# 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!

biology
cdsmcv

Math
Eight more than a number divided by 5

math
3.2b-9<1.4+0.6b

math
1 - 5t/4 >_ 6

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?)

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 ...

writing
explain the purpose audience tune and content impact academic writing

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

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

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

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

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 ...

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 ...

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 ...

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.

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 ...

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+

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.

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

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?