1. maths

there are 24 hours in a day and scientists tell us that we should sleep for 3/8 of the day.how much time should we spend sleeping?

2. math

a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

14. Statistics

A test for independence is applied to a contingency table with 3 rows and 5 columns for two nominal variables. The degrees of freedom for this test will be: A) 20 B) 12 C) 8 D) 15

15. algebra 1

Suppose y varies directly as x and that y = 21 when x = 3. Find the value of y when x = 5. Would I be wrong if I said y = 35? In using y = kx with the 21 and the 3 k = 7. So if y = 35 and x = 5 then k = 7. Am I correct or am I way off course?

16. math

There are three times as many robins as cardinals visited a bird feeder. If a total of 20 robins and cardinals visited the feeder, how many were robins? Must solve using a systems.

17. Algerbra

I need help solving the b portion of the equation. 15. Assume that a surveyor stands at the top of a mountain that is “h” feet tall. If the distance (in feet) that he can see is defined by d = 3200.2 SQRT(h), then answer the following. (a) How far can

18. chemistry lab repost

i need help locating a lab for regents chemistry. i have the data sheet but misplaced the rest of the lab. i know it's online somewhere, but i'm not sure which lab it is.. (what it is called). The data sheet has 3 charts on it, 1 titled 'solubility'. it

19. Plz -- Chem Help

Question.. Nicotinic acid (niacin) is a monoprotic acid with the formula HC6H4NO2. A solution that is 0.012M in the nicotinic acid has a pH of 3.39 at 25C. what is the acid-ionization constant, Ka and pKa for this acid at 25C? Attempt.. HC6H4NO2 C6H4NO2- +

20. chemistry

how many moles of hydroxide ions are there in 82.35 mL of a 2.164M Sr(OH)2 solution? i understand how to do the math for problems like these, but i don't know how to find the moles of just hydroxide ions.

21. Math

If there is a recursively defined sequence such that a1 = sqrt(2) an + 1 = sqrt(2 + an) Show that an < 2 for all n ≥ 1

22. medical

should corrections be date and time stamped and why?

23. British Literature

Songs related to beowulf? i have to do a project for school and we have to rewrite a scene in the movie Beowulf. I have to choose about 10 songs to put in it. My group is doing the scene where Beowulf kills the Dragon. I'm having the hardest time finding

A chi-square test for independence with 8 degrees of freedom results in a test statistic of 18.21. Using the chi-square table, the most accurate statement that can be made about the p-value for this test is that: A) p-value < 0.01 B) 0.025 > p-value > 0.01

25. crt

Fill in the blanks where called for, and answer true or false where appropriate. 1. Valid arguments are said to be strong or weak. 2. Valid arguments are always good arguments. 3. Sound arguments are ________ arguments whose premises are all ________. 4.

26. Pre Calc

solve and comparison: a)4x-9y+4 6x+15y=-13 im so lost!!!!!

64. physics

two point charges are 10.0 cm apart and have chargeso of 2.0 uC (micro)and -2 uC, respectively. What is the magnitude of the electric field at the midpoint between the two charges? i think the answr is zero.. but i don't understand how to get to it...can

91. english

need help with writing an expossitory essay on healthy eating

92. Social Studies: Roman Emperors

What is the life summary of the Roman emperor, Elagabalus ?

93. math

long question-sorry I'm a teacher with study hall 1st period & 3 games in my closet-polled the students to see who would play which game. (The problem on my paper gives names, but I'm just giving numbers.) 5 kids said they would play all 3 games. 5 others

94. math

If a+3b=5, the value of b is a 4.5 b 7 c 1 d 4 plz explain thanks!!!

95. spelling

can you help me unscramble these words have to be 3 or 4 words STERAE

If the total variation in y values is 200, and the variation explained by regression line is 180, then the coefficient of determination is equal to __________. A) 1.11 B) 0.90 C) 0.81 D) 1.21 I picked D 1.21

In a goodness-of-fit test, the null hypothesis states that the data came from a normally distributed population. The researcher estimated the population mean and population standard deviation from a sample of 500 observations. In addition, the researcher

98. come back bobpursley

i'm hoping you have my answer - i'm still working on it though

99. Math

Here's a couple examples from my homework. If someone could help me solve this by showing me step by step what to do, it would be so great. Also, any websites that would show me the steps too. Thanks so much. I have to get all my work done by tomorrow and

100. Healthcare

What is being done to implement the reform of socialization and care givers?

Mr. Jones’s projects include some of the largest residential subdivisions within the City. While Mr. Jones’ business was developing the infrastructure of its newest and largest subdivision, the City discovered an easement for a city utility line on the

102. algebra 1

A man walks at a pace of 3 miles per hour. After 2 hours he stops for a rest. Let t be time AFTER the rest when he continues on his walk. Let d be the TOTAL distance traveled since he started. Write an equation linking d and t. Would the equation look

a. Your team is working as a legal team in a mid-size law firm. Your supervisor, a partner in the firm, has been approached by Mr. Al Jones, a land developer and very important client, with the following legal situation: Mr. Jones’s projects include some

104. math

a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

105. Pysical

What can be one long term goal and one short term goal for physical workout?

106. physics

i keep trying to put this in my calculator but i keep getting the wrong answer...can someone please try it on their calculator and help me? thnks (a) Find the distance r to geosynchronous orbit. Apply Kepler's third law. T^2=((4pi^2)/(GM_E))r^3 Substitute

107. physics...

T^2=((4pi^2)/(GM_E))r^3 Substitute the period in seconds, T = 86,400 s, the gravity constant G = 6.67 multiplied by 10-11 kg-1 m3/s2, and the mass of the Earth, ME = 5.98 multiplied by 1024 kg. Solve for r.

108. Human Resources

How do regular consultations between managers and their subordinates impact productivity and job satisfaction.

109. Liberalism in the 19th Century

Why has liberalism been considered the "ideology of the bourgeoisie" or middle class? I am really struggling with this question... can you please help?

110. Chemistry (urgent!)

A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. Please show steps so that I may unders tand how solve this. Thank you

111. CHEMISTRY

Calculate the volume of 0.6M HNO3 necessary to neutralize 28.55 cm3 of 0.45M KOH. PLEASE SHOW ME STEPS SO THAT I CAN UNDERSTAND HOW TO SOLVE THIS PROBLEM. THANK YOU.

112. CHEMISTRY

A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. PLEASE SHOW ME HOW TO SOLVE THIS. Thank you very much!

113. English

I am looking for a movie with similar themes/philosophies to the book "Cat's Eye" by Margaret Atwood. Any Ideas? :)

144. English

Can harrowed mean worried? In the dictionary, I'm only finding that it has to do with farming, but in the context I see it in, it looks like it'd mean worried.

145. Algeerba need bob pursely please

as of 1154 when Henry II became England had all of the following regions except Noramndy, Burgundy, Brittany Scottland, Anjou I am not sure if the answer is Burgundy or Scottland - this is my study guide for quarter exam thanks