Sunday

August 2, 2015

August 2, 2015

Total # Posts: 962

**Chemistry**

The formula for magnesium carbonate is MgCO3. What is the charge of the cation in Ag2CO3? Would it be +1 or +2 because there are two of Ag?
*July 29, 2015*

**Living Waters private school**

Can I choose Human resource or safety officer when am doing maths literacy, economic,business and tourism
*July 29, 2015*

**Life orientation**

The media do not tell us what to think.they tell us what to think about.how is this so.by using three forms of media
*July 21, 2015*

**Algebra**

I seriously need help on this math problem. I have tried to work it out myself but the answer is not coming out right. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 3x + 7.
*July 8, 2015*

**MATH**

if alpha and beta are zeroes of the polynomial x2-5x+6,then find the polynomial whose zeroes are root 3 and -root 3
*July 4, 2015*

**alegbra**

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 7x + 6.
*June 27, 2015*

**statics**

Walleye is a common game fish. Adult walleye have a length with a mean of 44 cm and a standard deviation of 4 cm and the distribution of lengths is approximately Normal. What fraction of walleye are longer than 52 cm in length?
*June 22, 2015*

**math**

I am five digit number greater than 40,000 but less than 70,000.My ones digit is more than my ten thousands digit.All my other digit are the same.The sum of my gigit is 19.What number am i?
*June 22, 2015*

**Mathematics**

what are the 3 geometric means between 4 and 1/4?
*June 17, 2015*

**Math **

Anna is making a 20-metre long strips of $50 notes. Estimate the total value of the $50 notes Anna will use.
*June 14, 2015*

**Math **

How many people can fit in a 1.5 tonne elevator? Please show working out.
*June 14, 2015*

**electronic**

find the intrinsic concentration, ni for silicon at 300k.given that Eg =1.12V Ao=5.85×10^5 q=1.6×10^-19C K=1.38×10^23J/K. using ni= Ao T^3/2 exp(-q/KT . Eg/2).
*June 14, 2015*

**Math**

She has 2 7/8 cups of flour, she will put 3/4 cup of flour in each cake
*April 29, 2015*

**algebra need help**

The highest temperature ever recorded in a certain town was 88 Fahrenheit . the lowest temperature ever recorded there was -24 Fahrenheit what is the difference between the two temperatures.
*April 29, 2015*

**science**

Jenny is doing an experiment to see if students in her class like apples or oranges best. She will offer each student an apple or an orange. Then she will record how many students took each kind of fruit.What is a valid prediction Jenny could make about the results of her ...
*April 28, 2015*

**Algebra**

Perform the indicated operation and if possible simplify x/5 * y/z
*April 23, 2015*

**World view**

Is it possible to reconcile the popular beliefs listed with the claims Jesus made? Why or why not?
*April 15, 2015*

**World view**

What is the prophecy in Genesis 3:15 known as and what does it mean?
*March 30, 2015*

**Math**

Phil bought a block of cheese in the shape of a rectangular prism measuring 8 inches by 4 inches by 2 inches. He cut four pieces of cheese off the block each measuring 2 inches by 3 inches by inch . how much of the block of cheese is left . IS the answer 40in3
*March 25, 2015*

**Math**

Ok me saying "No idea" is just a metaphor for me saying "I do know, its just that I need a little more help understanding". I am smart its just that this unit is hard and no matter how much I study, I doesn't help. I get that it's annoying but ...
*March 24, 2015*

**Math**

Which explains why the sequence 64, 4, 1/4,... is arithmetic or geometric? A. The sequence is geometric because it decreases by a factor of 1/16. B. The sequence is arithmetic because it decreases by a factor of 1/16. C. The sequence is geometric because it decreases by a ...
*March 24, 2015*

**Math**

Thank you Ms. Sue 16.5
*March 22, 2015*

**Math**

Is this correct- 5 squared + 8 divided by 2 = 29
*March 22, 2015*

**math**

sorry i clicked on the wrong name
*March 17, 2015*

**math**

thank you Ms Sue I need to know if I did this correctly: (-2) + (10+2) Is the answer 14
*March 17, 2015*

**math**

The low temperature in one city was -4 degrees F. The low temperature in another city was 8 degrees F. Write an inequality to compare the temperature. HELP!
*March 17, 2015*

**Social Studies**

Never mind, The answer is B. Europe
*March 13, 2015*

**Social Studies**

My answer: D
*March 13, 2015*

**Social Studies**

Until the 1700s, the mayan calendar was much more accurate than any calendar used in... A. the United States B. Europe C. China D. the Middle East
*March 13, 2015*

**math**

The Answer Is false ^.^
*March 9, 2015*

**Math**

is this statement always, sometimes, or never true: the absolute value of a positive integer is a negative integer. i think never am i correct
*March 5, 2015*

**math**

Steve, in (a)the (y) is a misprint and (x)= -2 Thank you for the help
*March 5, 2015*

**math**

if x=-2 and y=2, which of the following is false: (a) (x) is greater than 1 (y) (b) (x) = (y) (c) (y) is less than 1 (d) (x) = y
*March 5, 2015*

**Math**

evaluate this expression: (31) - (-1)=
*March 5, 2015*

**Math**

If neon has a melting point of -248 and hydrogen a melting point of -259. Is the melting point of neon greater or less than hydrogen's. I think greater than. Am I correct?
*March 5, 2015*

**Math, geometry**

It is 19.2325
*March 5, 2015*

**bautista creek**

John has 4 cups filled with fruit juice.he said that he has a gallon of fruit juice.Is his statement reasonable? explain why or why not.
*March 4, 2015*

**Math**

I did not have to copy the problem. This is the way it is written in my math text/workbook.
*February 28, 2015*

**Math**

To make 4 1/2 gallons of ice cream, it takes 6 3/10 gallons of milk. How many gallons of milk does it take to make one gallon of ice cream?
*February 28, 2015*

**math**

Ms. Sue, this is the way the problem is in my math book.
*February 27, 2015*

**math**

I don' know Ms. Sue. Can you help me , please!
*February 27, 2015*

**math**

To make 4 1/2 gallons of ice cream, it takes 6 3/10 gallons of milk. How many gallons of milk does it take to make one gallon of ice cream? Do I divide 6 3/10 by 4 1/2
*February 27, 2015*

**math**

It is recommended that 3/5 of the calories a person consumes come from carbohydrates. If 1/12 of these calories should be from fiber, what fraction of the number of calories should come from fiber?
*February 27, 2015*

**math**

thank you steve
*February 27, 2015*

**math**

so sorry sometimes I use my middle name
*February 27, 2015*

**math**

can I get some help just want to know if I am doing okay
*February 27, 2015*

**science**

A mixture of sugar and water can be separated by ______________. Choose ALL that apply. (2 points) Box 1. using a magnet Box 2. boiling the mixture Box 3. evaporating the mixture Box 4. using a filter I picked "Box 2" and "Box 3"
*February 2, 2015*

**science**

Which of the following represents a heterogeneous mixture? A.saltwater B.air C.bleach and water D.chicken noodle soup I think the answer is D. Chicken noodle soup. I dont know exactly.
*February 2, 2015*

**math**

Homeroom 101 and Homeroom 102 share a hallway bulletin board. If Homeroom 101 uses 3/5 of their half to display artwork, what fraction of the board is used to display to display Homeroom 101's artwork? Which is correct-3/5 x 1/2 , 3/5 divided by 1/2. or 3/5 x 1/2?
*January 29, 2015*

**chemistry**

A man pushes on a trunk with a force of 250 newtons. The trunk does not move. How much positive work is done on the trunk?
*January 27, 2015*

**physicsss**

Thanks Damonnn:)
*January 15, 2015*

**physicsss- Can you check my answer steve?**

??
*January 15, 2015*

**physicsss**

A sled weighing 200.0 N is pulled along a horizontal surface with a horizontal force of 45 N. The coefficient of static friction is 0.65 and of kinetic friction is 0.40. What is the force of friction? So I got Ff=200*.4= 80N
*January 15, 2015*

**math**

lake superior has a maximum depth of 1.333 thousand feet. there are 5,280 feet in one mile. how deep is lake superior in miles? round to the nearest hundredth if necessary. explain the answer
*January 14, 2015*

**english**

The _______, accompanied by the media and several tabloid reporters, often visits the hospital to cheer up the wounded soldiers a. actors b. actress c. band members d. singer and his wife
*January 8, 2015*

**math lit, accounting, business studies, cat**

Cause I prefer to here other people`s responses,maybe could find out answers from people who were doing the same subjects as mine and ended up succeding in life and living their dreams.rather than being answered by someone who knows me an say more lies.
*January 2, 2015*

**Physics**

A baseball with mass of 0.145 kg is thrown straight down at the ground. At a particular speed, it has a drag force of 0.4 N acting on it. What is its acceleration at that time? -2.8m/s^2
*December 21, 2014*

**Organic Chemistry**

Label the following reaction components as weaker acid, conjugate base and the species that predominate at equilibrium (two may be present for this one) ethylamine + acetone (equilibrium arrows) ethylammonium + acetone enolate Please help!
*December 6, 2014*

**Help - involving economics**

Oh wow, I never even thought of that. Thanks! :)
*December 5, 2014*

**Help - involving economics **

So if the federal government decided to increase the minimum wage by $1/hr, what could be some economic affects of that? I already thought of the fact that people will get paid more, but I can't think of any more. Can you help?
*December 5, 2014*

**Statistics**

Assume that a procedure yields a binomial distribution with n=3 trials and a probability of success of p= 0.90. Use a binomial probability table to find the probability that the number of successes x is exactly 1.
*December 2, 2014*

**statistics**

The 95 percent confidence interval about a mean difference was -3.0 minutes to 6.5 minutes. The null hypothesis that the two population means are equal
*November 16, 2014*

**Derivative**

Okay, I will get to familiarizing myself with the derivative of the trig functionss. Thanks you so much, I really appreciate all the work and patience you tutors have :)
*November 16, 2014*

**Derivative **

Can you help me find the derivative of y= cos(x)/1+sin(x).. the / is a fraction bar. I have a hard time finding trig derivatives because I don't really know what the derivative of cos,sin ,or tan would be honestly.
*November 16, 2014*

**math**

Is this correct- 0.685 x 100 =68.5
*November 16, 2014*

**Math**

16 students do not prefer school uniform. 4 students prefer school uniform. What percent prefer uniforms and what percent do not. What is the relationship between these two percents?
*November 13, 2014*

**math**

thank you so much.
*November 13, 2014*

**math**

what percent would 8/45 be
*November 13, 2014*

**Math**

Marti works Monday through Saturday, so she has a day off once every 7 days. She needs to give her dog some medicine every 5 days. How often does she give her dog medicine on her day off?
*November 11, 2014*

**PHYSICS**

you could use thus formula: P=F/A
*November 10, 2014*

**English/grammar**

yeah. it's correct.
*November 10, 2014*

**physics**

Speed in air is 340m.s Siren of ambulance emits waves of frequency 980Hz A detector at the scene measures the frequency as 1050Hz h0w d0 I w0rk this 0ut 1050 = 340 / 340 - vs (980) 1050 = 1 - vs (980) 1050 = -vs (980) 1050 + vs = 980 1050/1050 + vs = 980 / 1050 vs = 980 / 1050...
*November 5, 2014*

**history**

Who was the titan of industry, or the so-called robber baron, most closely associatedwith the railroad industry.
*October 26, 2014*

**Reading/English**

Need help on identifying root word,suffix and prefix for control.
*October 23, 2014*

**math**

Selena and her friends went out to dinner. The bill came to $56.25. If the the tax rate is 7.5 percent and they left a 15 percent tip. How much money did they spend at the restaurant ?
*October 12, 2014*

**sci207**

Climate change studies suggest the worst impacts will be felt by the wealthiest people true false
*October 12, 2014*

**math**

I don't get it
*October 12, 2014*

**math**

You are right
*October 12, 2014*

**math**

Selena and her friends went out to dinner. The bill came to $56.25. If the the tax rate is 7.5 percent and they left a 15 percent tip. How much money did they spend at the restaurant ?
*October 12, 2014*

**Math**

Farmer Jane has only pigs and chickens on her farm. She can't remember how many of each she has but she does know she counted 110 legs and 35 heads. Assuming that each animal is normal, how may of each animal does she have?
*October 5, 2014*

**math**

Farmer john has hens, geese, ducks, and two goats the number of hens equals the number if geese and ducks combined . There are 5 fewer geese than ducks. If the total number of animals is 40 how many are ducks
*September 25, 2014*

**math**

how many ways can you choose two colors from green, orange, yellow, purple, blue, and silver?
*September 19, 2014*

**stats **

The following data represents Total Credit Hours from our class survey. 90 54 98 45 65 43 12 48 56 12 15 60 38 18 67 125 50 43 26 64 22 52 69 You may use your calculator to find the following statistics: Considering the Total Credit Hours data from our class survey: (A1) What ...
*September 18, 2014*

**math**

An automobile rental angency charges $170 for 5 days for a certain model car. What is the unit price in dollars per day? why is it 59/3gal
*September 17, 2014*

**Stats**

The following frequency table shows the Favorite Color data from our class survey. Color Frequency Black 2 Red 3 Blue 4 Green 6 Pink 3 Orange 2 Gray 1 Purple 1 White 2 Describe the variability for this data
*September 17, 2014*

**math**

amos has 12 action , 15 comedy,. and 9 drama dvds, find the ratio of action dvds to the total number of dvds.
*September 15, 2014*

**chemistry 1045L**

The volume of a sphere is given by V=(4)(3.14)(r^3)/3 where r is the radius of the sphere. what is the density in g/mL of a sphere which weighs 2.00lb and has a radius of 3.50 inches?
*September 15, 2014*

**math**

7x9=63
*September 10, 2014*

**chemistry**

the vapor pressure of pure water at 60 c is 157 mmHg. what is the vapor pressure of this solution at the same temperature, in mm Hg?
*August 25, 2014*

**chemistry**

Ions in aqueous solution that are surrounded by polar water molecules are said to be saturated. is it true or false?
*August 22, 2014*

**chemistry**

hydrogen gas has a Henry's law constant of 1.07e-6 M/mm Hg at 25 Celsius when dissolving in water. if the total pressure of gas (H2 gas plus water vapor) over water is 1.0atm, what is the concentration of H2 in the water in grams per milliliter?
*August 22, 2014*

**Math**

from a lockout tower 25 meters high, a man observes from a position 1.70 meters below the top of the tower that the angle of elevation of the top of a nearby building is 12 degrees 40 minutes and the angle of depression of its base is 70 degrees 20 minutes. If the base of the ...
*August 14, 2014*

**Trigonometry**

can u pls draw an illustration on the second problem? thanks!
*August 2, 2014*

**Math**

the formula for slope is rise over run. slope=rise/run. just substitute it to the given. where rise is x and run is y.
*July 28, 2014*

**Social study**

it is called multi purpose projects because it serves more than one purposes.
*July 28, 2014*

**Ultimate medical academy**

What are at 10 least factors which have influenced healthcare?
*July 12, 2014*

**Economics**

Are there any welfare or subsidy payments that should be reviewed or added?
*June 24, 2014*

**math**

what is the sum when 101111 is added to the 6digits number?
*June 12, 2014*

**english**

traditional african marriage is an advantage to men and women
*May 27, 2014*

**chemistry **

A sample of gas occupies 100ml at 27degree Celsius and 740mm pressure. The temperature the gas will have,when its volume is changed to 80ml at 740mm pressure is?
*May 19, 2014*