# Posts by CS

Total # Posts: 21

**Algebra**

The Smith family made an $800 down payment and pays $75 a month for new furniture. At the same time the Cooper family made a $500 down payment and pays $95 a month for their new furniture. How many months until the amounts they have paid will be equal? Please help with answer!

*February 11, 2014*

**biology**

cdsmcv

*December 30, 2013*

**Math**

Eight more than a number divided by 5

*October 1, 2013*

**math**

3.2b-9<1.4+0.6b

*May 23, 2012*

**math**

1 - 5t/4 >_ 6

*May 23, 2012*

**math**

A rectangular lot is bordered on one side by a stream and on the other three sides by 360m of fencing. Find the dimensions of the lot in order to maximize area. (Also, does it make sense if the answer I got is 180m width, 90m length?)

*March 27, 2012*

**economics**

Before the merger, each of the separate newspapers was losing about 10 million per year. What forecast would you make for the merged firms profits? Explain. b. Before the merger, each newspaper cut advertising rates substantially. What explanation might there be for such a ...

*February 16, 2012*

**writing**

explain the purpose audience tune and content impact academic writing

*January 22, 2012*

**business statistics**

What is the p-value when we test H0 : µ = 10 versus Ha: µ < 10 and have a calculated test statistic Z = -2.41 (ó is known) .008 -.008 .016 .4920 -.4920

*July 12, 2011*

**business statistics**

A 82% confidence interval for a sampling distribution with a mean of 100, a sample standard deviation of 24 and a sample size of 36 will be based on a á= ______ and a corresponding Zá of ____ .18 and .47 .18 and .915. .09 and .23 .09 and 1.34

*July 11, 2011*

**business statistics**

The sampling distribution of x bar must be a normal distribution with a mean 0 and standard deviation 1. true or false

*July 11, 2011*

**Business Statistics**

The standard deviation of all possible sample proportions increases as the sample size increases - TRUE OR FALSE

*July 11, 2011*

**physiology**

Given a Helium-Neon laser-based fiber optic Doppler probe at an angle of 60¡C with a blood vessel that registers a frequency shift of 63KHz, what is the velocity of the blood? Is this a reasonable number from a physiologic point of view when compared to the average ...

*June 16, 2011*

**social studies**

For liver tissue irradiated by the pulsed Ho:YAG laser, determine the exposure duration which the equation for heat conduction may be ignored. Assume the absorption coefficient at the Ho:YAG laser wavelength is 30cm-1 and assume the thermal diffusivity of the tissue is the ...

*June 15, 2011*

**social studies**

Given a Helium-Neon laser-based fiber optic Doppler probe at an angle of 60¡C with a blood vessel that registers a frequency shift of 63KHz, what is the velocity of the blood? Is this a reasonable number from a physiologic point of view when compared to the average ...

*June 15, 2011*

**Statistics**

I know it's just a linear dimension, I'm just assuming it's my prof's mistake (as he squared the sd to get variance). I simply copied directly from the paper.

*February 12, 2011*

**Statistics**

Heights of males are norm. dist. w/ u=180cm and o^2=16cm^2 while female heights have u=170cm and o^2=25cm^2. a)random male and female selected. What is the probability that the male is >5 cm taller? What is the distribution avg of the 2 heights? b)what is the distribution ...

*February 12, 2011*

**chemistry**

Which of the following is a conjugate acid-base pair? A. H2SO4, H2SO3 B. NH3, NO2 C. CH3OH, CH3COOH D. HF, H2F E. NH3, NH4+

*November 28, 2010*

**chemistry**

Calculate the H+ concentration (M) of a 0.010 M solution of NH4Cl. Note that the Kb for NH3 is 1.8 e-5.

*November 28, 2010*

**chemistry**

For the weak acid HX, what is the pH of a 0.10 M solution if the acid is 4.0% ionized?

*November 28, 2010*

**chemistry**

What is the pH of a solution of vinegar, which is 5.00% (w/v) acetic acid (CH3COOH, Ka = 1.8 e-5).what is the % dissociation?

*November 28, 2010*

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