Thursday
July 24, 2014

Posts by marsha


Total # Posts: 81

statistics
for a hypothesis comparing two population means, what is the critical value for a one-tailed hypothesis test, using a 5percent level of significance level, with both sample sizes equal to 13? the standard deviations for the samples are 5 and 7. assume the population standard d...

statistics
if we are testing for the difference between two populations, it is assumed that the two populations are approximately normal and have equal variances, true or false

Math
A company is planning to expand its business in a few years. New plant construction costs are estimated to be $4.75 per square foot. The company invests $850,000 today at 6% compounded quarterly. a. How many square feet could be built in 3 1/2 years? b. If the company waits fo...

math multiple choice
. A man pays 60 cents for every 200m3 of gas used, plus a fixed charge of $13.75.How much does he pay when he uses 55 000m3 gas?

5th grade math
Hannah and Francine have $120. Hannah and Peter have $230. Peter has 6 times as much money as Francine. How much money does Hannah have?

5th grade math
At a supermarket, pineapple juice sells at $1 per pint (16 ounces). Greg wants to buy eighteen 40-ounce cans of pineapple juice from the supermarket. How much dose he have to pay altogether?

Math
Which of these numbers are real numbers and are NOT integers? -6; 0; 12/49; 54.6 5,198

Math
Which of these numbers are real numbers and rational numbers: -2/3; 0.32; 27.38452...; 6.4; the square root of 15

Math
Which numbers are rational: 1/7; the square root of 13; 19.12; -15; The square root of 200; 8/15; 52.7246...

Math
Thanks

Math
I got 580,249 Is that right?

Math
It is a 6 dagit number. The least digit is in the thousands place. The greatest digit is in the ones place. The digit in the tens place is 5 less than the digit in the ones place. The digit in the hundred thousands place is greater than the digit in the tens place but is less ...

Math
It is a 7-digit number It has a digit 0. The greatest digit is in the hundred thousands place. The value of the digit 1 is 1,000,000. The digit 6 stands for 6,000. The value of the digit 5 is 5 ones. The digit 8 has a value greater than 700 but less than 1,000. The value of th...

Business Math
t=5

4 grade math
Carlos Molly and Simon had to share $100. Molly had 3 times as much money as Simon. Carlos had 2 times as much money as Molly. How much money did Carlos get? How much money did Simon get?

Math
1,700

Chemistry
A salt solution is evaporated to dryness. If 66.5 g of the solution leaves 1,492 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution?

Chemistry
Calculate the volume of 2.45 M NaI that would be needed to precipitate all of the Hg+2 ion from 185 mL of a 2.44 M Hg(NO3)2. AND Calculate the molarity of an acetic acid solution if 47.81 mL of the solution is needed to neutralize 147 mL of 1.32 M sodium hydroxide.

4th grade math
Thank you every much. Have a great night.

4th grade math
So far John has run 1/4 of the way to school and walked 3/8 of the way. what fraction of the distance to school does John have left.

4 grade math
gina ate 1/6 of an apple pie. Greg ate 1/2 of the same apple pie. how much of the apple pie was left

4 grade math
If ms smith class read for 450hrs this month. Ms Brown class read two-thirds the number of hrs read by ms smith class. Ms James class read twice the hrs read by ms brown class. There are 90 students in these 3 classrooms. What was the average number of hrs read by each student?

4th grade Math
What fraction could be used to express 2 parts that equal 15/17?

math
solve the problem the national debt is $$44,280,000,000 and the population is 4,920,000.what is the debt per person

Math 4th Grade
200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?

math 4th Grade
a dictionary and a calculator cost $80. If the calculator cost $20 more than the dictionary, find the cost of the dictionary.

Math
200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?

geography
Discuss the origin, diffusion, and impact on the cultural landscape for one of the following: A) folk housing styles in the United States. B) Buddhism in Asia. C) English in South Asia.

Physics
An arrow is shot at an angle 35◦ with the horizontal. It has a velocity of 47 m/s.The acceleration of gravity is 9.8 m/s^2.What horizontal distance will it travel? Answer in units of m

Physics
A truck travels up a hill with a 15◦incline.The truck has a constant speed of 26 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s What is the vertical component of the truck’s velocity? Answer in units of m/s

physics
An arrow is shot at an angle 35 ◦ with the horizontal. It has a velocity of 47 m/s. How high will the arrow go? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m

physics
A charge of +3c is located 50cm from a charge of -6c A what is the magnitude of the force exerted on each charge? B on a drwing indicate the directioon of the forces acting on each charge

Anthropology
One of the great differences between human cultural behavior and that of monkeys and apes is that: (Points : 1) a great deal of human culture is learned through language. humans learn their culture through mimicking their parents. humans do not have instinctual behavior. apes ...

Math
There are twice as many girls as boys in the 4th grade classes at Joe's school. There are a total of 81 4th graders. How many boys and girls are there in the 4th?

math
jackie is 8 years younger than her neighbor Paula. the sum of their ages is 30. how old are jackie and paula?

Calculus
after t months on the job a postal clerk cn sort Q(t)=700-400e^-0.5t letters per hour. Wht is the average rate at which the clerk sorts mail during the first 3 months on the job. What is the average rte t which the clerk sorts mail during the first 3 months on the job? What is...

vet asst.
which of the following is true of a smooth muscle? A. IT CAN'T MAINTAIN A STEADY STATE OF CONTRACTION B. SMOOTH MUSCLE CAN SOFTEN MORE RELATIVE TO ITS LENGTH COMPARED WITH STRIATED (SKELETAL) MUSCLE C. SMOOTH MUSCLE CAN'T MAINTAIN AN EVEN AMOUNT OF TENSION D. ITS UNDER...

statistics
Waste Today Services operates a garbage hauling company in a South Jersey city. Each year, the company must apply for a new contract with the city. The contract is in part based on the pounds of garbage hauled. Part of the analysis that goes into the contract development is an...

Algebra
An insurance office has 150 employees. If 135 of the employees have cell phones, what portion of the employees do not have cell phones.

general chemistry
have no idea

English
What do the abbreviations "S" "F" "SCS" "SCV" "CD" and "CX" stand for in Shurley English.

Science
I need help determining what the second phase of a Succession Diorama for a forest fire would contain.

math
Sylvia has a jewelry collection of bracelets, necklaces, and earrings. She has 16 bracelets. The number of earrings is 2 times the number of necklaces. She has 43 pieces of jewelry in all. How many of each piece of jewelry does she have?

6th grade science
What are Newton's three laws on motion in sixth grade lingo?

Bio
The pellicle is a stiff but elastic membrane that gives the paramecium its definite shape.

Shirley English
Is the word "during" a preposition in "Were the animals hiding during the storm yesterday."

Shurley Englich
Classify the word "Were" in "Were the frightened animals hiding during the storm yesterday?

business communication 1
crystal agreed to serve on a company's advisory board and now has to contact them to say she cannot attend a scheduled meeting where she was to be one of the several key speakers. what should she do? a. Let the company knows she cannot attend and that they will have to mak...

Chem
A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.0 atm? This is a new chapter were covering and i have no idea how to do this?

Chem
(1.31)V=(0.61)(464)?

business
does garmex offer early childhood courses

algebra
Solve each inequality. State the solution set using interval notation and graph the solution set. 1-x<6 or -5+x<1

algebra
Let f(x) =x^2 +2 and g(x)=2x + 1 Find and simplify each of the following bexpressions. a)...f(4) b)...g(a+2) c)...(fog)(2)

Algebra
Let f(x) =x^2 +2 and g(x)=2x + 1 Find and simplify each of the following bexpressions. a)...f(4) b)...g(a+2) c)...(fog)(2)

math
Curtis found a rule for a table. The rule he made is y=7x. What does the rule tell you about every y value?

math
At a laundromat there is 1 more dryer than there are washers. Write a rule to find the number of d dryers for every w washers.

math
$2.67

spanish
abrazame muy fuerte - hold me tightly embrace me tightly

Mat 115
1155 is what percent of 210?

Biology
I need help with DNA conversion. First of all, I needed to convert this DNA sequence into its RNA equivalent. 5'-TACTTCTTCAAGACT-3' After the conversion, I came up with this.. 3'-AUGAAGAAGUUCUGA-5'. Is this correct? Then I need to take the converted sequence, a...

English
You're right, it's biographical style..

English
I have to write a research paper on Maya Angelou. I can do it in autobiographical stlye. I have no idea of how to begin with this. I picked up 3 books of her works, but don't have a clue. Any help? I want to do it myself, but do it well.

Chemistry
THe pH at equivalence point is always 7

social studies
How can the country best prepare for the changing race and ethnicity of its current and future citizens?

english: essay
Could someone give feedback on my expository essay? The concerns is the thesis, intro, conclusion and citations of the paper. Systemic Lupus Erythematosus (Lupus) Many years ago, my mother was diagnosed with Systemic Lupus Erythematosus. Every day since the diagnose she try to...

science
That was what I was leaning toward, I just needed to see if someone else thought the same. Thanks

science
if you hold a thermometer in each hand, one farenheit and one celsius, and they read the same. What do they read?

Biology
ingestion

math
Draw a quadrangle that has 2 pairs of equal sides but is not a parallelogram and what is it called??

math
how do i simplify x^2*x^3/x^4

Chemistry.. help plz
I need help with a chemistry problem. Here it is A quantity of gas has a volume of 14L at STP. What is the volume (in L) at 9.7 atm and 94 C? Can you help me set up the equation?

maths (is this correct)
calculate the exact value of 4 1/5 - (1 1/9 * 3)is it=39/45

calc check
if you evaluate the integral of: t csc^2 t dt, is the answer -t cot t + ln|sint| + C Differentiate the answer to see if it is correct.

calc
also: integral of tan^(-1)y dy how is integration of parts used in that? You write: arctan(y)dy = d[y arctan(y)] - y d[arctan(y)] Here we again have used the product rule: d(fg) = f dg + g df You then use that: d[arctan(y)] = 1/(1+y^2) dy So, the integral becomes: y arctan(y) ...

calc
evaluate the integral: y lny dy i know it's integration by parts but i get confused once you have to do it the second time Leibnitz rule (a.k.a. product rule): d(fg) = f dg + g df y lny dy = d[y^2/2 ln(y)] - y/2 dy ----> Integral of y lny dy = y^2/2 ln(y) - y^2/4 + cons...

Science-Oceanography
Bioluminescence in the marine environment is: a. Widespread amonth both invertebreates and the fishes? b. limited to plankton and survace dwelling organisms? It is widespread. Scroll down to Organisms that bioluminesce here: http://en.wikipedia.org/wiki/Bioluminescence#Organis...

science -Oceanography
Behavior in fishes and other marine organisms, such as vertical migration, countershading, and breeding cycles are in responce to? Sunlight. choices of responses to: a. Penetration of light in the sea b. Temp changes with depth c. seasonal changes of salinity d. pressure incre...

Science - Oceanography
Primary food source for abyssal organisms? Phytodetritus? Just a guess.... :) Phytodetritus is the major food source for abyssal benthic communities. choice of dead whales and other larger orgainsms which fall to the bottome or the rain of detritus and nutrients from the upper...

Finance
Thr rate of return you would get if you bought a bond and held it to its maturity date is called the bond's yield to maturity. If interest rates in the economy rise after a bond has been issued, what will happen to the bond's price and to its YTM? Does the length of ti...

Finance
"The value of outstanding bonds change whenever the going rate of interest changes. In general, short-term interest rates are more volatile than long-term interest rates. Therefore, short-term bond prices are more sensitive to interest rate changes than are long-term bond...

Finance
If you buy a callable bond and interest rates decline, will the value of your bond rise by as much as it would have risen if the bond had not been callable?

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