Saturday

December 20, 2014

December 20, 2014

Total # Posts: 715

**science **

NaOH + HSO -+ Which of the following is the number of moles of NaOH required to neutralize 1 mole of H2SO4 in the equation above?
*December 18, 2014*

**Math**

Explain how you would find 2 x 2 1/3 using the distributive property.
*December 16, 2014*

**Math**

Why are the estimates of 6/10 x 18 shown below different? Is one estimate better than the other?
*December 15, 2014*

** Math**

Estimate each product of 4 5/8 x 1/3=
*December 15, 2014*

**math**

April is training for a marathon by running no less than 55 km per week. She runs at an average rate of 10 km per hour. What is the minimum number of hours, h, she should run? 10h ≥ 55; h ≥ 5.5; 5.5 hours 10h ≤ 55; h ≤ 5.5; 5.5 hours h over ten > 55...
*December 13, 2014*

**math**

The length of a piece of paper is 8.5 inches. Using scissors, you reduce the length of the paper to 4.25. What is the scale factor of the dilation? A- 1/4 B- 1/2 C- 2 D- 4 I think its A ?
*December 11, 2014*

**Algebra 2**

A simple random sample of 50 adults was surveyed, and it was found that the mean amount of time that they spend surfing the Internet per day is 54.2 minutes, with a standard deviation of 14.0 minutes. What is the 99% confidence interval for the number of minutes that an adult ...
*December 9, 2014*

**Algebra 2**

A textbook company states that the average time a student needs to take a quiz from its book is 30 minutes with a standard deviation of 3 minutes. A teacher using the book is not sure that this is correct for her classes and wants to check. She collects data on 10 random ...
*December 9, 2014*

**Algebra 2**

A simple random sample of 90 is drawn from a normally distributed population, and the mean is found to be 138, with a standard deviation of 34. What is the 90% confidence interval for the population mean? Use the table below to help you answer the question. Confidence Level 90...
*December 9, 2014*

**Algebra 2**

A study investigated the job satisfaction of teachers allowed to choose supplementary curriculum for their classes versus teachers who were assigned all curricular resources for use in their classes. On average, when surveyed regarding job satisfaction, teachers give a score ...
*December 9, 2014*

**Algebra 2**

A study investigated the job satisfaction of teachers allowed to choose supplementary curriculum for their classes versus teachers who were assigned all curricular resources for use in their classes. The authors of the study wanted to know if the two groups of teachers had ...
*December 9, 2014*

**Algebra 2**

A study investigated the job satisfaction of teachers allowed to choose supplementary curriculum for their classes versus teachers who were assigned all curricular resources for use in their classes. The authors of the study wanted to know if the two groups of teachers had ...
*December 9, 2014*

**Finance**

A manufacturing company is thinking of launching a new product. The company expects to sell $950,000 of the new product in the first year and $1,500,000 each year thereafter. Direct costs including labor and materials will be 45% of sales. Indirect incremental costs are ...
*December 3, 2014*

**Math**

In triangle ABC, the measure of C is twice the measure of A, and the measure of B is 6 times the measure of A. Find the measure of each angle
*November 27, 2014*

**English**

Yes I did the site was very helpful. We are going thru our print out now..thank You
*November 18, 2014*

**English**

Sorry Writeacher we are having a study group and we are all using same pc. I will tell all we can use same name...thank You
*November 18, 2014*

**English**

The physician discussed problems faced by everyone, and the response was positive. This is a compound sentence I would think no comma is necessary.
*November 18, 2014*

**math **

14. Simplify the expression. -5+i/2i
*November 18, 2014*

**math **

15. What is the solution of the linear-quadratic system of equations? y=x^2+5x-3 y-x=2
*November 18, 2014*

**history**

thx for the help...
*November 12, 2014*

**history**

1. Which group believed a strong national government was critical to the country? federalists anti-federalists
*November 12, 2014*

**English**

Think about all the selections you've read this far by European writers. Examine one element that the selections have in common, not including the fact that they are all European. Detail your findings.
*November 3, 2014*

**Principles of Accounting**

Santa Fe Company purchased merchandise for resale from Mesa Company with an invoice price of $24,000 and credit terms of 3/10, n/60. Prepare entries that the buyer should record for the purchase
*October 22, 2014*

**phi**

“If you are born in the U.S. then you are a U.S. citizen. You were not born in the U.S. so you are not a U.S. citizen.” (Points : 1) Slippery Slope Denying the antecedent Post Hoc False Dichotomy No Fallacy
*October 20, 2014*

**english**

because keeshwas of 13 only bcz of he has seen 13 suns before his fathers death
*October 11, 2014*

**Physics**

A swordfish swims at 2.46km/h.How far has the fish traveled after 2050s?
*October 8, 2014*

**math**

mrs.mcdermott is giving 6 students 3 piecies of candy.how many piecies did she give to all students?
*October 6, 2014*

**Philosphy**

DuBois claims that this occurs when the stronger members in society do not protect the weaker members:
*September 30, 2014*

**algebra**

can you help me with the Lesson 9: Operations and Applications of Scientific Notation Connections Education 1205070 M/J PRE-ALG - T1 Unit 2: Rational Numbers test.What is the product of (5.1*10^3)*(3.2*10^3)? (please express your answer in scientific notation.)
*September 25, 2014*

**algebra**

graph shows the equation c = 10+ 3t, where c is the total cost of going to the carnival and t is the number of $3 tickets purchased?
*September 16, 2014*

**chem**

which nuclides would you expect to be stable? a) 48K b)79Br c)Argon-32
*September 15, 2014*

**physics**

A square conducting slab with 7 m sides carries a net charge of 89 mu or micro CC. what is the electric field?
*September 14, 2014*

**statistics**

Let E and F be two events for which the probability of atleast one of them occurs is 3/4. what is the probability that neither E nor F will occur.
*September 11, 2014*

**chem**

the volume of a certain bacterial cell is 1.39um^3. what is its volume in mm^3? what is the volume of exactly 1e4 cells in liters
*September 8, 2014*

**C programming**

I changed some things and now it is atleast coming out with a calculation but it is the wrong answer
*September 7, 2014*

**C programming**

#include <stdio.h> #include <math.h> int main (void) { //Local Declarations float angleX; // Angle inputed by the user float coshx; // hyperbolic cosine of angle x //Statements printf ("\nEnter angle in degrees:"); scanf ("%f", &angleX); //...
*September 7, 2014*

**C programming**

I am suppose to create a code that uses the pow function in math.h to calculate the hyperbolic cosine when the user inputs an angle x. the equation I have to use is cosh x= e^x + e^-x /2 can someone check my code. I am not sure what i am doing wrong. do I have to declare the ...
*September 7, 2014*

**Algebra**

thank you
*September 2, 2014*

**Algebra**

James has to buy juice for his class party. There are several brands of juice at the store, and each container is a different size and price. Write a formula that will help James find the price per milliliter for each brand. Let x= price of juice, y= number of milliliters in ...
*September 2, 2014*

**Algebra 1**

Victor needs to calculate the number of miles per gallon his car averages. His car's gas tanks holds 15 gallons of gas. Write an equation that will help him determine the average number of miles per gallon. Let's let x= number of miles traveled, and y= average miles ...
*September 2, 2014*

**physics**

(a) Find the charge on each sphere.
*September 1, 2014*

**physics**

Two identical small spherical conductors (point charges), separated by 0.6 m, carry a total charge of 200 mu or micro CC. They repel one another with a force of 120 N. (For the universal constant k use the value 8.99 times 109 N m2/C2.) I think i am suppose to use E=kQ/r^2 . ...
*September 1, 2014*

**science**

what does the T stand for?
*August 31, 2014*

**science**

A particle leaves the origin with a speed of 2.4 times 106 m/s at 38 degrees to the positive x axis. It moves in a uniform electric field directed along positive y axis. Find Ey such that the particle will cross the x axis at x = 1.5 cm if the particle is an electron.
*August 31, 2014*

**math**

the integral from -2 to 1 of 1/(x^2 +4x+13)
*August 23, 2014*

**calc**

d/dx of taninverse e^3x i know tan inverse is 1/1+x^2 but im not sure what to do with e^3x?
*August 22, 2014*

**Philosphy**

According to Cady Stanton, the least bad form of subjection of women is based in this
*July 28, 2014*

**Philosphy**

Hill claims that a fruitful way to think about the badness of destroying the environment is: To think about what kind of human would choose to destroy the earth. To appeal to theories about God and care for the earth. To examine people’s intuitions about whether it is ...
*July 21, 2014*

**philosophy**

What is not an example of a practice, according to MacIntyre’s account the military. Farming. Throwing a football. Education.
*July 21, 2014*

**Philosphy**

Which of the following does Peter Singer assert about the principle of equality
*July 7, 2014*

**Math**

There are 52 coins that consists of pennies, dimes, and quarters. Two stacks have the same number of coins and the third stack has twice as much. The coins equal to $5.98. How many pennies, dimes, and quarters are there? I already found out that two stacks have 13 coins and ...
*June 1, 2014*

**math**

What number can be removed from the following list of data so that the median will remain the same? 40, 28, 29, 32, 16, 40, 35 A. 28 B. 32 C. 35 D. 40
*May 19, 2014*

**Help me trig.**

solve the equation in the interval [0,2pi) tan (t/2)-sint=0
*May 14, 2014*

**Trig**

Find a parametric equation for the ellipse. Make sure that the graph of your parametric equation is a complete ellipse. 3x^2+4y^2=12
*May 14, 2014*

**History -- PLEASE CHECK!**

Ok, thank you.
*May 13, 2014*

**History -- PLEASE CHECK!**

I did read the article... Is it C then?
*May 13, 2014*

**History -- PLEASE CHECK!**

Is it D?
*May 13, 2014*

**History -- PLEASE CHECK!**

In the 1980s an alterative music form began developing in Washington State. This music, called grunge, combined elements of punk and heavy metal. Like most new bands, grunge bands started playing in small crowds and slowly became popular. Which of the following correctly ...
*May 13, 2014*

**geomerty**

jasmine
*May 12, 2014*

**geomerty**

Let A be between B and C. Use the segment addition postulate to solve for w. BA = 7w − 12 AC = 6w − 14
*May 12, 2014*

**Science**

Which of the following occurs during artificial selection, but not during natural selection? A. Selection pressures result in only certain traits from a population being passed on to offspring. B. Traits are passed to offspring through genes. C. Males and females mate and ...
*May 7, 2014*

**Science--PLEASE CHECK!**

Haha, thanks:D
*May 7, 2014*

**Science--PLEASE CHECK!**

Which of the following explains how natural selection leads to evolution? A. Conditions in the environment reduce competition for resources within a species. B. Helpful variations accumulate among surviving members of the species. C. Overproduction provides food for stronger ...
*May 7, 2014*

**math help!!!**

A linear function is a fun with points that lie on a line. You can write a linear function in the form f(x) = mx + b, or y = mx + b. Hope that helps! :D
*May 7, 2014*

**math help!!!**

Wait, do you still need help, or no?
*May 7, 2014*

**math help!!!**

Oh! I love these type of problems! Let me solve and try and help you understand. :-)
*May 7, 2014*

**Science**

Ms. Sue, are you able to help me?
*May 5, 2014*

**Science**

Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms? A. sequence the same gene in both species to compare their similarity. B. dissect specimens of both species to look for homologous ...
*May 5, 2014*

**Math**

Hi Reiny, Thank you for taking the time out of your day to help me! To answer your question, not sure. I just wrote out the question that was given to me with the answers I was considering.
*April 23, 2014*

**Math**

You draw five cards from a standard deck of 52 cards. P(heart) = 4/5 (fraction). What type of probability is illustrated and why? Theoretical; the result is based on the number of possible outcomes** Theoretical; the result is found by repeating an experiment Experimental; the...
*April 23, 2014*

**Language Arts**

Thank you! :D
*April 16, 2014*

**Language Arts**

I checked out the site! From what I'm understanding, I believe the answer is A. Is that correct?
*April 16, 2014*

**Language Arts**

Identify the correct statement. A) When a complex sentence begins with a dependent clause, put a comma after the clause. B) When a complex sentence begins with an independent clause, put a comma after the clause. C) In a compound sentence, put a comma after the coordinating ...
*April 16, 2014*

**Maths please someone help me out!!!**

3. The efficiency of an industrial pump decreases by a fixed percentage each year. The percentage decrease each year is with respect to the efficiency of the pump at the start of each year. Over each four year period, the efficiency decreases by 80%. Let us write e = f(t) so ...
*April 3, 2014*

**Maths**

Never mind I have solved the question
*April 3, 2014*

**Maths**

4. Calculate average speed of particle which position at time t is given by the function g(t) = t3, on the intervals (a) [2,3]; (b) [2,2.1]; (c) [2,2.0001]; (d) [2, 2 + h] , where h > 0 is arbitrary positive number. Find g′(2).
*April 3, 2014*

**Maths**

4. Calculate average speed of particle which position at time t is given by the function g(t) = t3, on the intervals (a) [2,3]; (b) [2,2.1]; (c) [2,2.0001]; (d) [2, 2 + h] , where h > 0 is arbitrary positive number. Find g′(2).
*April 3, 2014*

**Algebra**

Thank you very much Steve..
*April 2, 2014*

**Algebra**

Consider the function :[1,∞)→Rgivenbytheformulay=x3+2. (a) Show that though the function is increasing at an increasing rate, the change in x required to double the value of the function is not constant. (b) Make a table of values for constant changes in x, and ...
*April 2, 2014*

**Maths algebra **

The efficiency of an industrial pump decreases by a fixed percentage each year. The percentage decrease each year is with respect to the efficiency of the pump at the start of each year. Over each four year period, the efficiency decreases by 80%. Let us write e = f(t) so that...
*April 2, 2014*

**calcules**

A company wishes to run a utility cable from point A on the shore to an installation at point B on the island. The island is 6 miles from the shore. It please explain it for me step by step without link it to a similar question: costs $400 per mile to run the cable on land and...
*March 25, 2014*

**Trigonometry**

Find all solutions to the equation tan(theta)+sqrt3=0 Write your answer in terms of pi and us the or button as necessary.
*March 25, 2014*

**Business Calcules**

find a rectangular contains at least 231 cubic inches.the height of the box must be exactly 1/4th of the width of the box. the box is closed on all 6 sides. the surface area of the box minimized.?
*March 23, 2014*

**Science**

thx number 3. is c and all the others are right...
*March 22, 2014*

**Physical Science**

The entropy of an isolated system always do what when natural processes occur?
*March 17, 2014*

**Physical Science**

The second law of thermodynamics forbids a heat engine to have thermal efficiency of what?
*March 17, 2014*

**Physical Science**

A sample of gas has its number of molecules halved, its Kelvin temperature doubled, and its volume halved. What is the new pressure, relative to the original pressure?
*March 17, 2014*

**Physical Science**

On a winter day the temperature drops from –5°C to –15°C overnight. If a pan sitting outside contains 0.49 kg of ice, how much heat is removed from the ice for this temperature change?
*March 17, 2014*

**Physical Science**

An ice tray with 175 g of water at 30°C is placed in a freezer at –9°C. How much energy must be removed from the water to lower its temperature to the freezing point?
*March 17, 2014*

**Physical Science**

If the volume and the number of molecules remain constant for a gas, a temperature increase causes the pressure to do what?
*March 17, 2014*

**Physical Science**

When 8 kcal of heat is added to 2.4 kg of a substance, its temperature increases 23 C°. What is the specific heat of the substance?
*March 17, 2014*

**Science 6th grade Earth's day and night ANSWERS**

i got a 100 thx...
*March 12, 2014*

**Molecular Bio**

1 ml 10 ml 5 ml
*February 13, 2014*

**PE -- Connexus**

Ms. Sue, please help! :(
*February 7, 2014*

**PE -- Connexus**

Wanda is playing center for her floor hockey team and sees that her right wing teammate has control of the ball. In oder to best have her body position to score from a pass sent by her right win, Wanda should position her body a. Between the other team's goalie and their ...
*February 7, 2014*

**geometry**

An advertising blimps hovers over stadium at the altitude of 152 m.the pilot sites a tennis court at in 80 degree angle of depression. Find the ground distance in the straight line between the stadium and the tennis court. (note: in an exercise like this one, and answers ...
*February 6, 2014*

**trig**

An advertising blimps hovers over stadium at the altitude of 152 m.the pilot sites a tennis court at in 80 degree angle of depression. Find the ground distance in the straight line between the stadium and the tennis court. (note: in an exercise like this one, and answers ...
*February 6, 2014*

**trig**

An advertising blimps hovers over stadium at the altitude of 152 m.the pilot sites a tennis court at in 80 degree angle of depression. Find the ground distance in the straight line between the stadium and the tennis court. (note: in an exercise like this one, and answers ...
*February 6, 2014*

**trig**

A kite is flying at an angle of elevation of about 40 degrees. All 80 meters of string have been let out. Ignoring the sag in the string, find the height of the kite nearest ten meters.
*February 5, 2014*

**trig**

A kite is flying at an angle of elevation of about 40 degrees. All 80 meters of string have been let out. Ignoring the sag in the string, find the height of the kite nearest ten meters.
*February 5, 2014*

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