Monday

December 22, 2014

December 22, 2014

Total # Posts: 447

**chemistry**

write the mass number, atomic number,number of protons, neutrons,and electrons for He, Si, K+, N3-
*December 16, 2014*

**chemistry**

an ice cube has a mass of 4.3g and a mass of 5.0mL it is placed in a 30mL of oil that has a mass of 27 g will the ice cube float or sink in the oil
*December 16, 2014*

**Chemistry**

Complete the Bronsted- Lowry reaction, placing each product by its appropriate label. HCO3^-+HNO2 (double arrows) need a spot for acid and for base.
*December 5, 2014*

**algebra**

It grew 7.66 inches repeating every week.
*November 17, 2014*

**math**

20+10+9+7=46 There are 20 students in 9th Grade. 20/46=0.43478261 The percentage of students in the ninth grade riding the bus are 43%.
*October 6, 2014*

**maths**

by how much does the 3 in 34685 exceed the 3 in 23487
*September 17, 2014*

**Math Help!**

Those are the answers in my book. & Sorry! How about now? 1. C 2. A 3. D
*May 21, 2014*

**Math Help!**

1. D 2. B 3. C
*May 21, 2014*

**Math Help! **

1. Find the product. (2x)(10x) 20x 12x 20x^2 5x 2. -3m(m + 8) -3m^2 + 24 -3m^2 + 24m -24m^2 -4m + 5 3. 4d(2d - 9) 8d - 36d -d -28d^2 8d^2 - 36d
*May 21, 2014*

**Math 2**

So is the answer 1/12yard, if she has 1/4 yard of fabric, and cuts it into 3 equal pieces?
*May 15, 2014*

**Math 2**

Is the answer 1/12. 1/4 multiplied by 1/3 is how I got that. Is that correct?
*May 15, 2014*

**Math 2**

Ammeter has 1/4 of fabric. She cuts it into 3 equal pieces. What fraction of a yard is each piece of fabric?
*May 15, 2014*

**Math 2**

John solved 1/5 divided by 10 by using a related multiplication expression. Which multiplication expression did she solve? Choices are A. 5 *10 B. 1/5 *10. C. 5* 1/10 d. 1/5 *1/10
*May 14, 2014*

**Statistics**

A simple random sample of 27 adult mice has a length standard deviation of 0.66 mm. Using a 0.10 level of significance, does it appear that these mice come from a population with a length standard deviation of 0.87 mm?
*April 27, 2014*

**Statistics**

A simple random sample of 27 adult mice has a length standard deviation of 0.66 mm. Using a 0.10 level of significance, does it appear that these mice come from a population with a length standard deviation of 0.87 mm?
*April 27, 2014*

**Statistics**

18.3
*April 27, 2014*

**Statistics**

18.3% smoke
*April 27, 2014*

**Statistics**

What part? That's exactly how it's written on the homework
*April 27, 2014*

**Statistics**

One survey by the American Medical Association showed that among 785 randomly selected people who completed four years of college, 81.7% do not smoke. Use a 0.01 significance level to test the claim that people who completed four years of college are more likely to not smoke ...
*April 27, 2014*

**math**

How do you find the sum of the mode from each set of data? Set A: ( 4,9,7,2,4 ) Set B: ( 11,6,4,6,2 ) Set C: ( -3,2,9,-3,-3)
*April 23, 2014*

**Chemistry**

What mass of octane must be burned in order to liberate 5410 kJ of heat?
*April 13, 2014*

**Math Help? Check my answers.**

1. A spinner is divided into 10 equal sections numbered from 0 to 10. You spin the spinner once. What is P(divisible by 3)? 1/3 1/2 2/5 3/10** 2. A bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. You choose a marble, ...
*April 9, 2014*

**Physics**

The figure(Figure 1) shows a solid metal sphere at the center of a hollow metal sphere. Assume that E=1.2×104N/C. What is the total charge on the exterior of the inner sphere?
*March 11, 2014*

**Physics**

An electric dipole is formed from two charges, ±q, spaced 1.00cm apart. The dipole is at the origin, oriented along the y-axis. The electric field strength at the point (x,y)=(0cm,10cm) is 320N/C . What is the charge q? Give your answer in nC. What is the electric field...
*February 21, 2014*

**math**

A rectangular fish pond is 21ft(squared) in area. If the owner can surround the pond with a 20 foot fence, what are the dimensions of the pond?
*February 19, 2014*

**AP Chemistry**

A solution is made by mixing exactly 500 mL of 0.167 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentrations of H+, CH3COOH, CH3COO-, OH-, and Na+.
*February 16, 2014*

**physics**

a wooding block of mass 7.6kg rest on a rough horizontal surface if the surface is 8N calculate the coefficient of friction
*November 17, 2013*

**Chemistry**

What is the theoretical yield of ethyl chloride in the reaction of 19.2g g of ethylene with 48g g of hydrogen chloride?
*November 3, 2013*

**Water - Math Question**

aw, guys someone help me please??
*October 19, 2013*

**Water - Math Question**

This question is related to water footprint calculation. I have no idea how to go about this, if anyone could point me in the right direction, I'd be forever grateful! Background info: The water footprint of the resident of a Blue Sea riparian country (92 million residents...
*October 19, 2013*

**algebra 2**

Teaneck High had an enrollment of 11050 in 1990 and an enrollment of 13390 in year 1998. What is the predicted enrollment of Teaneck High in 2018 if we assume a linear model?
*August 24, 2013*

**math**

Biologists have noticed that the chirping of crickets of a certain species is related to temperature, and the relationship appears to be very nearly linear. A cricket produces 119 chirps per minute at 67 degrees Fahrenheit and 172 chirps per minute at 88 degrees Fahrenheit. ...
*August 24, 2013*

**U.S. Government**

How is the American Government Organized and their functions? - I have to write a 5 paragraph essay and I need help researching. - Do you know a website I can get information? P.S ; I do not have a book. I'm taking an online class and I have to start/finish it by tomorrow...
*July 23, 2013*

**Government**

i don't have a text to study. its an online class.
*July 9, 2013*

**Government**

1. The U.S. Constitution's Article I, Section 1 created the office for the U.S. president. A) True B) False 2. The term of office for a House member is two years. A) True B) False 3. Two requirements for members of the House are that they must be 25 years of age and a ...
*July 9, 2013*

**statistics**

If I know that a set of test scores has a mean of 75 and a standard deviation of 8 what can I conclude?
*July 5, 2013*

**Government (Check Answers)**

I need help with #7 ; #8 ; #9 .
*June 27, 2013*

**Government (Check Answers)**

Ms. Sue , will you check my answers? 11. B? 24. G ; F ; H ; A ; D ; E ; B ; C ?
*June 27, 2013*

**Government (Check Answers)**

1. What is the procedure of voter identification intended to help prevent fraudulent voting and keep the process organized? A) political socialization B) registration C) gerrymandering D) precinct divisions E) franchising 2. What do you call all the persons entitled to vote in...
*June 27, 2013*

**U.S. Government**

11. socialization 12. injunction & i question #8... because property owners doesn't fit in the blanks... Ms. Sue ; Could you help me with my Economics Questions? Please?
*June 27, 2013*

**U.S. Government**

1. Amendment -- gave all men the right to vote regardless of race. - 15? 2. People who believe voting is important have high political ----c-c-. - efficacy? 3. It is an essential part of democracy in action, for the people to ---e. - vote? 4. The age requirement to vote in the...
*June 27, 2013*

**Economics**

Because they dont do the work for you, they check to see if your answers are right. & tell you if they're not!
*June 27, 2013*

**government**

Will you tell me which 3? & Do you check Economics work too? I have posted stuff on here that I do need help on & I don't think nobody had checked it.
*June 27, 2013*

**government**

1. The Framers of the US Constitution supported political parties. A) True B) False 2. The US is predominantly a multiparty system. A) True B) False 3. The main focus of major parties is to nominate candidates and get them elected. A) True B) False 4. The purpose of the ...
*June 27, 2013*

**Economics**

The Law of Supply (movement along the curve due to the price effect) occurs because A) producers usually offer more for sale at lower prices than at higher prices. B) marginal production costs usually fall at higher rates of production. C) people can buy only so much of a ...
*June 26, 2013*

**Government**

Would you mind to help me with my Economics homework?
*June 26, 2013*

**Government**

Thank you for the help. :)
*June 26, 2013*

**Government**

1. C 2. A 3. A 4. A 5. B 6. trade agreements 7. enumerated 8. ? 9. E 10. B 11. A 12. ? 13. A
*June 26, 2013*

**Government**

1. States must honor each other's laws and court decisions according to... (C) A) 1st Amendment B) Privileges and Immunities Clause C) Full Faith and Credit Clause D) Revenue Sharing 2. The National Government can enter a State to restore order in cases of domestic unrest...
*June 26, 2013*

**government**

Will you help me with my other post, I added the answers that i thought they were . They are in () or Under the question... Please?
*June 26, 2013*

**government**

Is it FALSE?
*June 26, 2013*

**government**

I don't have a book. I'm taking an online class. That's why I asked. I do research before i ask the question.
*June 26, 2013*

**government**

The National Government can form a new State out of an existing State without the permission of the existing state? True or False
*June 26, 2013*

**Government**

I re-posted the questions with answers. Will you check them?
*June 26, 2013*

**Government**

It's not a test...
*June 26, 2013*

**Government**

1. States must honor each other's laws and court decisions according to... A) 1st Amendment B) Privileges and Immunities Clause C) Full Faith and Credit Clause D) Revenue Sharing 2. The National Government can enter a State to restore order in cases of domestic unrest. A) ...
*June 26, 2013*

**Math**

If the manufacturer from the question above charges a 4½% late fee, how much would City Cellular owe if it did not pay the balance by the net date?
*May 21, 2013*

**Math**

City Cellular purchased $28,900 in cell phones on April 25. The terms of sale were 4/20, 3/30, n/60. Freight terms were F.O.B. destination. Returned goods amounted to $650. What is the net amount due if City Cellular sends the manufacturer a partial payment of $5,000 on May 20?
*May 21, 2013*

**Math**

Using your answer to the question above, what is the net dollar amount of that rose order?
*May 21, 2013*

**Math**

Fantasia Florist Shop purchases an order of imported roses with a list price of $2,375 less trade discounts of 15/20/20. What is the dollar amount of the trade discount?
*May 21, 2013*

**physics **

A block with mass m=6.00kg slides down a surface inclined at 37° to the horizontal. The coefficient of kinetic friction is 0.20. A string attached to the block is wrapped around a flywheel on a fixed axis as seen in the figure. The flywheel has mass 25.0 kg and moment of ...
*May 1, 2013*

**Math**

Find the radius of a right circular cone if its volume is 1.5 times its lateral area and its radius is half its slant height.
*April 30, 2013*

**Calculus**

Find the dimension of a rectangle with perimeter 295 whose area is as large as possible
*April 30, 2013*

**Biology**

The term "worm" is a description of a body shape. A worm had a long, thin body. Aew all worms in the same phylum? How do you know?
*April 26, 2013*

**Math**

Find the area of the rectangular yard. A = length times width Then, divide the area by 600.
*April 17, 2013*

**7th grade math**

Three times larger assuming the cube is as tall as the pyramid.
*April 17, 2013*

**Math**

The other two angles would be acute angles.
*April 17, 2013*

**Math**

480 feet?
*April 17, 2013*

**science**

light trsavels at 3*10 m/s. an astrounaut shines a flash light in space. 4 hours later a martian sees a light from the astrounaut. how far away is mars from the astrounaut?
*April 17, 2013*

**Math**

Do you know how to remove parentheses?
*April 16, 2013*

**Math help Geometery**

I think rbowh left 360 degrees off the end of the sentence in the last comment.
*April 16, 2013*

**Chemistry**

What is the theoretical mass of the products in the double displacement reaction: CaCl2 (aq) + Na2CO3 (aq) → 2NaCl (aq) +CaCO3 (aq)
*April 5, 2013*

**math**

A building lot in a city is shaped as a 30° -60° -90° triangle. The side opposite the 30° angle measures 41 feet. a. Find the length of the side of the lot opposite the 60° angle. b.Find the length of the hypotenuse of the triangular lot. c. Find the sine, ...
*March 8, 2013*

**Chemistry Help!**

If 100 grams of KClO3 are heated to form KCl and O2 according to the equation KClO3 ¨ KCl + O2 (Hint: You need to balance the equation) a. How many moles of KClO3 reacted? b. How many moles of KCl are formed? c. How many grams of KCl are formed? d. how many moles of ...
*February 12, 2013*

**Physics**

What is the magnitude of the force a +29 charge exerts on a +3.3 charge 48 away?
*January 26, 2013*

**Statistics **

The amount of soda a dispensing machine pours into a 12 ounce can of soda follows a normal distribution with a standard deviation of 0.12 ounces. Every can that has more than 12.30 ounces of soda poured into it causes a spill and the can needs to go through a special cleaning ...
*December 7, 2012*

**Math**

5/6 is the greatest i helped you please help me
*November 26, 2012*

**math**

If franco is ordering lunch with a drink,sandwich,and a salad.He has the choice of 3 drinks,2 sandwichs,4 salads how many possible lunches are there? Tamara has 4 times as many pages to read for her book report as maria.Tamara has 20 pages left to read.How many pages does ...
*November 26, 2012*

**math 3rd grade**

Well see 4x7 doubled is well 28+28=56 so 4x7 doubled is equal to 8x7 hope this helps
*November 26, 2012*

**Math**

Well the florida one is b
*November 26, 2012*

**ENGLISH **

Identify the regular or irregular verb:John has become or has became a rather good actor. I choose ( has become)
*November 17, 2012*

**Math**

Sandy works at a clothing store. She makes $9 per hour plus earns 10% commission on her sales. She worked 78 hours over the last two weeks and had a total of $2,340 in sales before taxes. Which of the following is closest to how much she will earn in hourly wages and ...
*November 15, 2012*

**Physical Science**

Compute the wavelength in air of ultrasound with a frequency of 50 kHz if the speed of sound is 344 m/s.
*November 8, 2012*

**Calculus**

Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 3 ft by 4 ft. The resulting piece of cardboard is then folded into a box without a lid. Find the volume of the largest box that can be formed in this way.
*November 4, 2012*

**Physics**

A boy wishes to throw a rock into the river below the cliff where he is standing. The cliff is 50 M high and he can throw with a horizontal velocity of 30 m/s. how long does it take for the rock to reach the water? How far, in the horizontal direction, does the rock land?
*October 30, 2012*

**Trigonometry**

If the shadow of a building increases by 10 meters when the angle of elevation of the sun rays decreases from 70o to 60o, what is the height of the building?
*October 26, 2012*

**Trigonometry**

Karla is riding vertically in a hot air balloon, directly over a point P on the ground. Karla spots a parked car on the ground at an angle of depression of 30o. The balloon rises 50 meters. Now the angle of depression to the car is 35°. How far is the car from point P?
*October 26, 2012*

**Science**

According to what I know, m/s is the unit for linear speed or the velocity.
*October 25, 2012*

**calculus**

Two cars start from the same point at the same time. One travels north at 25 mph, and the other travels east at 60 mph. How fast is the distance between them increasing at the end of 1 hr? Find D after 1 Hr, solve D^2=25^2+ 60^2
*October 23, 2012*

**chemistry**

if 16.o ml HCL is needed to neutralize from a 2.25g sample of organic material, calculate the mass percentage of N in the sample
*October 13, 2012*

**science**

what is the control in the following experiment - which brand of popcorn has the least amount of un-popped kernels after 3 minutes?
*October 5, 2012*

**Math**

you take the principal multiplied by the rate by the time. That equals the interest and then you add it to the principal that is the future total
*October 5, 2012*

**math**

I agree and I only agree because all of you agree
*September 24, 2012*

**Math**

The perimeter of a rectangular deck is 175 feet. The length of the deck, L, is 6 feet longer than 2 times the width, W. Which system of equations can be solved to determine the length and width, in feet, of the deck? What is the correct formula and why? a) 2L+2W=175 L=2-6W b) ...
*September 20, 2012*

**6th grade science**

Thanks!
*September 16, 2012*

**6th grade science**

Is latitude the up and down lines on a map?Or the side to side lines? Thanks
*September 16, 2012*

**6th grade science**

thanks
*September 16, 2012*

**6th grade science**

What is porosity and permeability? Thanks
*September 16, 2012*

**6th grade science**

thanks
*September 16, 2012*

**6th grade science **

What is a A topographic map used for? thanks
*September 16, 2012*

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