Friday

October 24, 2014

October 24, 2014

Total # Posts: 73,110

**Math**

When graphing,do I always have to number the scale with a1first?
*September 7, 2014*

**Chemistry- urgent!**

Perform the following operations and express the results in the correct number of significant digits or decimal places. Express all results in scientific notation. Please help me I'm so confused on how to do this!! 15. (1.71 x 10^6)(6.73 x 10^-8)/2.25 x 10 20. (533)(24) 21...
*September 7, 2014*

**Math**

What would be the new ordered pairs of reflecting the figure formed by (-1, 5), (-2, 2), (3, 2), and (2, 5)?
*September 7, 2014*

**Geometry help**

Points EC bisects points AD at C. For each of the following, find the value of 'x' and the measure of the indicated segment. Please correct me if I'm wrong! 1. AC= 3x+6 and CD=2x+14 x=_______ AC=______ Answer: x=8 AC= 30 2. AC= 5x-8 and CD=16-3x x=______ AD=_____ ...
*September 7, 2014*

**math**

what is a five digit number less than 25,000 if each digits' value is one less than the digit to its right and is divisible by two and four
*September 7, 2014*

**physics**

A person swims with a speed v realative to water What dose this mean?
*September 7, 2014*

**maths**

The rectangle box with square base is open at the top. The maximum volume of the box made from 1200 m2 tin,in m3 is:
*September 7, 2014*

**Organic chemistry**

Thanks, DrBob222
*September 7, 2014*

**Organic chemistry**

A 200.0g sample of glucose(180.16g/mol, Kmp=1.86 degrees celcius/m, mp=146 degrees celcius)is contaminated with 5.000g of table salt, sodium chloride(58.44g/mol, mp=801 degrees celcius). What would the expected melting point of the mixture be?
*September 7, 2014*

**environmental**

Explain why statues which are the sources of federal environmental laws can be several pages or several hundred pages.
*September 7, 2014*

**Algebra**

What would be the new ordered pairs of reflecting the figure formed by (-1, 5), (-2, 2), (3, 2), and (2, 5)?
*September 6, 2014*

**MATH HEL PLZ!!!!**

8 is 8/1. Turn that fraction around and you get 1/8, the reciprocal.
*September 6, 2014*

**prod and oper management**

12
*September 6, 2014*

**Chemistry**

determine the location of the non significant zeros by rewriting the number and placing a bar over the zeroes that are not significant. 1. 8040 2. 4.2 x 10^5 3. 4.70 x 10^-6
*September 6, 2014*

**english**

Thank you ma'am
*September 6, 2014*

**Chemistry**

Give the number of significan figures and decimal places in each of the following: 1. 80750 X 10^-2 2. 9.9000 X 10^8 3. 30.366 X 10^4 cm^3 4. 0.11692 X 10^-5
*September 6, 2014*

**physics**

A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 54° above the horizontal. The end of the ramp is 1.4 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point ...
*September 6, 2014*

**math**

A triangle having three equal sides is necessary and sufficient for a triangle having three equal angles
*September 6, 2014*

**Geometry**

Points EC bisects points AD at C. For each of the following, find the value of 'x' and the measure of the indicated segment. Please correct me if I'm wrong! 1. AC= 3x+6 and CD=2x+14 x=_______ AC=______ Answer: x=8 AC= 30 2. AC= 5x-8 and CD=16-3x x=______ AD=_____ ...
*September 6, 2014*

**Math**

*reflecting the figure formed by...
*September 6, 2014*

**Math**

What would be the new ordered pairs of reflecting the points (-1, 5), (-2, 2), (3, 2), and (2, 5)?
*September 6, 2014*

**Geometry**

Find the indicated values. Please correct me if I'm wrong! 1. B is between A and C. AB=2x+1, BC=3x-4, and AC=62. Find the value of 'x' and determine if B is a bisector. X=13 Is it a bisector? Yes 2. M is between L and N. LM=7x-1, MN=2x+4, and LN=12. Find the value ...
*September 6, 2014*

**Geometry**

W, R, and S are points on a number line, and W is the midpoint of point RS. For each pair of coordinates given, find the coordinate of the third point. Please correct me if I'm wrong! 1. R=4, S=-6 Answer: W=-1 2. W=-4, S=2 Answer: R=-10 *Could you please explain how you ...
*September 6, 2014*

**Physics II**

What is the sign and magnitude of a point charge that produces a potential of -2.00 V at a distance of 3.00 mm?
*September 6, 2014*

**English/Grammar help**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do.) please correct me if I'm wrong! 5. He removed the picture ...
*September 6, 2014*

**physics**

A flat circular plate of copper has a radius of 0.278 m and a mass of 42.6 kg. What is the thickness of the plate? answer in units of m
*September 6, 2014*

**English**

Is it wall?
*September 6, 2014*

**English**

The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do.) please correct me if I'm wrong! 1. Sam burnt the toast. ( ...
*September 6, 2014*

**Chemistry**

1.04 g/mL
*September 6, 2014*

**Physics**

1.A bus travels 400 m between two stops. It starts from rest and accelerates at 1.50 m/s^2 until it reaches a velocity of 9.00 m/s. The bus continues at this velocity and then decelerates at 2 m/s^2 until it comes to a halt. Find the total time required for the journey. 2.A 28...
*September 6, 2014*

**Physics**

Thanks!
*September 5, 2014*

**Physics**

A flight traffic controller is watching two planes. One is 20.0 km away in a direction 35.0º west of north at an altitude of 1650 m. The other is 18.0 km away in a direction 75.0º north of east at an altitude of 1420 m. How far apart are the two planes? Ax = 20.0km*...
*September 5, 2014*

**algebra**

Write the equation for the following relation. Include all of your work in your final answer. Submit your solution. P = {(x, y): (1, 0), (2, 4), (3, 8), (4, 12),
*September 5, 2014*

**English**

There is this one too: My name is John Andersen and I want to tell you about myself and my family. My name is John Andersen, and I want to tell you about myself and my family.
*September 5, 2014*

**English**

Which is correct? That is the resume, and I want to learn more about her in the future. That is the resume and I want to learn more about her in the future.
*September 5, 2014*

**math**

6.4 x 10^11 + 2.85 x 10^11 ( finding the sum written in scientific notation?) - 9.25 x 10^11 (my answer) - 9.25 x 10^22 - 92.5 x 10^-10 - 92.5 x 10^12 3 x 10^20/ 4 x 10^5 (write in scientific notation) - 7.5 x 10^3 - 0.75 x 10^4 (my answer) - 7.5 x 10^14 - 7.5 x 10^15 (6.2 x ...
*September 5, 2014*

**English**

In the play A Sad Vaudeville, The flagman tells the man it is not his job to ____ answer questions. give directions. issue tickets. give advice. (my answer)
*September 5, 2014*

**Physics(Need Help please)**

Four equal charged +Q are placed at the corners of a square of side a. Find the electric field strength at the midpoint of one side. Express your answer in terms of Q, a, and the constant k
*September 5, 2014*

**Math**

If the chance for each of the next two days that it will snow is 2/5. What is the chance that it will not snow on any of these days?
*September 5, 2014*

**math 101**

find the distance across the corners of square nut is 7.9mm on a side
*September 5, 2014*

**English**

He was placed higher than his colleague at the company.
*September 5, 2014*

**English**

If a person is placed higher than someone else, then is "higher" an adjective or adverb?
*September 5, 2014*

**Math **

can you explain the reason major league baseball chooses to round to the nearst thousandth rather than nearst hundredth or tenth ? which gives the most accurate results? why?
*September 4, 2014*

**Math PLease help**

can you explain the reason major league baseball chooses to round to the nearst thousandth rather than nearst hundredth or tenth ? which gives the most accurate results? why?
*September 4, 2014*

**History**

What lasting impact did the 1569 Mercator World Map have on people's image of the world?
*September 4, 2014*

**math**

2Sin50 cos60
*September 4, 2014*

**Math-please help!!**

Half the students in Max's class volunteer at the local community center. 15 students do not volunteer.if there are 12 boys in Max's class , how many girls are in Max's class? I am having a brain freeze!
*September 4, 2014*

**Novel**

1. The term racial unconscious means that A. nature weeds out the weakest and unfit. B. you must learn the law of club and fang to survive. C. each species and culture shares ancient memories, stored in the unconscious part of the mind. D. we're all racists at heart to ...
*September 4, 2014*

**Math**

Here is the instruction: Use the data from the table to calculate the number of hours of daylight for one day per week throughout the year (52 data points). Be sure to use the same day of the week so that your data points are evenly spaced 7 days apart. Does this mean... Jan. ...
*September 4, 2014*

**LA**

Thanks! There's another one too: It informs our perceptions, both true and false — one need look no further than the greatest tool of white supremacy in world history, the 1569 Mercator world map. Yes, a map. Gerardus Mercator’s wildly popular map was created ...
*September 4, 2014*

**LA**

Identify the main ideas of the paragraphs. My answers are in parentheses. It informs our history — New York City isn’t where it is because of dumb luck. Verrazzano and Hudson both stumbled into the greatest natural harbor on the Atlantic coast. Boston started as a ...
*September 4, 2014*

**physical science **

if an object has a mass of 10 g and a volume of 5 ml what is its density
*September 4, 2014*

**Geometry**

What are the precise measurements of angles 56 and 75?
*September 4, 2014*

**chemistry**

a mixture of gases is prepared for laboratory experiments by combining 4.2 L of oxygen, 0.71 L of nitrogen, and 0.22 L of carbon dioxide. Determine the percentage of nitrogen in the mixture.
*September 4, 2014*

**math**

Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?
*September 4, 2014*

**algebra**

Amy is building a house. The basement floor is at 15 feet. The roof of the house is above the ground 25 feet. Express the comparison of height as a inequality. Explain the meaning of the inequality.
*September 4, 2014*

**math**

Write as fraction or mixed number 1.004
*September 4, 2014*

**Math**

solve the variable e+17-91
*September 4, 2014*

**Science**

What characteristics are common in main sequence stars
*September 4, 2014*

**Science**

In what part of their life cycle are white dwarfs; beginning middle or end or some combination of those stages
*September 4, 2014*

**Math**

Would this be a good definition Natural Numbers are positive whole numbers that are greater than 0 Whole numbers are positive numbers including 0
*September 4, 2014*

**Math**

Difference between Whole and Natural numbers
*September 4, 2014*

**chem**

what is the density of a block of unknown material with a mass of 11.56g if the dimension are length = 2.2cm, height =1.7cm, width =6.1cm
*September 4, 2014*

**Math**

The measures of two supplementary angles are (10X-25) and (15X+50). Find the measure of the angles
*September 4, 2014*

**math**

Peter & Diane have the same average in mathematics. On the next test Diane scored 97% and her aver age improved to 90%, but Peter scored 73% and his average decreased to 87%. How many tests had proceeded this last test?
*September 4, 2014*

**statistics**

The mean height of students in a college is 155 cms and standard deviation is 15. What is the probability that the mean height of 36 students is less than 157 cms
*September 4, 2014*

**anatomy and physiology**

the lesion is located in the right thorax just lateral to the mid-saggittal plane?
*September 4, 2014*

**English**

Lighthouses are towers with extremely strong lights
*September 4, 2014*

**arithmetic**

find the square root 83456
*September 4, 2014*

**Statistics**

A sample of 12 measurements has a mean of 37 and a standard deviation of 4.25. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 37 each. A. Find the mean of the sample of 14 measurements. Mean = 37 How I ...
*September 4, 2014*

**Computer Science **

Define an unambiguous context free grammar that generates the language of strings containing a series of a's followed by a series of b's followed by a series of c's concluding with a series of d's. The number of a's must be exactly the sames as the number ...
*September 4, 2014*

**Computer Science **

Write a regular expression defining strings that begin with an a and end with a b and can contain any number (including zero) of c's or d's in the middle. Every c that is in the string must be followed by at least one d. Construct a deterministic finite state automaton...
*September 4, 2014*

**Computer Science **

Define a language that is not a regular language using a context-free grammar that is not ambiguous. The alphabet of the language must contain at least five characters. Describe in English the strings of the language. Choose any string that is in the language and demonstrate ...
*September 4, 2014*

**English**

Then is it the first sentence?
*September 4, 2014*

**English**

Identify the main idea of the paragraph. My choices are in parentheses. Our pitiful knowledge of geography has been well documented for the last decade. Among the most notable studies was the 2006 Roper study sponsored by the National Geographic Society, a copy of which is ...
*September 4, 2014*

**math**

a ball is dropped from a height of 3 meters. It bounces to 2/3 of the height from which it fell at each boune.find distance travelled
*September 4, 2014*

**Government and Trade**

If the Gross National Product (GNP) goes up, this means
*September 4, 2014*

**physics**

A stone is launched straight up by a slingshot. Its initial speed is 20.6 m/s and the stone is 1.59 m above the ground when launched. How high above the ground does the stone rise? How much time elapses before the stone hits the ground?
*September 4, 2014*

**Math**

Rewrite the following definition as a biconditional: Points that lie on the same line are collinear. A.) If a point lies on a line, then it is collinear. B.) If a point lies on a line with another point, then the two points are collinear. C.) If two points are collinear, then ...
*September 4, 2014*

**Math**

1.) What is the conclusion of the following conditional? A number is divisible by 3 if the sum of the digits of the number is divisible by 3. A.) The number is odd. B.)The sum of the digits of the number is divisible by 3 C.) If the sum of the digits of a number is divisible ...
*September 4, 2014*

**PRINCIPLES OF PUBLIC SPEAKING PART II, SECTION 2**

5.0 Points What nonverbal communication technique usually communicates best your honesty about your message? A. Good posture B. Body movement C. Eye contact D. Hand gestures
*September 4, 2014*

**algebra**

2x - 3y = 6
*September 4, 2014*

**statistics**

A state administered standardized reading exam is given to eighth grade students. The scores on this exam for all students statewide have a normal distribution with a mean of 506 and a standard deviation of 69. A local Junior High principal has decided to give an award to any ...
*September 4, 2014*

**statistics**

The final mark in QTQ100T has a normal distribution with an average of 60% and a variance of 100. If we draw a sample of 4 students, the probability that the average mark is more than 56% is
*September 4, 2014*

**Math!**

The initial amount of sugar in fermenting a batch of beer is 5.5 grams. Over time the sugar decreases at a rate of 0.1grams per day. a.What is the amount of sugar that remains after 7 days? 23 days? - I got: 5.5-0.1x= A - 5.5-0.1(7)= 4.8 - 5.5-0.1(23)= 3.2 b. If A represents ...
*September 4, 2014*

**physics**

An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 3.12 m/s2. The magnitude of the car's velocity at the end of ...
*September 3, 2014*

**pre calculus algebra **

one number is three less than six times second number. their sum is 32. find the two numbers
*September 3, 2014*

**8th grade math**

a square photo display board is made up of 60 rows of 60 photos each. the area of each square is 4 in. how long is each side of the display board?
*September 3, 2014*

**math**

a gallon of stain can cover a square deck with an area of 300 square feet. about how long is each side of the deck? round to nearest foot.
*September 3, 2014*

**chemistry**

'A patient receives 2900mL of an IV solution containing 3g of glucose per 100 mL. How much energy, in kilocalories, does the patient obtain from glucose?
*September 3, 2014*

**algebra**

Ms.Sue, can you answer the previous question that was asked before this question. PLEASE
*September 3, 2014*

**SOMEONE HELP PLEASE..DUE AT MIDNIGHT **

Hot dogs and Hamburgers: 1.) The caterer for your class picnic charges $1 for each hotdog and $2 for each hamburger. You have $48 to spend. Write a model that shows the different numbers of hot dogs and hamburgers that you could purchase... 2.) Airplane landing: An Airplane&#...
*September 3, 2014*

**Math. HELP!**

Thanks DrBob222 :D
*September 3, 2014*

**Math. HELP!**

Hot dogs and Hamburgers: The caterer for your class picnic charges $1 for each hotdog and $2 for each hamburger. You have $48 to spend. Write a model that shows the different numbers of hot dogs and hamburgers that you could purchase.
*September 3, 2014*

**Chemistry**

youre missing the dimensions of the container
*September 3, 2014*

**math**

if a bag has 2 red balls 2 blue balls 2 green balls what is your chance of getting a red ball
*September 3, 2014*

**english**

Ms. Marcus told our class about Valentines Day.
*September 3, 2014*

**math**

Jasmine has 8 packs of candle wax to make scented candles .each pack contains 14 ounces of of wax.jasmine uses 7ounce of wax to make one candle .how many candles can she make?
*September 3, 2014*

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