find the pH of the two titrations (and then compare those to the pH ...
May 17, 2014

math
I'd convert it to minutes. 14x60=840 (plus the 3 minutes)=843minutes Divide 843 by 3 = 281minutes Then convert back to hours and minutes... 281 divided by 60 = 4hr (leave out the decimals since they represent the left over minutes) 4x60=240 (this is the time already ...
May 17, 2014

Math
175g AgCl x (1 mol/247.9g) x (1 Ag2S/2AgCl) x (143.4g/1 mol) = 50.615g Ag2S I'm assuming you've learned about basic stoichiometry and how to use mole bridges? Otherwise this type of question wouldn't be asked.
May 17, 2014

math
Terry wants to buy one pair of moccasins. She can choose from some that costs $22.50, $27.00, $20.95, and $24.75. How much will Terry save if she buys the least expensive instead of the most expensive pair?
April 29, 2014

MATH
Thank you.
March 26, 2014

MATH
14% of what number is 84?
March 26, 2014

CHEM
Can you show me the formula I need to do this problem. please a solution is made by dissolving 0.35 mole of LiI in enough water to give a final volume of 2.60 ml. What is the molarity of the solution? thank you
March 25, 2014

CHEM
can you show me the formula for this problem. calculate the grams of NaOH present in 9.0 ml of a 8.0 (m/v) NaOH solution. thank you
March 25, 2014

chemistry
Calculate the concentration in % (m/m) of a solution containing 20.5 g of LiF dissolved in 340.0 g of H2O. a.1.14% (m/m) b.5.69% (m/m) c.6.03% (m/m) d.6.42% (m/m)
March 23, 2014

chemistry
In which of the following pairs of ionic compounds are both members of the pair soluble in water? a.AgNO3 and AgCl b.LiOH and Li2SO4 c.PbSO4 and BaCO3 d.NH4I and Sn3(PO4)2
March 23, 2014

Math
Write in order from least to greatest. +3,-1,-4,+2,0
March 18, 2014

Physics
Block A in the figure weighs 48.0N . The coefficient of static friction between the block and the surface on which it rests is 0.250. The weight w is 6.00N and the system remains at rest. -Find the friction force exerted on block A. -Find the maximum weight w for which the ...
March 8, 2014

physics
A driver drives 2.5 hours at an average speed of 48MPH. What distance does she travel in this time?
February 10, 2014

physics
A driver drives 2.5 hours at an average speed of 48MPH. What distance does she travel in this time?
February 10, 2014

math
If x varies inversely withy 3, and x=6 when y=3, find x when y=2.
February 4, 2014

math
A robotic basketball player tosses a ball upward from a height of 7 feet, at an initial speed of 111 feet per second. The height of the ball is modeled by the equation: h=−16t2+111t+7, where h is the height above the ground in feet and t is the time measured in seconds. ...
February 4, 2014

math
You are putting a brick walkway along two sides of a rectangular garden that measures 6 meters by 15 meters. The path will run the length of the garden, turn the corner, and run along the width. You only have enough brick to cover 46 square meters. How wide should the border be?
February 4, 2014

Math
Mushrooms produce a tremendous number of spores. However, very few spores go on to establish a new mushroom colony. A "colony" is actually a little bunch of fuzzy-looking cells called a mycelium. Let's say a particular mushroom produces a billion spores in a day...
January 1, 2014

Math
Uncle Joe made chocolate chip cookies. Eric ate fifty percent of them right away. Ryan ate fifty percent of what was left. Ten cookies remain. How many cookies did Uncle Joe make?
January 1, 2014

Math
There are three hundred students at Mackenzie Middle School in Brain City. If 57% of the students are female, what is the ratio of female students to male students? Answer in lowest terms
January 1, 2014

Math
The local election is over and a new mayor has been elected to lead Big Town. The new mayor received three votes for every vote received by her opponent. The new mayor received 2,541 votes. How many votes did her opponent receive?
January 1, 2014

Physics
A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Ini- tially a car is 60 m behind the train, traveling in the same direction as the train at 41 m/s and accelerating at 5 m/s2. What is the speed of the car just as it passes the train? Answer...
October 16, 2013

Physics
r << 1.3e-4
October 15, 2013

physics
KE = (1/2)(m)(v)^2 = (0.5)(4)(5)^2 = 50 J Constant friction force encountered: N = (0.94)(4)(10) = 37.6 N Energy absorbed by friction: Fd = 37.6x Energy absorbed by the spring: =(1/2)(17)(x)^2 =8.5x^2 Final Equation: 50 = 8.5x^2+37.6x 0 = 8.5x^2+37.6x-50 Solve the quadratic ...
October 15, 2013

physics
r^3 << (3*(C_1)^2)/(4*pi*C_2*oil density*g) r^3 << (3)*(2.30e-4)^2 / (4)(3.14)(0.88)(660)(10) r << 1.3e-4
October 15, 2013

Algebra 1
One long-distance telephone company offers a plan such that the first 20 minutes costs $.99 and each additional minute costs $.09. Solve an inequality to find the maximum amount of full minutes you can talk for $5.00. At first I got: 5 is greater than or equal to .99+(1.8-.09m...
October 14, 2013

physics
Hello Can you explain the first equation? distance=V(t-10)+V/2 * 10 Where is this distance coming from for me to be able to solve for V? Also where is the 10 coming from in V(t-10) and V/2*10? My final equation solving for V is : V= 10d / 4(t-10)
October 5, 2013

US History
What political influences shaped the governments of the British Colonies
October 1, 2013

Geometry proving quadrilaterals
Proving quadrilaterals PLEASE PLEASE PLEASE HELP *the diagonals of a square bisect the vertex angle * the diagonal of a rhombus are perpendicular *each diagonal of a rhombus bisects the opposite angles of the rhombus help me prove please how ? tell me
September 30, 2013

Math 6th Grade Level
A baker bought 680,000 oz. of flour and packed the flour into 200 bags of equal size. He used some flour and had 100 bags left. He decided to repack the remaining flour bags into bags of 5,000 oz. bags. How many bags of flour did he have in the end?
June 19, 2013

Math
Mei packed 783 strawberries equally into 9 cartons. After giving 4 cartons to her neighbors, she decided to repack 5 strawberries into each carton. How many cartons of strawberries did she have in the end?
June 19, 2013

Math
A homeowner empties her hot water heater every 36 days and changes the filter in the heat pump every 48 days. She did both on Friday September 17, 2012. When again will she do both on the same day? (give the day of the week, the date, month, and year)
June 17, 2013

physics
The Easy Bake Oven is a common toy for young children who want to emulate the process of cooking. Suppose this oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and...
May 30, 2013

organic chemistry
for each of the following compounds, draw the form in which it will predominate at ph=3, ph=6, ph=10, and ph=14. a)CH3COOH b)CH3CH2NH3 c) CF3CH2OH please explain how to get answers. my book does not give clear examples.
May 30, 2013

BIOLOGY!!!!!!
What is the reletive amounts of mRNA that will e transcribed if there is no promoter and enhancer?
May 22, 2013

French
Help me conjugate this in French? Need help Atterrir, tu Fleurir, les plantes Fondre, les garcons Perir, les fleurs Penser, tu Manger, vous Verifier, les professeurs Marcher, le chat noir
May 16, 2013

chemistry
i need help also
May 15, 2013

math
I need 2 three digit numbers that total 16848
April 22, 2013

finance
Mrs. Kay who is 24 years old plans to retire at the age of 60. Mrs. Kay would like to be able to withdraw $120,000 per year from her retirement account for 40 years after retirement beginning a year after her retirement. She already has $15,000 in her retirement investment ...
April 17, 2013

chemistry
What is the specific heat of an unknown substance if a 2.31 g sample releases 12.5 cal as its temperature changes from 24.9°C to 20.7°C? Please explain ans show steps.
April 16, 2013

math
a storage crate has the dimensions : 12ft * 6ft *5ft. how many cube-shaped boxes measuring 8 inches in length could be stacked completely within the cube??
April 10, 2013

Chemistry
Enough of a monoprotic acid is dissolved in water to produce a 1.47 M solution. The pH of the resulting solution is 2.64. Calculate the Ka for the acid.
April 10, 2013

adv functions
Hi! I need help with determining the value of each of the following logarithmic expressions. Do not change the bases- thx a) log[base8]4 b)log[base(1/3)]27
April 7, 2013

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