# Posts by reba

Total # Posts: 21

**Statistics**

"John"'s answer is incomplete. The real solution is: W_female: (235.1 - 197.2)/2 = 18.45 t-value for females: 2.048 SD_female: (W*sqrt(n))/t = (18.45*sqrt(29))/2.048 = 48.5 As stated, the margin of error for males is 10. We assume the t-value for males is 2 based...

**Biology**

Did anyone answer this?

**Social Studies**

anadian was once part of British and French. The people in Quebec are most likely French or have a French ancestry. They speak French their and counts it as a main language. I think Quebec want to break away because of its French history or canadian's involvement with ...

**math**

the perimeter of a dog park is 156 ft. If the length of the park is 2 ft. less than 3 times the width, what are the dimensions of the dog park?

**1st Grade Math Fair Idea**

Any ideas for math fair for my first grader using patterns?

**arithmetic**

whats the first term if the third term is 21 and the eighth term is 56?

**math**

write down four odd digits that summ up to 19.

**biology**

why does it make a difference if you measure metabolic rate in terms of o2/animal or o2/g

**statistics**

For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size 3.

**physical science**

a force used to lift a 12-kilogram mass to a height fo 8 meters in 2 seconds does 1040 joules of work. how much force is used.

**Biochemistry**

A protein molecule in its folded native state has one favored conformation, but when it is denatured it becomes a random coil, with very many possible conformations. What must be the sign of the change in entropy (S) for the change native---> denatured Would this be ...

**algebra**

forget k x/100 _______ (6-x)/100 solve for x

**algebra**

k= x/100 _______ (6-x)/100 how to work? what to do next??

**o-chem**

30g malononitril in 300ml water, soluabiltity 20g/100ml in ether...13.3g/100ml water. what weight recovered by 3 100ml extractions using ether..i need help..how to work??

**o-chem**

what volume? sorry out of school for 30yrs! also 2nd part give soluability of 20/100ml in ether & 13.3g/100ml in water and the experiment is being done with 30g (mw 188.61) in 300ml of water to be extracted wih ether. I don't knwo how to proceed

**o-chem**

300ml aq solution of 30g malononitrile extracted w/ether If K = 1.5 what results would be acheived from 3 100ml portions of ether...MORE importantly how do you work the problem..thanks

**Math**

In a survey of 50 students, 23 owned cellular phones, 18 ownded digital cameras, X owned cellular phones and digital camera, 2X owned neither. a) How do i write an expression in X for the Total number of students in the survey and how do i find for X????

**history**

on the impeachment of the chief justice of the supreme court who tries the case

**Finance**

i Craig: I am already having trouble understanding Chapter 6, problem 2 on page 207 of textbook. I am currently on week 3 of the FIN 200 class. The problem reads as follows: If you require a 9 percent return on your investments, which would you prefer? a. $5,000 today b. $15,...

**business**

What are the procedures for easement in civil court

**english**

can you give me a list of topics I can write a speech on? For example: If I wanted to write to the MTA about getting the trains to be on time or more available trains to come more often. I need to persuade an audience to better something.

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