Friday

January 30, 2015

January 30, 2015

Total # Posts: 43

**Science**

What is the total mass when you pour 100 g of vinegar into a flask and add 10 g of baking soda in a flask. Also what is the chemical formula for this. how can we change the formula so the experiment will be accurate. Thanks
*December 3, 2014*

**Math**

An artist is designing the rectangular wire structure with four rectangles drawn inside. The artist has a 12 meter length of wire. If the entire area of the figure is to be maximized, what should be the length of X? I know the formula for area of a rectangle 2(x + y) but, the ...
*May 11, 2014*

**Math**

A spherical balloon with a surface area of 36pi square inches is inflated further until its diameter has increased by 50%. The surface area of the balloon is now? I know the formula for surface area is A=4pi*r squared. I don't understand how you can figure the problem ...
*May 11, 2014*

**Algebra 1**

Thank You
*November 9, 2013*

**Algebra 1**

D.Vertical stretch with reflection It was supposed to say this
*November 9, 2013*

**Algebra 1**

Describe the effect of the transformation. (x,y)--->(x,-7y) A. Vertical translation of -7 units. B. Vertical stretch without reflection C. Horizontal translation of -7 units D. Vertical stretch without reflection Is the answer A
*November 9, 2013*

**Math**

Thank You
*November 7, 2013*

**Math**

Evaluate the function when x= -3,0 and 2. f(x)=-x+4
*November 7, 2013*

**Algebra 1 HELP**

I got -5
*October 20, 2013*

**Algebra 1 HELP**

-5(1-5x)+5(-8x-2)=-4x-8x
*October 20, 2013*

**Algebra 1**

A scale model of the Golden Gate Bridge in San Francisco Bay has a main span that is 20 inches long. If the main span of the bridge is 4200 feet long, what is the scale of the model?
*October 15, 2013*

**Math**

10+7x=19-3y Solve for y
*October 9, 2013*

**American History **

The failures of the Articles of Confederation showed that A.) The new government had to be powerful. B.)State government had to be all-powerful. C.)The people should not grant powers to the government . D.)The government should not guarantee individual freedoms.
*September 30, 2013*

**Statistics**

Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are left-handed. (b) Compute the probability ...
*May 27, 2013*

**Statistics**

The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.37 0.09 0.05 0.14 0.35 (a) Find the mean of the number ...
*May 27, 2013*

**Statistics**

Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your answers as fractions.) Red...
*May 27, 2013*

**Statistics**

Consider the following. (a) What percentage of a normal distribution is greater than the mean? (Give your answer correct to the nearest percent.) Incorrect: Your answer is incorrect. . % (b) What percentage is within 1 standard deviation of the mean? (Give your answer correct ...
*May 27, 2013*

**statistics**

Consider the following. (a) What percentage of a normal distribution is greater than the mean? (Give your answer correct to the nearest percent.) Incorrect: Your answer is incorrect. . % (b) What percentage is within 1 standard deviation of the mean? (Give your answer correct ...
*May 26, 2013*

**Statistics**

Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your answers as fractions.) Red...
*May 26, 2013*

**Statistics**

197-(31)squared divided by 10 197-961 over 10 = 96.1 then 197-96.1=100.9
*May 26, 2013*

**math**

Thank you, I just did another one of these and missed it can you look at it and help me figure out what I did wrong? A study was conducted to investigate the relationship between the cost, y (in tens of thousands of dollars), per unit of equipment manufactured and the number ...
*May 26, 2013*

**math**

A study was conducted to investigate the relationship between the resale price, y (in hundreds of dollars), and the age, x (in years), of midsize luxury American automobiles. The equation of the line of best fit was determined below. yhat = 183.8 − 20.48x (a) Find the ...
*May 26, 2013*

**math**

you have helped me so much, one more problem. Consider the following questions. (a) Chebychev's theorem guarantees that what percentage of a distribution will be included between x − 2.3s and x + 2.3s. (Give your answer correct to one decimal place.) Incorrect: Your ...
*May 26, 2013*

**math**

A study was conducted to investigate the relationship between the resale price, y (in hundreds of dollars), and the age, x (in years), of midsize luxury American automobiles. The equation of the line of best fit was determined below. yhat = 183.8 − 20.48x (a) Find the ...
*May 26, 2013*

**Math 116**

five times a number decreased by twice the same number
*December 23, 2012*

**Math116**

Can someone help me with the answers for my final exam in Math 116?
*December 23, 2012*

**math**

A group of 12 students has average height of 58 inches. Another group of 6 students have an average of 52 inches. What is average height of 18 students combined.
*February 27, 2012*

**statistics**

Divide all your answers by 8 to get 83.750 ex. 770/8=96.25
*February 26, 2012*

**PHI/105**

In comparing the views of David Hume, Immanuel Kant, Georg Hegel, and Arthur Schopenhauer, which view of experience seems closest to how you view the world? Briefly explain this philosopher's view as it compares to your view.
*August 22, 2011*

**PSY 230**

Explain how having a negative self-schema affects one’s social interactions. How does social intelligence affect one’s responses in any given situation? How might a person’s self-guides affect his or her perspective of the world?
*July 12, 2011*

**PSY 230**

Describe how a person’s cognitive style influences learning style. How is personality influenced by inherent learning styles and learning environments?
*July 12, 2011*

**Math 117**

Find all numbers for which the rational expression is undefined.6/2v+9
*June 30, 2011*

**geometry**

In an isosceles trapezoid, the longest base is 11", a leg is 5", and the height is 4". Find the length of the shorter base of the trapezoid.
*November 29, 2010*

**Math**

Forest rangers use degree measure to identify directions and locate critical spots such as fires. A forest ranger at tower A observes smoke at a bearing of 149 degrees (clockwise from the north) while another forest ranger at tower B observes the same smoke at a bearing of 250...
*March 13, 2010*

**Algebra Help PLZ**

This is verbatum, and that is why I am having problems with it myself.
*September 15, 2008*

**Algebra Help PLZ**

I have tried this several different ways and I am just not satisfied with the answer I keep coming up with. Trains A and B are traveling at the same direction on parallel tracks. Train A is traveling at 100 mph and train B is traveling at 120 mph. Train A passes a station at 4...
*September 15, 2008*

**algebra**

If the slope of a line is zero, I am assuming x=-4 has a slope of zero, since it is a straight line, does that make it undefined?
*September 14, 2008*

**Algebra**

I need to make sure this is correct. 5/2x+1/4x=11/4+x 4(5/2x+1/4x=11/4+x) cancel, left with 10x+1x=11+x 11x=11+x 11x-x=11 10x=11 x=11/10
*September 14, 2008*

**Algebra**

Thank you, I finally got the answer I needed after playing around with the original figures before writing the actual equation. I got E(t)=.56t+62.3 for the equation and E(18)=.56(18)+62.3=72.38 or 72.4....sound about right?
*September 14, 2008*

**Algebra**

I'm a bit stuck trying to figure out what this problem wants, can anyone help? In 1991, the life expectancy of males in a certain country was 62.3 years. In 1996, it was 65.1 years. Let E represent the life expectancy in years and t represent the number of years since 1991...
*September 14, 2008*

**thankyou**

thankyou
*April 12, 2008*

**ALGEBRA**

Jennie and Bill have a combined age of 50. 16 years ago Jennie was twice as old as Bill. Jennie is x and Bill is y. i do not understand after this x + y = 50 (x - 16) = 2(y - 16) but i know the answer is x = 28 and y = 22 Please help
*April 12, 2008*

**Math**

Help please. Jennie and Bill have a combined age of 50. 16 years ago Jennie was twice as old as Bill. Please can you help with the workin out.
*April 12, 2008*

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